SMHF282R5S INTERPOINT | Alldatasheet

Document overview

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Technical content

Features

  • Fully qualified to Class H or K
  • -55°C to +125°C operation
  • 16 to 40 VDC input
  • Fully Isolated
  • Rad hard optocoupler feedback
  • Fixed frequency, 550 kHz typical
  • Topology – Single Ended Forward
  • Transient protection 50 V/120 ms
  • Inhibit function
  • Sync function
  • Indefinite short circuit protection
  • Undervoltage lockout
  • Up to 82% efficiency

description

The SMHF Series™ of 28 V DC/DC converters offers a wide input voltage range of 16 to 40 volts and up to 15 watts of output power. The units are capable of withstanding short term transients up to 50 volts. The package is a hermetically sealed, projection-welded metal case. Flanged and non-flanged models are available. Screening SMHF converters offer screening options to Space Prototype (O), Class H, or Class K. Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O) or “R”, per MIL-PRF-38534. Interpoint model numbers use an “O” in the RHA designator posi- tion to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. See “Class H and K, MIL-PRF-38534 Screening” tables for more information. converter DeSign The SMHF converters are switching regulators that use a quasi- square wave, single-ended forward converter design with a constant switching frequency of 550 kHz. Isolation between input and output circuits is provided with a transformer in the forward path and a temperature compensated opto-coupler in the feed- back control loop. The opto-coupler is radiation hardened and is especially selected for space applications. For the SMHF dual output models, cross regulation is maintained by tightly coupled output magnetics. Up to 70% of the total output power is available from either output, providing the opposite output is simultaneously carrying 30% of the total output power. Predictable current limit is accomplished by directly monitoring the output load current and providing a constant current output above the overload point. Hi gHe r Po w e r DenSity The SMHF Series offers a new standard of performance for small size and high power density. At just 0.33 inch high and a total footprint of 1.7 in2, this low profile package offers a total power density of up to 30 watts per cubic inch. Lo w no iSe, Hi gH AuDio rejection The SMHF converter’s feed-forward compensation system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. Typical output voltage response for a 50% to 100% step load transient is as low as 1.3% with a 150 µS recovery time. Input ripple current is typically 35 mA p-p with output ripple voltage typically 50 mV p-p . inHibit Function SMHF converters provide an inhibit terminal that can be used to disable internal switching, resulting in no output and very low quiescent input current. The converter is inhibited when a logic low (≤0.8 – output disabled) is applied to the inhibit pin. The unit is enabled when the pin, which is internally connected to a pull-up resistor, is left unconnected or is connected to an open- collector gate. The open circuit output voltage associated with the inhibit pin is 8.5 to 12 VDC. In the inhibit mode, a maximum of 4 mA must be sunk from the inhibit pin at 28 VDC input. models vDc SIngLE 2.5 3.3 DUAL ±12 ±15 Cleared by U.S. DoD OSR for Public Release OSR case number 09S-0995, dated March 13, 2009. Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Crane Aerospace & Electronics Electronics group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • electronics@craneae.com www.craneae.com Page 1 of 15 Rev D - 20070404

28 Volt input – 15 Watt

A synchronization feature is included with the SMHF Series that allows the user to match the switching frequency of the converter to the frequency of the system clock. This allows the user to adjust the nominally 550 kHz operating frequency to any frequency within the range of 500 kHz to 600 kHz. This is initiated by applying a compatible input of the desired frequency to pin 5. The initial transition on the sync pin should be a negative transi- tion (i.e. from high state to low state) SHort circuit Pr o t e c t i o n SMHF Series converters provide short circuit protection by restricting the output current to approximately 115% of the full load output current. The output current is sensed in the secondary stage to provide highly predictable and accurate current limiting, and to eliminate foldback characteristics. unDervoLtAge Lockout Undervoltage lockout prevents the units from operating below approximately 14 VDC input voltage to keep system current levels smooth, especially during initialization or re-start opera- tions. PWM Controller ID IC Limit Ref. Output Common Positive Output Positive Input Inhibit Input Common 5 µH 2 µF FET Driver Figure 1: SMHF Si n g l e Output - BlOc k DiagraM Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 2 of 15 Rev D - 20070404 www.craneae.com

Operating COnditiOns and CharaCteristiCs input Voltage range

  • 16 to 40 VDC continuous
  • 50 V for up to 50 msec transient power dissipation (pd)
  • 8 W output power
  • up to 15 watts depending on model lead soldering temperature (10 sec per lead)
  • 300°C storage temperature range (case)
  • -65°C to +150°C case operating temperature (tc)
  • -55°C to +125°C full power
  • -55°C to +135°C absolute derating output power/current (tc)
  • Linearly from 100% at 125°C to 0% at 135°C output Voltage temperature coefficient
  • 100 ppm /°C typical
  • 150 ppm/°C maximum input to output capacitance
  • 60 pF typical current limit
  • 115% of full load typical isolation
  • 100 megohm minimum at 500 VDC
  • Any pin to case, except case pin audio rejection
  • 50 dB typical conversion Frequency (º55°c to +125°c tc)
  • Free run 550 kHz typical 480 kHz min, 620 kHz max inhibit pin Voltage (unit enabled)
  • 8.5 to 12 V undervoltage lockout
  • 14 V input typical meChaniCal and envirOnmental size (maximum) non flanged Flanged Weight (maximum) 30 grams typical screening Space Prototype, Class H, or Class K Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O) or “R”, per MIL-STD-38534. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. See “Class H and K, MIL-PRF-38534 Screening” tables for more information. Available configurations: OO, HO, HR, KR synC and inhibit sync in (500 to 600 kHz)
  • Duty cycle 40% to 60%
  • Logic low 0.8 V max
  • Logic high 4.5 V min, 5 V max
  • Referenced to input common
  • If not used, connect to input common inhibit ttl open collector
  • Logic low (output disabled) Logic low voltage ≤0.8 V max Inhibit pin current 12 mA max
  • Referenced to input common
  • Logic high (output enabled) Open collector or unconnected Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 3 of 15 Rev D - 20070404

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Figure 2: pin Out BOTTOM VIEW SMHF SINGLE AND DUAL NON-FLANGED OR FLANGED Dot on top of cover indicates pin one. Dotted line outlines flanged package option. 1 2 3 4 5 8 7 6 See cases E1 and g1 for dimensions. 1. If Sync is not used, pin 5 should be connected directly to input common. pin single Output dual Output

1 Inhibit Inhibit

2 no connection Positive Output

3 Output Common Output Common

4 Positive Output negative Output

1 Sync Sync

6 Case ground Case ground

7 Input Common Input Common

8 Positive Input Positive Input

Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 4 of 15 Rev D - 20070404 www.craneae.com

(S = single, D = dual) Radiation Level Case Option (Non-flanged case has no designator in this position) smd nUmbers StanDarD MicrOcircuit Drawing (SMD) In PROCESS 5962-0251002HXC 5962-9213902HXC 5962-9166402HXC 5962-9160102HXC 5962-9555902HXC 5962-9214402HXC 5962-9161402HXC SMHF SiMilar part SMHF282R5S/HO SMHF283R3S/HO SMHF2805S/HO SMHF2812S/HO SMHF2815S/HO SMHF2805D/HO SMHF2812D/HO SMHF2815D/HO To indicate the flanged case option change the “X” to “Z” In the SMD number. The SMD number shown is for Class H screening, non-flanged, and no Radiation Hardness Assurance (RHA) level. See the SMD for the numbers for other screening and radiation levels. For exact specifications for an SMD product, refer to the SMD drawing. Call your Interpoint representative for status on the SMHF SMD releases which are “in process.” SMDs can be downloaded from: http://www.dscc.dla.mil/programs/smcr mOdel seleCtiOn SMHF28 / Base model Vout value number of outputs case option screening Choose one from each of the following rows Vout value for singles 2.5, 3.3, 5, 12, 15 for duals: 5, 12, 15 “R” = decimal point, 3R3 = 3.3VDC number of outputs S (single) or D (dual) Case option non-flanged, leave blank F - flanged Screening OO* - Space prototype, HO, HR, KR *Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA” Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 5 of 15 Rev D - 20070404 www.craneae.com

  1. Guaranteed by design, not tested. 2. Indefinite short circuit protection not guaranteed above 125°C (case) 3. Recovery time is measured from application of the transient to the point at which Vout is within regulation. 4. Step transition time >10µs. Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified. SIngLE OUTPUT MODELS SMHF282R5S SMHF283R3S SMHF2805S unitSparaMeter cOnDitiOnS MIn TYP MAX MIn TYP MAX MIn TYP MAX Output current Vin = 16 tO 40 VDc — — 2.4 — — 2.4 — — 2.4 a Output pOwer Vin = 16 tO 40 VDc 0 — 6 0 — 8 0 — 12 w Output ripple 10 kHz - 2 MHz — 15 50 — 25 50 — 60 160 — 80 240 — 30 80 — 150 240 mV p-p tc = -55°c tO +125°c line regulatiOn Vin = 16 tO 40 VDc — 5 50 — 5 100 — 5 100 mV lOaD regulatiOn nO lOaD tO Full — 28 50 — 20 50 — 20 50 mV input VOltage nO lOaD tO Full cOntinuOuS 16 28 40 0 — 50 16 28 40 0 — 50 16 28 40 0 — 50 VDc VTRAnSIEnT 120 ms1 input current nO lOaD — 20 40 — 6 12 — 25 65 — 5 12 — 25 40 — 5 12 mA inHiBiteD input ripple current 10 kHz - 10 MHz tc = -55°c tO +125°c — 30 50 — — 50 — 45 80 — — 120 — 35 80 — — 120 mA p-p eFFiciencY tc = 25°c 65 67 — 68 73 — 73 75 — % lOaD Fault2 SHOrt circuit pOwer DiSSipatiOn — 3 6 — 7.5 30 — 5 8 — 7.5 30 — 3.5 8 — 7.5 30 w msrecOVerY1, 3 Step lOaD reSpOnSe 50% - 100% - 50% tranSient4 -200 50 200 — 50 270 -400 150 400 — 150 300 -500 150 500 — 150 300 mV pk µsrecOVerY3 Step line reSpOnSe1 16 - 40 -16 VDc tranSient4 -800 550 800 — 0.8 1.2 -800 550 800 — 0.8 1.2 -800 550 800 — 0.8 1.2 mV pk msrecOVerY3 Start-up tO 28 VDc DelaY — 10 20 — — 250 — 10 25 — 200 300 — 10 25 — 100 600 ms mV pkOVerSHOOt1, 4 capacitiVe lOaD tc = 25°c — — — — — 300 — — 300 µF Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 6 of 15 Rev D - 20070404

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  1. Guaranteed by design, not tested. 2. Indefinite short circuit protection not guaranteed above 125°C (case) 3. Recovery time is measured from application of the transient to the point at which Vout is within regulation. 4. Step transition time >10µs. SIngLE OUTPUT MODELS SMHF2812S SMHF2815S unitSparaMeter cOnDitiOnS MIn TYP MAX MIn TYP MAX Output current Vin = 16 tO 40 VDc — — 1.25 — — 1.00 a Output pOwer Vin = 16 tO 40 VDc 0 — 15 0 — 15 w Output ripple 10 kHz - 2 MHz — 60 150 — 50 200 — 60 175 — 100 260 mV p-p tc = -55°c tO +125°c line regulatiOn Vin = 16 tO 40 VDc — 5 100 — 5 100 mV lOaD regulatiOn nO lOaD tO Full — 20 50 — 20 50 mV input VOltage nO lOaD tO Full cOntinuOuS 16 28 40 0 — 50 16 28 40 0 — 50 VDc VTRAnSIEnT 120 ms1 input current nO lOaD — 25 55 — 5 12 — 25 62 — 5 12 mA inHiBiteD input ripple current 10 kHz - 10 MHz tc = -55°c tO +125°c — 35 80 — — 120 — 35 80 — — 120 mA p-p eFFiciencY tc = 25°c 76 79 — 78 80 — % lOaD Fault2 SHOrt circuit pOwer DiSSipatiOn — 3.5 8 — 7.5 30 — 3.5 8 — 7.5 30 w msrecOVerY1, 3 Step lOaD reSpOnSe 50% - 100% - 50% tranSient4 -700 150 700 — 150 1000 -800 200 800 — 600 1200 mV pk µsrecOVerY3 Step line reSpOnSe1 16 - 40 -16 VDc tranSient4 -800 550 800 — 0.8 1.2 -800 550 800 — 0.8 1.2 mV pk msrecOVerY3 Start-up tO 28 VDc DelaY — 10 25 — 200 1200 — 10 25 — 200 1500 ms mV pkOVerSHOOt1, 4 capacitiVe lOaD tc = 25°c — — 100 — — 100 µF Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified. Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 7 of 15 Rev D - 20070404

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  1. Guaranteed by design, not tested. 2. Up to 70% of the total output power is available from either output providing the opposite output is simultaneously carrying 30% of the total output power. Each output must carry a minimum of 30% of the total output power in order to maintain regulation on the negative output. 3. Effect on –Vout for the following conditions, percentages are of total power: +Po = 50% to 10% and –Po = 50%, +Po = 50% and –Po = 50% to 10% and from +Po = 70%/–Po = 30% to +Po = 30%/–Po = 70% all conditions are referenced to the balanced loads condition: 50%/50% 4. Indefinite short circuit protection not guaranteed above 125°C (case) 5. Recovery time is measured from application of the transient to point at which Vout is within regulation. 6. Response of either output with the opposite output held at half of the total output power. 7. Step transition time >10µs. Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified. DUAL OUTPUT MODELS SMHF2805D SMHF2812D SMHF2815D unitS paraMeter cOnDitiOnS MIn TYP MAX MIn TYP MAX MIn TYP MAX Output VOltage + VOut 4.95 5.00 5.05 4.92 5.00 5.08 11.88 12.00 12.12 11.82 12.00 12.18 14.85 15.00 15.15 14.78 15.00 15.23 VDc - VOut Output pOwer2 Vin = 16 tO 40 VDc — — 12 — — 15 — — 15 w Output ripple ± VOut 10 kHz - 2 MHz — 60 160 — 100 240 — 70 175 — 100 275 — 70 175 — 100 275 mV p-p tc = -55°c tO +125°c line regulatiOn Vin = 16 tO 40 VDc BalanceD lOaD + VOut — 5 50 — — 100 — 5 50 — — 100 — 5 50 — — 100 mV - VOut lOaD regulatiOn nO LOAD TO FULL BalanceD lOaD + VOut — 20 50 — — 150 — 20 50 — — 150 — 20 50 — — 150 mV - VOut crOSS regulatiOn3 eFFect On - VOut — 6 7.5 — 3 6 — 3 6 % input VOltage nO lOaD tO Full cOntinuOuS 16 28 40 — — 50 16 28 40 — — 50 16 28 40 — — 50 VDc VTRAnSIEnT 50 ms1 input current nO lOaD — 20 50 — 6 12 — 25 50 — 5 12 — 25 50 — 5 12 mAinHiBiteD input ripple current 10 kHz - 10 MHz — 30 80 — 60 120 — 40 80 — 55 120 — 40 80 — 55 120 mA p-p tc = -55°c tO +125°c eFFiciencY 75 77 — 76 81 — 76 82 — % lOaD Fault4 SHOrt circuit pOwer DiSSipatiOn — 3 6 — 7.5 30 — 3 6 — 7.5 50 — 3 6 — 7.5 50 w msrecOVerY1, 5 Step lOaD reSpOnSe6 BalanceD lOaDS 50% - 100% - 50% tranSient7 + VOut -600 200 600 -600 150 600 — 150 500 -600 300 600 -600 100 600 — 200 500 -600 300 600 -600 100 600 — 200 600 mV pk mV pk µs - VOut recOVerY5 Step line reSpOnSe1 ± VOut 16 - 40 -16 VDc tranSient7 -800 600 800 — 0.8 1.2 -750 550 750 — 0.8 1.2 -750 550 750 — 0.8 1.2 mV pk msrecOVerY5 Start-up 0 tO 40 V DelaY — 12 30 0 100 500 — 12 25 0 200 500 — 12 25 0 200 500 ms mV pkOVerSHOOt1, 7 capacitiVe lOaD tc = 25°c — — 47 — — 10 — — 10 µF Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 8 of 15 Rev D - 20070404

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OUTPUT POWER (Watts) SMHF2805D EFFICIENCY EFFICIENCY (%) 2 4 6 8 1 0 1 2 40V 28V 16V OUTPUT POWER (Watts) SMHF2815D EFFICIENCY EFFICIENCY (%) 2 4 6 8 10 12 14 40V 28V 16V OUTPUT POWER (Watts) SMHF2812D EFFICIENCY EFFICIENCY (%) 2 4 6 8 1 0 1 2 1 4 40V 28V 16V Figure 6 Figure 8Figure 7 OUTPUT POWER (Watts) SMHF 2805S EFFICIENCY EFFICIENCY (%) 2 4 6 8 10 12 16V 28V 40V OUTPUT POWER (Watts) SMHF2812S EFFICIENCY EFFICIENCY (%) 4 6 8 1 0 1 2 14 16V 40V 28V Figure 3 Figure 4 Figure 5 OUTPUT POWER (Watts) SMHF2815S EFFICIENCY EFFICIENCY (%) 2 4 6 8 1 0 1 2 1 4 16V 40V 28V FREQUENCY (kHz) SMHF SERIES AUDIO REJECTION ATTENUATION (dB) –100 0.1 1 1 0 100 –90 –80 –70 –60 –50 –40 –20 –10 –30 1ms/div 16V TO 40V SMHF2805S STEP LINE RESPONSE 500mV/div. VIN 20V/div. VOUT Figure 9 Figure 10 Figure 11 50µs/div 50% 100% SMHF2805S STEP LOAD RESPONSE 100mV/div. 50% to 100% 100% to 50% Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 9 of 15 Rev D - 20070404 www.craneae.com

POSITIVE OUTPUT LOAD (% OF TOTAL LOAD) –VOUT WITH SHIFT IN LOAD BALANCE CROSS REGULATION OUT VOLTAGE CHANGE (%) –10 1000 20 40 60 80 2812D 2815D 2805D OUTPUT POWER (Watts) 50 mV DROP LOW LINE DROPOUT VS. LOAD INPUT VOLTAGE (Volts) 10 11 12 13 14 15 SMHF2812S&D SMHF2815S&D SMHF2805S&D OUTPUT LOAD (%) COND. A: 50% LOAD +V; 50% to 10% –V COND. B: 50% LOAD –V; 50% to 10% +V SMHF2805D/SMHF2812D/SMHF2815D CROSS REGULATION OUT VOLTAGE CHANGE (%) –10 10 20 30 40 50 2815D 2812D 2812D COND B COND A 2805D 2805D Figure 18 Figure 20Figure 19 50µs/div 50% 100% SMHF2815D +VOUT STEP LOAD RESPONSE 100mV/div. 50% to 100% 100% to 50% PO= 7.5 W 50µs/div 20% 100% SMHF+2815D VOUT STEP LOAD RESPONSE 100mV/div. 20% to 100% 100% to 20% PO= 7.5 W Figure 15 Figure 16 Figure 17 2 ms/div SMHF2815D TURN-ON INTO FULL LOAD 20V/div. VIN 5V/div. +VOUT –VOUT 200µs/div 10% 100% SMHF2805S STEP LOAD RESPONSE 100mV/div. 10% to 100% 100% to 10% 1 ms/div 16V TO 40V SMHF2815D STEP LINE RESPONSE 200mV/div. VIN 20V/div. +VOUT 2 ms/div SMHF2805S TURN-ON INTO FULL LOAD 1V/div. VIN 20V/div. VOUT POUT= 12W Figure 12 Figure 14Figure 13 Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 10 of 15 Rev D - 20070404 www.craneae.com

0.000 0.205 (5.21) 0.505 (12.83) 0.705 (17.91) 0.905 (22.99) 1.105 (28.07) 0.330 max. (8.38) 0.000 0.25 (6.35) 0.000 0.160 (4.06) 0.960 (24.38) 1 2 3 4 5 0.030 dia. (0.76) 8 7 6 BOTTOM VIEW CASE E1 Projection Weld Squared corner and dot on top of case indicate pin one. Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal Case E1, Rev C, 20061221 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright © 1999-2006 Interpoint Corp. All rights reserved. 1.130 max. (28.70) 1.460 max. (37.08) Figure 21: caSe e1 Crane Aerospace & Electronics Power Solutions Page 11 of 15 Rev D - 20070404 smHF single and dual dc/dc converter cases www.craneae.com

1.590 (40.39) 0.128 dia (3.25) 0.030 dia. (0.76) Flanged cases: Designator "F" required in Case Option position of model number. BOTTOM VIEW CASE G1 0.000 0.205 (5.21) 0.505 (12.83) 0.705 (17.91) 0.905 (22.99) 1.105 (28.07) 0.000 0.160 (4.06) 0.960 (24.38) 1 2 3 4 5 8 7 6 0.140 (3.56) 0.560 (14.22) 0.330 max. (8.38) 0.000 0.25 (6.35) Squared corner and dot on top of case indicate pin one. Projection Weld Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Cold Rolled Steel/Nickel/Gold Pins #52 alloy/Gold compression glass seal Case G1, Rev C, 20061221 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright © 1999-2006 Interpoint Corp. All rights reserved. 1.130 max. (28.70) Flange thickness: 0.047 (1.19) 2.005 max (50.93) 2.005 max. (50.93) Figure 22: caSe g1 Crane Aerospace & Electronics Power Solutions Page 12 of 15 Rev D - 20070404 smHF single and dual dc/dc converter cases www.craneae.com

Class H and K, MIl-PRF-38534 ElEMEnt EvaluatIon COmpOnent-level test perfOrmed spaCe prOtOtype (O) nOn-Qml1 Class h Qml Class k Qml M/s2 P3 M/s2 P3 M/s2 P3 Element Electrical yes no yes yes yes yes Element Visual no no yes yes yes yes Internal Visual no N/A yes N/A yes N/A Temperature Cycling no no no no yes yes Constant Acceleration no no no no yes yes Interim Electrical no N/A no N/A yes N/A Burn-in no N/A no N/A yes N/A Post Burn-in Electrical no N/A no N/A yes N/A Steady State Life no N/A no N/A yes N/A Voltage Conditioning Aging N/A no N/A no N/A yes Visual Inspection no no N/A no N/A yes Final Electrical no no yes yes yes yes Wire Bond Evaluation4 no no yes yes yes yes SEM no N/A no N/A yes N/A SLAM™/C-SAM: Input capacitors only (Add’l test, not req. by H or K) no no no yes no yes Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components 4. Not applicable to EMI filters that have no wirebonds. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAM™: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 13 of 15 Rev D - 20070404 www.craneae.com

Class H and K, MIl-PRF-38534 EnvIRonMEntal sCREEnIng end item-level test perfOrmed spaCe prOtOtype (O) nOn-Qml1 Class h Qml Class k Qml Non-destruct bond pull2 Method 2023 no yes3 yes Pre-cap Inspection Method 2017, 2032 yes yes yes Temperature Cycle (10 times) Method 1010, Cond. C, -65°C to 150°C, ambient yes yes yes Constant Acceleration Method 2001, 3000 g yes yes yes PIND Test Method 2020, Cond. A no yes3 yes Pre burn-in test yes yes yes Burn-in Method 1015, 125°C case, typical 96 hours 160 hours 2 x 160 hours (includes mid-BI test) yes no no no yes no no no yes Final Electrical Test MIL-PRF-38534 Group A, Subgroups 1 through 6 -55°C, +25°C, +125°C case yes yes yes Radiography Method 2012 N/A N/A N/A Post Radiography Electrical Test Room temperature N/A N/A yes Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C yes yes yes yes yes yes Final visual inspection Method 2009 yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534. 2. Not applicable to EMI filters that have no wirebonds. 3. Not required by DSCC but performed to assure product quality. Crane Aerospace & Electronics Power Solutions smHF single and dual dc/dc converters Page 14 of 15 Rev D - 20070404 www.craneae.com

Class H and K, MIl-PRF-38534 RadIatIon assuRanCE RadIatIon HaRdnEss assuRanCE lEvEls EnvIRonMEntal sCREEnIng lEvEls sPaCE PRototYPE (o) n o n-QMl3 Class H QMl Class K QMl O2: Standard, no radiation guarantee OO HO N/A p5: Radiation tolerant–Tested lots up to 30 K Rads (Si) total dose SEU guarantee up to 40 MeV N/A HP4 KP4 r5: Radiation tolerant–Tested lots up to 100 K Rads (Si) total dose SEU guarantee up to 40 MeV N/A HR

4 KR4

f5: [smrt only] Radiation tolerant–Tested lots up to 300 K Rads (Si) total dose SEU guar- antee up to 60 MeV N/A N/A KF h1,5: Radiation tolerant–Tested lots up to 1,000 K Rads (Si) total dose N/A HH4 KH4 Notes: 1. Our EMI filters are designed exclusively with passive components providing maximum tolerance for space environment requirements. 2. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. 3. Space Prototype (O), non-QML, products do not meet all of the requirements of MIL-PRF-38534. 4. Redmond site, Interpoint, has a Radiation Hardness assurance plan on file with DSCC. Our SMD products with RHA “P”, “R," "F" and "H" code meet DSCC requirements. 5. Space converters are available with Radiation Hardness Assurance (RHA) levels of “O” and “R” with the following exceptions: SMRT28xxx is only available with Radiation Hardness Assurance (RHA) levels of “O” “P”, “R” and “F”. SMHP120xxx is only available with Radiation Hardness Assurance (RHA) level of “O”. Space filters are only available with Radiation Hardness Assurance (RHA) levels of “O” and “H”. Crane Aerospace & Electronics Power Solutions SMHF Single and Dual, Rev D - 20070404. This revision supercedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Page 15 of 15 smHF single and dual dc/dc converters