DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 6
Technical content
TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. © TT electronics plc 04.12
- 20W High Power Resistors
- TO-263 Surface Mount
- RoHS Compliant.
- Non-Inductive, Small, 20 watt high power resistor.
- TO-263 surface mount package offering a very low thermal resistance.
- Small thin package for high density PCB installation.
- Suitable for board mounting with either solder or clip.
- High frequency emitter resistors in switching power supplies.
- High precision CRT colour video amplifiers.
- High frequency snubber and pulse handling circuits.
- Pulse generator load resistors.
- In-rush current protection.
- Bleeder Resistors. ITEMS SPECIFICATION TEST CONDITIONS Power Rating 20 watt -55°C to +25°C Flange Temperature 2.0 watt Without Heatsink Thermal Resistance 3.3°C/ W Resistor Hotspot to Flange Resistance Range 0.01 - 0.09 Ω 0.1 - 9.1Ω 10 - 220Ω Up to 51KΩ also available Nominal Resistance Series E6 E24 E24 Including 2.5 Ω and 5.0Ω TCR (ppm/°C) 250 100 50 For -55°C to +155°C Tolerance ±5% ±1% & ±5% ±1% Operation Temperature Range -55°C to +155°C Maximum Operating Voltage 500V or √PR Dielectric Withstanding Voltage 2000 Vdc 60 Seconds Load Life ǻR = ±1% +0.5Ω 25°C, 90 min ON, 30 min OFF, 1000 Hours Humidity ǻR = ±1% +0.5Ω 40°C, 90 - 95%RH,DC 0.1W, 1000 Hours Temperature Cycle ǻR = ±1% +0.5Ω -55°C, 30 min, +155°C, 30 min, 5 cycles Soldering Heat (Max.) ǻR = ±1% +0.5Ω 250 ± 5°C, 3 seconds Solderability Minimum 90% Coverage 230 ± 5°C, 3 seconds Insulation Resistance Over 1,000 Meg Ω Between Terminals and Tab Vibration ǻR = ±0.25% +0.5Ω Electrical Notes: 1. Electrically isolated metal tab. 2. Contact Factory for custom products, non-standard values and tolerances 3. Current Rating: 25A Maximum.
TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. © TT electronics plc 04.12 Tape Dimensions & Orientation Dimensions (mm) SMHP A 10.1 ± 0.2 B 10.3 ± 0.2 C 4.5 ± 0.2 D 5.0 ± 1.0 E 2.2 ± 0.2 F 2.5 ± 0.5 G 2.75 ± 0.2 H 0.5 ± 0.05 J 0.75 ± 0.05 K 1.5 ± 0.05 L 5.08 ± 0.10 M 1.5 ± 0.05
MODEL SMHP SMHP Series General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. © TT electronics plc 04.12
Ordering Information
Resistance Code: 0.1Ω : 0R100 50Ω : 500 First two digits significant, last digit denotes number of trailing zeros Tape & Reel: 13” Reel (500 pcs per reel) Tolerance: J = 5% Tolerance F = 1% Tolerance Pad Dimensions (x,y mm) P 90°C, 35µm (W) 50,40 4.5 45,35 4 40,30 3.5 35,25 3 20,10 2 FR4 Thermal PCB Characterisation Derating Curve Temperature Rise Notes: Characterisation carried out using 35µm PCB Copper pad weights, with the temperature of 90°C used as a maximum reference on the PCB. P90°C, 35µm (W) is power when the measurement point reaches 90°C.
TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. © TT electronics plc 10. 11
- 245°C reflow compatible
- TO-263 housing
- Low inductance and capacitance for high frequency circuits
- 25W power rating
- High stability film resistance elements
- RoHS compliant s s s s s s Electrical Data IRC’s SMHP series resistors satisfy demanding applications for accurate and stable power resistors housed in the convenient TO-263 case. The resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal resistance and ensuring high insulation resistance between terminals and metal back plate. The non-inductive design makes these products especially useful in high frequency and high speed pulse applications. Power Rating 1 Voltage Rating4 Thermal Resistance Resistance Range Tolerances Nominal Resistance Series5 Typ. TCR (ppm/°C) Inductance Capacitance Heatsink2 Free Air3 Min Max 25W 2.5W 500 V 3.3°C/W 0.01Ω 0.09Ω ±1%, ±5% E24 Includes 2.5 & 5.0 multiplier See Chart <10nH <2pF0.1Ω 9.1Ω 10 Ω 51KΩ 1Maximum current 25 amps 2Power rating based on 25°C case temperature 3Power rating based on 25°C ambient temperature 4Maximum voltage 500V or P x R 5Contact factory for availability of resistance or tolerance values outside this range Pulse Energy Durability 10K 100 Pulse Width (seconds) Pulse Peak (Watts) 10µ 100µ 1m 10m 100m Damage Level Safety Zone Temperature Rise Data Power (Watts) 120 100 00 5 10 15 20 25 30 35 $Tfilm (°C) Resistor Film Temp Rise with Respect to Tab Temp Power Derating Data 155°25° 100 % of Rated Power Tab Temperature (°C) Typical TCR For Low Values 0.01 0.1 1.0 Resistance (Ohms) 250 200 150 100 TCR (ppm/°C) 0 to 100°C
TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. © TT electronics plc 10. 11 Physical Data Test Method Specification - Performance Load Life 1,000 Hours @ 25°C; 90 minutes on, 30 minutes off ±(1.0% + 1m Ω) Humidity 1000 hours; 40°C, 90-95% RH, 0.1W DC ±(1.0% + 1m Ω) Temperature Cycle 5 cycles; 30 minutes @ -55°C, 30 minutes at +155°C ±(0.25% + 1m Ω) Short Time Overload 2X Rated Power, not to exceed 1.5X Rated Voltage for 5 seconds, 25° w/ Heat Sink ±(0.25% + 1m Ω) Vibration 10 cycles; X, Y , Z axis, amplitude 0.75mm, 100- 2000Hz sweep/min ±(0.25% + 1m Ω) Insulation Resistance Between terminals and tab >1000M Ω Dielectric Withstanding Voltage Terminals to tab; 60sec, 1mA 2000 volts AC Resistance to Solder Heat 350 ± 5°C for 3 seconds ±(0.10% + 1m Ω) Solderability 230 ± 5°C, 3sec. >95% coverage Operating Temperature Range -55°C to +155°C Environmental Data Dim In (nom) mm A 0.398 10.1 ±0.2 B 0.406 10.3 ±0.2 C 0.177 4.5 ±0.2 E 0.197 5.0 ±1.0 F 0.098 2.5 ±0.5 G 0.087 2.2 ±0.2 H 0.108 2.75 ±0.2 J 0.020 0.5 ±0.05 K 0.030 0.75 ±0.05 L 0.059 1.5 ±0.05 M 0.200 5.08 ±0.1 N 0.059 1.5 ±0.05 P 0.291 7.4 ±0.1 Lead & Tab Material Tin Plated Copper Q 0.325 8.3 ±0.2 Part Weight 1.5g R 0.100 2.5 ±0.2 Recommended minimum footprint dimensions. All dimensions are in millimeters (mm). Tab, Matte Sn Plated Cu Joint, Solder Substrate, Alumina Resistor, Ni-Cr or RuO Leads Joint, Solder Leads, Sn Plated Cu Case, Epoxy UL94-V0 Insulated Between Tab and Resistor 11.0 10.0 16.0 3.50 1.60 5.08 N G B E F J H C K A L M Q R P
TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. © TT electronics plc 10. 11 For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. Ordering Data Prefix TFP - SMHP25LF - 1R50 - J - L01 Style SMHP25LF = 25W, TO-263 style power resistor Resistance Code 4-digit resistance code. Ex: 0R05 = 0.05Ω, 10R0 = 10Ω , 1K00 = 1KΩ Absolute Tolerance Code J = ±5%; F = ±1% Packaging Code L01 = RoHS compliant tube (50 pcs per tube) L05 = RoHS compliant reel (500 pcs per reel) Application Notes 1. Resistance measurement shall be made at the terminal foot. 2. Thermal design should satisfy the following equation: Tab Temperature (T T) + [Thermal Resistance (RQJT ) x Power applied (Watts)] ≤ 155°C over the full operating temperature of the application. 3. Resistor film temperature is not to exceed 155°C during operation. 4. This product is RoHS compliant by exemption according to RoHS directive 2002/95/EC exemptions 5 & 7, as they apply to lead in glass and internal solder connections. Solder Reflow Profile 0 50 100 150 200 250 300 350 400 450 500 550 350 300 250 200 150 100 Temp (°C) Time (sec) 150-200°C 120-180sec 400sec to Peak Preheat Peak 20-40sec. at (240-245°C) 60-80sec above 217°C Reel Dimensions Outer Diam. 330 mm Inner Diam. 100 mm Width 27.4 mm max Qty. 500pcs/reel Reel Packaging Data Tape Dimensions Dim Nom. (mm) Tol. (mm) A0 10.77 0.1 B0 16.33 0.1 B1 17.0 0.1 E1 1.75 0.1 F 11.5 0.1 P0 4.0 0.1 P1 16.0 0.1 P2 2.0 0.1 T 0.4 0.05 T1 0.05 --- T2 6.07 0.1 W 24.0 +0.3/-0.1 T P0P2 F W user direction of unreeling Tape dimensions meet EIA-481 requirements Tube Packaging Data A D C B E F G Tube Dimensions Dim Nom. (mm) Tol. (mm) A 3.25 0.15 B 8.0 0.15 C 16.25 0.15 D 34.4 (34.0) E 6.4 (6.0) F R0.7 (R0.5) G 535.0 1.0