99334 MACOM | Alldatasheet
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—|236%21 +0 aey — YF miniSMD Selection Guide and Product Data This section has two parts: + A Selection Guide that walks you through the process of selecting the correct miniSMD device for a circuit. + Product Data that outlines electrical characteristics, termination pad characteristics, agency recognition, environmental specifications, recommended pad layouts, solder reflow/rework information, tape and reel specifications, and ordering information for miniSMD devices.. miniSMD Selection Guide Follow these seven steps to select a PolySwitch miniSMD device for a circuit: 1. Define the operating parameters for the circuit. These include: + Maximum ambient operating temperature + Normal operating current + Maximum operating voltage + Maximum interrupt current 2. Select the miniSMD device that accommodates the circuit's maxi- mum ambient operating temperature and normal operating current. 3. Compare the miniSMD device’s maximum operating voltage and maximum interrupt current with the circuit's to be sure the circuit does not exceed the device ratings. 4. Check the miniSMD device's time-to-trip to be sure it will protect the circuit. 5. Verify that the circuit's ambient operating temperatures are within the miniSMD device’s operating temperature range. 6. Verify that the miniSMD device's dimensions fit the application's space considerations. 7. Independently evaluate and test the suitability and performance of the miniSMD device in the application. Wg Raychem PolySwitch Resettable Fuses miniSMD Devices 143 eee
1 . Define the circuit’s operating parameters. Fill in the following information about the circuit: Maximum ambient operating temperature ee Normal operating current OO Maximum operating voltage Maximum interrupt current 2 + Select the PolySwitch miniSMD device that will accommodate the circuit's maximum ambient operating temperature and normal operating current. Look across the top of the table below to find the temperature that most closely matches the circuit's maximum ambient operating temperature. In that column find the value equal to or greater than the circuit's nor mal operating current. Now look to the far left of that row to find the part number for the miniSMD device that will best accommodate the circuit. ' The thermal derating curve located on the next page is a normalized “ representation of the data in the table below. Ino Versus temperature Part Maximum ambient operating temperatures (°C) number —40° -20° a 20° 40° 50° 60° 70° 85° 144 miniSMD Devices Raychem PolySwitch Resettable Fuses
——— Thermal derating curve A= miniSMD020 too | «8 ~ BREE EE EE FE iniSMD050 ACK SAND DTTP rrr rrr rrr tr rr B= mini: o DP IWBSSS Tr miniSMDC050. ‘O ., 4209 a a £e a ee miniSMD075 39 a OO miniSMDCO75. 2S A i FO gp CPP re PT see iniSMD o2 OO C= miniSMD110 5 a a miniSMDC035. & B a a 2B 4g CO es] A o a OO A OO OG OO =) a HO A OO A A OO OO OO 0 a OO OO -40 -20 0) 20 40 80 Device's ambient temperature (°C) 3 » Compare maximum operating voltages and maximum interrupt currents. In the first column of the table below, find the part number you selected in Step 1. Look to the right in that row to find the device's maximum operating volfage (V max.) and maximum interrupt current (I max.). Compare both ratings with the circuit's to be sure the circuit's ratings do not exceed those of the miniSMD device. Maximum device voltages and currents Part Vv max. Imax. number (volts) (amps) EI minisSMD020 30 10 EI miniSMDC035 6 40 i miniSMDCo50 15 40 miniSMDO050 15 40 Gs miniSMDC075 13.2 40 miniSMD075 13.2 40 EQ miniSMDC110 6 40 Raychem PolySwitch Resettable Fuses miniSMD Devices 145 a
—_— “mini FE JminiSMD Surface Mount ee 4 . Determine time-to-trip. Time-to-trip is the amount of time it takes for a device to switch to a high-resistance state once a fault current has been applied across the device. Identifying the miniSMD device's time-to-trip is important in order to provide the desired protection capabilities. If the device you choose trips too fast, undesired or nuisance tripping will occur. If the device trips too slowly, the components being protected may be damaged before the device switches to a high-resistance state. The chart on the next page shows the typical time-to-trip at 20°C for each PolySwitch miniSMD device. On the chart, find the time-to-trip for the miniSMD device you selected. If the miniSMD device's time-to-trip is too fast or too slow for the circuit, go back to Step 2 and choose an alternate device or refer to the SMD selection guide for an alternate surface-mount device or the RXE and RUE selection guides for radial- leaded products. ee Typical time-to-trip at 20°C A B CDE == = = See a oe oe es es meh WR SS We We ee es ee es ee anh A Ve ee | ene EVE VA A oA a a a ens aaa ve ease = Ses eae A=miniSMD020 Ft No aaa BemmSMDCO3S A ceminsmooso = © 1 LLU NANA miniSMDC050 = ——— |, — SS ae 5 Eo D=miniSMD075 2 a eos ook \\ a, GA SS miniSMDCO75 2 [TT ANNAN cammswocii0 E94 Lax) SAAN _—— ee en os ee eens oN ee SA ON [Tt Oe 8 | [TANNA ooo LT 0.1 1 10 100 Fault current (A) 146 miniSMD Devices Raychem PolySwitch Resettable Fuses
- Verify ambient operating conditions. Ensure that your application's minimum and maximum ambient temperatures are within the operating temperature range of —40°C and 85°C. Maximum device surface temperature in the tripped state is 125°C NY 6 . Verify the miniSMD device's dimensions. Using dimensions from the table on the next page, compare the dimensions of the miniSMD device you selected with the application's space considerations. miniSMD product dimensions (millimeters/inches) Part A B Cc D E “These devices utilize a castalated termination which enhances the solder joint inspectability when instalfed on a printed circuit board Figure 1 Figure 2 Sold oe ie . Bi | Fac lol J | a Top View Side view Bottom view Top and bottom view Side view Raychem PolySwitch Resettable Fuses miniSMD Devices 147
Now that you have selected your miniSMD device, please review the device's characteristics in this section to verify that the device will - perform as required, ee _ Electrical characteristics (20°) Maximum Resistance number (A) (A) (Vde) (A) (W) (A) (s) (Q) (Q) | = Hold current—maximum current at which the device will not trip at 20°C still air ty = Trip current—minimum current at which the device will always trp at 20°C still air Vmax = Maximum voltage device can withstand without damage at rated current (| max ) Imax = Maximum fault current device can withstand without damage at rated voltage (V max ) Pa = Power dissipated from device when in the tripped state in 20°C still air R: max is measured in the nontripped state 1 hour post reflow with reflow conditions of 260°C for 20 sec Termination pad characteristics Termination pad materials Solder-piated copper Termination pad solderability Meets EIA specification RS186-9E, ANSI/J-STD-002 Category 3. ———— Agency recognition UL File # E74889 CSA File # 78165 TUV Certificate # R9477354 At the time of this printing miniSMDC035 had not received any agency recognition. Please check with your local sales office to receive agency recognition status. 148 miniSMD Devices Raychem PolySwitch Resettable Fuses eee
Environmental specifications Test Test method Conditions Resistance change Passive-aging Raychem PS300, Section 5 3.2 60°C, 1000 hours -+3% typical 85°C, 1000 hours +5% typical Humidity aging Raychem PS300, Section 5 3.1 85°C, 85% R.H , 100 days 41.2% typical Thermal shock MIL-STD-202, Method 107G 85°C, —40°C (20 times) -33% typical 125°C, -55°C (10 times) -33% typical Vibration MIL-STD-883C MIL-STD-883C No Change Solvent resistance Raychem PS300, Section 5.2 2, Freon No change with the following solvents: Trichloroethane No change Storage conditions: 40°C max., 70% R H. max ; devices should remain in sealed bags with desiccant prior to use. Devices may not meet specified values if these storage conditions are exceeded. . — EEE Recommended pad layouts The dimensions in the table below provide the recommended pad layout for each miniSMD device. Pad dimensions (millimeters/inches) : A ~B c c Device minimum nominal nominal Raychem PolySwitch Resettable Fuses miniSMD Devices 149
eee [te Mes KgminiSMD Surface Mount Solder reflow and rework recommendations 300 rd + Recommended reflow methods: 2 209 ——w + The miniSMD020, miniSMD050, 2 ly a... and miniSMDO75 devices are not g 150 5] designed to be wave soldered to 50 miniSMDC050, miniSMDC075, 0 suitable for use with wave-solder + Recommended maximum paste thickness is 0.25 mm (.010 in). + Devices can be cleaned using standard industry methods and solvents. Rework + Use standard industry practices. CAUTION: + If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. 150 miniSM0 Devices Raychem PolySwitch Resettable Fuses ee eeSESFSFSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
miniSMD tape and reel specifications (dimensions in millimeters) Sn miniSMD miniSMDCO35 Governing Specifications EIA 481-1 EIA 481-1 B, max. 5.9 4.35 E, min. ; 10.25 6.25 Tmax. 0.6 0.6 T, max. 0.1 0.1 Leader min. 390 390 Trailer min. 160 160 Reel Dimensions Amax. . 185 185 N min. 50 50 W, max. 184 14.4 Raychem PolySwitch Resettable Fuses miniSMD Devices. 151
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Ordering information
Product Tape and reel Standard description quantity package EI minismD020-2 2000 10000 . 9 miniSMDC035-2 3000 15000 I miniSMDC050-2 2000 10000 miniSMD050-2 1500 7500 EI miniSMDC075-2 2000 10000 miniSMD075-2 1500 7500 EI miniSM0C110-2 2000 10000 a Part numbering system minismoc OO0-2 ‘L_____ Tape and reel packaging Current rating Improved solder inspectability (optional) NN Part marking system oxo 5 | ; ° i 7 ; yp _— | Part ID Example SS Part Part description marking miniSMD020 2Xxa miniSMDC035 sue miniSMDC050 5XG miniSMDO50 5 aS miniSMDC075 7THL miniSMDO75 7HL miniSMDC110 1mt Raychem PolySwitch Resettable Fuses miniSMD Devices 153
| Surface Mount ZN warnine: + Operation beyond maximum ratings or improper use may result in device damage and possible electrical arcing and flame. + These devices are intended for protection against occasional over- current or overtemperature fault conditions, and should not be used when repeated fault conditions are anticipated. 154 miniSMD Devices Raychem PolySwitch Resettable Fuses Eo