Product Description: LITTLEFUSE P4SMA400A TVS Series 342V Uni-directional Transient Voltage Suppressor
The LITTLEFUSE P4SMA400A is a high-performance TVS diode designed for transient voltage suppression in various electronic applications. Manufactured in China, this unidirectional TVS diode offers reliable protection against voltage spikes, ensuring the safety and longevity of your electronic systems.
Key Features
Low profile SMA package for surface-mounted applications, optimizing board space
Excellent clamping capability to protect sensitive electronics
Peak pulse power capability of 400 W at 10/1000 μs waveform
Typical leakage current less than 1 μA above 12 V
Fast response time: typically less than 1.0 ps from 0 V to VBR
High temperature reflow solderable at +260 °C for 40 seconds
UL 94 V-0 flammability rating and moisture sensitivity level (MSL) level 1
Solderable tin-plated leads compliant with J-STD-002
UL 497B recognized (File No.: E198449, Guide QVGQ2)
Electrical and Mechanical Specifications
Parameter
Symbol
Value
Unit
Storage temperature range
TSTG / TJ
-55 to +150
°C
Steady state power dissipation at TL = +75°C
PM(AV)
3.3
W
Peak pulse power dissipation (10/1000 μs waveform)
PPP
400
W
Maximum instantaneous forward voltage at 100 A (unidirectional)
VF
5.0
V
Peak forward surge current, 8.3 ms single half sine wave
IFSM
60
A
Terminal thermal resistance junction to lead
RJL
30
°C/W
Thermal resistance junction to ambient
RJA
120
°C/W
Part Number and Packaging
Part Number: P4SMA400A
Manufacturer: LITTLEFUSE
Country of Origin: CN
UOM: EA (Each)
ECCN: Not specified
Package Type: T&R (Tape & Reel)
Datasheet and Additional Resources
For detailed technical information, please refer to the datasheet. Please search the internet for the part number P4SMA400A for more detailed specifications and application notes.
Disclaimer
All technical data are provided as reference. Confirm specifications with the manufacturer before use. Eaton does not authorize the use of its products in life support systems without prior approval.
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{"id":10019663774013,"title":"P4SMA400A","handle":"p4sma400a","description":"\u003ch3\u003eProduct Description: LITTLEFUSE P4SMA400A TVS Series 342V Uni-directional Transient Voltage Suppressor\u003c\/h3\u003e\n\n\u003cp\u003eThe LITTLEFUSE P4SMA400A is a high-performance TVS diode designed for transient voltage suppression in various electronic applications. Manufactured in China, this unidirectional TVS diode offers reliable protection against voltage spikes, ensuring the safety and longevity of your electronic systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eLow profile SMA package for surface-mounted applications, optimizing board space\u003c\/li\u003e\n \u003cli\u003eExcellent clamping capability to protect sensitive electronics\u003c\/li\u003e\n \u003cli\u003ePeak pulse power capability of 400 W at 10\/1000 μs waveform\u003c\/li\u003e\n \u003cli\u003eTypical leakage current less than 1 μA above 12 V\u003c\/li\u003e\n \u003cli\u003eFast response time: typically less than 1.0 ps from 0 V to V\u003csub\u003eBR\u003c\/sub\u003e\n\u003c\/li\u003e\n \u003cli\u003eHigh temperature reflow solderable at +260 °C for 40 seconds\u003c\/li\u003e\n \u003cli\u003eUL 94 V-0 flammability rating and moisture sensitivity level (MSL) level 1\u003c\/li\u003e\n \u003cli\u003eSolderable tin-plated leads compliant with J-STD-002\u003c\/li\u003e\n \u003cli\u003eUL 497B recognized (File No.: E198449, Guide QVGQ2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical and Mechanical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003cth\u003eSymbol\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003cth\u003eUnit\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eStorage temperature range\u003c\/td\u003e\n \u003ctd\u003eT\u003csub\u003eSTG \/ T\u003csub\u003eJ\u003c\/sub\u003e\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e-55 to +150\u003c\/td\u003e\n \u003ctd\u003e°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSteady state power dissipation at T\u003csub\u003eL\u003c\/sub\u003e = +75°C\u003c\/td\u003e\n \u003ctd\u003eP\u003csub\u003eM(AV)\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e3.3\u003c\/td\u003e\n \u003ctd\u003eW\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePeak pulse power dissipation (10\/1000 μs waveform)\u003c\/td\u003e\n \u003ctd\u003eP\u003csub\u003ePP\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e400\u003c\/td\u003e\n \u003ctd\u003eW\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum instantaneous forward voltage at 100 A (unidirectional)\u003c\/td\u003e\n \u003ctd\u003eV\u003csub\u003eF\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e5.0\u003c\/td\u003e\n \u003ctd\u003eV\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePeak forward surge current, 8.3 ms single half sine wave\u003c\/td\u003e\n \u003ctd\u003eI\u003csub\u003eFSM\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003eA\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTerminal thermal resistance junction to lead\u003c\/td\u003e\n \u003ctd\u003eR\u003csub\u003eJL\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e°C\/W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eThermal resistance junction to ambient\u003c\/td\u003e\n \u003ctd\u003eR\u003csub\u003eJA\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e120\u003c\/td\u003e\n \u003ctd\u003e°C\/W\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePart Number and Packaging\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: P4SMA400A\u003c\/li\u003e\n \u003cli\u003eManufacturer: LITTLEFUSE\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n \u003cli\u003eUOM: EA (Each)\u003c\/li\u003e\n \u003cli\u003eECCN: Not specified\u003c\/li\u003e\n \u003cli\u003ePackage Type: T\u0026amp;R (Tape \u0026amp; Reel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDatasheet and Additional Resources\u003c\/h3\u003e\n\u003cp\u003eFor detailed technical information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/images\/parts\/largeimages\/55516174.jpg\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e. Please search the internet for the part number P4SMA400A for more detailed specifications and application notes.\u003c\/p\u003e\n\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eAll technical data are provided as reference. Confirm specifications with the manufacturer before use. Eaton does not authorize the use of its products in life support systems without prior approval.\u003c\/p\u003e","published_at":"2025-08-11T14:54:30+05:30","created_at":"2025-08-11T14:54:30+05:30","vendor":"Waldom Electonics","type":"Diodes","tags":["342V","Diodes","EATON-ELE","IMPORT_CSV","LITTL","Transient","TVS","WLDM"],"price":3673,"price_min":3673,"price_max":3673,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50608081338685,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"P4SMA400A","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"P4SMA400A","public_title":null,"options":["Default Title"],"price":3673,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"P4SMA400A","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/P4SMA400A_55516174_08cf732c.jpg?v=1754904273"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/P4SMA400A_55516174_08cf732c.jpg?v=1754904273","options":["Title"],"media":[{"alt":null,"id":45782097527101,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/P4SMA400A_55516174_08cf732c.jpg?v=1754904273"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/P4SMA400A_55516174_08cf732c.jpg?v=1754904273","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description: LITTLEFUSE P4SMA400A TVS Series 342V Uni-directional Transient Voltage Suppressor\u003c\/h3\u003e\n\n\u003cp\u003eThe LITTLEFUSE P4SMA400A is a high-performance TVS diode designed for transient voltage suppression in various electronic applications. Manufactured in China, this unidirectional TVS diode offers reliable protection against voltage spikes, ensuring the safety and longevity of your electronic systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eLow profile SMA package for surface-mounted applications, optimizing board space\u003c\/li\u003e\n \u003cli\u003eExcellent clamping capability to protect sensitive electronics\u003c\/li\u003e\n \u003cli\u003ePeak pulse power capability of 400 W at 10\/1000 μs waveform\u003c\/li\u003e\n \u003cli\u003eTypical leakage current less than 1 μA above 12 V\u003c\/li\u003e\n \u003cli\u003eFast response time: typically less than 1.0 ps from 0 V to V\u003csub\u003eBR\u003c\/sub\u003e\n\u003c\/li\u003e\n \u003cli\u003eHigh temperature reflow solderable at +260 °C for 40 seconds\u003c\/li\u003e\n \u003cli\u003eUL 94 V-0 flammability rating and moisture sensitivity level (MSL) level 1\u003c\/li\u003e\n \u003cli\u003eSolderable tin-plated leads compliant with J-STD-002\u003c\/li\u003e\n \u003cli\u003eUL 497B recognized (File No.: E198449, Guide QVGQ2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical and Mechanical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eParameter\u003c\/th\u003e\n \u003cth\u003eSymbol\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003cth\u003eUnit\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eStorage temperature range\u003c\/td\u003e\n \u003ctd\u003eT\u003csub\u003eSTG \/ T\u003csub\u003eJ\u003c\/sub\u003e\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e-55 to +150\u003c\/td\u003e\n \u003ctd\u003e°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSteady state power dissipation at T\u003csub\u003eL\u003c\/sub\u003e = +75°C\u003c\/td\u003e\n \u003ctd\u003eP\u003csub\u003eM(AV)\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e3.3\u003c\/td\u003e\n \u003ctd\u003eW\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePeak pulse power dissipation (10\/1000 μs waveform)\u003c\/td\u003e\n \u003ctd\u003eP\u003csub\u003ePP\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e400\u003c\/td\u003e\n \u003ctd\u003eW\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum instantaneous forward voltage at 100 A (unidirectional)\u003c\/td\u003e\n \u003ctd\u003eV\u003csub\u003eF\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e5.0\u003c\/td\u003e\n \u003ctd\u003eV\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePeak forward surge current, 8.3 ms single half sine wave\u003c\/td\u003e\n \u003ctd\u003eI\u003csub\u003eFSM\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003eA\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTerminal thermal resistance junction to lead\u003c\/td\u003e\n \u003ctd\u003eR\u003csub\u003eJL\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e°C\/W\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eThermal resistance junction to ambient\u003c\/td\u003e\n \u003ctd\u003eR\u003csub\u003eJA\u003c\/sub\u003e\n\u003c\/td\u003e\n \u003ctd\u003e120\u003c\/td\u003e\n \u003ctd\u003e°C\/W\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePart Number and Packaging\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: P4SMA400A\u003c\/li\u003e\n \u003cli\u003eManufacturer: LITTLEFUSE\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n \u003cli\u003eUOM: EA (Each)\u003c\/li\u003e\n \u003cli\u003eECCN: Not specified\u003c\/li\u003e\n \u003cli\u003ePackage Type: T\u0026amp;R (Tape \u0026amp; Reel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDatasheet and Additional Resources\u003c\/h3\u003e\n\u003cp\u003eFor detailed technical information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/images\/parts\/largeimages\/55516174.jpg\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e. Please search the internet for the part number P4SMA400A for more detailed specifications and application notes.\u003c\/p\u003e\n\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eAll technical data are provided as reference. Confirm specifications with the manufacturer before use. Eaton does not authorize the use of its products in life support systems without prior approval.\u003c\/p\u003e"}
