The BOURNS SMCJ40A is a high-performance TVS (Transient Voltage Suppressor) diode designed to protect electronic circuits from voltage spikes and transient events. Manufactured in Taiwan, this device conforms to industry standards and offers reliable surge suppression capabilities.
Unidirectional TVS diode with a maximum working peak reverse voltage of 40V
Peak pulse power dissipation of 1500 Watts (1 ms pulse)
Peak forward surge current of 200 Amps (8.3 ms single half sine wave)
Fast response time with response times less than 1.0 picosecond for unidirectional devices
Conforms to JEDEC standards for ease of handling and placement
Compact tape package for automated surface-mount assembly
Electrical Characteristics (@ TA = 25 °C):
Parameter
Symbol
Value
Unit
Minimum Peak Pulse Power Dissipation (TP = 1 ms)
P PK
1500
Watts
Peak Forward Surge Current 8.3 ms
I FSM
200
Amps
Steady State Power Dissipation @ TL = 75 °C
P M(AV)
5.0
Watts
Maximum Instantaneous Forward Voltage @ I = 100 A PP (Unidirectional)
V F
3.5
Volts
Operating & Storage Temperature Ranges:
Operating Temperature: -55°C to +150°C
Storage Temperature: -55°C to +150°C
Physical dimensions and packaging details are available in the datasheet. This device is UL recognized (File Number: E153537) and suitable for applications requiring robust transient suppression.
For more detailed specifications, please refer to the datasheet.
Note: The datasheet was not processed; please search the internet for the part number SMCJ40A for more details.
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{"id":10020739875133,"title":"SMCJ40A","handle":"smcj40a","description":"\u003ch3\u003eBOURNS SMCJ40A Transient Voltage Suppressor Diode\u003c\/h3\u003e\n\u003cp\u003eThe BOURNS SMCJ40A is a high-performance TVS (Transient Voltage Suppressor) diode designed to protect electronic circuits from voltage spikes and transient events. Manufactured in Taiwan, this device conforms to industry standards and offers reliable surge suppression capabilities.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SMCJ40A\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e BOURNS\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e TW (Taiwan)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA (Each)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e TAPE\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-BO\/SMCJ40A.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eUnidirectional TVS diode with a maximum working peak reverse voltage of 40V\u003c\/li\u003e\n \u003cli\u003ePeak pulse power dissipation of 1500 Watts (1 ms pulse)\u003c\/li\u003e\n \u003cli\u003ePeak forward surge current of 200 Amps (8.3 ms single half sine wave)\u003c\/li\u003e\n \u003cli\u003eFast response time with response times less than 1.0 picosecond for unidirectional devices\u003c\/li\u003e\n \u003cli\u003eConforms to JEDEC standards for ease of handling and placement\u003c\/li\u003e\n \u003cli\u003eCompact tape package for automated surface-mount assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Characteristics (@ TA = 25 °C):\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n \u003cthead\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 \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMinimum Peak Pulse Power Dissipation (TP = 1 ms)\u003c\/td\u003e\n \u003ctd\u003eP PK\u003c\/td\u003e\n \u003ctd\u003e1500\u003c\/td\u003e\n \u003ctd\u003eWatts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePeak Forward Surge Current 8.3 ms\u003c\/td\u003e\n \u003ctd\u003eI FSM\u003c\/td\u003e\n \u003ctd\u003e200\u003c\/td\u003e\n \u003ctd\u003eAmps\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSteady State Power Dissipation @ TL = 75 °C\u003c\/td\u003e\n \u003ctd\u003eP M(AV)\u003c\/td\u003e\n \u003ctd\u003e5.0\u003c\/td\u003e\n \u003ctd\u003eWatts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum Instantaneous Forward Voltage @ I = 100 A PP (Unidirectional)\u003c\/td\u003e\n \u003ctd\u003eV F\u003c\/td\u003e\n \u003ctd\u003e3.5\u003c\/td\u003e\n \u003ctd\u003eVolts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eOperating \u0026amp; Storage Temperature Ranges:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eOperating Temperature: -55°C to +150°C\u003c\/li\u003e\n \u003cli\u003eStorage Temperature: -55°C to +150°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePhysical dimensions and packaging details are available in the datasheet. This device is UL recognized (File Number: E153537) and suitable for applications requiring robust transient suppression.\u003c\/p\u003e\n\u003cp\u003eFor more detailed specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-BO\/SMCJ40A.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: The datasheet was not processed; please search the internet for the part number SMCJ40A for more details.\u003c\/em\u003e\u003c\/p\u003e\n\u003c!-- Disclaimers --\u003e\n\u003cp\u003eWarning: Cancer and Reproductive Harm - \u003ca href=\"http:\/\/www.P65Warnings.ca.gov\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e","published_at":"2025-08-12T06:22:52+05:30","created_at":"2025-08-12T06:22:52+05:30","vendor":"Waldom Electonics","type":"","tags":["BOURN","IMPORT_CSV","TVS","WLDM"],"price":1954,"price_min":1954,"price_max":1954,"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":50610591498557,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SMCJ40A","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SMCJ40A","public_title":null,"options":["Default Title"],"price":1954,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"SMCJ40A","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/SMCJ40A_39191770_6b5a7a55.jpg?v=1754959976"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SMCJ40A_39191770_6b5a7a55.jpg?v=1754959976","options":["Title"],"media":[{"alt":null,"id":45792842580285,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SMCJ40A_39191770_6b5a7a55.jpg?v=1754959976"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SMCJ40A_39191770_6b5a7a55.jpg?v=1754959976","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eBOURNS SMCJ40A Transient Voltage Suppressor Diode\u003c\/h3\u003e\n\u003cp\u003eThe BOURNS SMCJ40A is a high-performance TVS (Transient Voltage Suppressor) diode designed to protect electronic circuits from voltage spikes and transient events. Manufactured in Taiwan, this device conforms to industry standards and offers reliable surge suppression capabilities.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SMCJ40A\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e BOURNS\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e TW (Taiwan)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA (Each)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e TAPE\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-BO\/SMCJ40A.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eUnidirectional TVS diode with a maximum working peak reverse voltage of 40V\u003c\/li\u003e\n \u003cli\u003ePeak pulse power dissipation of 1500 Watts (1 ms pulse)\u003c\/li\u003e\n \u003cli\u003ePeak forward surge current of 200 Amps (8.3 ms single half sine wave)\u003c\/li\u003e\n \u003cli\u003eFast response time with response times less than 1.0 picosecond for unidirectional devices\u003c\/li\u003e\n \u003cli\u003eConforms to JEDEC standards for ease of handling and placement\u003c\/li\u003e\n \u003cli\u003eCompact tape package for automated surface-mount assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Characteristics (@ TA = 25 °C):\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n \u003cthead\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 \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMinimum Peak Pulse Power Dissipation (TP = 1 ms)\u003c\/td\u003e\n \u003ctd\u003eP PK\u003c\/td\u003e\n \u003ctd\u003e1500\u003c\/td\u003e\n \u003ctd\u003eWatts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePeak Forward Surge Current 8.3 ms\u003c\/td\u003e\n \u003ctd\u003eI FSM\u003c\/td\u003e\n \u003ctd\u003e200\u003c\/td\u003e\n \u003ctd\u003eAmps\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSteady State Power Dissipation @ TL = 75 °C\u003c\/td\u003e\n \u003ctd\u003eP M(AV)\u003c\/td\u003e\n \u003ctd\u003e5.0\u003c\/td\u003e\n \u003ctd\u003eWatts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum Instantaneous Forward Voltage @ I = 100 A PP (Unidirectional)\u003c\/td\u003e\n \u003ctd\u003eV F\u003c\/td\u003e\n \u003ctd\u003e3.5\u003c\/td\u003e\n \u003ctd\u003eVolts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eOperating \u0026amp; Storage Temperature Ranges:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eOperating Temperature: -55°C to +150°C\u003c\/li\u003e\n \u003cli\u003eStorage Temperature: -55°C to +150°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePhysical dimensions and packaging details are available in the datasheet. This device is UL recognized (File Number: E153537) and suitable for applications requiring robust transient suppression.\u003c\/p\u003e\n\u003cp\u003eFor more detailed specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-BO\/SMCJ40A.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: The datasheet was not processed; please search the internet for the part number SMCJ40A for more details.\u003c\/em\u003e\u003c\/p\u003e\n\u003c!-- Disclaimers --\u003e\n\u003cp\u003eWarning: Cancer and Reproductive Harm - \u003ca href=\"http:\/\/www.P65Warnings.ca.gov\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e"}
I'm particularly impressed with how carefully the header pins are packed for the RP2350-PiZero, they arrived in perfect condition without any bent pins, which has been a persistent issue with other competitors. This attention to packaging detail really stands out.
I also received the latest A4 revision of the RP2350, which shows you maintain current inventory, that's really valuable for customers who want the most up to date components.
The delivery was quick and hassle free throughout. I'll definitely be recommending you to others!
App feedback: The discounts offered through the app are a nice bonus, but the component search function could be improved to match the ease of use on the website version. The rest of the app functions work well.
