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600W Surface Mount Transient Voltage Suppressor

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SMBJ40CA General Description

Direction Type = Bi-Directional / Reverse Stand-off Voltage Max. V = 40 / Clamping Voltage V = 64.5 / Peak Pulse Power Dissipation W = 600 / Peak Pulse Current A = 9.3 / Breakdown Voltage Min. V = 44.4 / Breakdown Voltage Max. V = 49.1 / Operating Temperature Max. °C = 150 / Operating Temperature Min. °C = -65 / Reverse Leakage Current Max. uA = 1 / Voltage ESD Air Gap Max. kV = 30 / Voltage ESD Contact Max. kV = 30 / Pins = 2 / Package Type = DO-214AB / Mounting Type = SMD / MSL = Level-1 / Packaging = Tape & Reel / Reflow Temperature Max. °C = 217

smbj40ca smbj40ca

Key Features

  • Excellent clamping capability
  • Low incremental surge resistance
  • Typical I
  • R
  • less than 1µA above 12V
  • For surface mounted applications to optimize board space
  • Low profile package
  • Typical failure mode is short from over-specified voltage or current
  • Whisker test is conducted based on JEDEC JESD201A per its table 4a and 4c
  • IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact)
  • ESD protection of data lines in accordance with IEC 61000-4-2 (IEC801-2)
  • EFT protection of data lines in accordance with IEC 61000-4-4 (IEC801-4)
  • Built-in strain relief
  • Fast response time: typically less than 1.0ps from 0V to BV min
  • 600W peak pulse power capability at 10×1000μs waveform, repetition rate (duty cycles):0.01%
  • Typical maximum temperature coefficient ΔV
  • BR
  • = 0.1% × V
  • BR
  • @25°C × ΔT
  • Glass passivated chip junction
  • High temperature soldering guaranteed: 260°C/40 seconds at terminals
  • Plastic package has underwriters laboratory flammability 94V-O
  • Matte tin lead–free plated
  • Halogen free and RoHS compliant


  • TVS devices are ideal for the protection of I/O Interfaces, V
  • CC
  • bus and other vulnerable circuits used in Telecom, Computer, Industrial and Consumer electronic applications.


Category Circuit ProtectionTransient Voltage Suppressors (TVS)TVS Diodes Mfr Littelfuse Inc.
Series SMBJ Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active Type Zener
Bidirectional Channels 1 Voltage - Reverse Standoff (Typ) 40V
Voltage - Breakdown (Min) 44.4V Voltage - Clamping (Max) @ Ipp 64.5V
Current - Peak Pulse (10/1000µs) 9.3A Power - Peak Pulse 600W
Power Line Protection No Applications General Purpose
Capacitance @ Frequency - Operating Temperature -65°C ~ 150°C (TJ)
Mounting Type Surface Mount Package / Case DO-214AA, SMB
Supplier Device Package DO-214AA (SMBJ)

Service Policies and Others

After-Sales & Settlement Related

payment Payment

We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

If you have specific preferences or requirements for payment channels, please contact our sales team. 

customers are required to pay all possible fees, including sales tax,customs fees, etc.

shipping Shipping And Packing
Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

warranty Warranty & Returns

Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.

Ratings and Reviews

E**a 2023-08-12

Finally order received. Very satisfied. Instructions in japanese or chinese, no problem there is time to learn the language. Seller recommended.

J**n 2023-05-07

Nice PCBs for smd experimenting. I ordered 3 (×10) and received also 30. ( 1pcb with 14 and 1pcb with 16) They are easy to separate in 30 individual pcbs See picture.

M**n 2022-07-24

14.4.2019- 26.6.2019 a long way.



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Availability: 3882 PCS

Qty. Unit Price(USD) Ext. Price
20+ $0.032 $0.64
200+ $0.025 $5.00
600+ $0.021 $12.60
3000+ $0.019 $57.00
9000+ $0.018 $162.00
21000+ $0.017 $357.00

The prices below are for reference only.