SMBJ40CA The SMBJ40CA is a 600W bidirectional TVS diode from Littelfuse with a 40V reverse standoff voltage. It is housed in an SMD DO-214AA (SMB) package.
Mfr Part #:

SMBJ40CA

Available from 4 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The SMBJ40CA is a 600W bidirectional TVS diode from Littelfuse with a 40V reverse standoff voltage. It is housed in an SMD DO-214AA (SMB) package.
Total Stock: 10,133 pcs
$ Price Range: $0.08 - $0.57

SMBJ40CA Available from 4 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
6,000 pcs
6000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Non-Authorised Inventory information
3,362 pcs
3362 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
655 pcs
655 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
Non-Authorised Inventory information
116 pcs
116 pcs On Request 1 On Request On Request 17+ On Request On Request

SMBJ40CA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Bidirectional Channels
Current
Halogen Free
Mounting Type
Operating Temperature
Peak Forward Surge Current
Peak Pulse Power
Power
Power Line Protection
Reverse Standoff Voltage
Steady State Power Dissipation
Storage Temperature
Supplier Device Package
Tape & Reel
Type
Voltage

SMBJ40CA Description

Short technical summary and product information.

The SMBJ40CA is a 600W bidirectional Transient Voltage Suppressor (TVS) diode from Littelfuse, designed for general purpose surge and ESD protection. It features a reverse standoff voltage of 40V and a clamping voltage of 64.5V at a peak pulse current of 9.3A. The device can handle a peak forward surge current of 100A (8.3ms) and has a steady state power dissipation of 5.0W. It operates over a junction temperature range of -65°C to 150°C (note a datasheet discrepancy of -55°C minimum). The diode is housed in a surface mount DO-214AA (SMB) package, suitable for automated assembly. It is commonly used in applications such as IEC 61000-4-2 ESD, IEC 61000-4-4 EFT, and IEC 61000-4-5 surge protection. Compliance data for RoHS and REACH is unverified; confirm with manufacturer before use.

SMBJ40CA Quick Information

Product Type: TVS Diode
Series: SMBJ
Canonical Name: Littelfuse SMBJ40CA Bidirectional TVS Diode
Subcategory: Transient Voltage Suppressor

SMBJ40CA Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: Non-Compliant
Lead Free: Yes

SMBJ40CA Estimated Pricing

Qty Low High
1+ $0.57 $0.57
10+ $0.35 $0.35
100+ $0.22 $0.22
500+ $0.17 $0.17
1,000+ $0.15 $0.15
3,000+ $0.11 $0.11
6,000+ $0.10 $0.10
9,000+ $0.09 $0.09
15,000+ $0.09 $0.09
21,000+ $0.08 $0.08
30,000+ $0.08 $0.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

SMBJ40CA Features

  • 600W peak pulse power dissipation.
  • 40V reverse standoff voltage.
  • Bidirectional TVS protection.
  • Surface mount DO-214AA package.
  • Operating temperature -65°C to 150°C.

SMBJ40CA Applications

  • General purpose surge protection.
  • Ideal for ESD protection circuits.
  • Suitable for portable electronics.
  • Used in power supply protection.
  • Protects sensitive ICs from transients.

SMBJ40CA FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SMBJ40CA?

40 V.

What is the clamping voltage of the SMBJ40CA?

64.5 V.

What is the peak pulse current rating of the SMBJ40CA?

9.3 A.

What is the package type of the SMBJ40CA?

DO-214AA (SMB) surface mount package.

What is the peak pulse power rating of the SMBJ40CA?

600 W (tp=1ms).

What is the operating temperature range of the SMBJ40CA?

-65°C to 150°C (junction).

How many bidirectional channels does the SMBJ40CA have?

1.

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