1SMB40CAT3G TVS DIODE 40VWM 64.5VC SMB by On Semiconductor. Bidirectional, 600W peak pulse power, surface mount.
Mfr Part #:

1SMB40CAT3G

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
TVS DIODE 40VWM 64.5VC SMB by On Semiconductor. Bidirectional, 600W peak pulse power, surface mount.
✓ Total Stock: 3,213 pcs
$ Price Range: $0.35

1SMB40CAT3G Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,958 pcs
2958 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
255 pcs
255 pcs On Request 1 On Request On Request On Request On Request On Request

1SMB40CAT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Bidirectional Channels
Capacitance @ Frequency
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Supplier Device Package
Tape & Reel
Type
Voltage

1SMB40CAT3G Description

Short technical summary and product information.

The 1SMB40CAT3G is a bidirectional transient voltage suppression (TVS) diode manufactured by On Semiconductor. It is designed to protect sensitive electronics from voltage transients induced by lightning or other transient events. The device features a reverse standoff voltage of 40V and a maximum clamping voltage of 64.5V at 9.3A peak pulse current (10/1000µs waveform). With a peak pulse power rating of 600W, it provides robust protection for general-purpose applications.

 

This TVS diode uses Zener technology and offers a typical capacitance of 220pF at 1MHz. It is not intended for power line protection. The device is housed in a surface-mount DO-214AA (SMB) package, making it suitable for automated assembly. It operates over a wide temperature range from -65°C to 150°C (junction).

 

The 1SMB40CAT3G is commonly used in general-purpose circuit protection applications, such as I/O interfaces, power supply lines, and communication ports. Its bidirectional configuration simplifies design by protecting both polarities with a single device. The SMB package provides a compact footprint while maintaining good power dissipation capabilities.

1SMB40CAT3G Quick Information

Product Type: TVS Diode
Canonical Name: TVS Diode, Bidirectional, 40V Standoff, 64.5V Clamping, 600W
Subcategory: Bidirectional TVS Diode

1SMB40CAT3G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1
REACH Status: Non-Compliant

1SMB40CAT3G Estimated Pricing

Qty Low High
865+ $0.35 $0.35

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

1SMB40CAT3G Features

  • 600W peak pulse power for robust protection.
  • Bidirectional clamping for single-device solution.
  • Surface mount SMB package for automated assembly.
  • 40V standoff voltage for 40V lines.
  • Wide operating temperature range -65°C to 150°C.

1SMB40CAT3G Applications

  • Protects general-purpose I/O interfaces.
  • Used in power supply rail protection.
  • Ideal for communication port transient suppression.

1SMB40CAT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the 1SMB40CAT3G?

The reverse standoff voltage is 40V.

What is the clamping voltage?

The maximum clamping voltage is 64.5V at 9.3A peak pulse current (10/1000µs).

What is the peak pulse current rating?

The peak pulse current is 9.3A (10/1000µs).

What package does the 1SMB40CAT3G come in?

It comes in a surface mount DO-214AA (SMB) package.

Is this TVS diode bidirectional?

Yes, it has 1 bidirectional channel.

What is the operating temperature range?

The operating temperature range is -65°C to 150°C (junction).

Does the 1SMB40CAT3G provide power line protection?

No, power line protection is not supported.

1SMB40CAT3G Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
View All Alternate Parts
1SMB40CAT3
1SMB40CAT3
On Semiconductor
1SMB40CAT3 is a 600W bidirectional Zener TVS diode from On Semiconductor with a working reverse voltage of 40V and clamping voltage of 64.5V. It comes in a surface mount DO-214AA (SMB) package.
View Part
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