SMBG40CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBG40CA-M3/5B is a bidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface-mount component is designed for general-purpose transient voltage suppression applications. The device is currently in active production status and is RoHS3 compliant. Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging configurations are required, or when sourcing from different inventory channels is needed.

Substiute Parts

SMBG40CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1115SMBG40CA-M3/5B Datasheet

Current PartRFQ

SMBG40CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 3995SMBG40CA-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by strict equivalence of electrical and mechanical parameters. The SMBG40CA-M3/5B can be substituted with parts that maintain identical specifications across the following critical parameters:

• 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
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

The substitute part SMBG40CA-E3/52 meets all these electrical and mechanical requirements and is manufactured by the same supplier within the same TransZorb® series.

Parameter Comparison

Engineering Selection Recommendations

Both SMBG40CA-M3/5B and SMBG40CA-E3/52 are active production parts from Vishay General Semiconductor - Diodes Division and carry identical RoHS3 compliance and REACH unaffected status. Both parts are classified as MSL 1 (Unlimited moisture sensitivity level), indicating no special moisture handling requirements during storage or assembly.

The primary difference between these parts is the operating temperature range. The SMBG40CA-M3/5B supports -65°C to 175°C, while the SMBG40CA-E3/52 supports -55°C to 150°C. Selection between these parts should be based on the specific thermal requirements of the application. If the application requires operation below -55°C or above 150°C, the SMBG40CA-M3/5B is the appropriate choice. For applications within the -55°C to 150°C range, either part is suitable.

Frequently Asked Questions (FAQ)

Q: Can SMBG40CA-E3/52 be used as a direct replacement for SMBG40CA-M3/5B?

A: Yes, SMBG40CA-E3/52 is a direct electrical and mechanical substitute for SMBG40CA-M3/5B provided the application operating temperature remains within -55°C to 150°C. Both parts share identical electrical specifications, package configuration (DO-215AA, SMB Gull Wing), and mounting type (Surface Mount).

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by equivalence in voltage ratings (Reverse Standoff, Breakdown, and Clamping), peak pulse current, peak pulse power, package type, and mounting configuration. All these parameters are identical between SMBG40CA-M3/5B and SMBG40CA-E3/52.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and carry identical MSL 1 (Unlimited) moisture sensitivity ratings. Both are active production parts from the same manufacturer.

Q: What is the significance of the different operating temperature ranges?

A: The operating temperature range defines the maximum and minimum junction temperatures at which the device maintains its specified electrical characteristics. SMBG40CA-M3/5B operates from -65°C to 175°C, while SMBG40CA-E3/52 operates from -55°C to 150°C. Selection should be based on the thermal environment of the application.

Q: Are these parts interchangeable at the PCB assembly level?

A: Yes. Both parts use identical DO-215AA (SMB Gull Wing) packaging and surface-mount configuration, making them mechanically and electrically interchangeable at the PCB assembly level, subject to the operating temperature constraints noted above.