SMBJ36CHE3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ36CHE3/52 is a 36V Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, housed in a DO-214AA (SMB) surface mount package. This bidirectional Zener diode is designed for transient voltage protection applications with a peak pulse power rating of 600W and peak pulse current of 9.3A at a clamping voltage of 64.3V. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	36V
Voltage - Breakdown (Min)	40V
Voltage - Clamping (Max) @ Ipp	64.3V
Current - Peak Pulse (10/1000µs)	9.3A
Power - Peak Pulse	600W
Bidirectional Channels	1
Package / Case	DO-214AA, SMB
Operating Temperature Range	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SMBJ36CHE3/52 is determined by the following critical electrical and mechanical parameters:

Mandatory Matching Parameters:

Voltage - Reverse Standoff (Typ): 36V
Voltage - Breakdown (Min): 40V
Package / Case: DO-214AA, SMB (surface mount)
Bidirectional Channels: 1
Power - Peak Pulse: 600W
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

Voltage - Clamping (Max) @ Ipp: 58.1V to 76V (within application tolerance)
Current - Peak Pulse (10/1000µs): 9.3A to 52A (higher current capability acceptable)
Operating Temperature Range: -65°C to -50°C minimum; 150°C maximum
Product Status: Active preferred (obsolete parts not suitable for new designs)

Substitute parts must maintain the same reverse standoff voltage, breakdown voltage, and package form factor. Variations in clamping voltage and peak pulse current are acceptable provided the substitute meets or exceeds the original specifications. All substitutes must be RoHS3 compliant with MSL rating of 1.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status
SMBJ36CHE3/52	Vishay General Semiconductor	36V	40V	64.3V	9.3A	600W	DO-214AA, SMB	-55°C ~ 150°C	Obsolete
SMBJ36CE3/TR13	Microchip Technology	36V	40V	64.3V	9.3A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
1SMB36CA TR13 PBFREE	Central Semiconductor Corp	36V	40V	58.1V	10.3A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SM6T42CAY	STMicroelectronics	36V	40V	76V	52A (8/20µs)	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMBJ36CA	MDD	36V	40V	58.1V	10.4A	600W	DO-214AA, SMB	-50°C ~ 150°C	Active
SMBJ36CA-13-F	Diodes Incorporated	36V	40V	58.1V	10.3A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMBJ36CA-HR	Littelfuse Inc.	36V	40V	58.1V	10.4A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SMBJ36CA-HRA	Littelfuse Inc.	36V	40V	58.1V	10.4A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active

Engineering Selection Recommendations

Primary Recommendation: SMBJ36CE3/TR13 (Microchip Technology)

This part provides the closest electrical match to the original SMBJ36CHE3/52, with identical clamping voltage (64.3V) and peak pulse current (9.3A). The part is active in production, RoHS3 compliant, and extends the operating temperature range to -65°C. Packaging is supplied in Tape & Reel format suitable for automated assembly.

Secondary Recommendations: SMBJ36CA-13-F (Diodes Incorporated) and SMBJ36CA-HR (Littelfuse Inc.)

Both parts maintain the 36V reverse standoff and 40V breakdown specifications with acceptable clamping voltage variation (58.1V). These are established manufacturers with active product status and broad market availability. SMBJ36CA-HR and SMBJ36CA-HRA extend the operating temperature range to -65°C, providing enhanced thermal margin for demanding applications.

Alternative: SM6T42CAY (STMicroelectronics)

This part offers significantly higher peak pulse current capability (52A at 8/20µs) and clamping voltage (76V), suitable for applications requiring enhanced transient suppression performance. The part carries AEC-Q101 automotive qualification and is active in production. Selection of this part should be based on application requirements for higher current handling.

Compatibility Considerations:

All recommended substitutes maintain DO-214AA (SMB) package compatibility, enabling direct PCB footprint replacement. All parts are RoHS3 compliant with MSL rating of 1. Operating temperature ranges vary between -50°C and -65°C minimum; application thermal requirements should determine final selection.

Frequently Asked Questions (FAQ)

Q: Can SMBJ36CA parts directly replace SMBJ36CHE3/52?

A: Yes. SMBJ36CA variants from multiple manufacturers (MDD, Diodes Incorporated, Littelfuse) maintain the required 36V reverse standoff voltage, 40V breakdown voltage, and DO-214AA package. Clamping voltage is reduced to 58.1V, which is within acceptable substitution parameters for this product category.

Q: What is the difference between SMBJ36CA-HR and SMBJ36CA-HRA?

A: Both parts are manufactured by Littelfuse Inc. with identical electrical specifications (36V standoff, 40V breakdown, 58.1V clamping, 10.4A peak pulse current). The designation difference reflects internal Littelfuse product line management. Both are suitable substitutes.

Q: Why does SM6T42CAY have higher peak pulse current (52A) than the original part (9.3A)?

A: SM6T42CAY is rated for 52A at 8/20µs pulse duration, while the original SMBJ36CHE3/52 is rated at 9.3A for 10/1000µs pulse duration. These represent different test conditions. The SM6T42CAY provides enhanced transient suppression capability and is suitable for applications requiring higher current handling.

Q: Are all substitute parts available in Tape & Reel packaging?

A: SMBJ36CE3/TR13, 1SMB36CA TR13 PBFREE, SMBJ36CA-HR, and SMBJ36CA-HRA are supplied in Tape & Reel format. SMBJ36CA (MDD) and SMBJ36CA-13-F are available in alternative packaging formats. Packaging selection should align with assembly process requirements.

Q: What is the operating temperature range difference between substitutes?

A: The original SMBJ36CHE3/52 operates from -55°C to 150°C. Substitutes vary between -50°C and -65°C minimum. SMBJ36CE3/TR13, 1SMB36CA TR13 PBFREE, SMBJ36CA-HR, and SMBJ36CA-HRA extend the minimum to -65°C, providing additional thermal margin for cold environment applications.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All recommended substitute parts are RoHS3 compliant with Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), matching the original part specifications.

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