SMBJ85CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ85CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 85V reverse standoff category with a 137V maximum clamping voltage and 4.4A peak pulse current rating. The part is classified as Active product status and is designed for general-purpose transient voltage suppression applications. Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and manufacturing specifications to ensure functional interchangeability in circuit designs.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	85	V
Voltage - Breakdown (Min)	94.4	V
Voltage - Clamping (Max) @ Ipp	137	V
Current - Peak Pulse (10/1000µs)	4.4	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ85CA-M3/52 are qualified based on the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 85V
Voltage - Breakdown (Min): 94.4V minimum
Voltage - Clamping (Max) @ Ipp: 135V to 137V range
Current - Peak Pulse (10/1000µs): 4.38A to 4.46A range
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
Operating Temperature: -55°C minimum to 150°C or higher maximum
RoHS Status: ROHS3 Compliant

Parts meeting these criteria are functionally equivalent for circuit substitution. Packaging format (Tape & Reel, Cut Tape) does not affect electrical performance and represents a supply chain variable only.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown Min (V)	Voltage - Clamping Max @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temp (°C)	Package	RoHS Status
SMBJ85CA-M3/52	Vishay General Semiconductor	85	94.4	137	4.4	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant
SMBJ85CD-M3/H	Vishay General Semiconductor	85	95.7	135	4.46	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant
SMBJ85CA-E3/52	Vishay General Semiconductor	85	94.4	137	4.4	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant
SMBJ85CA-13-F	Diodes Incorporated	85	94.4	137	4.4	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant
SMBJ85CA-TP	Micro Commercial Co	85	94.4	137	4.4	600	-55 to 175	DO-214AA, SMB	ROHS3 Compliant
SMBJ85CA	Meritek	85	94.4	137	4.38	600	-55 to 150	DO-214AA, SMB	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed are Active product status components with ROHS3 compliance and REACH unaffected status, matching the regulatory and compliance profile of the SMBJ85CA-M3/52.

SMBJ85CA-E3/52 (Vishay, Cut Tape packaging) and SMBJ85CA-M3/52 (Vishay, Tape & Reel packaging) are electrically identical with identical voltage and current specifications. Selection between these depends on procurement and assembly requirements.

SMBJ85CD-M3/H (Vishay) exhibits a 2V lower clamping voltage (135V vs 137V) and marginally higher peak pulse current (4.46A vs 4.4A), remaining within functional equivalence for the 85V standoff category.

SMBJ85CA-13-F (Diodes Incorporated) provides identical electrical specifications to the main part with SMB package designation, offering cross-manufacturer compatibility.

SMBJ85CA-TP (Micro Commercial Co) matches electrical specifications and extends the upper operating temperature to 175°C, providing enhanced thermal performance for high-temperature applications.

SMBJ85CA (Meritek) delivers equivalent performance with peak pulse current of 4.38A, within the acceptable tolerance band for this device category.

Frequently Asked Questions (FAQ)

Q: Can SMBJ85CD-M3/H be used as a direct replacement for SMBJ85CA-M3/52?

A: Yes. Both parts share identical reverse standoff voltage (85V), breakdown voltage (94.4V minimum), power rating (600W), operating temperature range (-55°C to 150°C), and package format (DO-214AA, SMB). The clamping voltage difference of 2V (137V vs 135V) and peak pulse current variation (4.4A vs 4.46A) fall within acceptable substitution parameters for general-purpose TVS applications.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel and Cut Tape represent supply chain packaging formats only. Both formats contain identical components in the same DO-214AA package. Selection depends on assembly equipment compatibility and procurement volume requirements. Electrical performance is unaffected by packaging format.

Q: Is SMBJ85CA-TP suitable for applications requiring higher operating temperatures?

A: Yes. SMBJ85CA-TP extends the maximum operating temperature to 175°C compared to 150°C for the main part, while maintaining identical electrical specifications. This part is appropriate for high-temperature circuit environments.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status and REACH Unaffected designation, matching the regulatory compliance of SMBJ85CA-M3/52.

Q: Can I substitute a part from a different manufacturer?

A: Yes. SMBJ85CA-13-F (Diodes Incorporated) and SMBJ85CA-TP (Micro Commercial Co) are cross-manufacturer equivalents meeting identical electrical and package specifications. SMBJ85CA (Meritek) also qualifies as a functional substitute. All maintain the same DO-214AA/SMB package and electrical performance band.

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