SMBJ75CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ75CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface-mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	75	V
Voltage - Breakdown (Min)	83.3	V
Voltage - Clamping (Max) @ Ipp	121	V
Current - Peak Pulse (10/1000µs)	5	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ75CA-M3/52 are qualified based on the following criteria:

Electrical Parameters (Critical for Substitution):

Voltage - Reverse Standoff (Typ): 75V
Voltage - Breakdown (Min): 83.3V minimum
Voltage - Clamping (Max) @ Ipp: 121V maximum
Current - Peak Pulse (10/1000µs): 5A minimum
Power - Peak Pulse: 600W

Mechanical Parameters (Required for Compatibility):

Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1

Compliance & Environmental:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Product Status: Active

Parts meeting all these criteria are classified as direct substitutes. Variations in clamping voltage (within the specified maximum) or peak pulse current (at or above the specified minimum) remain functionally equivalent for general-purpose transient suppression applications.

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	Inventory (Pcs)
SMBJ75CA-M3/52	Vishay	75	83.3	121	5	600	-55 to 150	DO-214AA	848
SMBJ75CA-E3/5B	Vishay	75	83.3	121	5	600	-55 to 150	DO-214AA	6798
SMBJ75CA-E3/52	Vishay	75	83.3	121	5	600	-55 to 150	DO-214AA	16070
SMBJ75CD-M3/H	Vishay	75	84.6	119	5.06	600	-55 to 150	DO-214AA	4429
SMBJ75CA	MDD	75	83.3	121	5.3	600	-50 to 150	DO-214AA	45300

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, meeting regulatory requirements for current applications. Selection among substitutes should be based on:

Vishay TransZorb® Series (SMBJ75CA-E3/5B, SMBJ75CA-E3/52, SMBJ75CD-M3/H): These parts share identical manufacturer lineage and series designation with the main part. SMBJ75CA-E3/52 offers the highest inventory availability (16,070 pcs) among Vishay options while maintaining identical electrical specifications to the main part. SMBJ75CD-M3/H exhibits slightly tighter clamping voltage (119V vs 121V) and marginally higher peak pulse current (5.06A vs 5A), remaining within functional equivalence for general-purpose applications.

MDD SMBJ75CA: This alternative from MDD provides the highest inventory level (45,300 pcs) and maintains all critical electrical parameters. The operating temperature range extends to -50°C minimum (versus -55°C for Vishay parts), which is acceptable for most industrial and commercial applications. Peak pulse current specification is 5.3A, exceeding the minimum requirement.

All parts are MSL 1 (Unlimited) rated and suitable for standard PCB assembly processes without moisture precautions.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75CA-E3/52 directly replace SMBJ75CA-M3/52?

A: Yes. Both parts are manufactured by Vishay, share identical electrical specifications (75V standoff, 121V clamping, 5A peak pulse), operate across -55°C to 150°C, and use the DO-214AA package. The suffix variation (E3/52 vs M3/52) indicates different tape reel configurations but does not affect electrical performance or mechanical compatibility.

Q: Is SMBJ75CD-M3/H compatible with SMBJ75CA-M3/52?

A: Yes, with minor parameter variance. SMBJ75CD-M3/H maintains the 75V standoff voltage and 600W peak pulse power. Clamping voltage is 119V (versus 121V) and peak pulse current is 5.06A (versus 5A). These variations remain within acceptable tolerance for general-purpose transient suppression and do not compromise functional equivalence.

Q: What is the difference between Vishay and MDD SMBJ75CA parts?

A: Both manufacturers produce SMBJ75CA devices with identical electrical ratings (75V standoff, 121V clamping, 5A peak pulse) in DO-214AA packages. The MDD variant specifies a -50°C to 150°C operating range (versus -55°C to 150°C for Vishay). For applications not requiring sub-50°C operation, the MDD part is fully compatible. MDD inventory availability is significantly higher (45,300 pcs).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status and MSL 1 (Unlimited) moisture sensitivity rating, meeting current regulatory requirements and standard PCB assembly specifications.

Q: Does package designation affect substitution?

A: No. All parts use DO-214AA (SMB) surface-mount packaging. This standardized package ensures mechanical and thermal compatibility across all listed substitutes. Tape reel configuration suffixes (such as /52, /5B, /H) relate to packaging format for automated assembly but do not affect electrical or mechanical performance.

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