SMBJ64A-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ64A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 64V reverse standoff category and is designed for general-purpose transient voltage suppression applications. The part is Active status and ROHS3 compliant, making it suitable for current production environments. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the DO-214AA (SMB) package family.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	64	V
Voltage - Breakdown (Min)	71.7	V
Voltage - Clamping (Max) @ Ipp	103	V
Current - Peak Pulse (10/1000µs)	5.8	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	-
Package / Case	DO-214AA, SMB	-
Type	Zener	-
Unidirectional Channels	1	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ64A-M3/52 are grouped based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 64V
Voltage - Clamping (Max) @ Ipp: 103V ±1V tolerance
Current - Peak Pulse (10/1000µs): 5.8A ±0.1A tolerance
Power - Peak Pulse: 600W
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Type: Zener, Unidirectional (1 channel)
Operating Temperature: -55°C to 150°C minimum

Direct Equivalents maintain all electrical parameters within specified tolerances and are manufactured by Vishay or equivalent qualified manufacturers.

Functional Alternatives operate at different voltage ratings (70V, 75V standoff) but share the same package, mounting type, and general-purpose application category. These are suitable only when circuit design permits higher voltage suppression thresholds.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	RoHS Status
SMBJ64A-M3/52	Vishay	64V	103V	5.8A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3
SMBJ64D-M3/H	Vishay	64V	102V	5.88A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3
SMBJ64A-E3/52	Vishay	64V	103V	5.8A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3
SMBJ64A	Meritek	64V	103V	5.83A	600W	DO-214AA (SMB)	-55 to 150°C	ROHS3
SMBJ64A-13-F	Diodes Incorporated	64V	103V	5.8A	600W	DO-214AA, SMB	-55 to 150°C	ROHS3
SMBJ70A	MDD	70V	113V	5.3A	600W	DO-214AA, SMB	-50 to 150°C	ROHS3
SMBJ75A	Meritek	75V	121V	4.96A	600W	DO-214AA (SMB)	-55 to 150°C	ROHS3

Engineering Selection Recommendations

Direct Equivalents (Preferred for Pin-for-Pin Replacement):

SMBJ64A-E3/52 (Vishay) and SMBJ64A-13-F (Diodes Incorporated) are direct electrical and mechanical equivalents. Both maintain 64V reverse standoff, 103V clamping voltage, and 5.8A peak pulse current. All three manufacturers (Vishay, Diodes Incorporated, Meritek) provide ROHS3 compliance and MSL 1 rating. Selection among these parts is based on inventory availability and lead time requirements.

SMBJ64D-M3/H (Vishay) is a near-equivalent variant with 102V clamping voltage (1V lower than the main part) and marginally higher peak pulse current (5.88A). This part is suitable for applications where the 1V reduction in clamping voltage is acceptable.

Functional Alternatives (Voltage Rating Variants):

SMBJ70A (MDD) and SMBJ75A (Meritek) operate at higher reverse standoff voltages (70V and 75V respectively) with correspondingly higher clamping voltages (113V and 121V). These parts are suitable only when circuit design permits higher transient voltage suppression thresholds. The SMBJ70A exhibits slightly lower peak pulse current (5.3A) compared to the main part. Both maintain the same package, mounting type, and compliance certifications.

All substitute parts are Active status products with ROHS3 compliance and MSL 1 rating, confirming suitability for current production use.

Frequently Asked Questions (FAQ)

Q: Can SMBJ64D-M3/H be used as a direct replacement for SMBJ64A-M3/52?

A: Yes. Both parts share identical 64V reverse standoff voltage and 600W peak pulse power rating. The clamping voltage difference (102V vs 103V) is within typical application tolerance for general-purpose transient suppression. Peak pulse current is marginally higher (5.88A vs 5.8A), which does not create compatibility issues.

Q: What is the difference between SMBJ64A-E3/52 and SMBJ64A-M3/52?

A: Both are Vishay SMBJ64A variants with identical electrical specifications: 64V reverse standoff, 103V clamping voltage, and 5.8A peak pulse current. The suffix designations (E3/52 vs M3/52) indicate different packaging or tape configurations. Electrical performance and mechanical compatibility are equivalent.

Q: Can SMBJ70A or SMBJ75A replace SMBJ64A-M3/52 in my circuit?

A: Only if your circuit design permits higher transient voltage suppression thresholds. SMBJ70A clamps at 113V (10V higher) and SMBJ75A clamps at 121V (18V higher) compared to the main part's 103V. These higher voltage ratings may not provide adequate protection for circuits designed around 64V standoff suppression. Verify circuit requirements before substitution.

Q: Are all substitute parts available in the same DO-214AA (SMB) package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility. Mounting type is surface mount for all variants.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. REACH status is Unaffected for all parts. These certifications match the main part's compliance profile.

Q: Which substitute part has the highest inventory availability?

A: SMBJ64A-E3/52 (Vishay) has the highest inventory at 45,400 pieces. SMBJ64A (Meritek) has 23,100 pieces available. Inventory levels should be verified with current supplier data for procurement planning.

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