SMBJ75-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ75-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage protection in surface-mount applications using the DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMBJ75-E3/52
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	75V
Voltage - Breakdown (Min)	83.3V
Voltage - Clamping (Max) @ Ipp	134V
Current - Peak Pulse (10/1000µs)	4.5A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SMBJ75-E3/52 is determined by the following critical parameters:

Reverse Standoff Voltage (Typ): 75V
Breakdown Voltage (Min): 83.3V
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Unidirectional Channels: 1
Type: Zener
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must maintain the same reverse standoff voltage, breakdown voltage range, and physical package to ensure direct compatibility. Variations in clamping voltage and peak pulse current are acceptable within the SMBJ75 series, as these parameters remain within the same functional class for general-purpose transient voltage suppression.

Parameter Comparison

Parameter	SMBJ75-E3/52 (Main)	SMBJ75A-E3/52	SMBJ75E3/TR13	SMBJ75A (Meritek)	SMBJ75A-13-F
Manufacturer	Vishay	Vishay	Microchip Technology	Meritek	Diodes Incorporated
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Reverse Standoff (Typ)	75V	75V	75V	75V	75V
Voltage - Breakdown (Min)	83.3V	83.3V	83.3V	83.3V	83.3V
Voltage - Clamping (Max) @ Ipp	134V	121V	134V	121V	121V
Current - Peak Pulse (10/1000µs)	4.5A	5A	4.5A	4.96A	4.9A
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA (SMB)	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and storage requirements. The following selection criteria apply:

SMBJ75A-E3/52 (Vishay): Direct manufacturer alternative from Vishay with active product status. Maintains identical reverse standoff and breakdown voltages. Clamping voltage reduced to 121V with increased peak pulse current to 5A. Suitable for applications where lower clamping voltage is acceptable.

SMBJ75E3/TR13 (Microchip Technology): Exact electrical match to the original part with 134V clamping voltage and 4.5A peak pulse current. Extended operating temperature range to -65°C provides additional thermal margin. Active product status with tape and reel packaging.

SMBJ75A (Meritek): Active alternative with 121V clamping voltage and 4.96A peak pulse current. Maintains standard operating temperature range of -55°C to 150°C. Highest inventory availability among substitutes.

SMBJ75A-13-F (Diodes Incorporated): Active substitute with 121V clamping voltage and 4.9A peak pulse current. Supplied in tape and reel packaging. Highest inventory stock level among all alternatives.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75A variants be used as direct replacements for SMBJ75-E3/52?

A: SMBJ75A variants are functionally compatible substitutes. They maintain the same 75V reverse standoff voltage, 83.3V minimum breakdown voltage, and DO-214AA package. The primary difference is reduced clamping voltage (121V vs. 134V) and increased peak pulse current (approximately 5A vs. 4.5A). Selection depends on circuit requirements for clamping voltage tolerance.

Q: What is the difference between SMBJ75E3/TR13 and other SMBJ75A substitutes?

A: SMBJ75E3/TR13 maintains the original 134V clamping voltage and 4.5A peak pulse current specifications, providing an electrical match to SMBJ75-E3/52. Other SMBJ75A variants use 121V clamping voltage with slightly higher peak pulse current. SMBJ75E3/TR13 also offers an extended operating temperature range to -65°C.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical compatibility. SMBJ75A-E3/52, SMBJ75E3/TR13, and SMBJ75A-13-F are available in tape and reel (TR) packaging for automated assembly. SMBJ75A (Meritek) packaging format is not specified but maintains the same physical case.

Q: Do all substitutes meet the same compliance standards?

A: All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ75-E3/52 specifications. This ensures compatibility with current manufacturing processes and storage requirements.

Q: Which substitute offers the best inventory availability?

A: SMBJ75A-13-F (Diodes Incorporated) has the highest inventory stock at 29,446 pieces. SMBJ75A (Meritek) offers 4,335 pieces. SMBJ75A-E3/52 (Vishay) has 3,100 pieces, and SMBJ75E3/TR13 (Microchip) has 979 pieces available.

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