SMBJ7.5A-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ7.5A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 7.5V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is Active status and RoHS3 compliant, making it suitable for modern electronic assemblies requiring ESD and surge protection. 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)	7.5	V
Voltage - Breakdown (Min)	8.33	V
Voltage - Clamping (Max) @ Ipp	12.9	V
Current - Peak Pulse (10/1000µs)	46.5	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	—

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ7.5A-M3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 7.5V
Voltage - Clamping (Max) @ Ipp: 12.9V maximum
Current - Peak Pulse (10/1000µs): 46.5A minimum
Power - Peak Pulse: 600W minimum
Package / Case: DO-214AA or SMB compatible
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts must maintain electrical equivalence within these parameters. Variations in clamping voltage (within the specified maximum) and peak pulse current (at or above the specified minimum) are acceptable provided all other mechanical and compliance requirements are met.

Parameter Comparison

Parameter	SMBJ7.5A-M3/52 (Main)	SMBJ7.5D-M3/H	SMBJ7.5A-E3/52	1SMB7.5A TR13 PBFREE	SMBJ7.5A-13-F
Manufacturer	Vishay	Vishay	Vishay	Central Semiconductor	Diodes Incorporated
Voltage - Reverse Standoff (Typ)	7.5V	7.5V	7.5V	7.5V	7.5V
Voltage - Breakdown (Min)	8.33V	8.46V	8.33V	8.33V	8.33V
Voltage - Clamping (Max) @ Ipp	12.9V	12.7V	12.9V	12.9V	12.9V
Current - Peak Pulse (10/1000µs)	46.5A	47.2A	46.5A	46.5A	46.5A
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-55 to 150°C	-65 to 150°C	-55 to 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
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the main part SMBJ7.5A-M3/52. Selection among equivalent parts should be based on:

Electrical parameter tolerance: SMBJ7.5D-M3/H exhibits a lower clamping voltage (12.7V) and higher peak pulse current (47.2A), providing tighter voltage regulation. SMBJ7.5A-E3/52 is electrically identical to the main part. SMBJ7.5A-13-F and 1SMB7.5A TR13 PBFREE match the main part specifications.
Temperature range: 1SMB7.5A TR13 PBFREE extends the lower operating temperature to -65°C, suitable for applications requiring enhanced cold-temperature performance.
Manufacturer availability and supply chain considerations: Diodes Incorporated (SMBJ7.5A-13-F) and Central Semiconductor (1SMB7.5A TR13 PBFREE) provide alternative sourcing options to Vishay products.
Packaging and tape configuration: All parts are supplied in Tape & Reel format compatible with automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.5D-M3/H be used as a direct replacement for SMBJ7.5A-M3/52?

A: Yes. Both parts share identical reverse standoff voltage (7.5V), power rating (600W), and package (DO-214AA, SMB). The SMBJ7.5D-M3/H exhibits a marginally lower clamping voltage (12.7V vs. 12.9V) and higher peak pulse current (47.2A vs. 46.5A), making it electrically compatible for general-purpose transient protection applications.

Q: What is the difference between SMBJ7.5A-E3/52 and SMBJ7.5A-M3/52?

A: SMBJ7.5A-E3/52 is electrically and mechanically identical to SMBJ7.5A-M3/52. Both are manufactured by Vishay and share the same electrical specifications, package, and compliance certifications. The difference lies in tape configuration and supplier designation.

Q: Is 1SMB7.5A TR13 PBFREE suitable for low-temperature applications?

A: Yes. The 1SMB7.5A TR13 PBFREE operates from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the main part (-55°C to 150°C). This makes it suitable for applications requiring enhanced cold-temperature performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry RoHS3 compliance certification, matching the regulatory status of the main part SMBJ7.5A-M3/52.

Q: Can I mix manufacturers in the same assembly?

A: Yes. All substitute parts are electrically and mechanically equivalent within the specified parameter tolerances. Mixing manufacturers (Vishay, Central Semiconductor, Diodes Incorporated) in the same assembly is permissible from an engineering standpoint, provided design and procurement specifications allow multi-source qualification.

Q: What is the significance of the "PBFREE" designation in 1SMB7.5A TR13 PBFREE?

A: PBFREE indicates lead-free construction, confirming RoHS3 compliance. All parts listed are lead-free and RoHS3 compliant.

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