SMAJ45A-M3/61 Equivalent & Substitute Parts

Part Overview

The SMAJ45A-M3/61 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 45V reverse standoff category with a 72.7V maximum clamping voltage and 5.5A 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 specifications, mechanical compatibility, and compliance certifications to ensure direct functional interchangeability in circuit designs.

Substiute Parts

SMAJ45A-M3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 976SMAJ45A-M3/61 Datasheet

Current PartRFQ

SMAJ45A-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 1486SMAJ45A-E3/61 Datasheet

DirectRFQ

SMAJ45A

MeritekIn Stock: 300376SMAJ45A Datasheet

DirectRFQ

SMAJ45A

MeritekIn Stock: 300376SMAJ45A Datasheet

DirectRFQ

SMAJ45A-13-F

Diodes IncorporatedIn Stock: 15348SMAJ45A-13-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ45A-M3/61 are qualified based on the following criteria:

Electrical Parameters (Critical for Substitution):

• Voltage - Reverse Standoff (Typ): 45V
• Voltage - Breakdown (Min): 50V
• Voltage - Clamping (Max) @ Ipp: 72.7V
• Current - Peak Pulse (10/1000µs): 5.5A
• Power - Peak Pulse: 400W

Mechanical Parameters (Required for Compatibility):

• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Compliance Parameters (Regulatory Requirement):

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

All identified substitute parts match these parameters exactly, ensuring functional and physical interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, confirming ongoing manufacturer support and regulatory alignment. Selection among equivalent parts should be based on:

Manufacturer Availability: SMAJ45A-E3/61 (Vishay) and SMAJ45A-13-F (Diodes Incorporated) represent direct manufacturer alternatives with established supply channels. SMAJ45A (Meritek) provides an alternative sourcing option from a different manufacturer.

Compliance Certification: All substitute parts carry identical RoHS3 compliance and MSL 1 (Unlimited) ratings, ensuring compatibility with standard manufacturing and storage requirements.

Electrical Performance: All parts deliver identical electrical specifications across voltage, current, and power parameters, confirming direct functional substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can SMAJ45A-E3/61 be used as a direct replacement for SMAJ45A-M3/61?

A: Yes. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications (45V reverse standoff, 72.7V clamping voltage, 5.5A peak pulse current), mechanical packaging (DO-214AC, SMA), and compliance certifications (ROHS3, MSL 1). The difference in part number suffix reflects internal Vishay packaging or tape configuration variants that do not affect electrical performance or circuit compatibility.

Q: Are the Meritek and Diodes Incorporated versions electrically equivalent?

A: Yes. SMAJ45A (Meritek) and SMAJ45A-13-F (Diodes Incorporated) match all critical electrical parameters: 45V reverse standoff voltage, 50V minimum breakdown voltage, 72.7V maximum clamping voltage, and 5.5A peak pulse current. Both are surface mount components in DO-214AC (SMA) packaging with ROHS3 compliance and Active product status.

Q: What determines whether a part can substitute for SMAJ45A-M3/61?

A: Substitution is determined by matching the following parameters: Voltage - Reverse Standoff (45V), Voltage - Breakdown (50V), Voltage - Clamping (72.7V), Current - Peak Pulse (5.5A), Power - Peak Pulse (400W), Package / Case (DO-214AC, SMA), Mounting Type (Surface Mount), and compliance certifications (ROHS3, MSL 1). All identified parts meet these criteria.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use identical DO-214AC (SMA) surface mount packaging and footprint, enabling direct PCB placement without layout modifications. Electrical specifications are matched across all parameters, confirming circuit-level interchangeability.

Q: What is the difference between SMAJ45A-M3/61 and SMAJ45A-E3/61?

A: Both parts are Vishay products with identical electrical and mechanical specifications. The suffix variation (M3 versus E3) indicates different tape and reel configurations or internal manufacturing codes that do not affect component performance or compatibility.