SMAJ7.0A-M3/5A Equivalent & Substitute Parts

Part Overview

The SMAJ7.0A-M3/5A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 7V reverse standoff voltage class and provides transient protection for general-purpose applications. The part is actively produced and RoHS3 compliant, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical parameters, mechanical compatibility, and regulatory compliance align with the original specification.

Substiute Parts

SMAJ7.0A-M3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 940SMAJ7.0A-M3/5A Datasheet

Current PartRFQ

SMAJ7.0A

MDDIn Stock: 105278SMAJ7.0A Datasheet

DirectRFQ

SMAJ7.0A-13-F

Diodes IncorporatedIn Stock: 15430SMAJ7.0A-13-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ7.0A-M3/5A are qualified based on the following criteria:

Electrical Parameters (Critical):

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 33.3A
• Power - Peak Pulse: 400W

Mechanical Parameters (Critical):

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

Regulatory & Compliance Parameters:

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

All identified substitute parts match these parameters exactly, ensuring direct functional and mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SMAJ7.0A-M3/5A (Vishay), SMAJ7.0A (MDD), and SMAJ7.0A-13-F (Diodes Incorporated)—are active products with identical electrical and mechanical specifications. Selection among these parts may be based on:

Availability: SMAJ7.0A (MDD) offers the highest inventory at 105,200 pieces. SMAJ7.0A-13-F (Diodes Incorporated) provides 15,400 pieces. SMAJ7.0A-M3/5A (Vishay) has 856 pieces in stock.

Regulatory Compliance: All parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating, meeting standard industrial requirements.

Temperature Range: SMAJ7.0A-M3/5A and SMAJ7.0A-13-F support -55 to 150°C operating range. SMAJ7.0A (MDD) operates from -50 to 150°C, which is acceptable for most general-purpose applications but represents a 5°C reduction at the lower temperature extreme.

Frequently Asked Questions (FAQ)

Q: Can SMAJ7.0A (MDD) replace SMAJ7.0A-M3/5A in all applications?

A: Yes, for applications operating above -50°C. The electrical parameters, package, and compliance certifications are identical. The operating temperature range difference (-50°C vs. -55°C minimum) is the only distinction.

Q: Are SMAJ7.0A-13-F and SMAJ7.0A-M3/5A mechanically interchangeable?

A: Yes. Both use DO-214AC (SMA) surface mount packaging with identical pin configurations and footprints. They are direct mechanical and electrical substitutes.

Q: What determines if a part can substitute for SMAJ7.0A-M3/5A?

A: Substitution requires matching all critical parameters: 7V reverse standoff voltage, 7.78V minimum breakdown voltage, 12V maximum clamping voltage, 33.3A peak pulse current, 400W peak pulse power, DO-214AC/SMA package, surface mount configuration, and single unidirectional channel. Regulatory compliance (RoHS3, REACH unaffected, MSL 1) must also align.

Q: Does the manufacturer affect performance in this application?

A: No. All three manufacturers produce parts meeting identical electrical and mechanical specifications for the 7V TVS diode class. Performance in general-purpose transient protection applications is equivalent.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All three parts share the same DO-214AC (SMA) package footprint and surface mount configuration, allowing direct substitution without PCB redesign.