SMAJ7.5A-13 Equivalent & Substitute Parts

Part Overview

The SMAJ7.5A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in DO-214AC (SMA) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 7.5V reverse standoff voltage and 12.9V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

SMAJ7.5A-13

Diodes IncorporatedIn Stock: 910SMAJ7.5A-13 Datasheet

Current PartRFQ

SMAJ7.5A-13-F

Diodes IncorporatedIn Stock: 2285SMAJ7.5A-13-F Datasheet

DirectRFQ

SMAJ7.5A-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 36131SMAJ7.5A-E3/61 Datasheet

DirectRFQ

SMAJ7.5A-TP

Micro Commercial CoIn Stock: 5836SMAJ7.5A-TP Datasheet

DirectRFQ

PTVS7V5S1UR,115

Nexperia USA Inc.In Stock: 18718PTVS7V5S1UR,115 Datasheet

MFR RecommendedRFQ

SMAJ7.5A

MeritekIn Stock: 2027SMAJ7.5A Datasheet

MFR RecommendedRFQ

SMAJ7.5A

MeritekIn Stock: 2027SMAJ7.5A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ7.5A-13 are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 7.5V
• Voltage - Breakdown (Min): 8.33V
• Voltage - Clamping (Max) @ Ipp: 12.9V
• Current - Peak Pulse (10/1000µs): 31A (±0.01A tolerance acceptable)
• Power - Peak Pulse: 400W
• Type: Zener, Unidirectional (1 channel)

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package / Case: DO-214AC (SMA) or SOD-123W (alternative package with equivalent footprint considerations)
• Operating Temperature Range: -55°C minimum to 150°C minimum

Compliance Criteria:

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

All substitute parts listed maintain identical electrical performance specifications and are suitable for direct replacement in applications where the SMAJ7.5A-13 was originally specified.

Parameter Comparison

Engineering Selection Recommendations

Direct Package Replacement (DO-214AC/SMA):

SMAJ7.5A-13-F (Diodes Incorporated) is the primary substitute, offering identical electrical specifications and package form factor with active product status and ROHS3 compliance. This part represents a direct upgrade from the discontinued SMAJ7.5A-13.

SMAJ7.5A-E3/61 (Vishay General Semiconductor - Diodes Division) provides equivalent electrical performance in the same package with active status and ROHS3 compliance. The TransZorb® series designation indicates established reliability in transient suppression applications.

SMAJ7.5A-TP (Micro Commercial Co) maintains electrical equivalence with extended operating temperature range to 175°C and active product status with ROHS3 compliance.

SMAJ7.5A (Meritek) offers electrical equivalence with peak pulse current of 31.01A and active product status with ROHS3 compliance.

Alternative Package Option (SOD-123W):

PTVS7V5S1UR,115 (Nexperia USA Inc.) provides electrical equivalence in SOD-123W package with AEC-Q101 automotive qualification and active product status. This part requires PCB layout modification due to different package footprint but maintains all electrical performance parameters.

All substitute parts listed are ROHS3 compliant and suitable for new design implementations where the original SMAJ7.5A-13 specification is required.

Frequently Asked Questions (FAQ)

Q: Can SMAJ7.5A-13-F be used as a direct replacement for SMAJ7.5A-13?

A: Yes. SMAJ7.5A-13-F is electrically and mechanically identical to SMAJ7.5A-13, with the same DO-214AC (SMA) package, identical voltage and current ratings, and equivalent operating temperature range. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between DO-214AC and SOD-123W packages?

A: DO-214AC (SMA) and SOD-123W are both surface mount packages for TVS diodes but have different physical footprints. DO-214AC is larger and more commonly used for higher power applications. SOD-123W is a smaller package. PTVS7V5S1UR,115 in SOD-123W package requires PCB layout modification but maintains identical electrical performance.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (SMAJ7.5A-13-F, SMAJ7.5A-E3/61, SMAJ7.5A-TP, PTVS7V5S1UR,115, and SMAJ7.5A) are ROHS3 compliant. The original SMAJ7.5A-13 is RoHS non-compliant.

Q: Which substitute part has the widest operating temperature range?

A: SMAJ7.5A-TP (Micro Commercial Co) has an operating temperature range of -55°C to 175°C, compared to -55°C to 150°C for other substitutes.

Q: Is PTVS7V5S1UR,115 suitable for automotive applications?

A: Yes. PTVS7V5S1UR,115 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. Other substitutes do not carry automotive qualification designations.

Q: What packaging formats are available for the substitute parts?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) formats. SMAJ7.5A-13-F and SMAJ7.5A-TP are supplied in Tape & Reel. SMAJ7.5A-E3/61 is available in Cut Tape. PTVS7V5S1UR,115 and SMAJ7.5A are supplied in Tape & Reel.

Q: Can I use SMAJ7.5A (Meritek) as a substitute?

A: Yes. SMAJ7.5A (Meritek) is electrically equivalent with peak pulse current of 31.01A (within tolerance of the 31A specification), identical voltage ratings, and active product status with ROHS3 compliance.