SMAJ48A-M3/61 Equivalent & Substitute Parts

Part Overview

The SMAJ48A-M3/61 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 48V reverse standoff category and is designed for general-purpose transient voltage protection applications. The part is Active status and RoHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the DO-214AC (SMA) package form factor.

Substiute Parts

SMAJ48A-M3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 1168SMAJ48A-M3/61 Datasheet

Current PartRFQ

SMAJ48A-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 214171SMAJ48A-E3/61 Datasheet

DirectRFQ

SMAJ48A

MDDIn Stock: 202171SMAJ48A Datasheet

DirectRFQ

SMAJ48A-13-F

Diodes IncorporatedIn Stock: 4290SMAJ48A-13-F Datasheet

DirectRFQ

SMAJ48A-TP

Micro Commercial CoIn Stock: 5986SMAJ48A-TP Datasheet

DirectRFQ

SMA6J48A-TR

STMicroelectronicsIn Stock: 30409SMA6J48A-TR Datasheet

MFR RecommendedRFQ

SMA6T56AY

STMicroelectronicsIn Stock: 3016SMA6T56AY Datasheet

MFR RecommendedRFQ

SMAJ48A-TR

STMicroelectronicsIn Stock: 2557SMAJ48A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ48A-M3/61 are categorized based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 48V
• Voltage - Breakdown (Min): 53.3V
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional
• RoHS Status: ROHS3 Compliant

Direct Equivalents maintain identical clamping voltage (77.4V @ Ipp) and peak pulse current (5.2A) specifications. These parts are interchangeable without circuit redesign.

Manufacturer Recommended Alternatives provide enhanced performance characteristics (higher clamping voltage or peak pulse current) while maintaining the same reverse standoff voltage and package compatibility. These parts offer improved transient suppression capability within the same form factor.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical Performance):

• SMAJ48A-E3/61 (Vishay): Identical specifications to SMAJ48A-M3/61. Highest inventory availability (214,100 pcs). Recommended for direct replacement.
• SMAJ48A-13-F (Diodes Incorporated): Matches all critical parameters. Active product status with REACH compliance.
• SMAJ48A-TP (Micro Commercial Co): Identical electrical specifications with extended operating temperature range (-55 to 175°C TA). Active product status.
• SMAJ48A (MDD): Matches electrical specifications with slightly reduced lower temperature limit (-50°C vs -55°C).

Enhanced Performance Alternatives:

• SMAJ48A-TR (STMicroelectronics): Maintains 48V reverse standoff with increased clamping voltage (100V) and peak pulse current (23A @ 8/20µs). Suitable for applications requiring higher transient suppression capability.
• SMA6J48A-TR (STMicroelectronics): Maintains 48V reverse standoff with significantly enhanced performance (88.4V clamping, 40A peak pulse @ 8/20µs, 600W power rating). Extended temperature range (-55 to 175°C).
• SMA6T56AY (STMicroelectronics): Automotive-grade alternative (AEC-Q101 qualified) with 47.6V reverse standoff, 100V clamping, and 40A peak pulse capability. Suitable for automotive transient protection applications.

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and DO-214AC (SMA) package compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMAJ48A-E3/61 be used as a direct replacement for SMAJ48A-M3/61? A: Yes. Both parts share identical electrical specifications (48V reverse standoff, 77.4V clamping, 5.2A peak pulse) and package form factor (DO-214AC, SMA). The primary difference is packaging designation (E3/61 vs M3/61 tape reel configuration).

Q: What is the difference between direct equivalents and manufacturer recommended alternatives? A: Direct equivalents (SMAJ48A-E3/61, SMAJ48A-13-F, SMAJ48A-TP, SMAJ48A) provide identical electrical performance and are interchangeable without circuit modification. Manufacturer recommended alternatives (SMA6J48A-TR, SMA6T56AY, SMAJ48A-TR) offer enhanced transient suppression capability (higher clamping voltage and/or peak pulse current) while maintaining the same reverse standoff voltage and package compatibility.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting modern electronic assembly requirements.

Q: Can SMA6T56AY be used in place of SMAJ48A-M3/61? A: SMA6T56AY is functionally compatible but operates at a slightly lower reverse standoff voltage (47.6V vs 48V). It provides enhanced transient suppression (100V clamping, 40A peak pulse) and includes automotive-grade qualification (AEC-Q101). Circuit validation is required to confirm suitability for the specific application.

Q: What is the operating temperature difference between SMAJ48A-TP and SMAJ48A-M3/61? A: SMAJ48A-TP extends the upper operating temperature limit to 175°C (TA) compared to 150°C (TJ) for SMAJ48A-M3/61. This extended range may be beneficial for high-temperature applications, but thermal management design should be verified.

Q: Are all substitute parts available in the same tape and reel packaging? A: Most substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® packaging. Verify specific packaging requirements with your procurement process, as packaging designation may affect lead times and handling procedures.