SMAJ6.5A-E3/5A Equivalent & Substitute Parts

Part Overview

The SMAJ6.5A-E3/5A is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AC (SMA) package and provides transient overvoltage protection for general-purpose applications. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when electrical characteristics and mechanical compatibility align with the main part specifications, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

SMAJ6.5A-E3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 982SMAJ6.5A-E3/5A Datasheet

Current PartRFQ

SMAJ6.5A-13-F

Diodes IncorporatedIn Stock: 30912SMAJ6.5A-13-F Datasheet

DirectRFQ

SMAJ6.5A-TP

Micro Commercial CoIn Stock: 9931SMAJ6.5A-TP Datasheet

DirectRFQ

PTVS6V5S1UR,115

Nexperia USA Inc.In Stock: 18816PTVS6V5S1UR,115 Datasheet

MFR RecommendedRFQ

SMA6J6.5A-TR

STMicroelectronicsIn Stock: 10208SMA6J6.5A-TR Datasheet

MFR RecommendedRFQ

SMAJ6.5A

MDDIn Stock: 8265SMAJ6.5A Datasheet

MFR RecommendedRFQ

SMAJ6.5A

MDDIn Stock: 8265SMAJ6.5A Datasheet

MFR RecommendedRFQ

SMAJ6.5A-TR

STMicroelectronicsIn Stock: 1582SMAJ6.5A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ6.5A-E3/5A are classified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 6.5V
• Voltage - Breakdown (Min): 7.22V minimum
• Voltage - Clamping (Max) @ Ipp: 11.2V maximum
• Current - Peak Pulse (10/1000µs): 35.7A minimum
• Power - Peak Pulse: 400W minimum
• Package / Case: DO-214AC or SMA compatible
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Grouping Logic:

Group 1 - Direct Electrical & Package Equivalents: Parts matching all primary criteria with identical clamping voltage (11.2V) and peak pulse current (35.7A) in DO-214AC/SMA packages.

Group 2 - Enhanced Performance Variants: Parts with identical standoff and breakdown voltages but higher clamping voltage or peak pulse current ratings, suitable for applications requiring additional margin.

Group 3 - Alternative Package Formats: Parts with matching electrical specifications but different surface mount packages (SOD-123W), applicable when board layout permits package substitution.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Group 1): SMAJ6.5A-13-F (Diodes Incorporated), SMAJ6.5A-TP (Micro Commercial Co), and SMAJ6.5A (MDD) provide electrical and mechanical equivalence to the main part. All three maintain identical clamping voltage (11.2V), peak pulse current (35.7A), and power dissipation (400W) specifications. All are active production parts with ROHS3 compliance. SMAJ6.5A-TP offers extended operating temperature range to 175°C, providing thermal margin for high-temperature environments.

Enhanced Performance Variant (Group 2): SMA6J6.5A-TR (STMicroelectronics) maintains the 6.5V standoff voltage but provides higher clamping voltage (14.5V) and significantly elevated peak pulse current capability (276A at 8/20µs pulse or 160A at 10/1000µs). This part is suitable for applications requiring additional transient energy absorption capacity. Extended temperature rating to 175°C is available. The TRANSIL™ series designation indicates optimized transient suppression performance.

Alternative Package Format (Group 3): PTVS6V5S1UR,115 (Nexperia USA Inc.) matches electrical specifications but uses SOD-123W package instead of DO-214AC/SMA. This part carries AEC-Q101 automotive qualification and is suitable for applications requiring automotive-grade components. Package substitution requires board layout verification for mechanical fit.

All substitute parts maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can SMAJ6.5A-13-F directly replace SMAJ6.5A-E3/5A? A: Yes. Both parts share identical electrical specifications: 6.5V standoff voltage, 7.22V breakdown voltage, 11.2V clamping voltage, and 35.7A peak pulse current. Both use DO-214AC/SMA packages and are ROHS3 compliant. Direct substitution is supported.

Q: What is the difference between SMAJ6.5A-TP and the main part? A: SMAJ6.5A-TP is electrically identical but offers extended operating temperature range (-55 to 175°C versus -55 to 150°C). This provides thermal margin for high-temperature applications. All other specifications remain equivalent.

Q: Why does SMA6J6.5A-TR have higher peak pulse current? A: SMA6J6.5A-TR is rated for 276A peak pulse current (8/20µs) compared to 35.7A (10/1000µs) in the main part. These represent different pulse waveforms and measurement standards. The higher rating reflects enhanced transient suppression capability suitable for applications with severe transient events. Clamping voltage is also higher at 14.5V, providing additional voltage margin.

Q: Can PTVS6V5S1UR,115 be used as a substitute despite different packaging? A: PTVS6V5S1UR,115 matches all electrical specifications but uses SOD-123W package instead of DO-214AC/SMA. Substitution is possible only if board layout accommodates the different package footprint. This part includes AEC-Q101 automotive qualification, making it suitable for automotive applications.

Q: Are all substitute parts in active production? A: Yes. All listed substitute parts maintain active production status with full inventory availability. All are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity rating.

Q: What is the temperature range consideration for SMAJ6.5A (MDD)? A: SMAJ6.5A from MDD operates from -50 to 150°C, which is slightly narrower at the lower temperature limit compared to the main part (-55°C). For applications requiring full -55°C operation, verify thermal requirements before substitution.