P4SMA12A-E3/5A Equivalent & Substitute Parts

Part Overview

The P4SMA12A-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 is designed for general-purpose transient voltage suppression applications. The device is currently in active production status. Equivalent and substitute parts may be required due to supply chain availability, specific application requirements, or design optimization needs while maintaining electrical and mechanical compatibility.

Substiute Parts

P4SMA12A-E3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1163P4SMA12A-E3/5A Datasheet

Current PartRFQ

PTVS13VS1UR,115

Nexperia USA Inc.In Stock: 24247PTVS13VS1UR,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): Determines the normal operating voltage threshold
• Voltage - Clamping (Max) @ Ipp: Defines maximum transient voltage protection level
• Current - Peak Pulse (10/1000µs): Specifies surge current handling capability
• Power - Peak Pulse: Indicates energy dissipation capacity
• Package / Case: Ensures mechanical and thermal compatibility
• Operating Temperature Range: Confirms suitability for target environment
• RoHS and compliance status: Validates regulatory requirements

The PTVS13VS1UR,115 is identified as a manufacturer-recommended substitute based on compatibility within these electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the P4SMA12A-E3/5A and PTVS13VS1UR,115 are active production components with ROHS3 compliance and REACH unaffected status. The PTVS13VS1UR,115 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. Selection between these parts should be based on specific application voltage requirements, package constraints, and operating temperature specifications. The difference in package type (DO-214AC versus SOD-123W) requires PCB layout verification for mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can PTVS13VS1UR,115 directly replace P4SMA12A-E3/5A in all applications?

A: Direct replacement requires verification of three factors: (1) PCB footprint compatibility between DO-214AC and SOD-123W packages, (2) circuit voltage tolerance for the higher standoff voltage (13V vs 10.2V), and (3) peak pulse current requirements (18.6A vs 24A). The substitute part has lower peak pulse current rating.

Q: What are the key electrical differences between these parts?

A: The PTVS13VS1UR,115 has a higher reverse standoff voltage (13V vs 10.2V) and higher clamping voltage (21.5V vs 16.7V), but lower peak pulse current capability (18.6A vs 24A). Both maintain 400W peak pulse power rating.

Q: Are there package compatibility concerns?

A: Yes. The P4SMA12A-E3/5A uses DO-214AC (SMA) package while PTVS13VS1UR,115 uses SOD-123W package. These have different footprints and require PCB layout modification.

Q: Does the PTVS13VS1UR,115 meet automotive standards?

A: Yes, the PTVS13VS1UR,115 carries AEC-Q101 qualification, suitable for automotive applications. The P4SMA12A-E3/5A does not list automotive qualification.

Q: What is the operating temperature difference?

A: P4SMA12A-E3/5A operates from -65°C to 150°C (junction temperature). PTVS13VS1UR,115 operates from -55°C to 150°C (ambient temperature). The P4SMA12A-E3/5A has a lower minimum temperature specification.