P4SMA350AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P4SMA350AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at a reverse standoff voltage of 300V with a maximum clamping voltage of 482V and peak pulse current of 620mA. The device is qualified to AEC-Q101 automotive standards and complies with ROHS3 and REACH requirements.

The P4SMA350AHM3_A/I is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring identical electrical and mechanical specifications.

Substiute Parts

P4SMA350AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1016P4SMA350AHM3_A/I Datasheet

Current PartRFQ

P4SMA350AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 783P4SMA350AHM3_B/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4SMA350AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 300V
• Voltage - Breakdown (Min): 333V
• Voltage - Clamping (Max) @ Ipp: 482V
• Current - Peak Pulse (10/1000µs): 620mA
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC (SMA)
• Mounting Type: Surface Mount
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The P4SMA350AHM3_B/I meets all these criteria and is classified as a direct manufacturer equivalent. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The P4SMA350AHM3_B/I is a direct electrical and mechanical equivalent to the P4SMA350AHM3_A/I. Both parts share identical electrical specifications, automotive qualification (AEC-Q101), and compliance certifications (ROHS3, REACH).

The primary difference is product status: the P4SMA350AHM3_A/I is discontinued, while the P4SMA350AHM3_B/I remains active. The P4SMA350AHM3_B/I is supplied in Tape & Reel (TR) packaging format, whereas the original part was supplied in bulk packaging.

For new designs or replenishment of discontinued inventory, the P4SMA350AHM3_B/I provides full functional and compliance equivalence with the advantage of active product status and continued manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the P4SMA350AHM3_B/I be used as a direct replacement for the P4SMA350AHM3_A/I?

A: Yes. Both parts are manufactured by Vishay and share identical electrical specifications, including reverse standoff voltage (300V), clamping voltage (482V), peak pulse current (620mA), and power rating (400W). Both are qualified to AEC-Q101 automotive standards and comply with ROHS3 and REACH requirements.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging format. The P4SMA350AHM3_A/I is supplied in bulk packaging, while the P4SMA350AHM3_B/I is supplied in Tape & Reel (TR) format. Additionally, the P4SMA350AHM3_B/I maintains active product status, whereas the P4SMA350AHM3_A/I is discontinued.

Q: Are there any compatibility concerns when switching from P4SMA350AHM3_A/I to P4SMA350AHM3_B/I?

A: No compatibility concerns exist. Both parts use the identical DO-214AC (SMA) surface mount package and have matching electrical characteristics. The Tape & Reel packaging of the P4SMA350AHM3_B/I is compatible with standard automated assembly equipment.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the P4SMA350AHM3_A/I and P4SMA350AHM3_B/I are qualified to AEC-Q101 automotive standards and are suitable for automotive applications requiring transient voltage suppression.

Q: What is the operating temperature range for these parts?

A: Both parts operate across the temperature range of -65°C to 150°C (junction temperature), meeting automotive environmental requirements.