P4SMA480AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P4SMA480AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient protection. This component operates with a 408V reverse standoff voltage and provides 658V maximum clamping voltage with 460mA peak pulse current capability in a surface mount DO-214AC (SMA) package.

The P4SMA480AHM3_A/I is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this specific voltage and current rating.

Substiute Parts

P4SMA480AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 871P4SMA480AHM3_A/I Datasheet

Current PartRFQ

P4SMA480AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 852P4SMA480AHM3_B/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P4SMA480AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 408V (Typ)
• Voltage - Breakdown: 456V (Min)
• Voltage - Clamping: 658V (Max @ Ipp)
• Current - Peak Pulse: 460mA (10/1000µs)
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Operating Temperature: -65°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The P4SMA480AHM3_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 P4SMA480AHM3_B/I is the direct equivalent substitute for the P4SMA480AHM3_A/I. Both components share identical electrical specifications, automotive grade classification, and AEC-Q101 qualification. The P4SMA480AHM3_B/I maintains active product status and is available in Tape & Reel packaging format, making it suitable for production environments requiring automated assembly processes.

Selection between these parts should be based on packaging requirements and supply chain availability. The electrical performance and compliance certifications are equivalent across both part numbers.

Frequently Asked Questions (FAQ)

Q: Can P4SMA480AHM3_B/I be used as a direct replacement for P4SMA480AHM3_A/I?

A: Yes. Both parts are manufactured by Vishay and share identical electrical parameters, including voltage ratings, current ratings, and operating temperature range. The primary difference is packaging format.

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

A: The P4SMA480AHM3_A/I and P4SMA480AHM3_B/I differ in packaging format. The P4SMA480AHM3_B/I is supplied in Tape & Reel (TR) format, while the P4SMA480AHM3_A/I uses standard packaging. Electrical specifications are identical.

Q: Are both parts automotive qualified?

A: Yes. Both the P4SMA480AHM3_A/I and P4SMA480AHM3_B/I carry automotive grade classification and AEC-Q101 qualification, meeting automotive industry reliability standards.

Q: What is the DO-214AC (SMA) package?

A: DO-214AC, also designated as SMA, is a surface mount package for semiconductor diodes. Both substitute parts use this identical package, ensuring PCB footprint compatibility.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) packaging is a supply and handling format used for automated assembly. It does not alter the electrical characteristics or performance of the component.

Q: What is the MSL rating and why does it matter?

A: Both parts have MSL 1 (Unlimited), indicating unlimited shelf life without moisture absorption concerns. This simplifies storage and handling requirements.