P4SMA10AHM3/H Equivalent & Substitute Parts

Part Overview

The P4SMA10AHM3/H is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient protection. This component features a 8.55V reverse standoff voltage with a 14.5V maximum clamping voltage and 27.6A peak pulse current capability in a surface mount DO-214AC (SMA) package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

P4SMA10AHM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 981P4SMA10AHM3/H Datasheet

Current PartRFQ

P4SMA10AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 725P4SMA10AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P4SMA10AHM3/H is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 8.55V
• Voltage - Breakdown (Min): 9.5V
• Voltage - Clamping (Max) @ Ipp: 14.5V
• Current - Peak Pulse (10/1000µs): 27.6A
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC (SMA)
• Unidirectional Channels: 1
• Type: Zener

The substitute part P4SMA10AHM3_A/H meets all electrical and mechanical specifications of the original part. The primary difference is packaging configuration (Tape & Reel versus bulk) and product status (Active versus Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The P4SMA10AHM3_A/H is a direct functional equivalent to the P4SMA10AHM3/H. Both parts share identical electrical specifications, thermal ratings, and automotive-grade qualifications (AEC-Q101). The substitute part maintains ROHS3 compliance and unlimited moisture sensitivity rating.

The primary distinction is product availability status: the original part is discontinued, while the substitute remains in active production. The packaging difference (Tape & Reel versus bulk) reflects standard industry supply chain practices and does not affect electrical performance or PCB assembly compatibility for surface mount applications.

Selection of P4SMA10AHM3_A/H is appropriate for new designs, production runs, and field replacements where the original part number is no longer available through distribution channels.

Frequently Asked Questions (FAQ)

Q: Are the electrical characteristics identical between P4SMA10AHM3/H and P4SMA10AHM3_A/H?

A: Yes. Both parts share identical voltage ratings (8.55V reverse standoff, 9.5V breakdown minimum, 14.5V clamping maximum), current specifications (27.6A peak pulse), and power dissipation (400W peak pulse). They are functionally equivalent for all transient voltage suppression applications.

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

A: The primary difference is packaging configuration. P4SMA10AHM3/H is supplied in bulk packaging, while P4SMA10AHM3_A/H is supplied in Tape & Reel (TR) format. Additionally, P4SMA10AHM3/H is discontinued, whereas P4SMA10AHM3_A/H remains in active production.

Q: Can P4SMA10AHM3_A/H be used as a direct replacement on existing PCBs?

A: Yes. Both parts use the identical DO-214AC (SMA) surface mount package. PCB footprints, assembly processes, and reflow profiles are compatible. No design modifications are required.

Q: Are both parts automotive-grade qualified?

A: Yes. Both P4SMA10AHM3/H and P4SMA10AHM3_A/H carry automotive-grade classification with AEC-Q101 qualification and operate across the -65°C to 150°C temperature range.

Q: What is the significance of the Tape & Reel packaging for P4SMA10AHM3_A/H?

A: Tape & Reel packaging is standard for high-volume automated assembly operations. It provides better handling efficiency and cost optimization for production environments compared to bulk packaging. The component itself is identical.