SA8.5AHE3/54 Equivalent & Substitute Parts

Part Overview

The SA8.5AHE3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component operates with an 8.5V reverse standoff voltage and provides 14.4V clamping at peak pulse current. The part is actively produced, AEC-Q101 qualified for automotive applications, and RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

SA8.5AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 847SA8.5AHE3/54 Datasheet

Current PartRFQ

P6KE10A

Fairchild SemiconductorIn Stock: 5025P6KE10A Datasheet

MFR RecommendedRFQ

SA8.5A

Taiwan Semiconductor CorporationIn Stock: 8461SA8.5A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SA8.5AHE3/54 is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 8.5V
• Voltage - Clamping (Max) @ Ipp: 14.4V ± tolerance
• Current - Peak Pulse (10/1000µs): minimum 34.7A
• Package / Case: DO-204AC or DO-15 (axial through-hole)
• Unidirectional Channels: 1
• Type: Zener TVS Diode

Substitute parts must maintain electrical equivalence within the specified voltage and current parameters and use compatible through-hole packaging. Parts listed below satisfy these criteria.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SA8.5AHE3/54, P6KE10A, and SA8.5A—are actively produced and suitable for direct substitution based on electrical parameters. Selection should consider the following factors:

SA8.5AHE3/54 (Vishay): Automotive-grade component with AEC-Q101 qualification. Recommended for applications requiring automotive certification compliance. Operating temperature range extends to -55°C minimum.

P6KE10A (Fairchild Semiconductor): Offers higher peak pulse current (43A) and power dissipation (600W) compared to the main part. Operating temperature minimum is -50°C. Suitable for applications with higher transient stress requirements.

SA8.5A (Taiwan Semiconductor Corporation): Maintains identical voltage and temperature specifications to the main part. Peak pulse current is 36A, marginally higher than the main part. RoHS3 compliant and available in tape & reel packaging.

All parts are RoHS3 compliant and use compatible DO-204AC/DO-15 through-hole packaging.

Frequently Asked Questions (FAQ)

Q: Can P6KE10A replace SA8.5AHE3/54 in automotive applications?

A: P6KE10A is electrically compatible but lacks AEC-Q101 automotive qualification. Use only in non-automotive applications or where automotive certification is not required.

Q: What is the difference between SA8.5A and SA8.5AHE3/54?

A: Both parts share identical voltage specifications (8.5V standoff, 14.4V clamping) and operating temperature range (-55°C to 175°C). SA8.5A has a peak pulse current of 36A versus 34.7A for the main part. Both are RoHS3 compliant.

Q: Are all substitute parts available in the same packaging?

A: Yes. All three parts use DO-204AC/DO-15 axial through-hole packaging and are compatible with identical PCB layouts.

Q: Which substitute part has the highest current rating?

A: P6KE10A provides the highest peak pulse current at 43A and peak pulse power at 600W, compared to 34.7A and 500W for the main part.

Q: Can I use these parts interchangeably without circuit redesign?

A: Yes, provided the application does not require automotive-grade certification. All parts maintain the same reverse standoff voltage (8.5V) and clamping voltage (14.4V ± 0.1V), ensuring functional equivalence in transient suppression circuits.