SA100A Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA100A is a unidirectional Zener-type transient voltage suppressor diode in DO-15 (DO-204AC) axial package configuration. Manufactured by onsemi, this component is designed for general-purpose transient voltage suppression applications with a 100V reverse standoff voltage and 162V maximum clamping voltage. The SA100A is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Active alternatives from multiple manufacturers provide identical electrical performance with current product status and full compliance certifications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	100	V
Voltage - Breakdown (Min)	111	V
Voltage - Clamping (Max) @ Ipp	162	V
Current - Peak Pulse (10/1000µs)	3.1	A
Power - Peak Pulse	500	W
Type	Zener	—
Unidirectional Channels	1	—
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SA100A is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 100V
Voltage - Breakdown (Min): 111V
Voltage - Clamping (Max) @ Ipp: 162V
Current - Peak Pulse (10/1000µs): 3.1A (or higher)
Power - Peak Pulse: 500W
Type: Zener, Unidirectional
Mounting Type: Through Hole
Package / Case: DO-204AC or DO-15 Axial

All substitute parts listed maintain these core electrical specifications. Variations in packaging format (Tape & Reel versus Bulk) and manufacturer source do not affect electrical compatibility. Minor variations in peak pulse current (3.2A versus 3.1A) represent improved performance and are acceptable for substitution.

Parameter Comparison

Part Number	Manufacturer	VWM (V)	VBR (V)	VC (V)	Ipp (A)	Ppk (W)	Package	Status	Temp Range (°C)
SA100A	onsemi	100	111	162	3.1	500	DO-15	Obsolete	—
SA100A-E3/54	Vishay General Semiconductor	100	111	162	3.1	500	DO-204AC	Active	-55 to 175
SA100AHE3/54	Vishay General Semiconductor	100	111	162	3.1	500	DO-204AC	Active	-55 to 175
SA100A	Taiwan Semiconductor Corporation	100	111	162	3.2	500	DO-204AC	Active	-55 to 175
SA100A-AP	Micro Commercial Co	100	111	162	3.1	500	DO-15	Active	-55 to 175
SA100A-BP	Micro Commercial Co	100	111	162	3.1	500	DO-15	Active	-55 to 175
SA100A-TP	Micro Commercial Co	100	111	162	3.1	500	DO-15	Active	-55 to 175
P5KE100A-AP	Micro Commercial Co	100	111	162	3.1	500	DO-15	Active	-65 to 175
P5KE100A-BP	Micro Commercial Co	100	111	162	3.1	500	DO-15	Active	-65 to 175
P5KE100A-TP	Micro Commercial Co	100	111	162	3.1	500	DO-15	Active	-65 to 175

Engineering Selection Recommendations

Direct substitutes for the obsolete SA100A (onsemi) are available from three active manufacturers: Vishay General Semiconductor, Taiwan Semiconductor Corporation, and Micro Commercial Co. All substitute parts maintain identical electrical specifications and through-hole axial package configuration.

Vishay SA100A-E3/54 and SA100AHE3/54 are direct functional equivalents in DO-204AC package with ROHS3 compliance and active product status. The SA100AHE3/54 variant includes AEC-Q101 automotive qualification for applications requiring automotive-grade components.

Taiwan Semiconductor Corporation SA100A offers equivalent performance with marginally improved peak pulse current (3.2A versus 3.1A) and ROHS3 compliance.

Micro Commercial Co variants (SA100A-AP, SA100A-BP, SA100A-TP and P5KE100A series) provide identical electrical performance with extended low-temperature operating range (-65°C minimum versus -55°C). Selection among these variants depends on packaging preference: Tape & Reel for automated assembly or Bulk for manual assembly applications.

All substitute parts carry REACH Unaffected status and EAR99 export classification matching the original component.

Frequently Asked Questions (FAQ)

Q: Can SA100A-E3/54 replace the obsolete onsemi SA100A directly?

A: Yes. SA100A-E3/54 from Vishay General Semiconductor maintains identical electrical specifications (100V standoff, 162V clamping, 3.1A peak pulse current, 500W peak power) and through-hole axial package configuration. The component is active with ROHS3 compliance.

Q: What is the difference between Vishay SA100A-E3/54 and SA100AHE3/54?

A: Both parts are electrically identical with matching specifications and operating temperature range (-55°C to 175°C). SA100AHE3/54 includes AEC-Q101 automotive qualification, making it suitable for automotive applications requiring this certification. SA100A-E3/54 is suitable for general-purpose applications.

Q: Are Micro Commercial Co P5KE100A series parts compatible with SA100A?

A: Yes. P5KE100A-AP, P5KE100A-BP, and P5KE100A-TP maintain identical electrical specifications and DO-15 package configuration. These parts offer extended low-temperature operation (-65°C minimum) compared to the original SA100A specification.

Q: What is the difference between Tape & Reel and Bulk packaging?

A: Tape & Reel packaging is formatted for automated pick-and-place assembly equipment. Bulk packaging is supplied loose for manual assembly or reel-loading operations. Electrical performance and component specifications are identical regardless of packaging format.

Q: Can I use Taiwan Semiconductor Corporation SA100A as a substitute?

A: Yes. This variant provides equivalent performance with marginally improved peak pulse current specification (3.2A versus 3.1A), representing enhanced capability. Operating temperature range (-55°C to 175°C) and all other electrical parameters match the original SA100A.

Q: Which substitute part should I select for new designs?

A: Selection depends on application requirements and supply chain preferences. Vishay SA100A-E3/54 is recommended for general-purpose applications. SA100AHE3/54 is required for automotive applications with AEC-Q101 qualification. Micro Commercial Co variants offer extended temperature range and multiple packaging options. All parts are electrically interchangeable.

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