SA150CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA150CA is a 150V Zener-type transient voltage suppressor diode manufactured by onsemi, housed in a DO-15 (DO-204AC) axial through-hole package. This component is designed for general-purpose transient voltage suppression applications with a 243V maximum clamping voltage and 2.1A peak pulse current capability. The original onsemi SA150CA is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	150V
Voltage - Breakdown (Min)	167V
Voltage - Clamping (Max) @ Ipp	243V
Current - Peak Pulse (10/1000µs)	2.1A
Power - Peak Pulse	500W
Type	Zener
Bidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial

Substitute Part Grouping Explanation

Substitution for the SA150CA is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

Voltage - Reverse Standoff: 150V (±tolerance)
Voltage - Clamping (Max) @ Ipp: 243V
Current - Peak Pulse (10/1000µs): 2.1A
Power - Peak Pulse: 500W
Type: Zener, Bidirectional (1 channel)
Package: DO-204AC / DO-15 axial through-hole

Substitute Categories:

Direct Equivalents - Identical electrical specifications and active product status:

SA150CA (Taiwan Semiconductor Corporation) - Active status, DO-204AC package variant
SA150CA-E3/54 (Vishay TransZorb®) - Active status, ROHS3 compliant
SA150CAHE3/54 (Vishay TransZorb®) - Active status, AEC-Q101 automotive qualified

Similar Equivalents - Matching electrical specifications, alternative packaging designations:

SA150CA-AP, SA150CA-BP, SA150CA-TP (Micro Commercial Co) - Active status, bulk packaging
P5KE150CA-AP, P5KE150CA-BP, P5KE150CA-TP (Micro Commercial Co) - Active status, bulk packaging

All listed substitutes maintain identical electrical performance parameters and through-hole axial mounting compatibility.

Parameter Comparison

Part Number	Manufacturer	Status	VWM (Typ)	VBR (Min)	VC (Max)	Ipp	Ppk	Package	Temp Range	Compliance
SA150CA	onsemi	Obsolete	150V	167V	243V	2.1A	500W	DO-15	-	REACH Unaffected
SA150CA	Taiwan Semiconductor	Active	150V	167V	243V	2.1A	500W	DO-204AC	-55°C ~ 175°C	ROHS3, REACH Unaffected
SA150CA-E3/54	Vishay	Active	150V	167V	243V	2.1A	500W	DO-204AC	-55°C ~ 175°C	ROHS3, REACH Unaffected
SA150CAHE3/54	Vishay	Active	150V	167V	243V	2.1A	500W	DO-204AC	-55°C ~ 175°C	ROHS3, AEC-Q101, REACH Unaffected
SA150CA-AP	Micro Commercial Co	Active	150V	167V	243V	2.1A	500W	DO-15	-55°C ~ 175°C	REACH Unaffected
SA150CA-BP	Micro Commercial Co	Active	150V	167V	243V	2.1A	500W	DO-15	-55°C ~ 175°C	REACH Unaffected
SA150CA-TP	Micro Commercial Co	Active	150V	167V	243V	2.1A	500W	DO-15	-55°C ~ 175°C	REACH Unaffected
P5KE150CA-AP	Micro Commercial Co	Active	150V	167V	243V	2.1A	500W	DO-15	-65°C ~ 175°C	REACH Unaffected
P5KE150CA-BP	Micro Commercial Co	Active	150V	167V	243V	2.1A	500W	DO-15	-65°C ~ 175°C	REACH Unaffected
P5KE150CA-TP	Micro Commercial Co	Active	150V	167V	243V	2.1A	500W	DO-15	-65°C ~ 175°C	REACH Unaffected

Engineering Selection Recommendations

For Standard Applications: Select SA150CA from Taiwan Semiconductor Corporation or Micro Commercial Co variants (SA150CA-AP, SA150CA-BP, SA150CA-TP). These parts maintain active product status and provide identical electrical specifications to the obsolete onsemi original.

For Automotive Applications: Select SA150CAHE3/54 from Vishay. This part carries AEC-Q101 automotive qualification and ROHS3 compliance, meeting automotive-grade reliability requirements while maintaining all electrical parameters.

For RoHS3 Compliance Requirements: Select either Vishay SA150CA-E3/54 or SA150CAHE3/54. Taiwan Semiconductor SA150CA also provides ROHS3 compliance. Micro Commercial Co variants do not specify RoHS status in provided data.

For Extended Temperature Range: Select P5KE150CA variants from Micro Commercial Co, which specify -65°C to 175°C operating range compared to -55°C to 175°C for other active substitutes.

All listed substitutes are electrically and mechanically interchangeable within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the obsolete onsemi SA150CA with any of the listed substitutes?

A: Yes. All listed substitutes maintain identical electrical specifications (150V standoff, 243V clamping, 2.1A peak pulse, 500W peak power) and use the same DO-15/DO-204AC axial through-hole package. Physical and electrical compatibility is confirmed.

Q: What is the difference between SA150CA and P5KE150CA variants?

A: Both part families meet identical electrical specifications for this 150V rating. The primary difference is the extended temperature range of P5KE150CA (-65°C to 175°C) compared to SA150CA (-55°C to 175°C). Select based on your application's temperature requirements.

Q: Which substitute should I use for new designs?

A: For new designs, select from active-status parts with current manufacturer support. Vishay SA150CA-E3/54 or SA150CAHE3/54 (with AEC-Q101 for automotive) provide long-term availability. Micro Commercial Co SA150CA-AP/BP/TP variants also provide active status with good inventory levels.

Q: Are there packaging differences between substitutes?

A: All substitutes use through-hole axial packages (DO-15 or DO-204AC designation). These are mechanically and electrically equivalent. Packaging differences relate to supplier designation only, not physical form factor.

Q: What compliance certifications should I verify for my application?

A: All listed parts are REACH Unaffected. For automotive applications, specify SA150CAHE3/54 (AEC-Q101 qualified). For RoHS3 compliance, select Vishay parts or Taiwan Semiconductor SA150CA. Verify specific compliance requirements with your application standards.

Q: Can I mix different substitute part numbers in the same design?

A: Yes. All substitutes are electrically and mechanically equivalent within the specified parameters. However, maintain consistent part sourcing within a production run to ensure supply chain continuity and identical device characteristics.

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