SA16CA Equivalent & Substitute Parts

Part Overview

The SA16CA is a 16V Zener Transient Voltage Suppressor (TVS) diode in DO-15 package configuration, designed for general-purpose transient voltage protection applications. Manufactured by onsemi, this component features a 26V maximum clamping voltage and 19.2A peak pulse current capability with 500W peak pulse power dissipation. The SA16CA is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	16V
Voltage - Breakdown (Min)	17.8V
Voltage - Clamping (Max) @ Ipp	26V
Current - Peak Pulse (10/1000µs)	19.2A
Power - Peak Pulse	500W
Type	Zener
Bidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Applications	General Purpose

Substitute Part Grouping Explanation

Substitute parts for the SA16CA are classified into two categories based on electrical parameter alignment and product status:

Direct Equivalents (Identical Electrical Parameters): Parts maintaining the exact reverse standoff voltage (16V), breakdown voltage (17.8V minimum), clamping voltage (26V maximum), and peak pulse current specifications. These parts are sourced from different manufacturers or packaging configurations but deliver equivalent circuit performance.

Similar Substitutes (Minor Parameter Variance): Parts with identical voltage ratings and clamping characteristics but with peak pulse current specifications within acceptable tolerance ranges (19.2A to 20A). These parts satisfy the same circuit protection requirements while accommodating minor manufacturing variations across suppliers.

Key Parameters Determining Substitution Eligibility:

Voltage - Reverse Standoff: 16V (fixed requirement)
Voltage - Clamping (Max) @ Ipp: 26V (fixed requirement)
Current - Peak Pulse: 19.2A minimum
Power - Peak Pulse: 500W (fixed requirement)
Package / Case: DO-204AC, DO-15, Axial (mechanical compatibility)
Mounting Type: Through Hole (fixed requirement)

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Package	Packaging Type
SA16CA	onsemi	Obsolete	16V	17.8V	26V	19.2A	500W	DO-15	-
SA16CA	Taiwan Semiconductor Corporation	Active	16V	17.8V	26V	20A	500W	DO-204AC (DO-15)	Tape & Reel (TR)
SA16CA-E3/54	Vishay General Semiconductor - Diodes Division	Active	16V	17.8V	26V	19.2A	500W	DO-204AC (DO-15)	Cut Tape (CT)
SA16CAHE3/54	Vishay General Semiconductor - Diodes Division	Active	16V	17.8V	26V	19.2A	500W	DO-204AC (DO-15)	Tape & Reel (TR)
SA16CA-TP	Micro Commercial Co	Active	16V	17.8V	26V	19.6A	500W	DO-15	Cut Tape (CT)
SA16CA-AP	Micro Commercial Co	Active	16V	17.8V	26V	19.6A	500W	DO-15	Bulk
SA16CA-BP	Micro Commercial Co	Active	16V	17.8V	26V	19.6A	500W	DO-15	Bulk
P5KE16CA-AP	Micro Commercial Co	Active	16V	17.8V	26V	19.2A	500W	DO-15	Bulk
P5KE16CA-BP	Micro Commercial Co	Active	16V	17.8V	26V	19.2A	500W	DO-15	Bulk
P5KE16CA-TP	Micro Commercial Co	Active	16V	17.8V	26V	19.2A	500W	DO-15	Bulk

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SA16CA-E3/54 (Vishay) and SA16CAHE3/54 (Vishay) are direct electrical equivalents with active product status and ROHS3 compliance. SA16CAHE3/54 carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. Both maintain identical voltage and current specifications to the original onsemi part.

Taiwan Semiconductor Corporation SA16CA provides an active equivalent with 20A peak pulse current (exceeding the 19.2A specification), available in Tape & Reel packaging for automated assembly processes.

Secondary Substitutes (Acceptable Alternatives):

Micro Commercial Co parts (SA16CA-TP, SA16CA-AP, SA16CA-BP, P5KE16CA-AP, P5KE16CA-BP, P5KE16CA-TP) maintain all critical voltage parameters with peak pulse current specifications of 19.2A to 19.6A. These parts are active and available in multiple packaging configurations (Cut Tape, Bulk). Selection among these variants depends on procurement packaging requirements and inventory availability.

Compliance Considerations:

All active substitute parts maintain REACH Unaffected status and EAR99 export classification consistent with the original component. Vishay parts carry ROHS3 compliance certification. Operating temperature ranges vary between -55°C to 175°C (most parts) and -65°C to 175°C (Micro Commercial Co P5KE series), accommodating diverse thermal environment requirements.

Frequently Asked Questions (FAQ)

Q: Can SA16CA-E3/54 directly replace the obsolete onsemi SA16CA?

A: Yes. SA16CA-E3/54 maintains identical electrical specifications: 16V reverse standoff voltage, 17.8V minimum breakdown voltage, 26V maximum clamping voltage, and 19.2A peak pulse current. Both are single-channel Zener TVS diodes in DO-15 package configuration suitable for general-purpose transient voltage suppression.

Q: What is the difference between SA16CA-TP and SA16CA-AP packaging?

A: SA16CA-TP is supplied in Cut Tape (CT) packaging for semi-automated component handling. SA16CA-AP is supplied in Bulk packaging for manual assembly or tape-and-reel conversion. Both contain identical electrical components with 19.6A peak pulse current specification.

Q: Are P5KE16CA series parts compatible with SA16CA applications?

A: Yes. P5KE16CA-AP, P5KE16CA-BP, and P5KE16CA-TP maintain the same 16V reverse standoff, 26V clamping voltage, and 19.2A peak pulse current as the original SA16CA. The P5KE designation indicates a different manufacturer series designation but equivalent electrical performance for general-purpose TVS applications.

Q: Does the 20A peak pulse current in Taiwan Semiconductor SA16CA exceed design limits?

A: No. The 20A specification exceeds the original 19.2A requirement, providing additional transient current handling capacity. This represents a performance enhancement rather than a deviation, maintaining full compatibility with circuits designed for the original 19.2A specification.

Q: Which substitute part offers automotive qualification?

A: SA16CAHE3/54 (Vishay) carries AEC-Q101 automotive qualification with operating temperature range -55°C to 175°C. This part is suitable for automotive and industrial applications requiring automotive-grade component reliability.

Q: Are all substitute parts ROHS compliant?

A: Vishay parts (SA16CA-E3/54, SA16CAHE3/54) and Micro Commercial Co SA16CA-TP carry ROHS3 compliance certification. Taiwan Semiconductor SA16CA status is not specified in provided data. All parts maintain REACH Unaffected status.

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