SA13CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA13CA is a through-hole Zener-type transient voltage suppressor manufactured by onsemi, rated for 13V reverse standoff with 21.5V maximum clamping voltage and 23.2A peak pulse current. The component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement.

Substiute Parts

SA13CA

onsemiIn Stock: 8261SA13CA Datasheet

Current PartRFQ

SA13CA

Taiwan Semiconductor CorporationIn Stock: 8351SA13CA Datasheet

DirectRFQ

P5KE13CA-AP

Micro Commercial CoIn Stock: 752P5KE13CA-AP Datasheet

SimilarRFQ

P5KE13CA-BP

Micro Commercial CoIn Stock: 803P5KE13CA-BP Datasheet

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P5KE13CA-TP

Micro Commercial CoIn Stock: 1239P5KE13CA-TP Datasheet

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SLD13-018

Littelfuse Inc.In Stock: 2580SLD13-018 Datasheet

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SLD13-018-B

LittelfuseIn Stock: 723SLD13-018-B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA13CA is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff: 13V (±tolerance)
• Voltage - Clamping (Max) @ Ipp: 21.5V
• Bidirectional Channels: 1
• Type: Zener
• Mounting Type: Through Hole
• Package compatibility: DO-15 or DO-204AC (axial configuration)
• Applications: General Purpose

Substitute parts are grouped into two categories based on package form factor and current handling capacity:

Category 1: Direct Package Equivalents (DO-15/DO-204AC) Parts maintaining the original DO-15 package form factor with matched electrical specifications. These include the Taiwan Semiconductor Corporation SA13CA variant and Micro Commercial Co P5KE13CA series (AP, BP, TP variants).

Category 2: Higher Current Capacity Alternatives (P600 Package) Littelfuse SLD13-018 series parts with identical voltage ratings but enhanced current handling (237.2A vs. 23.2A) and power dissipation (5kW vs. 500W) in a larger P600 package form factor. These are suitable only where mechanical space permits package substitution.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement)

The Taiwan Semiconductor Corporation SA13CA provides direct functional equivalence with active product status and ROHS3 compliance. Peak pulse current specification of 24A exceeds the original 23.2A requirement while maintaining identical voltage ratings and package form factor.

The Micro Commercial Co P5KE13CA series (variants AP, BP, TP) offers electrical equivalence with active status. All three variants maintain 23.2A peak pulse current and 500W power dissipation specifications. Selection among AP, BP, and TP variants depends on packaging requirements (Bulk packaging available for all three).

Alternative Substitutes (Package Substitution Required)

The Littelfuse SLD13-018 and SLD13-018-B parts maintain voltage equivalence but require mechanical redesign due to P600 package form factor. These parts are qualified to AEC-Q101 automotive standard and provide significantly higher current handling (237.2A) and power dissipation (5kW). Selection is appropriate only where circuit board layout permits larger package accommodation and where enhanced transient protection capability is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the Taiwan Semiconductor Corporation SA13CA directly replace the onsemi SA13CA?

A: Yes. Both parts share identical voltage ratings (13V reverse standoff, 21.5V clamping), single bidirectional channel configuration, and DO-15 package form factor. The Taiwan Semiconductor variant specifies 24A peak pulse current, which exceeds the original 23.2A specification. The part is active and ROHS3 compliant.

Q: What is the difference between P5KE13CA-AP, P5KE13CA-BP, and P5KE13CA-TP?

A: All three Micro Commercial Co variants maintain identical electrical specifications (13V reverse standoff, 21.5V clamping, 23.2A peak pulse, 500W power). Differences are limited to packaging designation and inventory availability. All are supplied in Bulk packaging and are suitable for direct substitution.

Q: Can Littelfuse SLD13-018 replace SA13CA in existing designs?

A: Electrical substitution is valid; voltage ratings and clamping characteristics are identical. However, mechanical substitution requires design modification. The SLD13-018 uses P600 package (larger form factor) versus the original DO-15 package. This part is qualified to AEC-Q101 automotive standard and provides 237.2A peak pulse current and 5kW power dissipation, suitable for applications requiring enhanced transient protection.

Q: Are all substitute parts RoHS compliant?

A: The Taiwan Semiconductor Corporation SA13CA is ROHS3 compliant. The Micro Commercial Co P5KE13CA series does not specify RoHS status in provided data. The Littelfuse SLD13-018 and SLD13-018-B are ROHS3 compliant.

Q: What is the operating temperature range for substitute parts?

A: Taiwan Semiconductor Corporation SA13CA: -55°C to 175°C (TJ). Micro Commercial Co P5KE13CA series: -65°C to 175°C (TJ). Littelfuse SLD13-018 and SLD13-018-B: -55°C to 175°C (TJ).

Q: Which substitute offers the best inventory availability?

A: Micro Commercial Co P5KE13CA-TP provides 1154 pieces in stock. Taiwan Semiconductor Corporation SA13CA and onsemi SA13CA each provide 8250 pieces. Littelfuse SLD13-018 provides 2550 pieces. Littelfuse SLD13-018-B provides 697 pieces.