SA13C Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SA13C is a 13V Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in DO-204AC (DO-15) axial through-hole packaging. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SA13C provides bidirectional transient voltage suppression with a 22.58V maximum clamping voltage and 23.7A peak pulse current capability, suitable for general-purpose overvoltage protection applications.

Substiute Parts

SA13C

Littelfuse Inc.In Stock: 866SA13C Datasheet

Current PartRFQ

SA13CA

Taiwan Semiconductor CorporationIn Stock: 8351SA13CA Datasheet

DirectRFQ

SA13CA-AP

Micro Commercial CoIn Stock: 745SA13CA-AP Datasheet

MFR RecommendedRFQ

SA13CA-BP

Micro Commercial CoIn Stock: 764SA13CA-BP Datasheet

MFR RecommendedRFQ

SA13CA-TP

Micro Commercial CoIn Stock: 816SA13CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SA13C is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 13V (identical across all substitutes)
• Voltage - Breakdown (Min): Must support 13V standoff operation
• Voltage - Clamping (Max) @ Ipp: Maximum 22.58V (SA13CA variants at 21.5V are within acceptable range)
• Current - Peak Pulse (10/1000µs): Minimum 23.7A required
• Power - Peak Pulse: 500W (maintained across all variants)
• Operating Temperature Range: -55°C ~ 175°C (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: DO-204AC, DO-15, Axial (identical)
• Type: Zener (identical)
• Bidirectional Channels: 1 (identical)

The substitute parts SA13CA (Taiwan Semiconductor Corporation), SA13CA-AP, SA13CA-BP, and SA13CA-TP (all Micro Commercial Co) meet these electrical and mechanical requirements. All substitutes maintain the same 13V standoff voltage, 500W peak pulse power rating, and through-hole DO-15 axial package configuration.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts (SA13CA, SA13CA-AP, SA13CA-BP, SA13CA-TP) are functionally equivalent to the SA13C based on provided electrical and mechanical parameters. Selection should be based on the following factors:

Product Status: SA13CA (Taiwan Semiconductor Corporation) and all Micro Commercial Co variants (SA13CA-AP, SA13CA-BP, SA13CA-TP) maintain active product status, ensuring long-term availability and supply chain continuity compared to the obsolete SA13C.

Compliance: SA13CA is explicitly ROHS3 compliant. All substitutes carry REACH Unaffected status where specified, supporting regulatory requirements for new designs.

Packaging Availability: SA13CA is available in Tape & Reel (TR) packaging with 8,250 units in stock. SA13CA-AP, SA13CA-BP, and SA13CA-TP are available in Bulk packaging with 709, 732, and 733 units respectively. Packaging selection depends on production volume and assembly process requirements.

Electrical Performance: All substitutes deliver equivalent or superior electrical performance. SA13CA provides 24A peak pulse current versus the SA13C's 23.7A. Clamping voltage is reduced to 21.5V across all substitutes, providing improved transient suppression characteristics.

Frequently Asked Questions (FAQ)

Q: Can SA13CA variants be used as direct replacements for SA13C in existing designs?

A: Yes. All substitute parts maintain identical 13V reverse standoff voltage, 500W peak pulse power rating, and DO-15 axial through-hole package configuration. Electrical performance is equivalent or superior across all critical parameters.

Q: What is the difference between SA13CA, SA13CA-AP, SA13CA-BP, and SA13CA-TP?

A: These parts are electrically identical. The primary differences are manufacturer (Taiwan Semiconductor Corporation versus Micro Commercial Co) and packaging format (Tape & Reel versus Bulk). Selection depends on procurement and assembly requirements.

Q: Are there any temperature or compliance differences between the main part and substitutes?

A: No. All parts operate across the identical -55°C to 175°C temperature range. SA13CA is ROHS3 compliant. All substitutes carry REACH Unaffected status where specified, meeting current regulatory requirements.

Q: Does the lower clamping voltage (21.5V) of substitutes affect circuit protection?

A: No. The reduced clamping voltage of 21.5V versus 22.58V represents improved transient suppression performance. Lower clamping voltage provides better protection for downstream components by limiting voltage peaks to a lower threshold.

Q: Which substitute should be selected for high-volume production?

A: SA13CA in Tape & Reel packaging offers the highest inventory (8,250 units) and is optimized for automated assembly processes. This variant is recommended for production volumes requiring continuous supply and streamlined manufacturing workflows.