SA14C Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SA14C is a 14V Zener transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. The device features a 24.36V maximum clamping voltage and 22A peak pulse current capability in a DO-204AC (DO-15) axial package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

SA14C

Littelfuse Inc.In Stock: 814SA14C Datasheet

Current PartRFQ

SA14CA

Taiwan Semiconductor CorporationIn Stock: 1115SA14CA Datasheet

DirectRFQ

SA14CA-AP

Micro Commercial CoIn Stock: 812SA14CA-AP Datasheet

MFR RecommendedRFQ

SA14CA-BP

Micro Commercial CoIn Stock: 692SA14CA-BP Datasheet

MFR RecommendedRFQ

SA14CA-TP

Micro Commercial CoIn Stock: 965SA14CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA14C are qualified based on the following electrical and mechanical parameters:

• Reverse standoff voltage: 14V (identical)
• Breakdown voltage minimum: 14.76V or higher
• Clamping voltage maximum: within acceptable range for circuit protection (23.2V to 24.36V)
• Peak pulse current: 22A or higher
• Power dissipation: 500W
• Package: DO-204AC (DO-15) axial through-hole
• Operating temperature: -55°C to 175°C
• Type: Zener diode, bidirectional, single channel

All substitute parts maintain these core electrical specifications and physical form factor, ensuring functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status, ensuring long-term availability and supply chain stability. The SA14CA from Taiwan Semiconductor Corporation and the SA14CA variants from Micro Commercial Co (SA14CA-AP, SA14CA-BP, SA14CA-TP) are functionally equivalent to the obsolete SA14C.

The SA14CA offers marginally improved peak pulse current (22.6A versus 22A) and lower clamping voltage (23.2V versus 24.36V), providing enhanced protection margins in transient suppression applications. All substitute parts maintain ROHS3 compliance or equivalent environmental standards and operate across the full -55°C to 175°C temperature range.

Selection between substitute options should be based on packaging preference (tape & reel versus bulk) and supplier availability. The electrical performance differences are negligible for general-purpose overvoltage protection circuits.

Frequently Asked Questions (FAQ)

Q: Can SA14CA, SA14CA-AP, SA14CA-BP, and SA14CA-TP be used interchangeably with SA14C?

A: Yes. All substitute parts maintain identical reverse standoff voltage (14V), equivalent breakdown voltage specifications, compatible clamping voltage ranges, and matching peak pulse current ratings. The through-hole DO-15 package ensures mechanical compatibility with existing PCB layouts designed for SA14C.

Q: What is the difference between SA14CA and the SA14CA variants (AP, BP, TP)?

A: The primary difference is packaging. SA14CA is supplied in tape & reel format, while SA14CA-AP, SA14CA-BP, and SA14CA-TP are supplied in bulk packaging. All variants share identical electrical specifications and performance characteristics.

Q: Why is the SA14C obsolete, and what does this mean for my design?

A: Obsolete status indicates the part is no longer manufactured by Littelfuse Inc. Substituting with active-status equivalents ensures continued component availability, manufacturing support, and compliance with current environmental regulations. All listed substitutes are currently in active production.

Q: Are there any temperature or compliance differences between SA14C and its substitutes?

A: No. All parts operate across -55°C to 175°C and maintain ROHS3 compliance or equivalent environmental standards. Operating temperature range and regulatory compliance are identical across all options.

Q: What should I verify when switching from SA14C to a substitute part?

A: Confirm that the clamping voltage (23.2V for substitutes versus 24.36V for SA14C) and peak pulse current (22A to 22.6A) remain acceptable for your circuit protection requirements. Verify PCB layout compatibility with the DO-15 axial through-hole package.