SA14CA Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The SA14CA is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage transient protection in through-hole applications. This bidirectional zener diode operates with a 14V reverse standoff voltage and provides 23.2V maximum clamping voltage at peak pulse current. The component is RoHS3 compliant and rated for operating temperatures from -55°C to 175°C. Substitute parts are identified to provide equivalent electrical and mechanical performance for applications requiring component alternatives due to inventory availability, supply chain considerations, or design flexibility.

Substiute Parts

SA14CA

Littelfuse Inc.In Stock: 1741SA14CA Datasheet

Current PartRFQ

SA14CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 2851SA14CA-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA14CA are qualified based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

• Identical reverse standoff voltage (14V typical)
• Identical breakdown voltage minimum (15.6V)
• Identical maximum clamping voltage (23.2V)
• Peak pulse current within acceptable tolerance (21.6A to 22A)
• Identical power dissipation rating (500W peak pulse)
• Identical operating temperature range (-55°C to 175°C)
• Identical package and mounting type (DO-204AC through-hole axial)
• Equivalent compliance certifications (RoHS3, REACH Unaffected)

The SA14CA-E3/54 manufactured by Vishay General Semiconductor meets all these criteria and qualifies as a direct electrical and mechanical substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the SA14CA and SA14CA-E3/54 are active products with equivalent electrical specifications and identical compliance certifications. Selection between these components should be based on:

• Availability and lead time requirements
• Procurement source and inventory status
• Manufacturing process consistency with existing supply chain documentation
• Cost considerations within equivalent performance parameters

The SA14CA-E3/54 exhibits a peak pulse current specification of 21.6A compared to the SA14CA's 22A, representing a 1.8% variance within acceptable engineering tolerance for this component category. Both devices maintain identical voltage parameters and power dissipation ratings, confirming functional equivalence in circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can SA14CA-E3/54 be used as a direct replacement for SA14CA in existing designs?

A: Yes. Both components share identical electrical specifications for reverse standoff voltage (14V), breakdown voltage (15.6V minimum), and clamping voltage (23.2V maximum). The peak pulse current variance (21.6A vs. 22A) is within acceptable tolerance. Both use identical DO-204AC through-hole packaging and operate across the same temperature range (-55°C to 175°C).

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SA14CA and SA14CA-E3/54 are RoHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for industrial and commercial applications.

Q: What is the significance of the peak pulse current difference (22A vs. 21.6A)?

A: The 0.4A difference represents a 1.8% variance and does not affect functional equivalence. Both devices are rated for 500W peak pulse power dissipation and maintain identical voltage clamping characteristics, confirming suitability for the same circuit protection applications.

Q: Are both parts suitable for the same PCB assembly processes?

A: Yes. Both components use identical DO-204AC (DO-15) axial through-hole packaging and are compatible with standard through-hole soldering and assembly procedures.

Q: What factors should determine component selection between SA14CA and SA14CA-E3/54?

A: Selection should be based on supply availability, lead time, procurement cost, and existing supply chain documentation. Electrical and mechanical performance are equivalent, making either component suitable for circuit protection applications requiring 14V standoff voltage and 23.2V clamping voltage specifications.