SA16C-B Equivalent & Substitute Parts

Part Overview

The SA16C-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for transient overvoltage protection in telecom applications. This component features a 16V reverse standoff voltage with a 26V maximum clamping voltage and 19.6A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package.

The SA16C-B carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this TVS diode specification.

Substiute Parts

SA16C-B

Littelfuse Inc.In Stock: 842SA16C-B Datasheet

Current PartRFQ

SA16CA

Taiwan Semiconductor CorporationIn Stock: 1643SA16CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA16C-B is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 16V
• Voltage - Breakdown (Min): 17.8V
• Voltage - Clamping (Max) @ Ipp: 26V
• Current - Peak Pulse (10/1000µs): ≥19.6A
• Power - Peak Pulse: 500W
• Bidirectional Channels: 1
• Type: Zener

Mechanical Equivalence Criteria:

• Package / Case: DO-204AC (DO-15)
• Mounting Type: Through Hole
• Operating Temperature Range: Compatible with -65°C to 175°C

The SA16CA meets all electrical and mechanical substitution criteria. This part maintains identical voltage specifications, exceeds the minimum peak pulse current requirement (20A vs. 19.6A), and is housed in the same DO-204AC through-hole package. The SA16CA is classified as an active product with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

The SA16CA is a direct functional substitute for the SA16C-B based on electrical and mechanical parameter equivalence. The following factors support this substitution:

Product Status: The SA16CA carries an active product status with current manufacturing availability, addressing the obsolescence of the SA16C-B. The SA16CA is available in higher inventory quantities (1621 pcs) compared to remaining SA16C-B stock (832 pcs).

Compliance & Certifications: Both parts maintain RoHS compliance. The SA16CA meets ROHS3 compliance standards and is REACH unaffected, providing enhanced regulatory alignment for new designs and ongoing production.

Electrical Performance: The SA16CA meets or exceeds all critical electrical parameters. Peak pulse current is specified at 20A, which exceeds the SA16C-B minimum requirement of 19.6A. All voltage parameters remain identical.

Thermal Operating Range: The SA16CA operates across -55°C to 175°C, which encompasses the primary operating range of the SA16C-B. Applications requiring the full -65°C lower temperature limit of the SA16C-B require design review.

Packaging & Mounting: Both parts utilize identical DO-204AC (DO-15) through-hole axial packaging, enabling direct mechanical substitution without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the SA16CA replace the SA16C-B in existing designs without modification?

A: Yes. The SA16CA is mechanically and electrically equivalent. Both parts use the same DO-204AC (DO-15) through-hole axial package and share identical voltage specifications (16V standoff, 26V clamping). The SA16CA peak pulse current (20A) exceeds the SA16C-B requirement (19.6A). No PCB redesign is required.

Q: What is the difference in operating temperature range between these parts?

A: The SA16C-B operates from -65°C to 175°C, while the SA16CA operates from -55°C to 175°C. The SA16CA does not support the full lower temperature range. Applications requiring operation below -55°C must retain the SA16C-B or identify alternative parts with extended low-temperature specifications.

Q: Are there packaging differences between SA16C-B and SA16CA?

A: Both parts are supplied in DO-204AC (DO-15) through-hole axial packages. The SA16C-B is supplied in standard packaging, while the SA16CA is supplied in Tape & Reel (TR) format. This difference affects handling and assembly processes but does not impact electrical or mechanical compatibility.

Q: Why is the SA16C-B classified as obsolete?

A: The SA16C-B is a legacy product no longer in active production. The SA16CA represents the current active equivalent from Taiwan Semiconductor Corporation, offering improved supply chain availability and compliance with current regulatory standards.

Q: What compliance certifications apply to the SA16CA?

A: The SA16CA is ROHS3 compliant and REACH unaffected. Both certifications exceed the RoHS compliance of the SA16C-B, providing enhanced regulatory alignment for applications subject to current environmental and safety standards.

Q: Are there any applications where SA16C-B cannot be substituted with SA16CA?

A: Applications requiring operation below -55°C junction temperature require design review. The SA16C-B supports -65°C minimum, while the SA16CA supports -55°C minimum. All other telecom and general-purpose transient overvoltage protection applications are compatible with direct substitution.