SLD14-018-B Equivalent & Substitute Parts

Part Overview

The SLD14-018-B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for through-hole mounting in P600 axial package configuration. This component provides transient overvoltage protection with a 14V reverse standoff voltage and 23.2V maximum clamping voltage at peak pulse current. The part is actively produced, AEC-Q101 qualified for automotive applications, and ROHS3 compliant. Substitute parts are identified when electrical characteristics, mechanical compatibility, and regulatory compliance remain equivalent across the specified parameter set.

Substiute Parts

SLD14-018-B

Littelfuse Inc.In Stock: 1145SLD14-018-B Datasheet

Current PartRFQ

5KP14CA

Littelfuse Inc.In Stock: 31835KP14CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLD14-018-B is determined by equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 14V (Typ)
• Voltage - Breakdown: 15.6V (Min)
• Voltage - Clamping: 23.2V (Max) @ Ipp
• Current - Peak Pulse: 219.8A (10/1000µs)
• Power - Peak Pulse: 5000W
• Package / Case: P600, Axial
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Operating Temperature: -55°C to 175°C (TJ)

The 5KP14CA meets all specified electrical and mechanical parameters. Both parts are manufactured by Littelfuse Inc., share identical voltage and current ratings, operate across the same temperature range, and utilize the same P600 axial through-hole package. Regulatory compliance (ROHS3, REACH Unaffected, EAR99) is equivalent between both parts.

Parameter Comparison

Engineering Selection Recommendations

Both the SLD14-018-B and 5KP14CA are active production parts from Littelfuse Inc. with equivalent electrical specifications and mechanical compatibility. Selection between these parts may be based on packaging availability: the SLD14-018-B is supplied in Bulk packaging, while the 5KP14CA is available in Cut Tape (CT) packaging. Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance, making them suitable for equivalent circuit applications requiring 14V TVS protection with 5kW peak pulse power dissipation in through-hole P600 axial packages.

Frequently Asked Questions (FAQ)

Q: Can the 5KP14CA replace the SLD14-018-B in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters: 14V reverse standoff voltage, 23.2V clamping voltage, 219.8A peak pulse current, 5000W peak pulse power, P600 axial through-hole package, and -55°C to 175°C operating temperature range.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. The SLD14-018-B is supplied in Bulk packaging, while the 5KP14CA is supplied in Cut Tape (CT). Both parts are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications.

Q: Are both parts automotive qualified?

A: The SLD14-018-B carries AEC-Q101 automotive qualification. The 5KP14CA is listed as an active production part from Littelfuse Inc. Both parts are ROHS3 compliant and REACH unaffected.

Q: Can these parts be used interchangeably on PCBs?

A: Yes. Both parts use identical P600 axial through-hole package configuration and can be mounted in the same footprint without modification.

Q: What applications are these parts suitable for?

A: The SLD14-018-B is specified for general transient voltage suppression. The 5KP14CA is specified for general purpose applications. Both provide bidirectional overvoltage protection in circuits requiring 14V standoff voltage and 5kW peak pulse power handling.