SLD22-018-B Equivalent & Substitute Parts

Part Overview

The SLD22-018-B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in the SLD series. This through-hole P600 axial package component is designed for transient voltage protection applications with a 22V reverse standoff voltage and 5000W peak pulse power rating. The part is active in production status and carries AEC-Q101 automotive qualification. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility for applications requiring alternative packaging formats or manufacturer sourcing options.

Substiute Parts

SLD22-018-B

Littelfuse Inc.In Stock: 854SLD22-018-B Datasheet

Current PartRFQ

5KP22CA

Littelfuse Inc.In Stock: 44435KP22CA Datasheet

MFR RecommendedRFQ

5KP22CA-TP

Micro Commercial CoIn Stock: 16425KP22CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLD22-018-B is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Power - Peak Pulse: 5000W (5kW)
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Mounting Type: Through Hole
• Package Category: Axial

The identified substitute parts maintain these core electrical specifications and through-hole axial mounting compatibility. Variations in packaging format (P600 versus R-6) and supplier packaging (Bulk versus Cut Tape) do not affect electrical equivalence. Both substitute parts are active production items with equivalent RoHS3 compliance and REACH status.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and full RoHS3 compliance. The SLD22-018-B and 5KP22CA are electrically and mechanically identical, with the primary difference being packaging format (Bulk versus Cut Tape). Both are manufactured by Littelfuse Inc.

The 5KP22CA-TP, manufactured by Micro Commercial Co, provides equivalent electrical performance across all specified parameters with identical clamping voltage, power rating, and operating temperature range. The package variant (R-6 versus P600) represents a mechanical difference in the axial lead configuration while maintaining through-hole mounting compatibility.

Selection between these parts should be based on packaging availability, supplier lead times, and procurement requirements rather than electrical performance considerations.

Frequently Asked Questions (FAQ)

Q: Can 5KP22CA be used as a direct replacement for SLD22-018-B?

A: Yes. Both parts share identical electrical specifications (22V reverse standoff, 35.5V clamping voltage, 5000W peak pulse power) and P600 axial through-hole packaging. The difference is packaging format: SLD22-018-B is supplied in Bulk, while 5KP22CA is supplied in Cut Tape.

Q: What is the difference between P600 and R-6 package variants?

A: Both are axial through-hole packages. P600 and R-6 represent different lead configurations within the axial package category. The 5KP22CA-TP uses R-6 packaging instead of P600. Mechanical compatibility depends on PCB design specifications for lead diameter and spacing.

Q: Are all three parts automotive qualified?

A: The SLD22-018-B carries AEC-Q101 automotive qualification. The 5KP22CA and 5KP22CA-TP specifications provided do not list automotive qualification status.

Q: Do all parts have the same peak pulse current rating?

A: The SLD22-018-B and 5KP22CA both specify 143.7A peak pulse current (10/1000µs). The 5KP22CA-TP peak pulse current is not specified in the provided data.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (Unlimited) for all parts.