SLD17-018-B Equivalent & Substitute Parts

Part Overview

The SLD17-018-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for transient overvoltage protection in electronic circuits. This bidirectional zener diode operates with a 17V reverse standoff voltage and provides peak pulse power dissipation of 5000W, making it suitable for general-purpose surge suppression applications. The part is Active status and carries automotive-grade qualification (AEC-Q101), ensuring reliability in demanding environments. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Substiute Parts

SLD17-018-B

Littelfuse Inc.In Stock: 1137SLD17-018-B Datasheet

Current PartRFQ

5KP17CA

Littelfuse Inc.In Stock: 12065KP17CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLD17-018-B are identified based on electrical and mechanical parameter equivalence. The critical parameters that determine substitutability are:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Breakdown (Min): 18.9V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 184.8A
• Power - Peak Pulse: 5000W (5kW)
• Bidirectional Channels: 1
• Package / Case: P600, Axial
• Mounting Type: Through Hole

The 5KP17CA is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications (17V standoff, 27.6V clamping, 184.8A peak pulse, 5000W peak power) and mechanical compatibility (P600 axial through-hole package). Both parts are manufactured by Littelfuse Inc., are Active status, carry ROHS3 compliance, and operate across the same temperature range (-55°C ~ 175°C). The primary difference is packaging format: SLD17-018-B is supplied in Bulk, while 5KP17CA is supplied in Cut Tape (CT).

Parameter Comparison

Engineering Selection Recommendations

The 5KP17CA is the direct equivalent substitute for the SLD17-018-B. Both parts are manufactured by Littelfuse Inc., maintain Active product status, and carry identical electrical and thermal specifications. Selection between these parts is determined by packaging and procurement requirements rather than functional performance.

Use SLD17-018-B when bulk packaging is required for high-volume assembly or inventory consolidation. Use 5KP17CA when cut-tape packaging is preferred for automated pick-and-place assembly or when tape-and-reel format reduces handling and waste.

Both parts satisfy ROHS3 compliance and AEC-Q101 automotive qualification requirements. No functional or reliability differences exist between these parts when applied within their specified electrical and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the 5KP17CA be used as a direct replacement for the SLD17-018-B?

A: Yes. The 5KP17CA is electrically and mechanically equivalent to the SLD17-018-B. Both parts have identical voltage ratings (17V standoff, 27.6V clamping), peak pulse current (184.8A), power dissipation (5000W), operating temperature range (-55°C ~ 175°C), and P600 axial through-hole package. The only difference is packaging format (Bulk versus Cut Tape).

Q: What are the key parameters that determine substitutability for this TVS diode?

A: Substitutability is determined by: reverse standoff voltage (17V), breakdown voltage (18.9V minimum), clamping voltage (27.6V maximum at peak pulse current), peak pulse current rating (184.8A), peak pulse power (5000W), bidirectional channel configuration (1 channel), package type (P600 axial), and mounting method (through-hole). All substitute parts must match these specifications exactly.

Q: Are there any compliance or qualification differences between the SLD17-018-B and 5KP17CA?

A: No. Both parts are ROHS3 compliant, carry AEC-Q101 automotive qualification, have MSL rating of 1 (Unlimited), and are manufactured by Littelfuse Inc. Compliance and qualification status are identical.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (Bulk versus Cut Tape) affects only procurement, handling, and assembly processes. Electrical performance, thermal characteristics, and reliability are identical between the two parts.

Q: What is the operating temperature range for these parts?

A: Both the SLD17-018-B and 5KP17CA operate across a junction temperature range of -55°C to 175°C (TJ), suitable for automotive and industrial applications requiring wide temperature performance.