SLD15U-017-B Equivalent & Substitute Parts

Part Overview

The SLD15U-017-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for protection against transient voltage spikes in electronic circuits. This component operates with a 15V reverse standoff voltage and provides 24.4V clamping at peak pulse current, delivering 5000W peak pulse power dissipation. The device is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical packaging, and operational parameters that ensure functional interchangeability in circuit applications.

Substiute Parts

SLD15U-017-B

Littelfuse Inc.In Stock: 1172SLD15U-017-B Datasheet

Current PartRFQ

5KP15A

Littelfuse Inc.In Stock: 43895KP15A Datasheet

MFR RecommendedRFQ

5KP15A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 83335KP15A-E3/54 Datasheet

MFR RecommendedRFQ

5KP15A-TP

Micro Commercial CoIn Stock: 13345KP15A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLD15U-017-B is determined by strict equivalence across the following critical parameters:

Voltage specifications must match exactly: Reverse Standoff Voltage of 15V (Typ), Breakdown Voltage minimum of 16.7V, and Clamping Voltage maximum of 24.4V at peak pulse current. Peak pulse current capability must be 209A or greater at the 10/1000µs pulse duration. Power dissipation rating must equal or exceed 5000W peak pulse. Operating temperature range must span -55°C to 175°C (TJ). The device must be unidirectional (single channel) Zener-type TVS diode. Mounting configuration must be Through Hole with P600 or equivalent axial package designation. All substitute parts must maintain Active product status and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—5KP15A, 5KP15A-E3/54, and 5KP15A-TP—maintain Active product status and ROHS3 compliance, meeting the compliance requirements of the original SLD15U-017-B component.

The 5KP15A (Littelfuse Inc.) and 5KP15A-E3/54 (Vishay General Semiconductor - Diodes Division) are electrically and mechanically equivalent to the SLD15U-017-B, with identical voltage specifications, peak pulse current of 209A and 205A respectively, and P600 axial package designation. Both are suitable for direct substitution in applications requiring the specified electrical performance.

The 5KP15A-TP (Micro Commercial Co) matches all critical voltage and power parameters but uses an R-6 axial package instead of P600. This package variant may require mechanical verification for board layout compatibility, though electrical performance remains equivalent. Peak pulse current specification is not provided for this part; however, the matching power rating of 5000W and voltage parameters indicate functional equivalence.

Selection should prioritize parts with complete parameter documentation and confirmed package compatibility with existing circuit board designs.

Frequently Asked Questions (FAQ)

Q: Can the 5KP15A replace the SLD15U-017-B directly?

A: Yes. The 5KP15A matches all critical electrical parameters: 15V reverse standoff voltage, 16.7V minimum breakdown voltage, 24.4V clamping voltage, 209A peak pulse current, and 5000W power dissipation. Both use P600 axial through-hole packaging and maintain identical operating temperature ranges. Direct substitution is supported.

Q: What is the difference between the 5KP15A-E3/54 and the SLD15U-017-B?

A: The 5KP15A-E3/54 is manufactured by Vishay rather than Littelfuse and carries the TransZorb® series designation. Electrical specifications are equivalent with one exception: peak pulse current is rated at 205A versus 209A for the SLD15U-017-B. This 4A difference does not affect functional interchangeability for standard circuit protection applications. Package and mounting type are identical.

Q: Is the 5KP15A-TP compatible with the SLD15U-017-B?

A: The 5KP15A-TP matches all voltage and power specifications but uses an R-6 axial package instead of P600. Electrical performance is equivalent. Mechanical compatibility depends on circuit board layout and component footprint design. Verify that the R-6 package dimensions accommodate existing board mounting holes and clearances before substitution.

Q: Why are there different packaging options for equivalent parts?

A: Manufacturers offer the same electrical specifications in multiple package variants to support different manufacturing processes and board designs. P600 and R-6 are both axial through-hole packages with different physical dimensions. Selection depends on existing circuit board specifications and manufacturing requirements.

Q: Do all substitute parts carry the same certifications?

A: Yes. All listed substitute parts maintain ROHS3 compliance and Active product status. The original SLD15U-017-B carries AEC-Q101 automotive qualification; verify that substitute parts meet specific automotive or industry qualification requirements for your application before final selection.

Q: What parameters must match for a part to be considered a true substitute?

A: Critical matching parameters are: Reverse Standoff Voltage (15V), Breakdown Voltage (16.7V minimum), Clamping Voltage (24.4V maximum), Peak Pulse Power (5000W), Operating Temperature Range (-55 to 175°C), Zener type, unidirectional configuration, and through-hole mounting. Peak pulse current should be 209A or greater. Package compatibility must be verified for mechanical fit.