5KP9.0A-E3/51 Equivalent & Substitute Parts

Part Overview

The 5KP9.0A-E3/51 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose transient protection applications. This component features a 9V reverse standoff voltage, 15.4V maximum clamping voltage, and 5000W peak pulse power rating in a through-hole P600 axial package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new designs.

Substiute Parts

5KP9.0A-E3/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 7095KP9.0A-E3/51 Datasheet

Current PartRFQ

5KP9.0AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 8645KP9.0AHE3/54 Datasheet

DirectRFQ

5KP9.0A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 84315KP9.0A-E3/54 Datasheet

MFR RecommendedRFQ

5KP9.0A-TP

Micro Commercial CoIn Stock: 63685KP9.0A-TP Datasheet

DirectRFQ

5KP9.0AE3/TR13

Microchip TechnologyIn Stock: 9165KP9.0AE3/TR13 Datasheet

DirectRFQ

5KP9.0A

LittelfuseIn Stock: 33145KP9.0A Datasheet

MFR RecommendedRFQ

5KP9.0A-B

Littelfuse Inc.In Stock: 12025KP9.0A-B Datasheet

MFR RecommendedRFQ

5KP9.0A-HR

Littelfuse Inc.In Stock: 10445KP9.0A-HR Datasheet

MFR RecommendedRFQ

5KP9.0A-HRA

Littelfuse Inc.In Stock: 7025KP9.0A-HRA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP9.0A-E3/51 is determined by strict equivalence across the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 9V, breakdown minimum of 10V, and clamping maximum of 15.4V
• Current Handling: Peak pulse current of 325A at 10/1000µs pulse width
• Power Dissipation: 5000W peak pulse power rating
• Package Configuration: P600 axial through-hole package
• Diode Type: Unidirectional Zener TVS diode
• Environmental Compliance: ROHS3 compliance and MSL 1 rating

Substitute parts are grouped by manufacturer and packaging format while maintaining identical electrical performance specifications. Packaging variations (Tape & Reel, Cut Tape, Bulk) do not affect electrical equivalence but influence procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 5KP9.0A-E3/54 (Vishay General Semiconductor - Diodes Division)

This part maintains direct manufacturer continuity with the obsolete 5KP9.0A-E3/51, identical electrical specifications, and active product status. ROHS3 compliance and MSL 1 rating are preserved. Tape & Reel packaging supports automated assembly workflows with highest available inventory (8400 Pcs).

Secondary Recommendations:

5KP9.0AHE3/54 (Vishay General Semiconductor - Diodes Division) - Active status with automotive-grade qualification (AEC-Q101) and identical electrical performance. Suitable for applications requiring automotive-level reliability.

5KP9.0AE3/TR13 (Microchip Technology) - Active status with identical electrical specifications and P600 package. Tape & Reel format supports production environments.

5KP9.0A (Littelfuse) - Active status with marginally higher peak pulse current (331.2A vs. 325A), providing enhanced transient protection margin. Available in Cut Tape format.

5KP9.0A-HR and 5KP9.0A-HRA (Littelfuse Inc.) - Active status with 5KP-HR and 5KP-HRA series designation. Peak pulse current of 331.2A exceeds original specification. Tape & Reel packaging available.

Package Consideration: 5KP9.0A-TP (Micro Commercial Co) uses R-6 axial package instead of P600. Mechanical compatibility with existing PCB layouts must be verified before selection.

Frequently Asked Questions (FAQ)

Q: Can I use 5KP9.0A-TP as a direct replacement for 5KP9.0A-E3/51?

A: Electrical specifications are equivalent (9V standoff, 15.4V clamping, 5000W power). However, the R-6 axial package differs from the P600 package. Physical dimensions and lead spacing must be verified against your PCB layout before substitution.

Q: What is the difference between Littelfuse 5KP9.0A variants (standard, -B, -HR, -HRA)?

A: All Littelfuse variants maintain identical voltage ratings and 5000W power dissipation. Peak pulse current is 331.2A across all variants, exceeding the original 325A specification. Packaging formats differ: standard and -B are bulk/cut tape, while -HR and -HRA are tape & reel formats. The -HR and -HRA designations indicate the 5KP-HR and 5KP-HRA series respectively.

Q: Why does the 5KP9.0A-TP show no peak pulse current specification?

A: The provided data does not include peak pulse current for this part. Verification with the manufacturer datasheet is necessary to confirm 325A or equivalent current handling capability before selection.

Q: Is the Littelfuse 5KP9.0A with 331.2A peak pulse current a suitable upgrade?

A: Yes. The 331.2A rating exceeds the original 325A specification while maintaining all voltage parameters and 5000W power rating. This provides enhanced transient suppression capability within the same package footprint.

Q: What packaging format should I select for production assembly?

A: Tape & Reel (TR) format is standard for automated pick-and-place assembly. Cut Tape (CT) and Bulk formats are suitable for manual assembly or lower-volume applications. 5KP9.0A-E3/54 offers the highest inventory in Tape & Reel format (8400 Pcs).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original 5KP9.0A-E3/51 specifications.