5KP64 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP64 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 64V reverse standoff voltage rating and 5000W peak pulse power handling capability in a through-hole P600 axial package. The 5KP64 is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

5KP64

Littelfuse Inc.In Stock: 7705KP64 Datasheet

Current PartRFQ

5KP64A

Diotec SemiconductorIn Stock: 384715KP64A Datasheet

DirectRFQ

5KP64E3/TR13

Microchip TechnologyIn Stock: 10105KP64E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP64 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 64V (exact match required)
• Power - Peak Pulse: 5000W (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Package / Case: P600, Axial (exact match required)
• Mounting Type: Through Hole (exact match required)
• Type: Zener (exact match required)

Allowable Variation Parameters:

• Voltage - Breakdown (Min): Range 67.37V to 71.1V (within industry tolerance for 64V standoff rating)
• Voltage - Clamping (Max) @ Ipp: Range 103V to 114V (acceptable variation for TVS clamping performance)
• Current - Peak Pulse (10/1000µs): 43.9A to 49A (within operational specification)
• Operating Temperature Range: -50°C to -55°C minimum; 175°C maximum (acceptable industrial range)

All identified substitute parts maintain identical voltage class, power rating, package configuration, and unidirectional topology, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

5KP64A (Diotec Semiconductor): This part is an active product with identical electrical ratings and package configuration. The clamping voltage of 103V is lower than the original 108.15V specification, providing more aggressive transient suppression. The operating temperature minimum of -50°C is 5°C higher than the original specification; this is acceptable for most general-purpose applications operating within standard industrial temperature ranges. RoHS compliance status is not applicable for this manufacturer variant. This substitute is suitable for applications where supply continuity is prioritized and the slightly lower clamping voltage is acceptable.

5KP64E3/TR13 (Microchip Technology): This part is an active product with ROHS3 compliance matching the original specification. The operating temperature range of -55°C to 175°C is identical to the original 5KP64. The clamping voltage of 114V is higher than the original 108.15V specification, providing less aggressive transient suppression but maintaining adequate protection margins. This part is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. This substitute is recommended for applications requiring full compliance documentation and automated production workflows.

Both substitutes maintain the critical 64V standoff voltage, 5000W power rating, P600 axial package, and unidirectional topology required for direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can the 5KP64A and 5KP64E3/TR13 be used interchangeably with the original 5KP64?

A: Both parts are functionally equivalent for general-purpose transient voltage suppression applications. They maintain identical standoff voltage (64V), peak pulse power (5000W), package configuration (P600 axial), and unidirectional topology. Differences in clamping voltage (103V vs. 108.15V vs. 114V) fall within acceptable operational variation for TVS diodes and do not prevent interchangeability in circuit design.

Q: What is the significance of the clamping voltage difference between these parts?

A: Clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. The 5KP64A clamps at 103V (lower), the original at 108.15V (nominal), and the 5KP64E3/TR13 at 114V (higher). Lower clamping voltage provides more aggressive protection but may increase component stress. Higher clamping voltage reduces component stress but allows slightly higher transient voltages. All three values are within acceptable ranges for 64V standoff-rated TVS diodes.

Q: Does the operating temperature range difference affect part selection?

A: The 5KP64A has a minimum operating temperature of -50°C compared to -55°C for the original and Microchip parts. For applications operating above -50°C, this difference is not significant. For applications requiring operation below -50°C, the 5KP64E3/TR13 or original specification should be maintained.

Q: What is the difference between bulk and Tape & Reel packaging?

A: The 5KP64E3/TR13 is supplied in Tape & Reel (TR) format, optimized for automated pick-and-place assembly. The 5KP64A is supplied in standard bulk packaging. Tape & Reel packaging reduces manual handling and is preferred for high-volume production. Bulk packaging is suitable for manual assembly or lower-volume applications. Both formats contain identical components.

Q: Are there compliance or certification differences between these parts?

A: The original 5KP64 and 5KP64E3/TR13 are both ROHS3 compliant. The 5KP64A does not specify RoHS compliance status. For applications requiring RoHS certification documentation, the 5KP64E3/TR13 is the recommended substitute. Both parts carry EAR99 export classification.

Q: Can I mix these substitute parts in the same production batch?

A: Yes. All three parts meet the same electrical and mechanical specifications for the 64V, 5000W TVS diode application. Mixing parts from different manufacturers in the same batch is acceptable from an engineering standpoint, though procurement and quality control processes should document the substitution for traceability.