5KP100 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP100 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. It features a 100V reverse standoff voltage rating, 5000W peak pulse power handling capability, and P600 axial through-hole packaging. The 5KP100 is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

5KP100

Littelfuse Inc.In Stock: 8725KP100 Datasheet

Current PartRFQ

5KP100A

Littelfuse Inc.In Stock: 42085KP100A Datasheet

DirectRFQ

5KP100E3/TR13

Microchip TechnologyIn Stock: 9825KP100E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP100 is determined by strict equivalence across the following electrical and mechanical parameters:

• Reverse standoff voltage: 100V nominal
• Unidirectional topology: Single channel Zener TVS
• Peak pulse power rating: 5000W
• Package type: P600 axial through-hole
• Operating temperature range: -55°C to 175°C
• RoHS3 compliance

Substitute parts must maintain these core specifications. Variations in clamping voltage, breakdown voltage minimum, and peak pulse current are permissible within the defined electrical envelope, provided the part functions within the same protection circuit application class.

Parameter Comparison

Engineering Selection Recommendations

Both 5KP100A and 5KP100E3/TR13 are qualified substitutes for the obsolete 5KP100. Selection between these alternatives is based on the following criteria:

5KP100A (Littelfuse Inc.): This part maintains manufacturer continuity with the original 5KP100 and carries active product status. It is supplied in cut tape packaging and demonstrates the lowest clamping voltage (162V) among the three options, providing the tightest voltage regulation margin.

5KP100E3/TR13 (Microchip Technology): This part is supplied in tape and reel packaging, suitable for automated assembly processes. It exhibits a higher clamping voltage (179V) and lower peak pulse current (27.9A) compared to the 5KP100A, making it appropriate for applications with less stringent voltage regulation requirements.

Both parts satisfy RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility for new production designs.

Frequently Asked Questions (FAQ)

Q: Can the 5KP100A and 5KP100E3/TR13 be used interchangeably in the same circuit?

A: Both parts meet the core electrical and mechanical specifications of the 5KP100. However, the difference in clamping voltage (162V versus 179V) may affect circuit performance depending on the protected device's voltage tolerance. Circuit validation is necessary to confirm compatibility with the specific application's overvoltage threshold.

Q: What is the significance of the packaging difference between cut tape and tape & reel?

A: Cut tape (5KP100A) is suitable for manual assembly and small-volume production. Tape & reel (5KP100E3/TR13) is optimized for high-volume automated pick-and-place assembly. Both formats contain identical electrical components in P600 axial through-hole packages.

Q: Are there any compliance differences between the substitute parts?

A: Both 5KP100A and 5KP100E3/TR13 are ROHS3 compliant and REACH unaffected. No compliance barriers exist for either substitute in regulated markets.

Q: Why does the 5KP100 show no peak pulse current specification?

A: The original 5KP100 datasheet does not provide peak pulse current (Ipp) as a published parameter. The substitute parts (5KP100A at 31.5A and 5KP100E3/TR13 at 27.9A) provide this specification for design reference, though both maintain the same 5000W peak pulse power rating.