P6KE100 Equivalent & Substitute Parts

Part Overview

The P6KE100 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 600W peak pulse power rating and operates across a temperature range of -55°C to 175°C. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system designs and maintenance applications. Substitute parts must maintain compatibility across key electrical parameters including reverse standoff voltage, clamping voltage, and power dissipation characteristics while accommodating the through-hole DO-15 package format.

Substiute Parts

P6KE100

Littelfuse Inc.In Stock: 712P6KE100 Datasheet

Current PartRFQ

P6KE100A

Fairchild SemiconductorIn Stock: 18965P6KE100A Datasheet

DirectRFQ

SA85A

Taiwan Semiconductor CorporationIn Stock: 1219SA85A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE100 is determined by strict alignment across the following critical parameters:

• Unidirectional Channel Configuration: Must be 1 channel (single direction protection)
• Package Format: Must be DO-204AC / DO-15 through-hole axial configuration for mechanical and electrical compatibility
• Voltage - Reverse Standoff (Typ): Acceptable range 85V to 100V to maintain circuit protection thresholds
• Voltage - Clamping (Max) @ Ipp: Must not exceed 143.85V to prevent overvoltage stress on protected circuits
• Power - Peak Pulse: Minimum 500W to ensure adequate transient energy dissipation
• Operating Temperature Range: Must support -55°C minimum and preferably 150°C or higher
• Type: Zener diode construction for consistent suppression characteristics
• Applications: General Purpose designation confirming broad compatibility

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

P6KE100A (Fairchild Semiconductor): This substitute maintains the full 600W peak pulse power rating and identical package configuration. The reverse standoff voltage of 100V is within acceptable tolerance for general-purpose applications. Operating temperature maximum of 150°C is 25°C lower than the original part; this is acceptable for most standard industrial and commercial environments. Product status is active with established supply chain availability. RoHS compliance status is not specified in available documentation.

SA85A (Taiwan Semiconductor Corporation): This substitute provides the closest voltage matching to the original P6KE100, with a reverse standoff voltage of 85V and identical clamping voltage of 137V. Operating temperature range extends to 175°C, matching the original specification. Peak pulse power is rated at 500W, which is 100W lower than the original but remains adequate for general-purpose transient suppression. Product status is active with ROHS3 compliance confirmed. Packaging is specified as Tape & Reel format, suitable for automated assembly processes.

Both substitutes are electrically and mechanically compatible with the obsolete P6KE100 for general-purpose TVS applications in DO-15 through-hole configurations.

Frequently Asked Questions (FAQ)

Q: Can P6KE100A and SA85A be used interchangeably with P6KE100?

A: Both parts meet the core substitution criteria for the P6KE100 in general-purpose transient voltage suppression applications. Selection between them depends on specific circuit requirements regarding voltage standoff tolerance and operating temperature limits. P6KE100A maintains full 600W power rating; SA85A provides extended temperature range to 175°C.

Q: What is the significance of the voltage standoff difference between P6KE100A (100V) and SA85A (85V)?

A: Reverse standoff voltage determines the threshold at which the TVS diode begins conducting. The P6KE100 specifies 85.5V typical. P6KE100A at 100V provides higher voltage tolerance before activation, while SA85A at 85V matches the original specification more closely. Circuit design must account for this parameter when selecting between substitutes.

Q: Does the 500W power rating of SA85A versus 600W of P6KE100 affect compatibility?

A: SA85A's 500W peak pulse power rating remains within acceptable limits for general-purpose applications. The 100W reduction is acceptable provided circuit transient energy does not exceed this threshold. Applications requiring the full 600W dissipation capacity should specify P6KE100A.

Q: Are both substitutes available in the same DO-15 package format?

A: Yes. Both P6KE100A and SA85A are available in DO-204AC / DO-15 through-hole axial package configuration, ensuring mechanical and electrical compatibility with existing PCB designs and socket configurations.

Q: What is the impact of the 25°C lower maximum operating temperature of P6KE100A?

A: P6KE100A operates to 150°C maximum versus 175°C for the original P6KE100 and SA85A substitute. For applications operating within standard industrial temperature ranges (-55°C to 125°C ambient), this difference is not limiting. High-temperature applications above 150°C junction temperature should specify SA85A.

Q: Are there RoHS compliance differences between the substitutes?

A: P6KE100 and SA85A are both confirmed ROHS3 compliant. P6KE100A RoHS status is not specified in available documentation. Procurement specifications requiring RoHS certification should confirm compliance with the supplier before selection.