Littelfuse 5KP8.0A Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The Littelfuse 5KP8.0A is an active, unidirectional Zener-type transient voltage suppressor (TVS) diode designed for general-purpose overvoltage protection applications. This through-hole component operates across an industrial temperature range of -55°C to 175°C and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

5KP8.0A

Littelfuse Inc.In Stock: 33865KP8.0A Datasheet

Current PartRFQ

SA8.0A

Taiwan Semiconductor CorporationIn Stock: 300339SA8.0A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by matching the following critical electrical parameters:

• Voltage - Reverse Standoff (Typ): 8V
• Voltage - Breakdown (Min): 8.89V
• Voltage - Clamping (Max) @ Ipp: 13.6V
• Unidirectional channel configuration: 1 channel
• Type: Zener
• Applications: General Purpose
• RoHS Status: ROHS3 Compliant
• Operating Temperature Range: -55°C to 175°C

The Taiwan Semiconductor Corporation SA8.0A meets all voltage and thermal specifications. However, the Current - Peak Pulse (10/1000µs) rating differs: the SA8.0A is rated at 38A compared to the 5KP8.0A at 375A, resulting in a proportionally lower Power - Peak Pulse rating of 500W versus 5000W. This difference reflects distinct application envelopes within the 8V TVS category.

Parameter Comparison

Engineering Selection Recommendations

Both the 5KP8.0A and SA8.0A are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection between these parts depends on application-specific power dissipation requirements. The 5KP8.0A, with its 5000W peak pulse power rating and 375A peak pulse current, is suited for high-energy transient suppression. The SA8.0A, rated at 500W peak pulse power and 38A peak pulse current, addresses lower-energy protection scenarios. Both maintain identical voltage clamping characteristics (13.6V maximum) and operate across the same temperature range (-55°C to 175°C). Package differences (P600 versus DO-204AC) and packaging formats (Cut Tape versus Tape & Reel) are mechanical considerations that do not affect electrical substitution eligibility.

Frequently Asked Questions (FAQ)

Q: Can the SA8.0A replace the 5KP8.0A in all applications?

A: The SA8.0A matches the voltage specifications (8V standoff, 8.89V breakdown, 13.6V clamping) but has significantly lower current and power ratings (38A and 500W versus 375A and 5000W). Substitution is valid only for applications where peak pulse energy does not exceed 500W.

Q: What is the significance of the different package types (P600 versus DO-204AC)?

A: Both are through-hole axial packages. P600 and DO-204AC (DO-15) are distinct mechanical form factors. Physical board layout and PCB hole spacing must accommodate the selected package. Electrical performance is independent of package type when voltage and current ratings are matched.

Q: Are both parts suitable for power line protection?

A: No. Both the 5KP8.0A and SA8.0A are designated for general-purpose applications, not power line protection. Power line protection applications require components specifically rated and certified for that use.

Q: Do packaging format differences (Cut Tape versus Tape & Reel) affect electrical performance?

A: No. Cut Tape and Tape & Reel are supply chain and handling formats only. Electrical characteristics and performance are identical regardless of packaging format.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Both carry ECCN classification EAR99 and HTSUS code 8541.10.0080.