Equivalent & Substitute Parts for 5KP8.0C TVS Diode

Part Overview

The 5KP8.0C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features an 8V reverse standoff voltage rating and 5000W peak pulse power handling capability in a through-hole P600 axial package. The part is currently listed as obsolete, necessitating identification of active substitute components that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

5KP8.0C

Littelfuse Inc.In Stock: 10485KP8.0C Datasheet

Current PartRFQ

5KP8.0CA

Littelfuse Inc.In Stock: 41205KP8.0CA Datasheet

DirectRFQ

SA8.0CA

Taiwan Semiconductor CorporationIn Stock: 13804SA8.0CA Datasheet

MFR RecommendedRFQ

5KP8.0CE3/TR13

Microchip TechnologyIn Stock: 9055KP8.0CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP8.0C is determined by the following critical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 8V
• Voltage - Breakdown (Min): 8.42V minimum
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Factors:

• Mounting Type: Through Hole
• Power - Peak Pulse: 5000W or greater
• Voltage - Clamping (Max) @ Ipp: Within acceptable circuit design tolerance

The substitute parts listed below satisfy the primary matching criteria. Differences in clamping voltage, peak pulse current, and package form factor are noted for engineering evaluation based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

5KP8.0CA (Littelfuse Inc.): This direct Littelfuse substitute maintains identical package geometry (P600, Axial), power rating (5000W), and operating temperature range. The part is in active production status with higher inventory availability (4100 units). Clamping voltage is 13.6V versus the original 14.28V, representing a 4.8% reduction. Peak pulse current is specified at 375A. This part is recommended as the primary substitute for direct replacement in existing designs.

5KP8.0CE3/TR13 (Microchip Technology): This part maintains the P600 package, 5000W power rating, and operating temperature range. Clamping voltage is 15V, representing a 5.0% increase above the original specification. Peak pulse current is 333A. The part is in active production with moderate inventory (883 units). This substitute is suitable for applications where slightly higher clamping voltage is acceptable.

SA8.0CA (Taiwan Semiconductor Corporation): This part differs significantly in package form factor (DO-204AC/DO-15 versus P600) and power rating (500W versus 5000W). While voltage parameters match the 8V standoff requirement, the reduced power handling capability (500W) and different package geometry limit this substitute to lower-power applications only. Peak pulse current is 38A. This part is not recommended as a direct replacement for the 5KP8.0C in applications requiring 5000W power dissipation.

Frequently Asked Questions (FAQ)

Q: Can the 5KP8.0CA be used as a direct replacement for the 5KP8.0C?

A: Yes. The 5KP8.0CA maintains the same 8V reverse standoff voltage, P600 axial package, 5000W power rating, and operating temperature range. The clamping voltage difference (13.6V versus 14.28V) is within typical circuit design tolerance for general-purpose overvoltage protection applications.

Q: What is the primary difference between the 5KP8.0CA and 5KP8.0CE3/TR13?

A: Both parts maintain identical package and power ratings. The 5KP8.0CE3/TR13 has a higher clamping voltage (15V versus 13.6V) and slightly lower peak pulse current (333A versus 375A). Selection depends on whether the application circuit can tolerate the higher clamping voltage.

Q: Why is the SA8.0CA not recommended as a substitute?

A: The SA8.0CA uses a different package (DO-204AC/DO-15 instead of P600) and has significantly lower power handling (500W versus 5000W). It is suitable only for low-power applications and cannot replace the 5KP8.0C in circuits requiring 5000W transient suppression.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (5KP8.0CA, 5KP8.0CE3/TR13, and SA8.0CA) are ROHS3 compliant and meet the same environmental standards as the original 5KP8.0C.

Q: What is the impact of different peak pulse current ratings?

A: Peak pulse current (Ipp) indicates the maximum current the device can conduct during a transient event. The 5KP8.0CA (375A) and 5KP8.0CE3/TR13 (333A) both provide adequate current handling for the 5000W power rating. The SA8.0CA (38A) is limited by its lower power rating and is not suitable for high-energy transient suppression.

Q: Can I use the 5KP8.0CE3/TR13 if my circuit requires lower clamping voltage?

A: No. The 5KP8.0CE3/TR13 has a higher clamping voltage (15V) than the original 5KP8.0C (14.28V). If your circuit requires clamping voltage at or below 14.28V, use the 5KP8.0CA instead, which provides 13.6V clamping voltage.