5KP26CA-B Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP26CA-B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates with a 26V reverse standoff voltage and provides 5000W peak pulse power dissipation capability. The part is currently in active production status with 860 units available in bulk packaging. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

5KP26CA-B

Littelfuse Inc.In Stock: 9385KP26CA-B Datasheet

Current PartRFQ

5KP26CA

Diotec SemiconductorIn Stock: 42065KP26CA Datasheet

MFR RecommendedRFQ

5KP26CA-TP

Micro Commercial CoIn Stock: 10955KP26CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP26CA-B are qualified based on the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Power - Peak Pulse: 5000W (5kW)
• Bidirectional Channels: 1
• Type: Zener
• Mounting Type: Through Hole
• Applications: General Purpose

Substitute parts maintain identical or equivalent electrical performance within the specified voltage and power ratings. Packaging format variations (Bulk, Tape & Reel, Cut Tape) and minor differences in peak pulse current specifications do not affect functional equivalence for general-purpose transient voltage suppression applications. All substitute parts retain active product status and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance, qualifying them for equivalent use in general-purpose transient voltage suppression circuits. The 5KP26CA (Diotec) and 5KP26CA-TP (Micro Commercial Co) are direct electrical equivalents to the 5KP26CA-B, with identical voltage ratings and power dissipation specifications.

Selection between these parts should be based on packaging requirements and inventory availability:

• 5KP26CA-B (Littelfuse): Bulk packaging, P600 case, 121.1A peak pulse current rating
• 5KP26CA (Diotec): Tape & Reel packaging, P600 case, 119A peak pulse current rating
• 5KP26CA-TP (Micro Commercial Co): Cut Tape packaging, R-6 case, peak pulse current not specified

The Diotec 5KP26CA offers the closest electrical match with marginally lower peak pulse current (119A vs 121.1A), which remains within acceptable tolerance for general-purpose applications. The Micro Commercial Co 5KP26CA-TP provides equivalent voltage and power ratings but uses an R-6 package variant instead of P600, requiring verification of mechanical fit in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the 5KP26CA (Diotec) substitute for the 5KP26CA-B in production designs?

A: Yes. Both parts share identical voltage ratings (26V standoff, 28.9V breakdown, 42.1V clamping) and power dissipation (5000W peak pulse). The 2.1A difference in peak pulse current (119A vs 121.1A) does not affect functional equivalence for general-purpose transient suppression applications.

Q: What is the difference between P600 and R-6 package formats?

A: Both are axial through-hole packages for TVS diodes. P600 and R-6 represent different physical case geometries. Mechanical compatibility must be verified against PCB pad spacing and component placement constraints before substituting 5KP26CA-TP for other variants.

Q: Are all three parts RoHS compliant?

A: Yes. The 5KP26CA-B, 5KP26CA, and 5KP26CA-TP are all ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: What is the operating temperature range difference between substitutes?

A: The 5KP26CA (Diotec) operates from -50°C to 175°C, while the 5KP26CA-B and 5KP26CA-TP operate from -55°C to 175°C. For applications requiring operation below -50°C, the Diotec part is not suitable.

Q: Can packaging format affect circuit performance?

A: Packaging format (Bulk, Tape & Reel, Cut Tape) does not affect electrical performance. However, physical case geometry (P600 vs R-6) may affect mechanical fit and PCB layout compatibility. Verify component dimensions against design specifications before substitution.