5KP9.0CA-B Equivalent & Substitute Parts

Part Overview

The 5KP9.0CA-B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates across a wide temperature range and provides peak pulse power handling of 5000W. The part is currently active in production and fully compliant with RoHS3 and REACH regulations. Substitute parts may be required due to packaging availability, inventory constraints, or specific application requirements while maintaining equivalent electrical performance.

Substiute Parts

5KP9.0CA-B

Littelfuse Inc.In Stock: 8585KP9.0CA-B Datasheet

Current PartRFQ

5KP9.0CA

LittelfuseIn Stock: 43645KP9.0CA Datasheet

MFR RecommendedRFQ

SA9.0CA

Taiwan Semiconductor CorporationIn Stock: 8331SA9.0CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP9.0CA-B is determined by the following critical electrical parameters: reverse standoff voltage (9V), breakdown voltage minimum (10V), clamping voltage maximum (15.4V), and bidirectional channel configuration (1 channel). These parameters define the voltage protection window and must remain constant across any substitute part.

The substitute parts identified maintain identical electrical specifications for voltage protection characteristics. However, differences exist in current-handling capacity and package configuration, which affect application suitability and physical integration requirements.

Parameter Comparison

Engineering Selection Recommendations

5KP9.0CA (Littelfuse): This part is the direct electrical equivalent to the 5KP9.0CA-B, maintaining identical voltage protection specifications and peak pulse power rating of 5000W. The primary difference is packaging format: supplied in Tape & Reel (TR) configuration rather than Bulk. This substitute is suitable for applications requiring the same current-handling capacity (331.2A) and is recommended when TR packaging is acceptable for manufacturing processes.

SA9.0CA (Taiwan Semiconductor Corporation): This part maintains identical voltage protection characteristics (9V standoff, 15.4V clamping) but operates at reduced current capacity (34A peak pulse) and lower power dissipation (500W). The package format differs to DO-204AC (DO-15). This substitute is applicable only to applications where peak pulse current requirements do not exceed 34A and power dissipation remains below 500W. Physical package dimensions differ, requiring PCB layout verification.

All substitute parts maintain active product status and full RoHS3 and REACH compliance, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can SA9.0CA replace 5KP9.0CA-B in all applications?

A: No. While SA9.0CA maintains identical voltage protection parameters (9V standoff, 15.4V clamping), it is limited to 34A peak pulse current and 500W power dissipation compared to 331.2A and 5000W for the 5KP9.0CA-B. Substitution is valid only when application peak pulse current remains below 34A.

Q: What is the difference between 5KP9.0CA-B and 5KP9.0CA?

A: Both parts are electrically identical with matching voltage and current specifications. The difference is packaging: 5KP9.0CA-B is supplied in Bulk format, while 5KP9.0CA is supplied in Tape & Reel (TR) format. Both use the P600 axial package.

Q: Are there physical package differences between substitutes?

A: Yes. The 5KP9.0CA-B and 5KP9.0CA both use P600 axial package. The SA9.0CA uses DO-204AC (DO-15) axial package, which has different physical dimensions. PCB layout and mechanical clearance must be verified before substitution.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected, maintaining regulatory equivalence across substitution options.

Q: Which substitute should be selected for high-current transient protection?

A: The 5KP9.0CA is the appropriate choice, as it maintains the full 331.2A peak pulse current and 5000W power rating of the original 5KP9.0CA-B. The SA9.0CA is unsuitable for high-current applications due to its 34A limitation.