Equivalent & Substitute Parts for 3KP200-B TVS Diode

Part Overview

The 3KP200-B is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 200V reverse standoff voltage rating and P600 axial through-hole packaging. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

3KP200-B

Littelfuse Inc.In Stock: 7693KP200-B Datasheet

Current PartRFQ

5KP200A-B

Littelfuse Inc.In Stock: 7855KP200A-B Datasheet

DirectRFQ

15KPA200AE3/TR13

Microchip TechnologyIn Stock: 101015KPA200AE3/TR13 Datasheet

MFR RecommendedRFQ

5KP200A-TP

Micro Commercial CoIn Stock: 8075KP200A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3KP200-B is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 200V is mandatory
• Package Compatibility: P600 axial through-hole mounting required for direct mechanical and electrical interchange
• Zener Type: Unidirectional configuration with single channel
• Operating Temperature: -55°C to 175°C range
• RoHS Compliance: ROHS3 compliant status

The substitute parts identified maintain these core electrical and mechanical specifications while offering variations in peak pulse current handling and power dissipation capabilities. All candidates are active or available products from established manufacturers, addressing the obsolescence of the original 3KP200-B.

Parameter Comparison

Engineering Selection Recommendations

5KP200A-B (Littelfuse Inc.) is the primary substitute for direct replacement. This part maintains identical voltage ratings, P600 axial package geometry, and operating temperature specifications. The higher peak pulse current (15.5A vs. 9.1A) and increased power dissipation (5000W vs. 3000W) provide enhanced transient protection capability. Active product status ensures long-term availability and supply chain continuity. Bulk packaging matches the original procurement format.

15KPA200AE3/TR13 (Microchip Technology) serves as an alternative for applications requiring superior transient energy absorption. This part delivers 47.3A peak pulse current and 15000W power dissipation, substantially exceeding the original specification. P600 axial package compatibility is maintained. Tape & Reel packaging is suitable for automated assembly environments. Active status and REACH compliance support modern manufacturing requirements.

5KP200A-TP (Micro Commercial Co) is compatible with the voltage and power specifications but uses R-6 axial packaging instead of P600. This package variation may require mechanical redesign of board layouts or component mounting fixtures. Tape & Reel format is optimized for high-volume production. Selection of this part requires confirmation that R-6 package dimensions are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can 5KP200A-B directly replace 3KP200-B without circuit modification?

A: Yes. The 5KP200A-B maintains identical voltage ratings (200V reverse standoff), breakdown voltage compatibility, and P600 axial through-hole package. No circuit redesign is required. The increased current and power ratings provide equivalent or superior protection.

Q: What is the difference between P600 and R-6 axial packages?

A: Both are through-hole axial packages for TVS diodes, but P600 and R-6 have different physical dimensions and lead spacing. Direct mechanical interchange is not possible without board layout modification. Verify package dimensions against your PCB design before selecting 5KP200A-TP.

Q: Why does 15KPA200AE3/TR13 have higher peak pulse current than the original part?

A: The 15KPA200AE3/TR13 is rated for 47.3A peak pulse current and 15000W power dissipation, compared to 9.1A and 3000W for the 3KP200-B. This reflects a higher energy absorption capability within the same voltage class. The part remains electrically compatible and provides enhanced transient suppression margin.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitutes—5KP200A-B, 5KP200A-TP, and 15KPA200AE3/TR13—carry ROHS3 compliance certification, matching the original 3KP200-B specification.

Q: What is the significance of "Active" product status for the substitute parts?

A: Active status indicates the part is currently manufactured and supported by the supplier, ensuring availability for procurement and technical support. The 3KP200-B is obsolete, meaning production has ended and future availability cannot be guaranteed. Selection of active alternatives mitigates supply chain risk.

Q: Can I use 15KPA200AE3/TR13 in a space-constrained application?

A: The 15KPA200AE3/TR13 uses P600 axial packaging, identical to the original 3KP200-B. Physical dimensions are compatible with existing board layouts. However, confirm that the higher power dissipation (15000W vs. 3000W) does not create thermal management concerns in your specific application environment.