3KP110CA-B Equivalent & Substitute Parts

Part Overview

The 3KP110CA-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This bidirectional zener diode features a 110V reverse standoff voltage and 177V maximum clamping voltage, with a peak pulse current rating of 16.9A and 3000W peak pulse power dissipation capability. The component is mounted through-hole in a P600 axial package.

The 3KP110CA-B is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

3KP110CA-B

Littelfuse Inc.In Stock: 10293KP110CA-B Datasheet

Current PartRFQ

5KP110CA-B

Littelfuse Inc.In Stock: 11255KP110CA-B Datasheet

DirectRFQ

3KP110CA-TP

Micro Commercial CoIn Stock: 11143KP110CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3KP110CA-B is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 110V
• Voltage - Breakdown (Min): 122V
• Voltage - Clamping (Max) @ Ipp: 177V
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Type: Zener

Substitute parts must maintain identical or superior electrical performance within these parameters. Mechanical compatibility is determined by package type and form factor. The following parts meet substitution criteria:

5KP110CA-B (Littelfuse Inc.): Maintains all critical voltage parameters and operating temperature range. Offers higher peak pulse current (28.8A) and increased power dissipation (5000W), providing enhanced transient protection capability. Active product status ensures ongoing availability.

3KP110CA-TP (Micro Commercial Co): Maintains all critical voltage parameters and operating temperature range with identical peak pulse current (16.9A) and power dissipation (3000W). Differs in package designation (R-6 vs. P600) but maintains through-hole axial form factor. Active product status ensures supply continuity.

Parameter Comparison

Engineering Selection Recommendations

5KP110CA-B is the primary substitute for new designs and production continuity. This part maintains identical voltage specifications and operating temperature range while providing enhanced current and power handling capabilities (28.8A peak pulse current, 5000W peak pulse power). The active product status from Littelfuse Inc. ensures long-term supply availability and technical support. ROHS3 compliance is maintained.

3KP110CA-TP serves as an electrical equivalent with matched current and power ratings (16.9A, 3000W). Manufactured by Micro Commercial Co with active product status, this part provides an alternative source for the same electrical performance envelope. Package designation differs (R-6 vs. P600), though both maintain through-hole axial form factor compatibility. This option is suitable when identical electrical performance is required and package variation is acceptable within mechanical constraints.

Frequently Asked Questions (FAQ)

Q: Can 5KP110CA-B replace 3KP110CA-B in existing designs?

A: Yes. The 5KP110CA-B maintains all critical voltage parameters (110V standoff, 122V breakdown, 177V clamping) and operating temperature range (-55°C to 175°C). The higher peak pulse current (28.8A vs. 16.9A) and power dissipation (5000W vs. 3000W) provide enhanced protection capability. Through-hole P600 axial package compatibility is identical.

Q: What is the difference between 3KP110CA-TP and 3KP110CA-B?

A: Both parts share identical electrical specifications: 110V standoff voltage, 122V breakdown voltage, 177V clamping voltage, 16.9A peak pulse current, and 3000W power dissipation. The primary difference is manufacturer (Micro Commercial Co vs. Littelfuse Inc.) and package designation (R-6 vs. P600). Both maintain through-hole axial form factor. The 3KP110CA-TP has active product status, ensuring supply continuity.

Q: Are there package compatibility concerns when substituting these parts?

A: The 5KP110CA-B uses identical P600 axial package as the original 3KP110CA-B. The 3KP110CA-TP uses R-6 axial package designation. Both maintain through-hole mounting and axial form factor. Physical dimensions and lead spacing should be verified against PCB layout requirements before implementation.

Q: Which substitute should be selected for new production?

A: For new production, 5KP110CA-B is recommended due to active product status from the original manufacturer (Littelfuse Inc.), enhanced performance specifications, and assured long-term availability. The 3KP110CA-TP is suitable as a secondary option when supply constraints or design requirements necessitate an alternative source.

Q: Are compliance certifications maintained across all substitute parts?

A: Both 5KP110CA-B and 3KP110CA-B maintain ROHS3 compliance. The 3KP110CA-TP RoHS status is not specified in available documentation. Compliance verification should be confirmed with the manufacturer or authorized distributor before implementation in regulated applications.