15KP28C Equivalent & Substitute Parts

Part Overview

The 15KP28C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This component features a 28V reverse standoff voltage with a maximum clamping voltage of 49.88V at peak pulse current, rated for 15kW peak pulse power dissipation. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements.

Substiute Parts

15KP28C

Littelfuse Inc.In Stock: 96515KP28C Datasheet

Current PartRFQ

15KP28CA-TP

Micro Commercial CoIn Stock: 109215KP28CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 15KP28C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 28V
• Voltage - Clamping (Max) @ Ipp: Must be within acceptable operating range for the application
• Power - Peak Pulse: 15000W (15kW)
• Type: Zener diode, bidirectional, single channel
• Operating Temperature Range: -55°C ~ 175°C (TJ)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: Axial configuration (P600 or equivalent R-6 package)

Compliance Criteria:

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 15KP28CA-TP meets all critical electrical parameters with identical reverse standoff voltage (28V) and equivalent peak pulse power rating (15kW). The clamping voltage of 47.5V is within acceptable tolerance for general-purpose TVS applications. Both parts maintain identical operating temperature ranges and RoHS3 compliance. The primary difference is packaging format (P600 vs. R-6 axial) and product status (obsolete vs. active).

Parameter Comparison

Engineering Selection Recommendations

The 15KP28CA-TP is the manufacturer-recommended substitute for the obsolete 15KP28C. Both components maintain identical reverse standoff voltage (28V) and peak pulse power rating (15kW), ensuring functional equivalence in general-purpose TVS applications. The substitute part is currently in active production status, providing supply chain continuity and long-term availability.

Both parts satisfy ROHS3 compliance requirements and maintain unlimited moisture sensitivity classification (MSL 1), supporting deployment in standard manufacturing environments without additional moisture control measures.

The primary consideration for implementation is package compatibility. The 15KP28C uses P600 axial packaging, while the 15KP28CA-TP uses R-6 axial packaging. Both are through-hole axial configurations suitable for PCB mounting; however, physical dimensions may differ. Verification of PCB footprint compatibility is necessary prior to design implementation.

Frequently Asked Questions (FAQ)

Q: Can the 15KP28CA-TP be used as a direct replacement for the 15KP28C?

A: The 15KP28CA-TP is electrically equivalent to the 15KP28C for general-purpose TVS applications, with identical reverse standoff voltage (28V) and peak pulse power rating (15kW). Both components operate across the same temperature range (-55°C to 175°C). PCB footprint compatibility must be confirmed, as the parts use different axial package designations (P600 vs. R-6).

Q: What is the difference between the clamping voltages of these parts?

A: The 15KP28C has a maximum clamping voltage of 49.88V, while the 15KP28CA-TP has a maximum clamping voltage of 47.5V. Both values are within acceptable operating parameters for general-purpose transient suppression. The lower clamping voltage of the substitute part provides slightly improved voltage regulation characteristics.

Q: Are both parts RoHS compliant?

A: Yes, both the 15KP28C and 15KP28CA-TP are ROHS3 compliant and carry unlimited moisture sensitivity classification (MSL 1), meeting standard environmental and manufacturing requirements.

Q: Why is the 15KP28C listed as obsolete?

A: The 15KP28C is classified as obsolete by Littelfuse Inc. The 15KP28CA-TP, manufactured by Micro Commercial Co, is the active equivalent component recommended for new designs and production applications.

Q: What packaging formats are available?

A: The 15KP28C is supplied in bulk packaging with P600 axial case designation. The 15KP28CA-TP is supplied in Tape & Reel (TR) format with R-6 axial case designation, suitable for automated assembly processes.

Q: Are the operating temperature ranges identical?

A: Yes, both components operate across the identical temperature range of -55°C to 175°C (junction temperature), ensuring thermal compatibility in equivalent applications.