P4KE11C-B Equivalent & Substitute Parts

Part Overview

The P4KE11C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This component features a 9.4V reverse standoff voltage with a 16.38V maximum clamping voltage and 26.3A peak pulse current capability in a through-hole DO-204AL (DO-41) package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued circuit protection functionality.

Substiute Parts

P4KE11C-B

LittelfuseIn Stock: 866P4KE11C-B Datasheet

Current PartRFQ

P4KE11CA

Taiwan Semiconductor CorporationIn Stock: 940P4KE11CA Datasheet

DirectRFQ

P4KE11CA-B

LittelfuseIn Stock: 865P4KE11CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE11C-B are identified based on strict electrical and mechanical parameter alignment within the P4KE series. The substitution criteria are:

• Identical reverse standoff voltage: 9.4V (Typ)
• Identical package type: DO-204AL (DO-41) through-hole axial configuration
• Identical series designation: P4KE
• Identical bidirectional channel count: 1
• Identical type classification: Zener TVS diode
• Identical power rating: 400W peak pulse
• Identical operating temperature range: -55°C to 175°C (TJ)
• Identical application category: General Purpose

Acceptable variations within substitution parameters:

• Voltage - Breakdown (Min): 10.5V (within tolerance band)
• Voltage - Clamping (Max) @ Ipp: 15.6V (within acceptable clamp voltage range)
• Current - Peak Pulse (10/1000µs): 26.3A to 27A (within specification tolerance)

Parameter Comparison

Engineering Selection Recommendations

Both P4KE11CA and P4KE11CA-B are qualified substitutes for the obsolete P4KE11C-B based on electrical parameter equivalence and mechanical compatibility. Selection between substitute options depends on procurement and assembly requirements:

P4KE11CA (Taiwan Semiconductor Corporation) is suitable for applications requiring active product status with tape and reel packaging for automated assembly processes. This part maintains full electrical equivalence with identical reverse standoff voltage, operating temperature range, and power dissipation characteristics.

P4KE11CA-B (Littelfuse) is suitable for applications requiring bulk packaging or preferring continuity with the original manufacturer. This part provides identical electrical performance and maintains Littelfuse manufacturing lineage while offering active product status.

Both substitutes comply with ROHS3 requirements and maintain the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications as the original part. Voltage clamping performance of the substitutes (15.6V maximum) is superior to the original specification (16.38V maximum), providing enhanced transient suppression characteristics.

Frequently Asked Questions (FAQ)

Q: Can P4KE11CA or P4KE11CA-B be used as direct replacements for P4KE11C-B in existing circuit designs?

A: Yes. Both substitute parts maintain identical reverse standoff voltage (9.4V), operating temperature range (-55 to 175°C), power rating (400W), and package configuration (DO-204AL through-hole). The electrical parameters fall within acceptable substitution tolerances for general-purpose TVS diode applications.

Q: What is the difference between P4KE11CA and P4KE11CA-B?

A: The primary differences are manufacturer and packaging format. P4KE11CA is manufactured by Taiwan Semiconductor Corporation and supplied in tape and reel format. P4KE11CA-B is manufactured by Littelfuse and supplied in bulk packaging. Electrical specifications are equivalent.

Q: Are there any performance differences between the original P4KE11C-B and the substitute parts?

A: The substitute parts exhibit superior voltage clamping performance. The P4KE11C-B specifies a maximum clamping voltage of 16.38V, while both P4KE11CA and P4KE11CA-B specify 15.6V maximum clamping voltage. This represents improved transient suppression capability. All other electrical parameters remain equivalent.

Q: Do the substitute parts have the same compliance certifications as the original?

A: Yes. Both P4KE11CA and P4KE11CA-B are ROHS3 compliant with identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Both maintain moisture sensitivity level 1 (unlimited).

Q: Which substitute should be selected for new designs?

A: Selection depends on procurement requirements. For automated assembly with tape and reel packaging, P4KE11CA is appropriate. For bulk packaging or manufacturer continuity preference, P4KE11CA-B is appropriate. Both are active products with equivalent electrical performance.

Q: Is the DO-204AL package identical to DO-41?

A: Yes. DO-204AL and DO-41 are equivalent designations for the same through-hole axial package configuration used in all three parts (original and substitutes).