P4KE11CA-B Equivalent & Substitute Parts

Part Overview

The P4KE11CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a reverse standoff voltage of 9.4V and provides clamping at 15.6V maximum, making it suitable for protecting sensitive electronic circuits from transient voltage spikes. The part is currently in active production status and is ROHS3 compliant. Substitute parts may be required due to inventory availability, packaging preferences, or performance optimization for specific application requirements.

Substiute Parts

P4KE11CA-B

LittelfuseIn Stock: 865P4KE11CA-B Datasheet

Current PartRFQ

P4KE11CA

Taiwan Semiconductor CorporationIn Stock: 940P4KE11CA Datasheet

MFR RecommendedRFQ

P6KE11CA

Taiwan Semiconductor CorporationIn Stock: 8118P6KE11CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE11CA-B are qualified based on the following critical parameters that determine functional equivalence:

Voltage Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 9.4V
• Voltage - Breakdown (Min): 10.5V
• Voltage - Clamping (Max) @ Ipp: 15.6V

Electrical Performance Parameters (Must Match or Exceed):

• Current - Peak Pulse (10/1000µs): minimum 26.3A
• Power - Peak Pulse: minimum 400W

Physical & Functional Parameters (Must Match):

• Type: Zener
• Bidirectional Channels: 1
• Mounting Type: Through Hole
• Applications: General Purpose

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts may differ in manufacturer, packaging format (Bulk vs. Tape & Reel), package case variant (DO-204AL vs. DO-15), and peak pulse current/power ratings, provided the electrical performance meets or exceeds the minimum requirements.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts meet the electrical and compliance requirements for direct substitution with the P4KE11CA-B:

P4KE11CA (Taiwan Semiconductor Corporation): This part maintains identical voltage specifications and package form factor (DO-204AL/DO-41) as the original. Peak pulse current is 27A, exceeding the minimum 26.3A requirement. Power rating remains at 400W. This substitute is suitable for applications requiring the same physical footprint and electrical performance. The primary difference is the packaging format (Tape & Reel vs. Bulk) and manufacturer.

P6KE11CA (Taiwan Semiconductor Corporation): This part maintains identical voltage specifications but uses a different package form factor (DO-15 instead of DO-41). Peak pulse current is 38A and power rating is 600W, both exceeding the original specifications. This substitute provides enhanced transient handling capability and is suitable for applications where higher current capacity is beneficial or where DO-15 package compatibility exists. PCB layout modifications may be required due to different lead spacing.

All three parts are ROHS3 compliant, carry MSL rating 1 (Unlimited), and maintain active production status. Selection between substitutes should be based on packaging availability, PCB layout constraints, and application current requirements.

Frequently Asked Questions (FAQ)

Q: Can P4KE11CA replace P4KE11CA-B directly? A: Yes. Both parts share identical voltage specifications (9.4V standoff, 10.5V breakdown, 15.6V clamping), the same DO-204AL (DO-41) package form factor, and equivalent electrical performance. The primary difference is manufacturer and packaging format (Tape & Reel vs. Bulk). No circuit modifications are required.

Q: What is the difference between P4KE11CA and P6KE11CA? A: Both maintain the same voltage ratings (9.4V standoff, 15.6V clamping). The P6KE11CA differs in package type (DO-15 vs. DO-41), peak pulse current (38A vs. 27A), and power rating (600W vs. 400W). The P6KE11CA provides higher transient current handling and requires different PCB footprint considerations.

Q: Can P6KE11CA be used in place of P4KE11CA-B? A: Yes, from an electrical standpoint. The voltage specifications are identical, and the P6KE11CA exceeds the current and power requirements. However, the DO-15 package has different lead spacing than the DO-41 package, requiring PCB layout verification before substitution.

Q: Are all three parts RoHS compliant? A: Yes. P4KE11CA-B, P4KE11CA, and P6KE11CA are all ROHS3 compliant with MSL rating 1 (Unlimited moisture sensitivity).

Q: Which substitute should I choose for new designs? A: Selection depends on packaging availability and application requirements. Use P4KE11CA for direct form-factor compatibility with existing designs. Use P6KE11CA if higher transient current capacity (38A vs. 26.3A) is needed and DO-15 package compatibility exists in your PCB layout.

Q: Do these parts have the same operating temperature range? A: P4KE11CA-B and P4KE11CA both specify -55°C to 175°C (TJ). Operating temperature data for P6KE11CA was not provided in the available specifications.