P4KE47CA-B Equivalent & Substitute Parts

Part Overview

The P4KE47CA-B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant. The part is currently active in production with 946 pieces available in bulk packaging. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative packaging or performance characteristics are required.

Substiute Parts

P4KE47CA-B

Littelfuse Inc.In Stock: 963P4KE47CA-B Datasheet

Current PartRFQ

P4KE47CA

Taiwan Semiconductor CorporationIn Stock: 300133P4KE47CA Datasheet

MFR RecommendedRFQ

P6KE47CA

Diotec SemiconductorIn Stock: 25492P6KE47CA Datasheet

MFR RecommendedRFQ

P4KE47CAHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 6360P4KE47CAHE3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE47CA-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 40.2V
• Voltage - Breakdown (Min): 44.7V
• Voltage - Clamping (Max) @ Ipp: 64.8V
• Bidirectional Channels: 1
• Type: Zener
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• RoHS Status: ROHS3 Compliant

Substitute parts must maintain identical voltage specifications (reverse standoff, breakdown, and clamping voltages) and operate within the same temperature range. Current-handling capacity and power dissipation may vary within acceptable margins for the application category. Package variations (DO-204AL, DO-15) are acceptable provided the through-hole mounting requirement is preserved and the component footprint is compatible with the circuit board design.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with the original P4KE47CA-B specification.

P4KE47CA (Taiwan Semiconductor Corporation): This part is electrically equivalent to the main part with identical voltage parameters and operating temperature range. The peak pulse current specification is marginally higher at 6.4A compared to 6.3A, and packaging is identical (DO-204AL). This part is available in Tape & Reel format with substantial inventory (300,100 pieces), making it suitable for high-volume production environments.

P6KE47CA (Diotec Semiconductor): This part maintains identical voltage specifications but differs in package format (DO-204AC/DO-15 instead of DO-204AL/DO-41) and offers enhanced current-handling capacity (9.7A peak pulse) and power dissipation (600W). The operating temperature minimum is -50°C compared to -55°C. This part is appropriate for applications requiring higher transient current absorption or when DO-15 package compatibility exists in the circuit design.

P4KE47CAHE3/54 (Vishay General Semiconductor - Diodes Division): This part is electrically equivalent with identical voltage and temperature specifications in the DO-204AL package. It carries AEC-Q101 automotive qualification and is marketed under the TransZorb® series designation. Peak pulse current is 6.2A. This part is suitable for automotive-grade applications requiring formal qualification documentation.

Frequently Asked Questions (FAQ)

Q: Can P4KE47CA-B be directly replaced with P4KE47CA from Taiwan Semiconductor?

A: Yes. Both parts share identical voltage specifications (40.2V reverse standoff, 44.7V breakdown, 64.8V clamping), identical package format (DO-204AL), and identical operating temperature range (-55°C to 175°C). The marginal difference in peak pulse current (6.4A vs. 6.3A) is within acceptable tolerance for general-purpose TVS applications.

Q: What is the primary difference between P4KE47CA-B and P6KE47CA?

A: The primary difference is the package format: P4KE47CA-B uses DO-204AL (DO-41), while P6KE47CA uses DO-204AC (DO-15). Additionally, P6KE47CA offers higher current-handling capacity (9.7A vs. 6.3A) and greater power dissipation (600W vs. 400W). The operating temperature minimum differs by 5°C (-50°C vs. -55°C). Substitution is valid only if the circuit board layout accommodates the DO-15 package footprint.

Q: Is P4KE47CAHE3/54 suitable for non-automotive applications?

A: Yes. P4KE47CAHE3/54 meets all electrical and thermal specifications required for general-purpose TVS applications. The AEC-Q101 automotive qualification is an additional certification that does not restrict use in non-automotive designs. This part is electrically interchangeable with P4KE47CA-B in the DO-204AL package.

Q: What packaging formats are available for these substitute parts?

A: P4KE47CA (Taiwan Semiconductor) is supplied in Tape & Reel format. P4KE47CAHE3/54 (Vishay) is supplied in Cut Tape format. P6KE47CA (Diotec) packaging format is not specified in the available data. The original P4KE47CA-B is supplied in Bulk packaging. Packaging selection depends on production volume and assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification, matching the regulatory status of the original P4KE47CA-B.