P6KE47C Equivalent & Substitute Parts

Part Overview

The P6KE47C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This component features a DO-15 (DO-204AC) axial package configuration and is rated for 600W peak pulse power dissipation. The P6KE47C is currently classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

P6KE47C

LittelfuseIn Stock: 874P6KE47C Datasheet

Current PartRFQ

P6KE47CA

Diotec SemiconductorIn Stock: 25492P6KE47CA Datasheet

MFR RecommendedRFQ

P6KE47CA

Diotec SemiconductorIn Stock: 25492P6KE47CA Datasheet

MFR RecommendedRFQ

P6KE47CA-G

Comchip TechnologyIn Stock: 1092P6KE47CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6KE47C are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 40.2V
• Power - Peak Pulse: 600W
• Bidirectional Channels: 1
• Mounting Type: Through Hole
• Package / Case: DO-15 (DO-204AC) Axial

Allowable Variation Parameters:

• Voltage - Breakdown (Min): Range 42.35V to 49.4V
• Voltage - Clamping (Max) @ Ipp: Range 64.8V to 68.04V
• Current - Peak Pulse (10/1000µs): 9.26A to 9.7A
• Operating Temperature: Minimum -50°C to -55°C; Maximum 150°C to 175°C

All substitute parts must maintain identical reverse standoff voltage, power rating, channel configuration, and package form factor. Variations in breakdown voltage, clamping voltage, and peak pulse current within the specified ranges are acceptable for functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both P6KE47CA (Diotec Semiconductor) and P6KE47CA-G (Comchip Technology) are active product alternatives to the obsolete P6KE47C. Selection between these substitutes should be based on the following factors:

P6KE47CA (Diotec Semiconductor): This part maintains full compatibility across all critical parameters and offers the widest operating temperature range (-50°C ~ 175°C). With 25,400 units in stock, this option provides superior availability for high-volume applications. ROHS3 compliance is confirmed.

P6KE47CA-G (Comchip Technology): This variant is supplied in Tape & Box (TB) packaging and maintains the full operating temperature range of the original part (-55°C ~ 150°C). With 1,064 units in stock, this option is suitable for applications requiring the original temperature specification at the lower bound. ROHS3 compliance and REACH Unaffected status are confirmed.

Both substitutes meet all electrical and mechanical requirements for direct replacement in the P6KE47C application circuit.

Frequently Asked Questions (FAQ)

Q: Can P6KE47CA and P6KE47CA-G be used interchangeably with P6KE47C?

A: Yes. Both parts maintain identical reverse standoff voltage (40.2V), power rating (600W), bidirectional channel configuration, and DO-15 axial package form factor. Electrical parameter variations fall within acceptable ranges for functional equivalence.

Q: What is the significance of the voltage breakdown difference between P6KE47C (42.35V min) and the substitutes (44.7V / 44.65V min)?

A: The breakdown voltage variation is within the allowable range for this product category. Both substitutes trigger at slightly higher voltages but remain within the 47V nominal rating class. This difference does not affect circuit protection performance in standard applications.

Q: How do the clamping voltage differences affect circuit protection?

A: The P6KE47C clamps at 68.04V maximum, while both substitutes clamp at 64.8V maximum. The lower clamping voltage of the substitutes provides marginally improved transient suppression. Both values are acceptable for general-purpose overvoltage protection applications.

Q: Are there packaging differences between these parts?

A: All three parts use the DO-15 (DO-204AC) axial through-hole package. P6KE47CA-G is supplied in Tape & Box (TB) packaging format, while P6KE47CA uses standard packaging. Both are mechanically and electrically identical for PCB mounting.

Q: What is the inventory status for these substitutes?

A: P6KE47CA (Diotec) has 25,400 units in stock. P6KE47CA-G (Comchip) has 1,064 units in stock. Both are active products with confirmed availability.

Q: Do all parts meet RoHS compliance requirements?

A: Yes. P6KE47C, P6KE47CA, and P6KE47CA-G are all ROHS3 compliant. P6KE47CA-G additionally carries REACH Unaffected status.