PC06F1A Surface Mount Fuse 1A 32V AC/DC 0603 Equivalent & Substitute Parts

Part Overview

The PC06F1A is a surface mount board-mounted fuse manufactured by Eaton - Electronics Division, rated for 1 A at 32 V AC and 32 V DC. This component belongs to the PolyCHIP™ PC06F series and is packaged in the 0603 (1608 Metric) form factor. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across current rating, voltage ratings, response time, and mechanical form factor while meeting applicable industry certifications.

Substiute Parts

PC06F1A

Eaton - Electronics DivisionIn Stock: 20486PC06F1A Datasheet

Current PartRFQ

TR/0603FA1-R

Eaton - Electronics DivisionIn Stock: 5902TR/0603FA1-R Datasheet

SimilarRFQ

0438001.WR

Littelfuse Inc.In Stock: 7850670438001.WR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PC06F1A is determined by strict alignment with the following electrical and mechanical parameters:

Primary Compatibility Criteria:

• Current Rating: 1 A (exact match required)
• Voltage Rating - AC: 32 V (exact match required)
• Voltage Rating - DC: 32 V minimum (equal or higher acceptable)
• Response Time: Fast Blow (exact match required)
• Package / Case: 0603 (1608 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Fuse Type: Board Mount, Cartridge Style Excluded (exact match required)
• Breaking Capacity @ Rated Voltage: 50 A (exact match required)

Two substitute parts meet these criteria with the following distinctions:

TR/0603FA1-R (Eaton - Electronics Division): Maintains identical electrical specifications with active product status and enhanced compliance certifications (CSA, UL). Operating temperature range specified as -55°C ~ 125°C.

0438001.WR (Littelfuse Inc.): Maintains identical current and AC voltage ratings with elevated DC voltage rating (63 V DC versus 32 V DC). Active product status with extended operating temperature range (-55°C ~ 150°C) and higher melting I²t value (0.0593 versus 0.00616).

Parameter Comparison

Engineering Selection Recommendations

TR/0603FA1-R Selection Criteria:

The TR/0603FA1-R represents a direct functional equivalent to the PC06F1A with identical electrical specifications across all critical parameters: 1 A current rating, 32 V AC and DC voltage ratings, fast blow response, and 50 A breaking capacity. This part is manufactured by the same supplier (Eaton - Electronics Division) and maintains the same 0603 package form factor. The TR/0603FA1-R holds active product status, ensuring long-term availability and supply chain stability. Compliance certifications include both CSA and UL approval. The part exhibits improved moisture sensitivity characteristics (MSL 1 with unlimited shelf life versus MSL 2 with 1-year limitation). Operating temperature range is specified as -55°C ~ 125°C. This substitute is appropriate for applications requiring exact electrical and thermal performance matching.

0438001.WR Selection Criteria:

The 0438001.WR from Littelfuse Inc. maintains identical current rating (1 A), AC voltage rating (32 V), response time (fast blow), and breaking capacity (50 A). The DC voltage rating is elevated to 63 V, providing additional voltage margin in DC-biased applications. This part is manufactured by an alternative supplier with active product status and dual CSA/UL certifications. The 0438001.WR supports an extended operating temperature range (-55°C ~ 150°C) and offers improved moisture sensitivity (MSL 1 with unlimited shelf life). The elevated melting I²t value (0.0593) and higher DC cold resistance (0.31 Ohms) reflect different thermal and electrical characteristics. This substitute is suitable for applications where higher DC voltage capability or extended temperature operation is beneficial or required.

Selection Logic:

Both substitute parts satisfy the mandatory electrical and mechanical compatibility criteria for the obsolete PC06F1A. Selection between TR/0603FA1-R and 0438001.WR depends on application-specific requirements: choose TR/0603FA1-R for same-manufacturer continuity and identical thermal performance; choose 0438001.WR for elevated DC voltage capability or extended temperature operation. Both parts carry current industry certifications and active product status.

Frequently Asked Questions (FAQ)

Q: Can TR/0603FA1-R be used as a direct replacement for PC06F1A in all applications?

A: Yes. The TR/0603FA1-R maintains identical electrical specifications (1 A, 32 V AC/DC, fast blow, 50 A breaking capacity) and identical 0603 package form factor. Both are manufactured by Eaton - Electronics Division. The TR/0603FA1-R has active product status, ensuring availability. Mechanical and electrical compatibility is complete.

Q: What is the primary difference between TR/0603FA1-R and 0438001.WR?

A: The primary difference is DC voltage rating: TR/0603FA1-R is rated 32 V DC (matching the original PC06F1A), while 0438001.WR is rated 63 V DC. Both maintain 1 A current rating and 32 V AC rating. The 0438001.WR is manufactured by Littelfuse Inc. rather than Eaton. Both are electrically and mechanically compatible with the original part's 0603 package and fast blow response.

Q: Is the 0438001.WR suitable for applications originally designed for PC06F1A?

A: Yes. The 0438001.WR meets all mandatory electrical and mechanical compatibility criteria: 1 A current rating, 32 V AC voltage rating, fast blow response, 50 A breaking capacity, and 0603 package form factor. The elevated 63 V DC rating provides additional voltage margin and does not compromise compatibility with 32 V DC applications. The part carries CSA and UL certifications.

Q: What is the significance of the different melting I²t values?

A: Melting I²t is a thermal characteristic affecting fuse response behavior. PC06F1A specifies 0.00616, TR/0603FA1-R specifies 0.0025, and 0438001.WR specifies 0.0593. These differences reflect different thermal mass and response profiles within the fast blow category. All three parts maintain fast blow response classification and identical 50 A breaking capacity at rated voltage. Application-specific thermal requirements should be evaluated if precise I²t matching is critical.

Q: Are both substitute parts RoHS compliant?

A: TR/0603FA1-R and 0438001.WR are both ROHS3 compliant. The original PC06F1A RoHS status is not specified in the provided data. Both substitute parts meet current environmental compliance standards.

Q: What is the difference in packaging between TR/0603FA1-R and 0438001.WR?

A: TR/0603FA1-R is supplied in Tape & Reel (TR) packaging. 0438001.WR is supplied in Cut Tape (CT) and Digi-Reel® packaging. Both are surface mount compatible formats suitable for automated assembly. Selection depends on production equipment compatibility and inventory management preferences.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All three parts (PC06F1A, TR/0603FA1-R, and 0438001.WR) share identical 0603 (1608 Metric) package dimensions and surface mount mounting type. Footprint compatibility is complete. Electrical compatibility is confirmed for TR/0603FA1-R (identical specifications) and 0438001.WR (compatible within specified parameters). PCB layout and assembly processes require no modification.

Q: Which substitute part should be selected for new designs?

A: For new designs, either TR/0603FA1-R or 0438001.WR is appropriate based on application requirements. TR/0603FA1-R provides same-manufacturer continuity with identical thermal characteristics. 0438001.WR offers elevated DC voltage capability (63 V) and extended operating temperature range (-55°C ~ 150°C). Both carry active product status and current industry certifications (CSA, UL). Evaluate specific application voltage and temperature requirements to determine optimal selection.