CFRC305-G Equivalent & Substitute Parts Reference

Part Overview

The CFRC305-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 600 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the DO-214AB SMC package family, enabling direct replacement in applications requiring 600 V / 3 A rectification performance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) Maximum @ If	1.3 V @ 3 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction Maximum	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the CFRC305-G are classified into two functional groups based on electrical performance characteristics:

Group 1: Fast Recovery Diodes (≤ 500ns) These substitutes maintain the fast recovery speed specification of the original part. Substitution is valid when reverse recovery time (trr) is ≤ 500 ns and all other parameters remain within acceptable tolerance:

Voltage - DC Reverse (Vr): 600 V minimum
Current - Average Rectified (Io): 3 A minimum
Package: DO-214AB / SMC
RoHS3 Compliance: Required
MSL: 1 (Unlimited)

Group 2: Standard Recovery Diodes (> 500ns) These substitutes feature standard recovery characteristics with trr > 500 ns. Application compatibility depends on circuit tolerance for slower switching performance. Substitution parameters remain identical to Group 1 except for recovery speed classification.

All substitute parts listed maintain 600 V reverse voltage rating, 3 A or higher current rating, surface mount DO-214AB packaging, ROHS3 compliance, and MSL 1 rating.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If	Speed	trr (ns)	Ir @ Vr (µA)	Tj (Max) °C	Package
CFRC305-G	Comchip Technology	600	3	1.3 V @ 3 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	150	DO-214AB (SMC)
RS3J-13-F	Diodes Incorporated	600	3	1.3 V @ 3 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	150	DO-214AB (SMC)
ER3J-TP	Micro Commercial Co	600	3	1.7 V @ 3 A	Fast Recovery ≤ 500ns	35	5 @ 600 V	175	DO-214AB (SMC)
ES3J	Good-Ark Semiconductor	600	3	1.7 V @ 3 A	Fast Recovery ≤ 500ns	35	10 @ 600 V	150	DO-214AB (SMC)
MURS360T3G	onsemi	600	3	1.25 V @ 3 A	Fast Recovery ≤ 500ns	75	10 @ 600 V	175	DO-214AB (SMC)
S3J	Diotec Semiconductor	600	3	1.15 V @ 3 A	Standard Recovery > 500ns	1500	5 @ 600 V	150	DO-214AB (SMC)
S3J-13-F	Diodes Incorporated	600	3	1.15 V @ 3 A	Standard Recovery > 500ns	Not Specified	10 @ 600 V	150	DO-214AB (SMC)
S3J-E3/9AT	Vishay General Semiconductor - Diodes Division	600	3	1.15 V @ 2.5 A	Standard Recovery > 500ns	2500	10 @ 600 V	150	DO-214AB (SMC)
S3J-TP	Micro Commercial Co	600	3	1.2 V @ 3 A	Standard Recovery > 500ns	Not Specified	10 @ 600 V	150	DO-214AB (SMC)
SMLJ60S6-TP	Micro Commercial Co	600	6	1 V @ 6 A	Standard Recovery > 500ns	Not Specified	5 @ 600 V	150	DO-214AB (SMC)
STTH2R06S	STMicroelectronics	600	2	1.7 V @ 2 A	Fast Recovery ≤ 500ns	50	2 @ 600 V	175	DO-214AB (SMC)

Engineering Selection Recommendations

Direct Electrical Equivalents (Identical Specifications)

RS3J-13-F (Diodes Incorporated) provides direct electrical equivalence to CFRC305-G with matching voltage, current, forward voltage drop, and recovery time specifications. Both components are ROHS3 compliant, MSL 1 rated, and packaged in DO-214AB (SMC). This substitute is suitable for one-to-one replacement without circuit modification.

Fast Recovery Substitutes with Enhanced Performance

ER3J-TP, ES3J, and MURS360T3G maintain the fast recovery speed classification (≤ 500ns) required by the original specification. These parts feature reduced reverse recovery time (35 ns to 75 ns versus 250 ns), enabling improved switching performance in high-frequency applications. All three are ROHS3 compliant and MSL 1 rated. ER3J-TP and MURS360T3G support extended junction temperature operation (175°C maximum) compared to the original 150°C rating.

Standard Recovery Substitutes

S3J, S3J-13-F, S3J-E3/9AT, and S3J-TP feature standard recovery characteristics (trr > 500ns) and are suitable for applications where switching speed is not performance-critical. These parts maintain 600 V / 3 A electrical ratings, ROHS3 compliance, and MSL 1 classification. Forward voltage characteristics range from 1.15 V to 1.2 V at 3 A, providing lower conduction losses than the original 1.3 V specification.

Current-Upgraded Substitute

SMLJ60S6-TP (Micro Commercial Co) provides 6 A average rectified current capacity while maintaining 600 V reverse voltage rating and DO-214AB packaging. This part is suitable for applications requiring higher current handling than the original 3 A specification. Standard recovery speed and ROHS3 compliance are maintained.

Current-Limited Substitute

STTH2R06S (STMicroelectronics) is rated for 2 A average rectified current, below the original 3 A specification. This part is not recommended as a direct substitute for the CFRC305-G in applications requiring full 3 A capacity. Use is limited to circuits designed for 2 A operation.

All recommended substitutes maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and surface mount DO-214AB (SMC) packaging compatibility.

Frequently Asked Questions (FAQ)

Q: Can RS3J-13-F replace CFRC305-G in all applications?

A: Yes. RS3J-13-F provides identical electrical specifications including 600 V reverse voltage, 3 A current rating, 1.3 V forward voltage drop at 3 A, and 250 ns reverse recovery time. Both components are ROHS3 compliant and MSL 1 rated. Direct substitution is valid without circuit modification.

Q: What is the difference between fast recovery and standard recovery diodes in this product family?

A: Fast recovery diodes (CFRC305-G, RS3J-13-F, ER3J-TP, ES3J, MURS360T3G) feature reverse recovery time ≤ 500 ns, enabling faster switching transitions suitable for high-frequency rectification circuits. Standard recovery diodes (S3J, S3J-13-F, S3J-E3/9AT, S3J-TP, SMLJ60S6-TP) have trr > 500 ns and are appropriate for lower-frequency applications where switching speed is not performance-limiting. Selection depends on circuit operating frequency and switching loss requirements.

Q: Is SMLJ60S6-TP a suitable substitute for CFRC305-G?

A: SMLJ60S6-TP provides 6 A current capacity versus the original 3 A rating. This part is suitable only if the application circuit can accommodate the higher current rating. The 6 A device will not damage a 3 A circuit but represents over-specification. Use SMLJ60S6-TP only when higher current capacity is required.

Q: Can STTH2R06S replace CFRC305-G?

A: STTH2R06S is rated for 2 A average rectified current, which is below the original 3 A specification. This part is not recommended as a substitute for CFRC305-G in applications requiring full 3 A capacity. Use is limited to circuits specifically designed for 2 A operation.

Q: What packaging compatibility exists among these substitute parts?

A: All listed substitute parts use the DO-214AB (SMC) surface mount package, providing mechanical and footprint compatibility with CFRC305-G. Tape & Reel (TR) and Cut Tape (CT) packaging options are available across different manufacturers. Verify packaging format (TR vs. CT) with your supplier to match assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory compliance of the original CFRC305-G component.

Q: Which substitute offers the lowest forward voltage drop?

A: SMLJ60S6-TP features the lowest forward voltage drop at 1 V @ 6 A. Among 3 A rated substitutes, S3J, S3J-13-F, and S3J-E3/9AT offer 1.15 V @ 3 A, compared to the original 1.3 V specification. Lower forward voltage reduces conduction losses in rectification circuits.

Q: What is the temperature operating range difference between CFRC305-G and available substitutes?

A: CFRC305-G supports junction temperatures to 150°C maximum. ER3J-TP and MURS360T3G extend this to 175°C, enabling operation in higher-temperature environments. Standard recovery substitutes (S3J family) maintain the 150°C maximum rating. Verify thermal requirements before selecting a substitute with different temperature specifications.

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