CGRC301-G Equivalent & Substitute Parts Reference

Part Overview

The CGRC301-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This part is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing production and maintenance applications. The part exhibits standard recovery characteristics with a maximum forward voltage of 1.1 V at 3 A and reverse leakage current of 5 µA at 50 V. Equivalent alternatives are available from multiple manufacturers with active product status and improved performance characteristics.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 3 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 50 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CGRC301-G is determined by strict electrical and mechanical compatibility criteria. All substitute parts must meet or exceed the following mandatory parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): 50 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-214AB or SMC equivalent
Mounting Type: Surface Mount
Operating Temperature - Junction: 150°C maximum rating

Substitution Categories:

Category 1: Direct Equivalents (Identical Electrical Specifications) Parts meeting all electrical parameters with standard or fast recovery characteristics. These include CGRC301-HF, S3AC-HF, and S3A-13-F.

Category 2: Enhanced Performance Substitutes (Improved Characteristics) Parts exceeding base specifications with faster recovery times, lower forward voltage, or extended temperature ranges. These include ES3A, ES3A-13-F, and ES3A-E3/57T from multiple manufacturers.

Category 3: Alternative Recovery Speed Options Parts with fast recovery characteristics (≤500ns) offering improved switching performance compared to the standard recovery CGRC301-G. These include all ES3A variants and RS3A variants.

Category 4: Higher Current Rating (Uprated) SMLJ60S05-TP provides 6 A rating, suitable for applications requiring higher current capacity within the same voltage class and package footprint.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (V)	Speed	Ir @ Vr (µA)	Tj (Max) °C	Product Status
CGRC301-G	Comchip Technology	50	3	1.1 @ 3 A	Standard >500ns	5 @ 50 V	150	Obsolete
CGRC301-HF	Comchip Technology	50	3	1.1 @ 3 A	Standard >500ns	5 @ 50 V	150	Active
S3AC-HF	Comchip Technology	50	3	1.0 @ 3 A	Standard >500ns	5 @ 50 V	150	Active
ES3A	Taiwan Semiconductor Corporation	50	3	0.95 @ 3 A	Fast ≤500ns	10 @ 50 V	150	Active
ES3A-13-F	Diodes Incorporated	50	3	0.9 @ 3 A	Fast ≤500ns	10 @ 50 V	150	Active
ES3A-E3/57T	Vishay General Semiconductor - Diodes Division	50	3	0.9 @ 3 A	Fast ≤500ns	10 @ 50 V	150	Active
RS3A-13-F	Diodes Incorporated	50	3	1.3 @ 3 A	Fast ≤500ns	5 @ 50 V	150	Active
RS3A-E3/57T	Vishay General Semiconductor - Diodes Division	50	3	1.3 @ 2.5 A	Fast ≤500ns	10 @ 50 V	150	Active
S3A	Diodes Incorporated	50	3	1.15 @ 3 A	Standard >500ns	10 @ 50 V	150	Obsolete
S3A-13-F	Diodes Incorporated	50	3	1.15 @ 3 A	Standard >500ns	10 @ 50 V	150	Active
SMLJ60S05-TP	Micro Commercial Co	50	6	1.0 @ 6 A	Standard >500ns	5 @ 50 V	150	Not For New Designs

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

CGRC301-HF from Comchip Technology is the direct active equivalent, maintaining identical electrical specifications while offering Active product status. This part is suitable for direct replacement in existing designs without circuit modification.

S3A-13-F from Diodes Incorporated provides Active status with standard recovery characteristics matching the original CGRC301-G performance profile. This part is available in Tape & Reel packaging with 15,200 units in stock.

Enhanced Performance Alternatives:

ES3A-13-F from Diodes Incorporated offers improved performance through fast recovery characteristics (≤500ns, 25 ns trr) and reduced forward voltage (0.9 V @ 3 A). This part is suitable for applications where switching speed improvement is beneficial. Active product status with 10,300 units in stock.

ES3A-E3/57T from Vishay General Semiconductor provides fast recovery operation (≤500ns, 30 ns trr) with 0.9 V forward voltage. Active product status with 5,250 units in stock.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications. All parts carry EAR99 ECCN classification and HTSUS 8541.10.0080 tariff code.

Obsolete Part Alternatives:

S3A from Diodes Incorporated is classified as Obsolete. While functionally compatible, this part should not be selected for new designs. CGRC301-G itself is Obsolete; transition to CGRC301-HF or S3A-13-F is required for ongoing production.

Higher Current Applications:

SMLJ60S05-TP from Micro Commercial Co provides 6 A rating in the same DO-214AB package. This part is classified as Not For New Designs and should be used only when higher current capacity is required and no 3 A alternative is suitable.

Frequently Asked Questions (FAQ)

Q: Can CGRC301-HF be used as a direct replacement for CGRC301-G?

A: Yes. CGRC301-HF maintains identical electrical specifications: 50 V reverse voltage, 3 A average rectified current, 1.1 V forward voltage at 3 A, and standard recovery characteristics. The primary difference is product status (Active vs. Obsolete) and packaging format. CGRC301-HF is available in Tape & Reel format.

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

A: Standard recovery diodes exhibit recovery times greater than 500 ns, while fast recovery diodes exhibit recovery times of 500 ns or less. Fast recovery variants (ES3A series, RS3A series) provide improved switching performance and reduced switching losses. Selection depends on circuit switching frequency requirements.

Q: Are ES3A variants compatible with CGRC301-G in all applications?

A: ES3A variants meet or exceed all mandatory electrical parameters (50 V, 3 A, DO-214AB package). However, ES3A parts feature fast recovery characteristics (≤500ns) compared to CGRC301-G standard recovery (>500ns). This difference is beneficial in high-frequency switching applications but may require circuit evaluation in sensitive analog applications.

Q: What does "Not For New Designs" mean for SMLJ60S05-TP?

A: This designation indicates the part is available for existing applications but should not be selected for new circuit designs. Comchip Technology and Diodes Incorporated alternatives with Active status are preferred for new designs.

Q: Can I use a 6 A rated diode (SMLJ60S05-TP) in place of a 3 A rated diode (CGRC301-G)?

A: Yes, from an electrical compatibility standpoint. The 6 A rating provides additional current capacity margin. However, SMLJ60S05-TP is classified as Not For New Designs. For new applications requiring higher current capacity, evaluate ES3A or S3AC variants with Active status.

Q: What packaging formats are available for substitutes?

A: Substitutes are available in multiple packaging formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) & Digi-Reel for manual assembly, and bulk packaging. CGRC301-HF, S3A-13-F, ES3A-13-F, and ES3A-E3/57T are available in Tape & Reel format suitable for high-volume production.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original CGRC301-G environmental specifications.

Q: Which substitute offers the lowest forward voltage?

A: ES3A-13-F and ES3A-E3/57T both offer 0.9 V forward voltage at 3 A, representing the lowest forward voltage among available substitutes. This characteristic reduces power dissipation in high-current applications.

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