CGRC307-G General Purpose Rectifier Diode 1000V 3A DO-214AB Equivalent & Substitute Parts

Part Overview

The CGRC307-G is a general purpose rectifier diode manufactured by Comchip Technology, rated for 1000V DC reverse voltage and 3A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this rectifier specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 3	V @ A
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	5	µA @ 1000 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

Substitute parts for the CGRC307-G are classified into two functional groups based on electrical parameter compatibility:

Group 1: Direct Electrical Equivalents (1000V / 3A Rating)

Parts in this group maintain identical or equivalent voltage and current ratings to the CGRC307-G. These parts satisfy the core electrical requirements: 1000V DC reverse voltage, 3A average rectified current, surface mount DO-214AB/SMC package, and standard recovery speed characteristics. Substitution within this group is based on matching these critical parameters while accounting for minor variations in forward voltage drop, reverse leakage current, and recovery time specifications.

Group 2: Voltage-Reduced Alternatives (50V / 3A Rating)

The S3AC-HF represents a lower voltage alternative rated at 50V DC reverse voltage with identical 3A current rating. This part is suitable only for applications where the circuit operates at significantly reduced voltage levels and does not require the full 1000V rating of the original component.

Group 3: Current-Elevated Alternatives (1000V / 5A-6A Rating)

Parts in this group maintain the 1000V voltage rating but provide higher current capacity (5A or 6A). These are suitable for applications requiring increased current handling while maintaining voltage compatibility.

Substitution logic is strictly determined by: (1) DC reverse voltage rating, (2) average rectified current rating, (3) package type (DO-214AB/SMC), (4) mounting configuration (surface mount), and (5) product status (active vs. obsolete).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If	Speed	Ir @ Vr	Package	Status	RoHS
CGRC307-G	Comchip Technology	1000	3	1.1 @ 3A	Standard >500ns	5 µA @ 1000V	DO-214AB	Obsolete	ROHS3
CGRC307-HF	Comchip Technology	1000	3	1.1 @ 3A	Standard >500ns	5 µA @ 1000V	DO-214AB	Active	ROHS3
S3AC-HF	Comchip Technology	50	3	1.0 @ 3A	Standard >500ns	5 µA @ 50V	DO-214AB	Active	ROHS3
RS3M-13-F	Diodes Incorporated	1000	3	1.3 @ 3A	Fast ≤500ns	5 µA @ 1000V	DO-214AB	Active	ROHS3
S3K-13-F	Diodes Incorporated	800	3	1.15 @ 3A	Standard >500ns	10 µA @ 800V	DO-214AB	Active	ROHS3
S3M	Diotec Semiconductor	1000	3	1.15 @ 3A	Standard >500ns	5 µA @ 1000V	DO-214AB	Active	N/A
S3M-13-F	Diodes Incorporated	1000	3	1.15 @ 3A	Standard >500ns	10 µA @ 1000V	DO-214AB	Active	ROHS3
S3M-E3/9AT	Vishay General Semiconductor	1000	3	1.15 @ 2.5A	Standard >500ns	10 µA @ 1000V	DO-214AB	Active	ROHS3
S3M-TP	Micro Commercial Co	1000	3	1.2 @ 3A	Standard >500ns	10 µA @ 1000V	DO-214AB	Active	ROHS3
S5MHE3_A/I	Vishay General Semiconductor	1000	5	1.15 @ 5A	Standard >500ns	10 µA @ 1000V	DO-214AB	Active	ROHS3
SMLJ60S10-TP	Micro Commercial Co	1000	6	1.0 @ 6A	Standard >500ns	5 µA @ 1000V	DO-214AB	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: CGRC307-HF

The CGRC307-HF is the direct successor to the obsolete CGRC307-G, manufactured by Comchip Technology. Both parts share identical electrical specifications: 1000V reverse voltage, 3A average rectified current, 1.1V maximum forward voltage at 3A, and standard recovery speed characteristics. The CGRC307-HF maintains active product status and ROHS3 compliance. The primary difference is packaging format (Tape & Reel vs. unspecified for the original). This part provides the highest compatibility for direct replacement in existing designs.

Secondary Recommendations: S3M-13-F, S3M-TP, S3M

These parts meet the core electrical requirements of 1000V / 3A rating in DO-214AB package with active product status and ROHS3 compliance. S3M-13-F (Diodes Incorporated) and S3M-TP (Micro Commercial Co) are widely available with high inventory levels. S3M-13-F exhibits fast recovery characteristics (≤500ns) compared to the standard recovery (>500ns) of the original part. S3M-TP provides standard recovery matching the original specification. Both maintain forward voltage specifications within acceptable engineering tolerances.

Alternative for Elevated Current Applications: S5MHE3_A/I

For applications requiring increased current capacity while maintaining 1000V voltage rating, the S5MHE3_A/I (Vishay General Semiconductor) provides 5A average rectified current. This part carries AEC-Q101 automotive qualification and active product status. Substitution is appropriate only when circuit design permits the higher current rating.

Alternative for Elevated Current Applications: SMLJ60S10-TP

The SMLJ60S10-TP (Micro Commercial Co) provides 6A average rectified current at 1000V rating. This part exhibits superior forward voltage characteristics (1.0V @ 6A) and maintains ROHS3 compliance with active product status. Substitution is appropriate only when circuit design permits the higher current rating.

Not Recommended: S3K-13-F

The S3K-13-F operates at reduced voltage rating (800V vs. 1000V). Substitution is not recommended for applications requiring the full 1000V rating, as this part does not satisfy the voltage specification of the original component.

Not Recommended: S3AC-HF

The S3AC-HF operates at significantly reduced voltage rating (50V vs. 1000V). Substitution is not recommended except for applications specifically designed for low-voltage operation.

Frequently Asked Questions (FAQ)

Q1: Can CGRC307-HF be used as a direct replacement for CGRC307-G?

Yes. The CGRC307-HF is the active product successor to the obsolete CGRC307-G. Both parts share identical electrical specifications: 1000V reverse voltage, 3A average rectified current, 1.1V maximum forward voltage at 3A, and standard recovery speed. The primary difference is packaging format (Tape & Reel). CGRC307-HF maintains ROHS3 compliance and active product status.

Q2: What is the difference between standard recovery and fast recovery diodes?

Recovery speed refers to the time required for the diode to transition from conducting to blocking state. The CGRC307-G specifies standard recovery (>500ns). The RS3M-13-F specifies fast recovery (≤500ns). Fast recovery diodes exhibit shorter switching times, which may affect circuit performance in high-frequency applications. Selection depends on circuit requirements; standard recovery parts are suitable for most general purpose rectification applications.

Q3: Are all substitute parts available in the same DO-214AB package?

Yes. All substitute parts listed are available in DO-214AB (SMC) surface mount package, maintaining mechanical and electrical interface compatibility with the original CGRC307-G.

Q4: What does ROHS3 compliance mean?

ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 2011/65/EU as amended by Directive (EU) 2015/863. This certification confirms the part does not contain restricted substances including lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers above specified thresholds.

Q5: Can I substitute a 5A or 6A rated diode for the 3A CGRC307-G?

Substitution with higher current-rated parts (S5MHE3_A/I at 5A or SMLJ60S10-TP at 6A) is permissible from an electrical standpoint, as these parts maintain the 1000V voltage rating and DO-214AB package. However, substitution should be verified against circuit design requirements. Higher current-rated parts may exhibit different thermal characteristics and forward voltage behavior at the actual operating current of 3A.

Q6: What is the significance of forward voltage (Vf) differences between substitute parts?

Forward voltage varies among substitute parts: CGRC307-G specifies 1.1V @ 3A, while alternatives range from 1.0V to 1.3V @ 3A. Forward voltage affects power dissipation and heat generation in the diode. In rectification circuits, lower forward voltage reduces power loss. Differences of 0.1-0.2V are typically acceptable in general purpose applications but should be verified for circuits with tight thermal or efficiency requirements.

Q7: What is Moisture Sensitivity Level (MSL)?

MSL 1 (Unlimited) indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All listed substitute parts carry MSL 1 rating, confirming compatibility with standard storage and assembly processes.

Q8: Why is inventory quantity listed for each part?

Inventory availability is provided as reference information for supply chain planning. High inventory levels (such as S3M-TP with 321,300 pieces) indicate strong market availability and reduced lead time risk. Lower inventory levels may indicate specialized or regional availability. Inventory data should be verified with component distributors for current availability.

Q9: Can CGRC307-G be used in automotive applications?

The CGRC307-G does not carry automotive qualification markings. For automotive applications requiring AEC-Q101 qualification, the S5MHE3_A/I (Vishay General Semiconductor) is qualified to AEC-Q101 standard and provides equivalent 1000V rating with increased 5A current capacity.

Q10: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

Cut Tape (CT) and Digi-Reel packaging are supplied on tape but in shorter lengths suitable for manual handling or small-volume assembly. Tape & Reel (TR) packaging provides full reel quantities optimized for automated pick-and-place assembly equipment. Both formats use identical DO-214AB component packages; selection depends on assembly process requirements and volume.

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