CFRC304-G Equivalent & Substitute Parts Reference

Part Overview

The CFRC304-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 400 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. This fast recovery diode with 150 ns reverse recovery time is designed for standard rectification applications requiring moderate switching speed. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design optimization, or manufacturing transitions.

Substiute Parts

CFRC304-G

Comchip TechnologyIn Stock: 874CFRC304-G Datasheet

Current PartRFQ

CURC304-G

Comchip TechnologyIn Stock: 3981CURC304-G Datasheet

Parametric EquivalentRFQ

ER3G-TP

Micro Commercial CoIn Stock: 42895ER3G-TP Datasheet

MFR RecommendedRFQ

ES3G-E3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 287205ES3G-E3/9AT Datasheet

MFR RecommendedRFQ

ES3GHE3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 2760ES3GHE3_A/H Datasheet

MFR RecommendedRFQ

RS3G-13-F

Diodes IncorporatedIn Stock: 29118RS3G-13-F Datasheet

MFR RecommendedRFQ

S3G

Diotec SemiconductorIn Stock: 14722S3G Datasheet

MFR RecommendedRFQ

S3G-13-F

Diodes IncorporatedIn Stock: 30503S3G-13-F Datasheet

MFR RecommendedRFQ

S3G-TP

Micro Commercial CoIn Stock: 6369S3G-TP Datasheet

MFR RecommendedRFQ

STTH3R04S

STMicroelectronicsIn Stock: 16982STTH3R04S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CFRC304-G are grouped based on strict electrical and mechanical compatibility criteria. All substitute candidates must meet the following mandatory parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 3 A
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: ±0.4 V tolerance
• Reverse Recovery Time (trr): ≤500 ns (fast recovery category)
• Current - Reverse Leakage @ Vr: ≤10 µA @ 400 V
• Operating Temperature - Junction: ≥150°C maximum rating

Substitute parts are classified as Parametric Equivalent or Manufacturer Recommended based on exact parameter matching and product status.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Parametric Equivalents (Recommended for New Designs):

CURC304-G (Comchip Technology) is a parametric equivalent with identical electrical specifications to CFRC304-G except for improved reverse recovery time (50 ns vs. 150 ns). This part is Active status and maintains all compliance certifications. Selection is appropriate when faster switching performance is beneficial without circuit redesign.

ER3G-TP (Micro Commercial Co) meets all critical parameters with superior reverse recovery time (35 ns) and lower forward voltage (1.25 V). Active status and high inventory availability (42,810 pcs) support production continuity. Suitable for applications where reduced power dissipation is advantageous.

ES3G-E3/9AT (Vishay General Semiconductor - Diodes Division) provides equivalent performance with lower forward voltage (1.1 V) and fast recovery characteristics (50 ns). Highest inventory availability (287,100 pcs) ensures supply security. Active status supports long-term design implementation.

ES3GHE3_A/H (Vishay General Semiconductor - Diodes Division) is identical to ES3G-E3/9AT with AEC-Q101 automotive qualification. Selection is mandatory for automotive applications requiring formal qualification documentation.

Tier 2 - Compatible Substitutes (Active Status, Acceptable for Existing Designs):

RS3G-13-F (Diodes Incorporated) matches CFRC304-G electrical specifications exactly with identical forward voltage (1.3 V) and reverse recovery time (150 ns). Active status and substantial inventory (29,100 pcs) support replacement applications. Packaging is Cut Tape (CT) & Digi-Reel® instead of Tape & Reel (TR).

Tier 3 - Standard Recovery Alternatives (Limited Application Scope):

S3G (Diotec Semiconductor) and S3G-13-F (Diodes Incorporated) employ standard recovery technology (>500 ns) rather than fast recovery. These parts are suitable only for low-frequency rectification where switching speed is not performance-critical. S3G-13-F is Active status; S3G status is Active.

Not Recommended for New Designs:

S3G-TP (Micro Commercial Co) carries "Not For New Designs" product status. Existing designs may continue using this part, but new applications should select from Tier 1 or Tier 2 alternatives.

STTH3R04S (STMicroelectronics) exhibits maximum forward voltage (1.5 V) at rated current, resulting in higher power dissipation compared to CFRC304-G. Selection is appropriate only when thermal design accommodates increased junction heating or when STMicroelectronics supply chain preference is specified.

Frequently Asked Questions (FAQ)

Q: Can CURC304-G replace CFRC304-G in existing designs without circuit modification?

A: Yes. CURC304-G is a parametric equivalent with identical voltage and current ratings, package, and mounting type. The improved reverse recovery time (50 ns vs. 150 ns) reduces switching losses and is backward compatible. No circuit changes are required.

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

A: Fast recovery diodes (trr ≤500 ns) are suitable for switching power supplies and high-frequency rectification. Standard recovery diodes (trr >500 ns) are appropriate for line-frequency rectification and low-speed applications. CFRC304-G is fast recovery; S3G and S3G-13-F are standard recovery. Application frequency determines which category is appropriate.

Q: Is ES3GHE3_A/H suitable for automotive applications?

A: Yes. ES3GHE3_A/H carries AEC-Q101 automotive qualification and is identical to ES3G-E3/9AT in electrical performance. This part is mandatory for designs requiring formal automotive component certification.

Q: Why does STTH3R04S have higher forward voltage than CFRC304-G?

A: Forward voltage variation (1.5 V vs. 1.3 V) reflects different semiconductor material properties and junction design between manufacturers. Higher forward voltage increases power dissipation at rated current. Thermal design must accommodate this difference.

Q: Can I use S3G-TP in new product designs?

A: No. S3G-TP carries "Not For New Designs" product status. Select from Tier 1 (CURC304-G, ER3G-TP, ES3G-E3/9AT, ES3GHE3_A/H) or Tier 2 (RS3G-13-F) alternatives for new designs.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1 (Unlimited)?

A: MSL 1 indicates the component has unlimited shelf life without moisture bake-out requirements. All listed substitutes maintain MSL 1, ensuring identical handling and storage procedures.

Q: Does packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) affect electrical performance?

A: No. Packaging format affects only supply chain logistics and automated assembly compatibility. Electrical performance is identical. Verify assembly equipment compatibility with the selected packaging format.

Q: Which substitute offers the lowest power dissipation at 3 A rated current?

A: ES3G-E3/9AT and ES3GHE3_A/H both specify 1.1 V forward voltage at 3 A, resulting in the lowest power dissipation (0.33 W) compared to CFRC304-G (0.39 W). ER3G-TP (1.25 V) provides intermediate dissipation (0.375 W).

Q: Are all listed substitutes ROHS3 compliant?

A: All Tier 1 and Tier 2 substitutes are ROHS3 compliant. S3G (Diotec Semiconductor) shows "Not applicable" RoHS status; verify compliance documentation with the manufacturer before selection.