Equivalent & Substitute Parts for RS3GC-HF

Part Overview

The RS3GC-HF 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 DO-214AB (SMC) surface mount package. This fast recovery diode is classified as Active product status and is ROHS3 compliant. Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when specific performance characteristics such as reverse recovery time or leakage current must be optimized for particular circuit applications.

Substiute Parts

RS3GC-HF

Comchip TechnologyIn Stock: 938RS3GC-HF Datasheet

Current PartRFQ

ES3G V7G

Taiwan Semiconductor CorporationIn Stock: 6450ES3G V7G Datasheet

Parametric EquivalentRFQ

HS3G R7G

Taiwan Semiconductor CorporationIn Stock: 929HS3G R7G Datasheet

Parametric EquivalentRFQ

HS3G V7G

Taiwan Semiconductor CorporationIn Stock: 1978HS3G V7G Datasheet

Parametric EquivalentRFQ

RS3G-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 7906RS3G-E3/57T Datasheet

Parametric EquivalentRFQ

RS3G-E3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 4472RS3G-E3/9AT Datasheet

Parametric EquivalentRFQ

RS3GH

Taiwan Semiconductor CorporationIn Stock: 4021RS3GH Datasheet

Parametric EquivalentRFQ

UF3G_R1_00001

Panjit International Inc.In Stock: 1887UF3G_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RS3GC-HF is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 3 A
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C
• Technology: Standard
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Performance Variation Parameters (Allowed Differences):

• Voltage - Forward (Vf) (Max) @ If: Acceptable range 1.3 V at 2.5 A to 1.3 V at 3 A
• Reverse Recovery Time (trr): Range 35 ns to 150 ns
• Current - Reverse Leakage @ Vr: Range 1 µA to 10 µA @ 400 V
• Capacitance @ Vr, F: Range 30 pF to 80 pF @ 4V, 1MHz
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) acceptable

All substitute parts listed maintain the core electrical specifications required for direct functional replacement while allowing for manufacturing variations and performance optimization within the defined parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

RS3G-E3/57T and RS3G-E3/9AT (Vishay General Semiconductor - Diodes Division) are recommended as primary substitutes. Both parts maintain Active product status, ensuring long-term availability and supply chain stability. These parts are supplied in Tape & Reel (TR) format, matching the packaging format of the RS3GC-HF. Both are ROHS3 compliant and REACH unaffected. The reverse recovery time of 150 ns matches the original specification exactly. Forward voltage is specified at 2.5 A rather than 3 A, and reverse leakage current is 10 µA compared to 5 µA in the original part, representing acceptable performance variations within the defined parameter range.

Secondary Substitutes (Active Product Status):

RS3GH (Taiwan Semiconductor Corporation) and UF3G_R1_00001 (Panjit International Inc.) are Active products suitable for substitution. RS3GH maintains identical electrical characteristics to the RS3GC-HF with 150 ns reverse recovery time and is supplied in Tape & Reel format. UF3G_R1_00001 offers superior reverse leakage current performance at 1 µA @ 400 V and faster reverse recovery time at 50 ns, with Active product status and Tape & Reel packaging.

Discontinued Alternatives (Limited Availability):

ES3G V7G, HS3G R7G, and HS3G V7G are listed as Discontinued at DiGi Electronics. These parts maintain electrical equivalence but are not recommended for new designs due to product status. These alternatives may be considered only when existing inventory is available and long-term supply is not a requirement.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory requirements of the RS3GC-HF. All parts operate across the identical temperature range of -55°C to 150°C junction temperature.

Frequently Asked Questions (FAQ)

Q: Can RS3G-E3/57T be used as a direct replacement for RS3GC-HF?

A: Yes. RS3G-E3/57T is a parametric equivalent with identical voltage and current ratings (400 V, 3 A), matching package (DO-214AB, SMC), and identical reverse recovery time (150 ns). The forward voltage specification differs only in the test current (2.5 A vs. 3 A), and reverse leakage current is 10 µA compared to 5 µA. These variations fall within acceptable substitution parameters for general-purpose rectifier applications.

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

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for automated assembly processes. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, typically for manual assembly or smaller production runs. Both formats contain identical components; the difference is in handling and assembly methodology. The RS3GC-HF is supplied in Tape & Reel format.

Q: Why does UF3G_R1_00001 have lower reverse leakage current (1 µA) compared to the RS3GC-HF (5 µA)?

A: Reverse leakage current variation within the specified range (1 µA to 10 µA @ 400 V) reflects manufacturing process differences between manufacturers. Lower leakage current represents improved performance and is acceptable for substitution. This characteristic may be advantageous in applications sensitive to leakage current.

Q: Are discontinued parts suitable for new product designs?

A: Discontinued parts such as ES3G V7G, HS3G R7G, and HS3G V7G are not recommended for new designs. Discontinued status indicates that manufacturers have ceased production, limiting long-term supply availability. New designs should utilize Active status parts such as RS3G-E3/57T, RS3G-E3/9AT, RS3GH, or UF3G_R1_00001 to ensure supply chain continuity.

Q: What does AEC-Q101 qualification on RS3GH indicate?

A: AEC-Q101 is an automotive electronics qualification standard. RS3GH carries this qualification, indicating suitability for automotive applications. This qualification is not present on other substitute parts listed. If automotive qualification is a design requirement, RS3GH is the appropriate selection.

Q: Can I substitute a part with faster reverse recovery time (lower trr)?

A: Yes. Faster reverse recovery time (lower trr value) represents improved performance and is acceptable for substitution. Parts with trr values of 35 ns, 50 ns, or 150 ns are all suitable replacements for the RS3GC-HF (150 ns). Faster recovery reduces switching losses and is generally beneficial in rectifier applications.

Q: What is the significance of the -55°C to 150°C operating temperature range?

A: This range specifies the junction temperature limits within which the diode operates according to specification. All substitute parts maintain this identical range, ensuring compatibility across thermal operating conditions. This parameter is critical for reliability in temperature-sensitive applications.

Q: Is ROHS3 compliance mandatory for substitution?

A: All substitute parts listed are ROHS3 compliant, matching the compliance status of the RS3GC-HF. ROHS3 compliance is a regulatory requirement in many markets and should be maintained during substitution to ensure product marketability and regulatory adherence.