RS3DC-HF Equivalent & Substitute Parts

Part Overview

The RS3DC-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 200 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. This diode is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the same functional category.

Substiute Parts

RS3DC-HF

Comchip TechnologyIn Stock: 1031RS3DC-HF Datasheet

Current PartRFQ

RS3D-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 15280RS3D-E3/57T Datasheet

Parametric EquivalentRFQ

RS3DH

Taiwan Semiconductor CorporationIn Stock: 3987RS3DH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RS3DC-HF is valid when the replacement diode meets the following criteria:

Critical Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 3 A
• Reverse Recovery Time (trr): 150 ns
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 150°C

Critical Mechanical Parameters (Must Match):

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute parts RS3D-E3/57T and RS3DH satisfy all critical electrical and mechanical parameters. Minor variations in forward voltage specification and reverse leakage current remain within acceptable tolerance for general-purpose rectifier applications in this voltage and current class.

Parameter Comparison

Engineering Selection Recommendations

RS3D-E3/57T (Vishay General Semiconductor - Diodes Division): This substitute is electrically and mechanically equivalent to the RS3DC-HF. Both devices share identical reverse voltage, average rectified current, reverse recovery time, and operating temperature range. The forward voltage specification differs at the measurement point (2.5 A versus 3 A), but both maintain the 1.3 V maximum rating. This part is ROHS3 compliant with MSL 1 rating and carries REACH Unaffected status. Inventory availability is significantly higher (15,200 pcs) compared to the main part.

RS3DH (Taiwan Semiconductor Corporation): This substitute meets all critical electrical and mechanical parameters of the RS3DC-HF. The forward voltage specification matches exactly at 1.3 V @ 3 A. Reverse leakage current is specified at 10 µA @ 200 V, compared to 5 µA for the main part, which remains acceptable for general-purpose rectifier applications. This part carries AEC-Q101 automotive qualification and REACH Unaffected status, making it suitable for applications requiring automotive-grade components. ROHS3 compliance and MSL 1 rating are maintained. Inventory availability is 3,930 pcs.

Both substitute parts are Active status products with full compliance to RoHS3 and unlimited moisture sensitivity level. Selection between substitutes depends on supply availability, automotive qualification requirements, and specific application constraints.

Frequently Asked Questions (FAQ)

Q: Can RS3D-E3/57T be used as a direct replacement for RS3DC-HF?

A: Yes. Both devices are rated for 200 V reverse voltage, 3 A average rectified current, 150 ns reverse recovery time, and operate across -55°C to 150°C. Both use DO-214AB (SMC) surface mount packaging. The forward voltage specification differs at the measurement point but maintains the same 1.3 V maximum rating. Both are ROHS3 compliant with MSL 1 rating.

Q: Can RS3DH be used as a direct replacement for RS3DC-HF?

A: Yes. Both devices are rated for 200 V reverse voltage, 3 A average rectified current, 150 ns reverse recovery time, and operate across -55°C to 150°C. Both use DO-214AB (SMC) surface mount packaging. Forward voltage specifications match exactly at 1.3 V @ 3 A. Both are ROHS3 compliant with MSL 1 rating. RS3DH carries additional AEC-Q101 automotive qualification.

Q: What is the significance of the DO-214AB (SMC) package?

A: DO-214AB, also designated SMC (Surface Mount Case), is a standardized surface mount diode package. All three parts use this identical package, ensuring mechanical and electrical compatibility on printed circuit boards without requiring layout modifications or rework.

Q: Are there differences in reverse leakage current between these parts?

A: Yes. RS3DC-HF specifies 5 µA @ 200 V, while RS3D-E3/57T and RS3DH specify 10 µA @ 200 V. Both values are acceptable for general-purpose rectifier applications in this voltage and current class. Applications with stringent leakage requirements should specify RS3DC-HF.

Q: What does AEC-Q101 qualification on RS3DH indicate?

A: AEC-Q101 is an automotive electronics qualification standard. RS3DH meets this qualification, making it suitable for automotive applications requiring qualified components. RS3DC-HF and RS3D-E3/57T do not carry this designation but remain suitable for non-automotive general-purpose applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. RS3DC-HF, RS3D-E3/57T, and RS3DH are all ROHS3 compliant, confirming restriction of hazardous substances in accordance with RoHS3 standards.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All three parts carry this rating.