RS3B Equivalent & Substitute Parts

Part Overview

The RS3B is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a DO-214AB surface mount package. This component is classified as a fast recovery diode with a reverse recovery time of 150 ns, suitable for standard rectification applications requiring moderate voltage and current ratings.

The RS3B maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on parametric equivalence within the allowed electrical and mechanical specifications for this diode category.

Substiute Parts

RS3B

Taiwan Semiconductor CorporationIn Stock: 2315RS3B Datasheet

Current PartRFQ

RS3B R7G

Taiwan Semiconductor CorporationIn Stock: 1282RS3B R7G Datasheet

Parametric EquivalentRFQ

RS3B V7G

Taiwan Semiconductor CorporationIn Stock: 2175RS3B V7G Datasheet

Parametric EquivalentRFQ

RS3B-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 30373RS3B-E3/57T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RS3B are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V
• Current - Average Rectified (Io): 3 A
• Reverse Recovery Time (trr): 150 ns
• Current - Reverse Leakage @ Vr: 10 µA @ 100 V
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Equivalence Criteria:

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C

Compliance Equivalence Criteria:

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

All identified substitute parts maintain identical electrical performance within the specified parameters and are housed in the same DO-214AB surface mount package. Packaging format variations (Tape & Reel, Cut Tape, or Digi-Reel®) do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - RS3B-E3/57T:

The RS3B-E3/57T manufactured by Vishay General Semiconductor - Diodes Division is the recommended substitute for new designs and production applications. This part maintains Active product status, ensuring long-term availability and supply chain stability. The RS3B-E3/57T is electrically equivalent across all critical parameters and carries identical ROHS3 compliance and MSL 1 ratings. Inventory availability of 30,300 pieces supports production requirements. The forward voltage specification is rated at 1.3 V @ 2.5 A, which remains within acceptable operating margins for the 3 A current rating.

Secondary Selections - RS3B R7G and RS3B V7G:

The RS3B R7G and RS3B V7G are parametrically equivalent alternatives manufactured by Taiwan Semiconductor Corporation. Both parts are electrically identical to the main RS3B part and maintain full compliance certifications. However, both are marked as Discontinued at DiGi Electronics, indicating reduced long-term availability. These parts are suitable for replacement or repair applications where existing inventory exists but are not recommended for new production designs.

Packaging Considerations:

The main RS3B is supplied in Tape & Reel (TR) format. Substitute parts are available in Cut Tape (CT) or Cut Tape with Digi-Reel® formats. These packaging variations do not affect electrical or mechanical performance and are interchangeable for surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RS3B-E3/57T be used as a direct replacement for RS3B in existing designs?

A: Yes. The RS3B-E3/57T is electrically and mechanically equivalent to the RS3B. Both parts share identical voltage ratings (100 V), current ratings (3 A), reverse recovery time (150 ns), and package specifications (DO-214AB, SMC). The parts are interchangeable in surface mount applications without circuit modification.

Q: What is the difference between RS3B R7G and RS3B V7G?

A: RS3B R7G and RS3B V7G are electrically identical. The primary difference is packaging format: RS3B R7G is supplied in Cut Tape (CT), while RS3B V7G is available in both Cut Tape (CT) and Digi-Reel® formats. Both parts are discontinued at DiGi Electronics and should not be selected for new production designs.

Q: Why is RS3B-E3/57T preferred over RS3B R7G and RS3B V7G?

A: RS3B-E3/57T maintains Active product status, ensuring continued availability and supply chain support. RS3B R7G and RS3B V7G are both discontinued at DiGi Electronics, which limits long-term sourcing options. For new designs and ongoing production, RS3B-E3/57T is the appropriate selection.

Q: Are there any electrical performance differences between the main RS3B and RS3B-E3/57T?

A: The parts are electrically equivalent across all critical parameters: 100 V reverse voltage, 3 A average rectified current, 150 ns reverse recovery time, and 10 µA reverse leakage current. The forward voltage specification for RS3B-E3/57T is rated at 1.3 V @ 2.5 A, compared to 1.3 V @ 3 A for the main RS3B. This difference does not affect circuit performance within the 3 A operating range.

Q: Can packaging format (Tape & Reel vs. Cut Tape) affect compatibility?

A: No. Packaging format differences do not affect electrical or mechanical compatibility. The choice between Tape & Reel, Cut Tape, or Digi-Reel® formats is determined by assembly process requirements and handling preferences, not by circuit performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts (RS3B R7G, RS3B V7G, and RS3B-E3/57T) carry ROHS3 compliance certification and maintain MSL 1 (Unlimited) moisture sensitivity ratings, matching the main RS3B part.

Q: What is the operating temperature range for these diodes?

A: All parts in this equivalence group operate across a junction temperature range of -55°C to 150°C, supporting both industrial and commercial temperature environments.