RS3M R7 Equivalent & Substitute Parts

Part Overview

The RS3M R7 is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. Manufactured by Taiwan Semiconductor Corporation, this component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute diodes must maintain electrical and mechanical compatibility across voltage, current, recovery time, and package specifications.

Substiute Parts

RS3M R7

Taiwan Semiconductor CorporationIn Stock: 899RS3M R7 Datasheet

Current PartRFQ

RS3MH

Taiwan Semiconductor CorporationIn Stock: 3824RS3MH Datasheet

Parametric EquivalentRFQ

RS3MC

MDDIn Stock: 3843RS3MC Datasheet

Parametric EquivalentRFQ

RS3MC-HF

Comchip TechnologyIn Stock: 915RS3MC-HF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RS3M R7 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Primary Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 3 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 3 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Reverse Recovery Time (trr): 500 ns
• Mounting Type: Surface Mount
• Package / Case: DO-214AB, SMC
• Operating Temperature - Junction: -55°C to 150°C

Secondary Compatibility Factors:

• RoHS compliance status
• Moisture Sensitivity Level (MSL)
• Current - Reverse Leakage @ Vr characteristics

All identified substitute parts maintain identical primary electrical specifications and package configuration, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

RS3MH (Taiwan Semiconductor Corporation)

The RS3MH is an active product offering identical electrical specifications and package configuration to the RS3M R7. This part maintains ROHS3 compliance and carries automotive-grade qualification (AEC-Q101), providing enhanced reliability documentation for applications requiring automotive standards. The RS3MH is available in Tape & Reel packaging with 3757 units in stock, supporting high-volume procurement requirements.

RS3MC (MDD)

The RS3MC provides equivalent electrical performance with marginally improved reverse leakage characteristics (5 µA versus 10 µA @ 1000 V) and specified junction capacitance (60 pF @ 4V, 1MHz). This part is active and RoHS compliant with 3778 units in stock. The RS3MC is supplied in SMC package format with Tape & Reel packaging.

RS3MC-HF (Comchip Technology)

The RS3MC-HF delivers equivalent electrical specifications with improved reverse leakage (5 µA @ 1000 V) and lower junction capacitance (40 pF @ 4V, 1MHz) compared to the main part. This active product maintains ROHS3 compliance and is available in DO-214AB (SMC) package with 844 units in stock. The RS3MC-HF is suitable for applications where lower capacitance characteristics provide performance advantages.

All three substitute parts are active products with established supply availability, eliminating the procurement constraints associated with the discontinued RS3M R7.

Frequently Asked Questions (FAQ)

Q: Can the RS3MH, RS3MC, and RS3MC-HF be used interchangeably with the RS3M R7?

A: Yes. All three substitute parts maintain identical voltage (1000 V), current (3 A), forward voltage (1.3 V @ 3 A), recovery time (500 ns), and package specifications (DO-214AB, SMC). Direct substitution is supported for applications requiring these electrical and mechanical parameters.

Q: What is the difference between the RS3MH and RS3MC-HF?

A: Both parts meet the primary electrical specifications of the RS3M R7. The RS3MH is manufactured by Taiwan Semiconductor Corporation and carries AEC-Q101 automotive qualification. The RS3MC-HF is manufactured by Comchip Technology and features lower junction capacitance (40 pF versus unspecified for RS3MH). Selection depends on automotive qualification requirements and capacitance-sensitive circuit performance.

Q: Does the RS3MC have different compliance status than other substitutes?

A: The RS3MC carries RoHS compliance status, while the RS3M R7 and RS3MC-HF are ROHS3 compliant. All parts are REACH unaffected. For applications requiring ROHS3 certification specifically, the RS3MH or RS3MC-HF are preferred selections.

Q: Are there packaging differences between substitute parts?

A: All substitute parts use the same DO-214AB (SMC) surface mount package. The RS3MH, RS3MC, and RS3MC-HF are supplied in Tape & Reel (TR) packaging format, which is standard for high-volume surface mount assembly operations.

Q: What is the significance of the reverse leakage current difference between parts?

A: The RS3M R7 specifies 10 µA reverse leakage @ 1000 V, while RS3MC and RS3MC-HF specify 5 µA @ 1000 V. Both values are within acceptable ranges for general-purpose rectifier applications. Lower reverse leakage in RS3MC and RS3MC-HF may provide marginal advantages in high-impedance circuit configurations.

Q: Which substitute part has the best availability?

A: The RS3MC has the highest inventory level with 3778 units in stock, followed by RS3MH with 3757 units and RS3MC-HF with 844 units. All three parts are active products with established supply channels.