RSFAL RUG Equivalent & Substitute Parts

Part Overview

The RSFAL RUG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 500 mA average rectified current. This surface mount component operates in the Sub SMA package (DO-219AB) and features fast recovery characteristics with a reverse recovery time of 150 ns. The part is classified as Active product status and is RoHS3 compliant.

Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when inventory constraints necessitate equivalent alternatives that maintain identical electrical performance and mechanical compatibility.

Substiute Parts

RSFAL RUG

Taiwan Semiconductor CorporationIn Stock: 693RSFAL RUG Datasheet

Current PartRFQ

RSFAL

Taiwan Semiconductor CorporationIn Stock: 9896RSFAL Datasheet

Parametric EquivalentRFQ

RSFAL RVG

Taiwan Semiconductor CorporationIn Stock: 7779RSFAL RVG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RSFAL RUG diode is determined by strict equivalence across all critical electrical parameters and mechanical compatibility. The following parameters establish the substitution criteria:

Electrical Parameters (Must Match Exactly):

• Voltage - DC Reverse (Vr) (Max): 50 V
• Current - Average Rectified (Io): 500 mA
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 500 mA
• Reverse Recovery Time (trr): 150 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 50 V
• Capacitance @ Vr, F: 4 pF @ 4V, 1MHz
• Operating Temperature - Junction: -55°C to 150°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: DO-219AB (Sub SMA)
• Mounting Type: Surface Mount
• Technology: Standard
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Compliance Parameters (Must Match Exactly):

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

Substitute parts differ only in packaging format (Tape & Reel or Cut Tape) and product status designation, while maintaining complete electrical and mechanical equivalence.

Parameter Comparison

Engineering Selection Recommendations

RSFAL RUG (Primary Part): This part maintains Active product status and is suitable for new design implementations. It is the preferred selection when available and when bulk packaging format is acceptable for manufacturing processes.

RSFAL (Substitute): This part number is electrically and mechanically identical to RSFAL RUG but carries a "Not For New Designs" product status designation. It is supplied in Tape & Reel (TR) packaging format. This part is suitable for replacement, repair, and legacy system applications where the Not For New Designs status does not restrict use. The TR packaging format accommodates automated pick-and-place assembly processes.

RSFAL RVG (Substitute): This part number maintains Active product status and is electrically and mechanically identical to RSFAL RUG. It is supplied in Cut Tape (CT) packaging format. This part is suitable for both new designs and replacement applications. The CT packaging format is appropriate for manual assembly or lower-volume production runs.

All three part numbers satisfy identical RoHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity requirements. Selection between these equivalents is determined by packaging format requirements and product status constraints specific to the application context.

Frequently Asked Questions (FAQ)

Q: Are RSFAL RUG, RSFAL, and RSFAL RVG electrically interchangeable?

A: Yes. All three part numbers are electrically identical. They share identical specifications for reverse voltage (50 V), average rectified current (500 mA), forward voltage (1.3 V @ 500 mA), reverse recovery time (150 ns), reverse leakage current (5 µA @ 50 V), and capacitance (4 pF @ 4V, 1MHz). Operating temperature range (-55°C to 150°C) is identical across all variants.

Q: What is the difference between RSFAL RUG, RSFAL, and RSFAL RVG?

A: The primary differences are packaging format and product status. RSFAL RUG is supplied in bulk packaging with Active status. RSFAL is supplied in Tape & Reel (TR) format with Not For New Designs status. RSFAL RVG is supplied in Cut Tape (CT) format with Active status. All three use the identical DO-219AB (Sub SMA) package and are mechanically compatible.

Q: Can RSFAL (Not For New Designs) be used in new circuit designs?

A: The Not For New Designs designation indicates the manufacturer's recommendation against using this part in new design implementations. However, the part remains electrically and mechanically equivalent. Use in new designs is a decision based on application-specific requirements and supply chain strategy.

Q: Which packaging format should I select?

A: Packaging format selection depends on manufacturing process requirements. Tape & Reel (TR) format is optimized for high-volume automated assembly. Cut Tape (CT) format is suitable for manual assembly or lower-volume production. Bulk packaging is appropriate for bench-level or prototype applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. RSFAL RUG, RSFAL, and RSFAL RVG are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH unaffected status.

Q: Can these diodes be used interchangeably in existing circuit boards?

A: Yes, provided the circuit board design accommodates the specific packaging format. All three parts use the identical DO-219AB (Sub SMA) package and are mechanically compatible with the same PCB footprint and solder reflow profiles.

Q: What is the reverse recovery time specification?

A: The reverse recovery time (trr) is 150 ns for all three part numbers. This fast recovery characteristic (≤ 500ns, > 200mA) is maintained across RSFAL RUG, RSFAL, and RSFAL RVG.