RS1GL RUG Equivalent & Substitute Parts

Part Overview

The RS1GL RUG is a general-purpose fast recovery rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400V DC reverse voltage and 800mA average rectified current in a Sub SMA surface mount package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements permit variations in current rating, package form factor, or recovery speed characteristics while maintaining compatibility with the primary electrical specifications of 400V reverse voltage rating and surface mount mounting type.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	800	mA
Voltage - Forward (Vf) (Max) @ If	1.3 @ 800 mA	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Mounting Type	Surface Mount	—
Package / Case	DO-219AB	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the RS1GL RUG are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent Parts maintain identical or superior electrical specifications across all critical parameters: 400V reverse voltage rating, fast recovery speed (≤500ns), 150ns reverse recovery time, and surface mount mounting type. These parts are direct functional replacements with potential variations in current rating (800mA to 1A) and package form factor (Sub SMA to SOD-123FL).

Similar Parts share the 400V reverse voltage rating and surface mount mounting type but differ in current rating (700mA versus 800mA), recovery speed classification (Standard Recovery >500ns versus Fast Recovery ≤500ns), and reverse recovery time (1.8µs versus 150ns). These parts are suitable for applications where the lower current rating and slower recovery characteristics are acceptable within circuit design margins.

Substitution eligibility is determined by:

Voltage - DC Reverse (Vr) rating of 400V minimum
Surface mount mounting type
Operating temperature range of -55°C to 150°C minimum
RoHS3 compliance status

Parameter Comparison

Parameter	RS1GL RUG (Main)	RS1GL (SMC)	RS1GL R3G	S07G-GS08	S07G-GS18
Manufacturer	Taiwan Semiconductor Corporation	SMC Diode Solutions	Taiwan Semiconductor Corporation	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	800 mA	1 A	800 mA	700 mA	700 mA
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 800 mA	1.3 V @ 1 A	1.3 V @ 800 mA	1.1 V @ 1 A	1.1 V @ 1 A
Speed Classification	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Standard Recovery >500ns, >200mA	Standard Recovery >500ns, >200mA
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns	1.8 µs	1.8 µs
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	10 µA @ 400 V	10 µA @ 200 V
Capacitance @ Vr, F	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-219AB (Sub SMA)	SOD-123F (SOD-123FL)	DO-219AB (Sub SMA)	DO-219AB (SMF)	DO-219AB (SMF)
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

RS1GL (SMC Diode Solutions) is a parametric equivalent offering 1A current rating in SOD-123FL package form factor. This part maintains identical fast recovery speed (150ns) and reverse leakage characteristics. Selection is appropriate for applications requiring higher current capacity within the same voltage class. Package transition from Sub SMA (DO-219AB) to SOD-123FL requires PCB layout modification.

RS1GL R3G (Taiwan Semiconductor Corporation) is an exact parametric equivalent in identical Sub SMA package and 800mA current rating. This part is suitable for direct replacement with no package or thermal design changes required. Both parts share the same base product number RS1G and manufacturer origin.

S07G-GS08 and S07G-GS18 (Vishay General Semiconductor) are similar parts with 700mA current rating and standard recovery speed classification (1.8µs reverse recovery time). These parts are suitable for applications where the reduced current rating and slower recovery characteristics are within acceptable design margins. Both parts carry AEC-Q101 automotive qualification and are available in DO-219AB package matching the main part form factor. Selection of these parts is appropriate for cost-optimized designs or automotive-grade applications where the performance differential is acceptable.

All substitute parts maintain 400V reverse voltage rating, surface mount mounting type, -55°C to 150°C operating temperature range, and RoHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can RS1GL (SMC Diode Solutions) replace RS1GL RUG in all applications?

A: RS1GL from SMC Diode Solutions is a parametric equivalent with identical electrical specifications (400V, fast recovery 150ns, 5µA leakage). The primary difference is package form factor: SOD-123FL versus Sub SMA (DO-219AB). Substitution requires PCB layout modification to accommodate the different package footprint. Current rating increases from 800mA to 1A, providing additional margin.

Q: What is the difference between RS1GL R3G and RS1GL RUG?

A: RS1GL R3G is an exact parametric equivalent manufactured by Taiwan Semiconductor Corporation. Both parts share identical electrical specifications (400V, 800mA, 150ns recovery time) and Sub SMA package form factor. The primary difference is the revision designation (R3G versus RUG). Direct substitution is possible without PCB or thermal design modifications.

Q: Are S07G-GS08 and S07G-GS18 suitable replacements for the RS1GL RUG?

A: S07G-GS08 and S07G-GS18 are similar parts with 400V voltage rating and DO-219AB package compatibility. However, they differ in three key parameters: current rating (700mA versus 800mA), recovery speed (Standard Recovery >500ns versus Fast Recovery ≤500ns), and reverse recovery time (1.8µs versus 150ns). These parts are suitable only for applications where the lower current capacity and slower recovery characteristics are acceptable within circuit design margins. Both parts carry AEC-Q101 automotive qualification.

Q: What package considerations apply when substituting these diodes?

A: The RS1GL RUG uses Sub SMA package (DO-219AB). RS1GL R3G maintains identical Sub SMA packaging. RS1GL from SMC uses SOD-123FL package, requiring PCB footprint redesign. S07G-GS08 and S07G-GS18 use DO-219AB (SMF) package, which is mechanically compatible with Sub SMA but may have different land pattern specifications. Verify PCB layout compatibility before implementation.

Q: Which substitute part offers the best current capacity?

A: RS1GL from SMC Diode Solutions offers the highest current rating at 1A, compared to 800mA for the main part and 700mA for the Vishay parts. This provides the greatest design margin for current handling in applications approaching the rated current limits.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts (RS1GL from SMC, RS1GL R3G, S07G-GS08, and S07G-GS18) are RoHS3 compliant. The main part RS1GL RUG is also RoHS3 compliant. Environmental compliance is maintained across all substitution options.

Q: What is the significance of reverse recovery time differences?

A: The main part and parametric equivalents (RS1GL RUG, RS1GL from SMC, RS1GL R3G) feature fast recovery with 150ns reverse recovery time. The Vishay parts (S07G-GS08, S07G-GS18) have 1.8µs reverse recovery time, classified as standard recovery. Fast recovery diodes are suitable for high-frequency switching applications. Standard recovery diodes are appropriate for lower-frequency rectification circuits where the slower recovery does not impact performance.

Q: Can the Vishay S07G-GS08 or S07G-GS18 be used in high-frequency switching applications?

A: The Vishay parts feature standard recovery speed (1.8µs) compared to fast recovery (150ns) for the main part. In high-frequency switching applications, the slower recovery time may introduce additional switching losses and EMI. These parts are suitable for lower-frequency rectification circuits. Application-specific circuit analysis is required to determine acceptability in switching frequency ranges above 100kHz.

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