SS310LW RVG Equivalent & Substitute Parts

Part Overview

The SS310LW RVG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a surface mount SOD-123W package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain electrical performance across voltage, current, and thermal specifications while accommodating package and compliance requirements.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	850	mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	20	µA @ 100 V
Mounting Type	Surface Mount	—
Package / Case	SOD-123W	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SS310LW RVG are classified based on electrical parameter equivalence and package compatibility. The primary substitution criteria are:

Electrical Equivalence Requirements:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 3 A minimum
Voltage - Forward (Vf) (Max) @ If: 850 mV or lower at 3 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 20 µA or lower @ 100 V
Operating Temperature - Junction: -55°C to 150°C minimum range

Package Compatibility:

Mounting Type: Surface Mount
Package / Case: SOD-123W or mechanically equivalent variants (SOD-123FA, SOD-123HE)

Compliance Requirements:

RoHS3 Compliant
REACH Unaffected

Parts meeting these criteria are direct substitutes. Parts with higher reverse leakage current or different forward voltage characteristics are classified as similar alternatives with noted parameter deviations.

Parameter Comparison

Parameter	SS310LW RVG (Main)	SS310LW (MFR Recommended)	S310FA (Direct)	SS30100HE_R1_00001 (Similar)
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	onsemi	Panjit International Inc.
Product Status	Discontinued at DiGi Electronics	Active	Not For New Designs	Active
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A	850 mV @ 3 A	850 mV @ 3 A	800 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	20 µA @ 100 V	20 µA @ 100 V	100 µA @ 100 V	20 µA @ 100 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123W	SOD-123W	SOD-123W	SOD-123H
Operating Temperature - Junction	-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
Moisture Sensitivity Level (MSL)	—	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute: SS310LW (Taiwan Semiconductor Corporation)

The SS310LW is the manufacturer-recommended equivalent. It is electrically identical to the SS310LW RVG across all specified parameters and maintains Active product status with 37,028 units in stock. This part is the direct replacement for discontinued inventory and new production applications. MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage or handling.

Secondary Substitute: SS30100HE_R1_00001 (Panjit International Inc.)

The SS30100HE_R1_00001 meets all electrical requirements with an improved forward voltage specification (800 mV @ 3 A versus 850 mV @ 3 A), resulting in lower power dissipation. Active product status and 7,850 units in stock support availability. The SOD-123HE package is mechanically compatible with SOD-123W footprints in standard surface mount applications. This part is suitable for new designs and production where lower forward voltage is beneficial.

Tertiary Substitute: S310FA (onsemi)

The S310FA is classified as Not For New Designs but remains available with 23,400 units in stock. This part exhibits higher reverse leakage current (100 µA @ 100 V versus 20 µA @ 100 V), which increases standby power consumption. The SOD-123FA package is mechanically compatible with SOD-123W layouts. This part is restricted to legacy system maintenance and repair applications where design changes are not feasible. AEC-Q101 automotive qualification is present but does not offset the product status restriction.

Compliance Basis:

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original SS310LW RVG. Selection among substitutes is determined by product status (Active preferred), reverse leakage current performance, and forward voltage characteristics relative to circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can SS310LW be used as a direct replacement for SS310LW RVG?

A: Yes. The SS310LW is electrically and mechanically identical to the SS310LW RVG. Both parts share the same voltage rating (100 V), current rating (3 A), forward voltage (850 mV @ 3 A), reverse leakage (20 µA @ 100 V), and SOD-123W package. The SS310LW is Active and recommended for all applications where the discontinued SS310LW RVG was specified.

Q: What is the difference between SS30100HE_R1_00001 and SS310LW?

A: The SS30100HE_R1_00001 has a lower maximum forward voltage (800 mV @ 3 A versus 850 mV @ 3 A), reducing power dissipation by approximately 150 mW at full 3 A current. Both parts maintain identical voltage and current ratings, reverse leakage current, and operating temperature range. The package variant (SOD-123HE versus SOD-123W) is mechanically compatible for standard surface mount applications.

Q: Why is S310FA listed as Not For New Designs?

A: The S310FA exhibits higher reverse leakage current (100 µA @ 100 V versus 20 µA @ 100 V), increasing standby power consumption by 1.6 mW. This characteristic, combined with its product status restriction, limits its use to legacy system maintenance. New designs should utilize SS310LW or SS30100HE_R1_00001.

Q: Are the SOD-123W, SOD-123FA, and SOD-123HE packages interchangeable?

A: The SOD-123W, SOD-123FA, and SOD-123HE packages are mechanically compatible for standard surface mount PCB layouts. All three packages accommodate the same footprint dimensions and solder pad configurations. Component selection among these package variants is determined by electrical performance requirements and product availability rather than mechanical constraints.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: MSL 1 (Unlimited) indicates that the substitute parts have no moisture sensitivity constraints. Components can be stored and handled without time-limited exposure restrictions or baking requirements prior to reflow soldering. This classification applies to SS310LW and SS30100HE_R1_00001.

Q: Can these diodes be used in automotive applications?

A: The S310FA carries AEC-Q101 automotive qualification. The SS310LW and SS30100HE_R1_00001 do not list automotive qualification in the provided specifications. Automotive application requirements must be evaluated against specific design standards and supplier certifications beyond the parameters provided.

Q: What determines whether a part is a suitable substitute?

A: Substitution suitability is determined by: (1) Voltage - DC Reverse (Vr) rating of 100 V or higher, (2) Current - Average Rectified (Io) rating of 3 A or higher, (3) Forward voltage (Vf) of 850 mV or lower at 3 A, (4) Fast Recovery speed characteristic, (5) Reverse leakage current of 20 µA or lower at 100 V, (6) Operating temperature range of -55°C to 150°C, (7) Surface mount configuration, (8) SOD-123 package family compatibility, and (9) ROHS3 compliance.

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