SS115L Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS115L is a surface mount Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 150 V DC reverse voltage and 1 A average rectified current. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part is available in Sub SMA (DO-219AB) packaging with fast recovery characteristics suitable for high-frequency switching applications.

Due to its discontinued design status, equivalent alternatives with active product status are necessary for new circuit implementations and long-term supply chain continuity. Substitute parts maintain identical electrical performance while offering improved availability and compliance with current manufacturing standards.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 1 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	50	µA @ 150 V
Mounting Type	Surface Mount	—
Package / Case	DO-219AB (Sub SMA)	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS115L are classified into two categories based on electrical equivalence and packaging configuration:

Category 1: Parametric Equivalents (Same Package - DO-219AB Sub SMA)

Parts SS115L M2G, SS115L MHG, SS115L MQG, SS115L MTG, SS115L R3G, SS115L RFG, SS115L RHG, and SS115L RQG maintain identical electrical specifications and package configuration to the original SS115L. These variants differ only in manufacturing date codes and tape reel configurations, representing the same design across different production batches. All are manufactured by Taiwan Semiconductor Corporation with active product status.

Category 2: Functional Equivalent (Alternative Package - SOD-123W)

Part SS115L W represents a functional equivalent with identical electrical ratings (150 V, 1 A, 900 mV forward voltage at 1 A) but utilizes SOD-123W surface mount packaging instead of Sub SMA. This part is recommended by the manufacturer as the primary substitute for new designs.

Substitution eligibility is determined by the following parameters:

Voltage - DC Reverse (Vr) (Max): 150 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 1 A (or 950 mV for SS115LW)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Schottky
Operating Temperature Range: -55°C to 150°C
RoHS3 Compliance
MSL 1 Rating

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Package	Product Status	Inventory (Pcs)
SS115L	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Not For New Designs	3400
SS115L M2G	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	878
SS115L MHG	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	1091
SS115L MQG	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	1161
SS115L MTG	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	966
SS115L R3G	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	642
SS115L RFG	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	641
SS115L RHG	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	768
SS115L RQG	Taiwan Semiconductor Corporation	150 V	1 A	900 mV @ 1 A	DO-219AB (Sub SMA)	Active	779
SS115LW	Taiwan Semiconductor Corporation	150 V	1 A	950 mV @ 1 A	SOD-123W	Active	6651

Engineering Selection Recommendations

For Direct Package Replacement (DO-219AB Sub SMA):

Select from the parametric equivalent variants SS115L M2G, SS115L MHG, SS115L MQG, SS115L MTG, SS115L R3G, SS115L RFG, SS115L RHG, or SS115L RQG. All variants maintain identical electrical specifications and package configuration, ensuring direct substitution without circuit board redesign. These parts carry active product status, providing long-term supply availability and compliance with current manufacturing standards. All variants are ROHS3 compliant with MSL 1 rating.

For New Design Implementation:

SS115LW is the manufacturer-recommended substitute for new circuit designs. This part provides identical electrical performance with 150 V reverse voltage rating and 1 A average rectified current. The forward voltage specification of 950 mV at 1 A represents a 50 mV increase compared to the original SS115L specification of 900 mV. This variance remains within acceptable operating margins for Schottky diode applications. SS115LW utilizes SOD-123W surface mount packaging, which differs from the original Sub SMA package and requires circuit board layout modification. This part is actively manufactured with higher inventory availability (6651 pcs) and is designated for new designs.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity) rating, ensuring compatibility with standard manufacturing and storage protocols. REACH status remains unaffected across all variants. ECCN classification is EAR99 for all parts.

Frequently Asked Questions (FAQ)

Q: Can SS115L M2G, MHG, MQG, MTG, R3G, RFG, RHG, or RQG be used as direct replacements for SS115L?

A: Yes. These variants are parametric equivalents with identical electrical specifications (150 V, 1 A, 900 mV forward voltage) and DO-219AB Sub SMA packaging. They require no circuit modifications and provide direct pin-for-pin compatibility. The suffix variations represent different manufacturing batches and tape reel configurations only.

Q: What is the difference between SS115L and SS115LW?

A: Both parts are 150 V, 1 A Schottky diodes with identical reverse voltage and current ratings. The primary differences are: (1) Package type—SS115L uses DO-219AB Sub SMA, while SS115LW uses SOD-123W; (2) Forward voltage—SS115L specifies 900 mV maximum at 1 A, while SS115LW specifies 950 mV maximum at 1 A; (3) Product status—SS115L is not for new designs, while SS115LW is active and recommended for new designs. Circuit board layout modification is required when substituting SS115LW for SS115L due to different package footprints.

Q: Why is SS115L marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new circuit implementations. Existing inventory remains available for legacy system support and repairs. For new designs, SS115LW or the active parametric equivalents (M2G, MHG, MQG, MTG, R3G, RFG, RHG, RQG) should be selected.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL 1 (unlimited) moisture sensitivity rating, meeting current environmental and manufacturing standards.

Q: What is the reverse leakage current specification for substitute parts?

A: SS115L and all parametric equivalents (M2G, MHG, MQG, MTG, R3G, RFG, RHG, RQG) specify 50 µA maximum reverse leakage at 150 V. SS115LW specifies 10 µA maximum reverse leakage at 150 V, representing improved leakage performance.

Q: Can SS115LW be used in existing circuit boards designed for SS115L?

A: No. SS115LW requires circuit board redesign due to different package footprints (SOD-123W versus DO-219AB Sub SMA). For direct board-level replacement without layout modification, use parametric equivalents SS115L M2G, MHG, MQG, MTG, R3G, RFG, RHG, or RQG.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across a junction temperature range of -55°C to 150°C, identical to the original SS115L specification.

Q: Which substitute part has the highest inventory availability?

A: SS115LW has the highest inventory with 6651 pieces in stock. Among parametric equivalents with identical packaging, SS115L MQG has the highest inventory with 1161 pieces.

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