SS110LHMQG Equivalent & Substitute Parts

Part Overview

The SS110LHMQG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 1 A average rectified current in a DO-219AB (Sub SMA) surface mount package. This component is classified as Active product status and carries automotive-grade qualification (AEC-Q101) with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility within the same application parameters. The substitute parts listed maintain the core electrical specifications while offering alternative sourcing options from both Taiwan Semiconductor Corporation and Vishay General Semiconductor - Diodes Division.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	800	mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	50	µA @ 100 V
Technology	Schottky	—
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with the SS110LHMQG:

Parametric Equivalent (Direct Substitutes): Parts that maintain identical electrical specifications across all critical parameters: 100 V reverse voltage, 1 A average rectified current, 800 mV forward voltage at 1 A, fast recovery speed, and DO-219AB package. These parts differ only in product status, packaging format (Tape & Reel vs. standard), or inventory availability. The SS110L from Taiwan Semiconductor Corporation qualifies as a parametric equivalent.

Similar Manufacturer Parts (Functional Alternatives): Parts that share the same 100 V reverse voltage and DO-219AB package but differ in one or more electrical parameters. These include:

SS1FH10-M3/H and SS1FH10HM3/H: Maintain 1 A current rating with improved reverse leakage (5 µA vs. 50 µA) and extended junction temperature range (-55°C to 175°C vs. -55°C to 150°C)
SS2FH10-M3/H and SS2FH10HM3/H: Rated for 2 A average rectified current with 860 mV forward voltage at 2 A, providing higher current capacity

All substitute parts maintain Schottky technology, fast recovery speed characteristics, surface mount configuration, RoHS3 compliance, and MSL 1 rating.

Parameter Comparison

Parameter	SS110LHMQG	SS110L	SS1FH10-M3/H	SS1FH10HM3/H	SS2FH10-M3/H	SS2FH10HM3/H
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 1 A	800 mV @ 1 A	800 mV @ 1 A	800 mV @ 1 A	860 mV @ 2 A	860 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	50 µA @ 100 V	50 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 10 V	5 µA @ 100 V
Capacitance @ Vr, F	—	—	70 pF @ 4V, 1MHz	70 pF @ 4V, 1MHz	70 pF @ 4V, 1MHz	70 pF @ 4V, 1MHz
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Grade	Automotive	—	—	Automotive	—	Automotive
Qualification	AEC-Q101	—	—	AEC-Q101	—	AEC-Q101
Product Status	Active	Not For New Designs	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Substitution (Identical Electrical Performance):

The SS110L from Taiwan Semiconductor Corporation is the only parametric equivalent to the SS110LHMQG. Both parts maintain 100 V reverse voltage, 1 A average rectified current, and 800 mV forward voltage specifications. However, SS110L carries a "Not For New Designs" product status, limiting its use to legacy system support or existing inventory management. Selection of SS110L is appropriate only when supply of the primary SS110LHMQG is unavailable and existing designs require identical electrical characteristics.

For Automotive and AEC-Q101 Qualified Applications:

The SS1FH10HM3/H and SS2FH10HM3/H from Vishay General Semiconductor - Diodes Division both carry automotive-grade designation and AEC-Q101 qualification, matching the compliance profile of the SS110LHMQG. Both parts are Active product status. The SS1FH10HM3/H maintains the 1 A current rating with improved reverse leakage performance (5 µA vs. 50 µA) and extended operating temperature range (-55°C to 175°C). The SS2FH10HM3/H provides 2 A current capacity for applications requiring higher current handling.

For General Industrial Applications:

The SS1FH10-M3/H and SS2FH10-M3/H from Vishay General Semiconductor - Diodes Division are Active status parts without automotive qualification. These parts are suitable for non-automotive surface mount applications where the 100 V / 1 A or 100 V / 2 A specifications align with circuit requirements.

Temperature Considerations:

All Vishay substitute parts extend the maximum junction temperature to 175°C compared to the SS110LHMQG specification of 150°C, providing thermal margin in high-temperature operating environments.

Frequently Asked Questions (FAQ)

Q: Can SS110L be used as a direct replacement for SS110LHMQG?

A: Electrically, yes. The SS110L maintains identical voltage (100 V), current (1 A), and forward voltage (800 mV @ 1 A) specifications. However, SS110L carries "Not For New Designs" status, restricting its use to legacy applications or inventory replacement scenarios. For new designs, Active status alternatives such as SS1FH10HM3/H are preferred.

Q: What is the difference between SS1FH10HM3/H and SS2FH10HM3/H?

A: Both parts share the same 100 V reverse voltage rating and DO-219AB package. The primary difference is current capacity: SS1FH10HM3/H is rated for 1 A average rectified current with 800 mV forward voltage, while SS2FH10HM3/H is rated for 2 A with 860 mV forward voltage. Selection depends on circuit current requirements. Both carry automotive qualification and AEC-Q101 certification.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed substitute parts use the DO-219AB (Sub SMA) package, which maintains identical mechanical dimensions and PCB land pattern compatibility. Surface mount assembly processes require no modification.

Q: What is the significance of the reverse leakage current difference between SS110LHMQG (50 µA) and Vishay alternatives (5 µA)?

A: Lower reverse leakage current indicates reduced parasitic current flow when the diode is reverse-biased. The Vishay parts exhibit one-tenth the leakage of the SS110LHMQG. This difference is relevant in high-impedance circuits or applications sensitive to standby power consumption. For standard rectification applications, both specifications are functionally acceptable.

Q: Can SS2FH10HM3/H be used in a circuit designed for 1 A operation?

A: Yes. The SS2FH10HM3/H is rated for 2 A maximum current, making it suitable for 1 A applications. The part operates within its electrical limits at reduced current levels. However, the forward voltage specification changes to 860 mV @ 2 A; at 1 A operation, actual forward voltage will be lower. Verify that circuit design accommodates this characteristic.

Q: What packaging formats are available for these substitute parts?

A: SS110LHMQG is supplied in standard packaging. SS110L is available in Tape & Reel (TR) format. Vishay parts are available in multiple formats: SS1FH10-M3/H and SS1FH10HM3/H in Cut Tape (CT) & Digi-Reel®, and SS2FH10-M3/H in Cut Tape (CT) & Digi-Reel®, with SS2FH10HM3/H in Tape & Reel (TR). Packaging selection depends on assembly process requirements and volume considerations.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts, including the main SS110LHMQG and all substitutes, carry ROHS3 Compliant status. All parts also maintain MSL 1 (Unlimited) moisture sensitivity rating, requiring no special storage or handling precautions.

Q: Which substitute part is recommended for automotive applications?

A: For automotive applications requiring AEC-Q101 qualification, select either SS1FH10HM3/H (1 A rating) or SS2FH10HM3/H (2 A rating), both from Vishay General Semiconductor - Diodes Division. Both parts carry automotive-grade designation and AEC-Q101 certification matching the compliance requirements of the SS110LHMQG.

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