SS110LHMHG Equivalent & Substitute Parts

Part Overview

The SS110LHMHG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100V DC reverse voltage and 1A 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). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design flexibility, or supply chain considerations.

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	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	50	µA @ 100 V
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the SS110LHMHG are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Substitutes): Parts that maintain identical electrical specifications (100V, 1A) and package format (DO-219AB). These parts satisfy all functional requirements of the main part and are interchangeable in circuit design.

Similar Parts (Functional Alternatives): Parts that share the same voltage rating (100V) and package (DO-219AB) but differ in current rating (2A) or reverse leakage characteristics. These parts operate within the same electrical class but provide enhanced performance margins in specific parameters.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 100V (mandatory match)
Package / Case: DO-219AB (mandatory match)
Mounting Type: Surface Mount (mandatory match)
Technology: Schottky (mandatory match)
Current - Average Rectified (Io): 1A minimum requirement
Operating Temperature Range: -55°C to 150°C minimum requirement

Parameter Comparison

Parameter	SS110LHMHG (Main)	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
Product Status	Active	Not For New Designs	Active	Active	Active	Active
Grade	Automotive	—	—	Automotive	—	Automotive
Qualification	AEC-Q101	—	—	AEC-Q101	—	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Parametric Equivalents):

SS110L is a parametric equivalent manufactured by Taiwan Semiconductor Corporation with identical electrical specifications (100V, 1A, 800mV forward voltage). However, SS110L carries a product status of "Not For New Designs," indicating this part is in mature phase and should not be selected for new circuit development. SS110L is suitable only for legacy system maintenance or replacement applications where the original part specification must be maintained.

Recommended Active Substitutes:

SS1FH10HM3/H and SS2FH10HM3/H, both manufactured by Vishay General Semiconductor, are recommended as primary substitutes for new designs. Both parts carry Active product status and maintain automotive-grade qualification (AEC-Q101).

SS1FH10HM3/H provides direct electrical equivalence to the SS110LHMHG (100V, 1A) with improved reverse leakage performance (5µA versus 50µA) and extended operating temperature range (-55°C to 175°C versus -55°C to 150°C). This part is suitable for direct replacement in existing designs.

SS2FH10HM3/H offers enhanced current capacity (2A versus 1A) while maintaining the same voltage rating (100V) and package format (DO-219AB). This part is suitable for applications requiring higher current margins or where design flexibility permits current rating upgrades. The forward voltage increases to 860mV at 2A operation.

Alternative Substitutes:

SS1FH10-M3/H and SS2FH10-M3/H are functionally equivalent to their HM3 counterparts but lack automotive-grade qualification. These parts are suitable for non-automotive applications where AEC-Q101 certification is not required.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the environmental regulatory requirements of the main part. Moisture sensitivity level (MSL 1 - Unlimited) is consistent across all parts, eliminating moisture handling constraints during substitution.

Frequently Asked Questions (FAQ)

Q: Can SS110L be used as a direct replacement for SS110LHMHG?

A: SS110L is electrically equivalent to SS110LHMHG with identical voltage (100V), current (1A), and forward voltage (800mV @ 1A) specifications. However, SS110L carries "Not For New Designs" product status. Use SS110L only for legacy system maintenance. For new designs, select SS1FH10HM3/H or SS2FH10HM3/H.

Q: What is the difference between SS1FH10HM3/H and SS1FH10-M3/H?

A: Both parts are manufactured by Vishay and share identical electrical specifications (100V, 1A, 800mV forward voltage) and package format (DO-219AB). The primary difference is automotive qualification: SS1FH10HM3/H carries AEC-Q101 certification and automotive-grade designation, while SS1FH10-M3/H does not. Select SS1FH10HM3/H for automotive applications.

Q: Can I use SS2FH10HM3/H (2A) in place of SS110LHMHG (1A)?

A: Yes. SS2FH10HM3/H is functionally compatible with SS110LHMHG. Both parts share the same voltage rating (100V), package format (DO-219AB), and mounting type (Surface Mount). The 2A current rating of SS2FH10HM3/H exceeds the 1A requirement of SS110LHMHG, providing additional performance margin. Forward voltage increases to 860mV at 2A operation. This substitution is suitable for applications where higher current capacity is acceptable.

Q: Are all substitute parts available in the same packaging options as SS110LHMHG?

A: SS110LHMHG is supplied in standard packaging (not specified in input). SS110L is available in Tape & Reel (TR). SS1FH10-M3/H is available in Tape & Reel (TR). SS1FH10HM3/H is available in Cut Tape (CT) & Digi-Reel®. SS2FH10-M3/H is available in Cut Tape (CT) & Digi-Reel®. SS2FH10HM3/H is available in Tape & Reel (TR). Verify packaging compatibility with your assembly process requirements.

Q: Do all substitute parts meet automotive qualification requirements?

A: No. Only SS1FH10HM3/H and SS2FH10HM3/H carry automotive-grade designation and AEC-Q101 qualification. SS110L, SS1FH10-M3/H, and SS2FH10-M3/H do not carry automotive qualification. For automotive applications, use only SS1FH10HM3/H or SS2FH10HM3/H.

Q: What is the operating temperature difference between SS110LHMHG and Vishay substitutes?

A: SS110LHMHG operates from -55°C to 150°C junction temperature. Vishay substitutes (SS1FH10-M3/H, SS1FH10HM3/H, SS2FH10-M3/H, SS2FH10HM3/H) operate from -55°C to 175°C. The extended upper temperature limit of Vishay parts provides additional thermal margin in high-temperature applications.

Q: How does reverse leakage current affect substitution?

A: SS110LHMHG specifies 50µA reverse leakage at 100V. Vishay substitutes specify 5µA reverse leakage, representing a 10-fold improvement. Lower reverse leakage reduces power dissipation and improves circuit efficiency. This difference is beneficial for substitution and does not create compatibility issues.

Q: Is the DO-219AB package identical across all parts?

A: Yes. All substitute parts use the DO-219AB package format, also designated as Sub SMA or SMF (Surface Mount Form) by manufacturers. This ensures mechanical and electrical compatibility for PCB assembly without layout modifications.

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