SS26LHMHG Equivalent & Substitute Parts

Part Overview

The SS26LHMHG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 60 V DC reverse voltage and 2 A average rectified current in a Sub SMA surface mount package. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	700	mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	400	µA @ 60 V
Package / Case	DO-219AB	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SS26LHMHG is determined by the following critical parameters:

Voltage Rating: All substitute parts maintain 60 V DC reverse voltage maximum, ensuring compatibility in circuits designed for this voltage class.

Current Rating: The SS26LHMHG is rated for 2 A average rectified current. Substitute parts are grouped into two categories: parametric equivalents matching 2 A rating (SS26L RVG) and similar parts with reduced 1 A rating (SS1FH6-M3/H, SS1FH6HM3/H). The 1 A variants are suitable only for applications where circuit current requirements do not exceed 1 A.

Package and Mounting: All substitute parts use DO-219AB package with surface mount technology, maintaining mechanical and thermal compatibility with the original design.

Forward Voltage: The SS26LHMHG specifies 700 mV maximum forward voltage at 2 A. The SS26L RVG matches this specification exactly. The SS2FH6HM3/H variant specifies 780 mV at 2 A, representing a 80 mV increase. The 1 A variants specify 700 mV at 1 A operation.

Reverse Leakage Current: The SS26LHMHG specifies 400 µA reverse leakage at 60 V. Vishay variants (SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) specify 3 µA at 60 V, representing significantly lower leakage characteristics.

Temperature Range: The SS26LHMHG operates from -55°C to 150°C junction temperature. Vishay substitute parts extend the upper limit to 175°C, providing broader thermal operating range.

Compliance and Qualification: The SS26LHMHG carries AEC-Q101 automotive qualification. The SS26L RVG does not specify AEC-Q101 qualification in provided data. The Vishay variants SS1FH6HM3/H and SS2FH6HM3/H include AEC-Q101 automotive qualification.

Parameter Comparison

Parameter	SS26LHMHG	SS26L RVG	SS1FH6-M3/H	SS1FH6HM3/H	SS2FH6HM3/H
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Vishay	Vishay	Vishay
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V	60 V	60 V
Current - Average Rectified (Io)	2 A	2 A	1 A	1 A	2 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 2 A	700 mV @ 2 A	700 mV @ 1 A	700 mV @ 1 A	780 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	400 µA @ 60 V	400 µA @ 60 V	3 µA @ 60 V	3 µA @ 60 V	3 µA @ 60 V
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	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
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q101 Qualification	Yes	Not specified	Not specified	Yes	Yes

Engineering Selection Recommendations

Parametric Equivalent - SS26L RVG: This Taiwan Semiconductor part provides direct electrical equivalence to the SS26LHMHG with identical voltage, current, and forward voltage specifications. Both parts maintain 60 V reverse voltage and 2 A current rating with 700 mV forward voltage at 2 A operation. The SS26L RVG is suitable for applications where the original part is unavailable and AEC-Q101 qualification is not a design requirement. Both parts share identical operating temperature range (-55°C to 150°C) and package specifications.

Automotive-Qualified Alternatives - SS1FH6HM3/H and SS2FH6HM3/H: These Vishay parts carry AEC-Q101 automotive qualification, matching the qualification level of the original SS26LHMHG. The SS2FH6HM3/H maintains the 2 A current rating with extended temperature range to 175°C. The forward voltage specification increases to 780 mV at 2 A, representing a 80 mV rise from the original specification. This voltage increase must be evaluated against circuit design margins. Both Vishay automotive-qualified parts demonstrate significantly lower reverse leakage current (3 µA versus 400 µA), which may provide improved performance in low-leakage applications.

Current-Limited Alternatives - SS1FH6-M3/H and SS1FH6HM3/H: These 1 A rated parts are suitable only for circuits where maximum average rectified current does not exceed 1 A. The SS1FH6-M3/H lacks specified AEC-Q101 qualification, while SS1FH6HM3/H includes automotive qualification. Both extend operating temperature to 175°C and provide 3 µA reverse leakage current. These parts are not suitable for direct replacement in 2 A applications.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 export classification. The SS26L RVG does not specify AEC-Q101 qualification in provided documentation; automotive applications requiring this qualification should use SS1FH6HM3/H or SS2FH6HM3/H.

Frequently Asked Questions (FAQ)

Q: Can the SS26L RVG directly replace the SS26LHMHG in all applications?

A: The SS26L RVG provides electrical equivalence with identical 60 V voltage rating, 2 A current rating, and 700 mV forward voltage specification. Both parts use DO-219AB surface mount packaging. However, the SS26L RVG does not specify AEC-Q101 automotive qualification in provided data. Applications requiring automotive qualification should use Vishay-qualified alternatives.

Q: What is the difference between the 1 A and 2 A rated substitute parts?

A: The SS1FH6-M3/H and SS1FH6HM3/H are rated for 1 A average rectified current, while the SS26LHMHG and SS2FH6HM3/H are rated for 2 A. The 1 A variants are suitable only for circuits where circuit current requirements do not exceed 1 A. Using a 1 A part in a 2 A application exceeds component ratings and is not permitted.

Q: Why do the Vishay substitute parts show lower reverse leakage current?

A: The SS26LHMHG specifies 400 µA reverse leakage at 60 V, while Vishay variants (SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) specify 3 µA at 60 V. This represents a difference in device design and manufacturing process between manufacturers. Lower leakage current may provide improved performance in applications sensitive to leakage, such as precision analog circuits or low-power standby modes.

Q: Is the 80 mV increase in forward voltage for SS2FH6HM3/H significant?

A: The SS2FH6HM3/H specifies 780 mV forward voltage at 2 A compared to 700 mV for the SS26LHMHG. This 80 mV increase must be evaluated against circuit design margins and power dissipation requirements. In low-voltage applications or circuits with tight voltage budgets, this increase may require design verification. In most standard rectifier applications, this difference is within acceptable operating margins.

Q: Can I use the SS1FH6HM3/H (1 A, automotive-qualified) instead of the SS26LHMHG (2 A, automotive-qualified)?

A: The SS1FH6HM3/H is rated for 1 A maximum average rectified current. Using this part in an application requiring 2 A operation exceeds the component's current rating and is not permitted. The SS1FH6HM3/H is suitable only for circuits where maximum current does not exceed 1 A.

Q: What is the temperature operating range difference between the original and substitute parts?

A: The SS26LHMHG operates from -55°C to 150°C junction temperature. The Vishay substitute parts (SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) extend the upper limit to 175°C. The SS26L RVG maintains the same -55°C to 150°C range as the original. Applications operating above 150°C junction temperature require the extended-range Vishay variants.

Q: Are all substitute parts in the same DO-219AB package?

A: Yes, all substitute parts use DO-219AB surface mount package, maintaining mechanical and thermal compatibility with the original SS26LHMHG design. No PCB layout modifications are required for package compatibility.

Q: Which substitute part should I use for automotive applications?

A: For automotive applications requiring AEC-Q101 qualification, use either SS1FH6HM3/H (1 A rated) or SS2FH6HM3/H (2 A rated), both manufactured by Vishay. The SS2FH6HM3/H maintains the 2 A current rating of the original part. The SS26L RVG does not specify AEC-Q101 qualification and is not suitable for automotive applications requiring this certification.

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