SS310L MQG Equivalent & Substitute Parts

Part Overview

The SS310L MQG 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 Sub SMA surface mount package (DO-219AB). This component is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives from qualified manufacturers. The substitute parts listed maintain electrical compatibility within the specified parameter ranges while offering different availability, packaging options, or product lifecycle status.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	100	µA @ 100 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 logic for the SS310L MQG is based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal 100 V
Package / Case: Must be DO-219AB (Sub SMA)
Mounting Type: Must be Surface Mount
Technology: Must be Schottky
RoHS Status: Must be ROHS3 Compliant

Current Rating Considerations: The SS310L MQG is rated for 3 A average rectified current. Substitute parts with lower current ratings (1 A or 2 A) are classified as similar alternatives rather than direct equivalents. These lower-rated parts operate within the same voltage class and package but have reduced current capacity. Parts with equal or higher current ratings maintain full electrical compatibility.

Forward Voltage Tolerance: Forward voltage specifications vary across manufacturers and current ratings. All listed substitutes operate within acceptable forward voltage ranges for Schottky diodes at their respective current ratings.

Temperature Range: The main part operates from -55°C to 150°C. Substitute parts from Vishay General Semiconductor operate from -55°C to 175°C, providing extended upper temperature capability.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max)	Package	Temp Range (°C)	Product Status	Packaging Format
SS310L MQG	Taiwan Semiconductor Corporation	100 V	3	850 mV @ 3 A	DO-219AB	-55 to 150	Active	—
SS310L	Taiwan Semiconductor Corporation	100 V	3	850 mV @ 3 A	DO-219AB	-55 to 150	Not For New Designs	Tape & Reel (TR)
SS1FH10-M3/H	Vishay General Semiconductor	100 V	1	800 mV @ 1 A	DO-219AB	-55 to 175	Active	Tape & Reel (TR)
SS1FH10HM3/H	Vishay General Semiconductor	100 V	1	800 mV @ 1 A	DO-219AB	-55 to 175	Active	Cut Tape (CT) & Digi-Reel®
SS2FH10-M3/H	Vishay General Semiconductor	100 V	2	860 mV @ 2 A	DO-219AB	-55 to 175	Active	Cut Tape (CT) & Digi-Reel®
SS2FH10HM3/H	Vishay General Semiconductor	100 V	2	860 mV @ 2 A	DO-219AB	-55 to 175	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalent (Parametric Match): The SS310L from Taiwan Semiconductor Corporation is the parametric equivalent to SS310L MQG, maintaining identical electrical specifications and package format. This part is available in Tape & Reel (TR) packaging. However, this part is classified as "Not For New Designs," indicating it is in end-of-life status. Selection of this part should be limited to legacy system support or existing inventory management.

Current-Reduced Alternatives (Vishay eSMP® Series): The Vishay General Semiconductor parts (SS1FH10-M3/H, SS1FH10HM3/H, SS2FH10-M3/H, SS2FH10HM3/H) are classified as similar alternatives. These parts share the same 100 V voltage rating and DO-219AB package but operate at reduced current ratings (1 A or 2 A versus 3 A). All Vishay alternatives are Active product status and ROHS3 compliant.

Packaging Considerations:

SS1FH10-M3/H and SS2FH10-M3/H are supplied in Cut Tape (CT) & Digi-Reel® format
SS1FH10HM3/H and SS2FH10HM3/H are supplied in Tape & Reel (TR) format
Manufacturing process requirements determine appropriate packaging selection

Automotive Qualification: SS1FH10HM3/H and SS2FH10HM3/H carry AEC-Q101 automotive qualification and are graded for automotive applications. Selection of these parts is appropriate for automotive or high-reliability applications.

Temperature Range Extension: Vishay alternatives provide extended operating temperature range (-55°C to 175°C) compared to the main part (-55°C to 150°C), offering 25°C additional upper temperature capability.

Frequently Asked Questions (FAQ)

Q: Can SS1FH10-M3/H or SS2FH10-M3/H be used as direct replacements for SS310L MQG?

A: These parts are compatible substitutes within the same voltage class and package format but operate at reduced current ratings (1 A and 2 A respectively, versus 3 A). Circuit design must accommodate the lower current capacity. All parts maintain the same 100 V reverse voltage rating and DO-219AB package.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Tape & Reel (TR) is a continuous reel format suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® provides smaller quantities on cut tape with optional reel format. Selection depends on manufacturing volume and assembly equipment compatibility.

Q: Why is SS310L marked as "Not For New Designs"?

A: This product status indicates the part is in end-of-life phase. Existing inventory remains available, but the manufacturer does not recommend this part for new circuit designs. New designs should utilize Active status alternatives such as Vishay eSMP® series parts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and are REACH unaffected, meeting the same environmental and regulatory requirements as the main part.

Q: What is the significance of AEC-Q101 qualification on SS1FH10HM3/H and SS2FH10HM3/H?

A: AEC-Q101 is an automotive electronics qualification standard. Parts carrying this qualification have undergone additional reliability testing and are approved for automotive applications. Selection of AEC-Q101 qualified parts is required for automotive circuit designs.

Q: Can I use a 1 A rated diode (SS1FH10 series) in a circuit designed for 3 A?

A: No. The circuit must be designed for the actual current rating of the selected component. Using a 1 A diode in a 3 A circuit will result in component failure. Current rating selection must match circuit requirements.

Q: What is the difference in forward voltage between the main part and Vishay alternatives?

A: SS310L MQG specifies 850 mV @ 3 A. Vishay SS1FH10 series specifies 800 mV @ 1 A, and SS2FH10 series specifies 860 mV @ 2 A. Forward voltage varies with current rating and manufacturer. Circuit designs must account for these variations in voltage drop calculations.

Q: Are there inventory differences between substitute parts?

A: Yes. Inventory levels vary significantly: SS310L MQG has 1,035 pieces, SS310L has 9,724 pieces, SS1FH10-M3/H has 25,110 pieces, SS1FH10HM3/H has 130,217 pieces, SS2FH10-M3/H has 14,554 pieces, and SS2FH10HM3/H has 21,232 pieces. Availability should be confirmed with suppliers for production requirements.

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