SS16L RQG Equivalent & Substitute Parts

Part Overview

The SS16L RQG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 60 V DC reverse voltage and 1 A average rectified current in a Sub SMA surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative electrical or thermal characteristics. The SS16L RQG maintains parametric equivalence with several alternative part numbers across multiple manufacturers, enabling seamless design flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	400	µA @ 60 V
Mounting Type	Surface Mount	—
Package / Case	DO-219AB	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SS16L RQG is determined by strict parametric matching across the following critical criteria:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 60 V (maximum).

Current Rating: All substitute parts must support a minimum average rectified current of 1 A. Parts with higher current ratings (2 A) are functionally compatible but represent design margin increases.

Forward Voltage: Forward voltage drop at rated current must not exceed 700 mV @ 1 A for direct equivalence. Parts with higher current ratings may exhibit different forward voltage characteristics at their respective rated currents.

Package and Mounting: All substitute parts must utilize the DO-219AB package in surface mount configuration to ensure mechanical and electrical compatibility with existing PCB layouts.

Technology: All substitute parts employ Schottky diode technology, maintaining identical switching characteristics and recovery speed specifications.

Compliance: RoHS3 compliance is maintained across all substitute options.

Substitute parts are grouped into two categories:

Parametric Equivalents (Taiwan Semiconductor Corporation): SS16L R3G maintains identical electrical specifications and is manufactured by the same supplier, differing only in product status (discontinued at DiGi Electronics).

Similar Manufacturer Parts (Vishay General Semiconductor): SS1FH6-M3/H, SS1FH6HM3/H, and SS2FH6HM3/H provide functional equivalence with variations in reverse leakage current, capacitance specifications, and current ratings.

Parameter Comparison

Parameter	SS16L RQG	SS16L R3G	SS1FH6-M3/H	SS1FH6HM3/H	SS2FH6HM3/H
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V	60 V	60 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	2 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	780 mV @ 2 A
Speed	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Current - Reverse Leakage @ Vr	400 µA @ 60 V	400 µA @ 60 V	3 µA @ 60 V	3 µA @ 60 V	3 µA @ 60 V
Capacitance @ Vr, F	—	—	90 pF @ 4V, 1MHz	90 pF @ 4V, 1MHz	90 pF @ 4V, 1MHz
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Product Status	Active	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

Primary Equivalent: SS16L R3G is the direct parametric equivalent manufactured by Taiwan Semiconductor Corporation. This part maintains identical electrical specifications and package configuration. Selection of this part is appropriate when supply continuity from the original manufacturer is prioritized, despite its discontinued status at DiGi Electronics.

Active Inventory Alternative: SS1FH6-M3/H is manufactured by Vishay General Semiconductor and maintains full parametric compatibility with the SS16L RQG. This part exhibits superior reverse leakage characteristics (3 µA versus 400 µA) and extended operating temperature range (-55 to 175°C versus -55 to 150°C). Active product status and high inventory availability (360,400 units) support long-term supply chain reliability.

Automotive-Qualified Alternatives: SS1FH6HM3/H and SS2FH6HM3/H are both AEC-Q101 qualified for automotive applications. SS1FH6HM3/H provides direct 1 A equivalence with automotive certification. SS2FH6HM3/H offers increased current capacity (2 A) with automotive qualification, suitable for designs requiring additional thermal margin or higher current handling.

Selection Criteria:

For applications requiring exact parametric matching and standard industrial use, SS1FH6-M3/H is recommended due to active status and superior leakage characteristics.

For automotive applications requiring AEC-Q101 qualification, SS1FH6HM3/H provides equivalent performance with automotive certification.

For designs requiring increased current capacity with automotive qualification, SS2FH6HM3/H accommodates 2 A operation while maintaining 60 V reverse voltage rating.

All substitute parts maintain RoHS3 compliance and DO-219AB package compatibility.

Frequently Asked Questions (FAQ)

Q: Can SS16L R3G be used as a direct replacement for SS16L RQG?

A: Yes. SS16L R3G is a parametric equivalent with identical voltage rating (60 V), current rating (1 A), forward voltage (700 mV @ 1 A), and package configuration (DO-219AB). The primary distinction is product status; SS16L R3G is discontinued at DiGi Electronics while SS16L RQG remains active. Electrical performance is equivalent.

Q: What is the difference between the Taiwan Semiconductor and Vishay substitute options?

A: Taiwan Semiconductor parts (SS16L R3G) maintain identical specifications to the original SS16L RQG. Vishay parts (SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) offer superior reverse leakage characteristics (3 µA versus 400 µA), extended operating temperature range (175°C versus 150°C), and documented capacitance specifications. Vishay parts maintain active product status with higher inventory availability.

Q: Is SS2FH6HM3/H compatible with SS16L RQG applications?

A: SS2FH6HM3/H is functionally compatible for applications designed for 1 A operation. This part is rated for 2 A average rectified current, providing design margin and thermal headroom. The 60 V reverse voltage rating and DO-219AB package ensure mechanical and electrical compatibility. Forward voltage at 2 A operation is 780 mV, compared to 700 mV @ 1 A for the original part. For 1 A applications, forward voltage drop will be lower than the rated specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance. SS1FH6HM3/H and SS2FH6HM3/H additionally carry AEC-Q101 automotive qualification.

Q: What is the significance of the reverse leakage current difference between SS16L RQG and Vishay substitutes?

A: SS16L RQG specifies 400 µA reverse leakage at 60 V, while Vishay parts specify 3 µA at 60 V. Lower reverse leakage reduces standby power consumption and heat generation in applications with sustained reverse bias. This difference is significant in low-power or battery-operated designs but negligible in high-current rectification applications.

Q: Can these parts be used interchangeably on the same PCB without layout modifications?

A: Yes. All substitute parts utilize the DO-219AB package in surface mount configuration. PCB footprints, solder pad dimensions, and mounting requirements are identical. No layout modifications are required for mechanical compatibility.

Q: What is the operating temperature range difference, and does it affect selection?

A: SS16L RQG operates from -55 to 150°C junction temperature. Vishay substitutes operate from -55 to 175°C. The extended upper temperature limit in Vishay parts provides additional thermal margin in high-ambient or high-power applications. For standard industrial applications within -55 to 150°C, both ranges are equivalent.

Q: Are automotive-qualified parts necessary for non-automotive applications?

A: No. SS1FH6HM3/H and SS2FH6HM3/H carry AEC-Q101 automotive qualification, which exceeds standard industrial requirements. These parts are suitable for any application but are not required unless automotive certification is specified. SS1FH6-M3/H provides equivalent electrical performance without automotive qualification at potentially lower cost.

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