SS35 R7G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS35 R7G is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design support and procurement.

The SS35 R7G operates across a junction temperature range of -55°C to 150°C and exhibits fast recovery characteristics with forward voltage of 750 mV at 3 A. The part is RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level).

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 50 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SS35 R7G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 3 A minimum
Technology: Schottky
Mounting Type: Surface Mount
Operating Temperature Range: Minimum -55°C to 150°C

Package Compatibility Considerations:

Primary equivalent: DO-214AB (SMC) package
Secondary equivalents: DO-214AC (SMA) and DO-214AA (SMB) packages with identical electrical ratings

Substitution Categories:

Parametric Equivalent (Identical Specifications): SS35 V7G from Taiwan Semiconductor Corporation matches all electrical parameters and package specifications of the SS35 R7G.

Direct Manufacturer Equivalents (Diodes Incorporated B350 Series): Parts B350-13-F, B350A-13-F, B350B-13-F, and B350Q-13-F provide 50 V / 3 A Schottky rectification with forward voltage of 700 mV at 3 A. These parts differ in package format (SMA, SMB, SMC) but maintain electrical compatibility within the 50 V / 3 A specification.

Similar Manufacturer Equivalents (Microchip Technology HSM Series): HSM350J/TR13 and HSM350JE3/TR13 provide 50 V / 3 A Schottky rectification with improved forward voltage characteristics (620 mV at 3 A) and lower reverse leakage (100 µA at 50 V). Operating temperature extends to 175°C.

Higher Current Alternatives (5 A Rating): B550C-13-F, B550CQ-13-F, and HSM550J/TR13 provide 50 V / 5 A Schottky rectification. These parts are suitable for applications requiring higher current capacity while maintaining 50 V reverse voltage rating.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Package	Tj (°C)	Product Status	RoHS Status
SS35 R7G	Taiwan Semiconductor	50	3	750 @ 3A	DO-214AB (SMC)	-55 to 150	Discontinued	ROHS3
SS35 V7G	Taiwan Semiconductor	50	3	750 @ 3A	DO-214AB (SMC)	-55 to 150	Discontinued	ROHS3
B350-13-F	Diodes Incorporated	50	3	700 @ 3A	DO-214AB (SMC)	-55 to 125	Active	ROHS3
B350A-13-F	Diodes Incorporated	50	3	700 @ 3A	DO-214AC (SMA)	-55 to 150	Active	ROHS3
B350B-13-F	Diodes Incorporated	50	3	700 @ 3A	DO-214AA (SMB)	-55 to 150	Active	ROHS3
B350Q-13-F	Diodes Incorporated	50	3	700 @ 3A	DO-214AB (SMC)	-55 to 150	Active	ROHS3
HSM350J/TR13	Microchip Technology	50	3	620 @ 3A	DO-214AB (SMC)	-55 to 175	Active	RoHS non-compliant
HSM350JE3/TR13	Microchip Technology	50	3	620 @ 3A	DO-214AB (SMC)	-55 to 175	Active	ROHS3
B550C-13-F	Diodes Incorporated	50	5	700 @ 5A	DO-214AB (SMC)	-55 to 150	Active	ROHS3
B550CQ-13-F	Diodes Incorporated	50	5	700 @ 5A	DO-214AB (SMC)	-55 to 150	Active	ROHS3
HSM550J/TR13	Microchip Technology	50	5	650 @ 5A	DO-214AB (SMC)	-55 to 175	Active	RoHS non-compliant

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

B350Q-13-F (Diodes Incorporated) is the preferred direct substitute for SS35 R7G. This part maintains identical electrical specifications (50 V / 3 A), uses the same DO-214AB (SMC) package, extends the operating temperature range to 150°C, and is currently in active production status with RoHS3 compliance. Inventory availability is 674 units.

Alternative for Identical Package and Specifications:

SS35 V7G (Taiwan Semiconductor Corporation) provides parametric equivalence with 2463 units in stock. This part is discontinued at DiGi Electronics but remains available through alternative distribution channels.

Package-Variant Alternatives (Same Electrical Rating):

B350A-13-F (SMA package) and B350B-13-F (SMB package) provide identical 50 V / 3 A electrical performance with extended temperature range to 150°C and active product status. These parts are suitable for applications where package footprint flexibility exists.

Higher Current Capacity Alternative:

B550CQ-13-F (Diodes Incorporated) provides 50 V / 5 A capability in the same DO-214AB (SMC) package with active status and RoHS3 compliance. This part is suitable for applications requiring current margin above the 3 A specification.

Extended Temperature Operation:

HSM350JE3/TR13 (Microchip Technology) extends operating temperature to 175°C while maintaining 50 V / 3 A specifications and RoHS3 compliance. This part is suitable for high-temperature applications.

Compliance Considerations:

All recommended substitutes maintain RoHS3 compliance except HSM350J/TR13 and HSM550J/TR13, which are RoHS non-compliant. Selection should account for end-product regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can B350-13-F replace SS35 R7G in all applications?

A: B350-13-F is electrically compatible with SS35 R7G for 50 V / 3 A Schottky rectification. However, the operating temperature range is limited to -55°C to 125°C compared to the SS35 R7G specification of -55°C to 150°C. Applications operating above 125°C junction temperature require alternative selection such as B350Q-13-F or HSM350JE3/TR13.

Q: What is the difference between B350-13-F, B350A-13-F, and B350B-13-F?

A: These three parts are electrically identical 50 V / 3 A Schottky diodes from Diodes Incorporated but differ in package format. B350-13-F uses DO-214AB (SMC), B350A-13-F uses DO-214AC (SMA), and B350B-13-F uses DO-214AA (SMB). Package selection depends on PCB layout and assembly equipment compatibility. B350-13-F and B350Q-13-F are recommended for direct replacement of SS35 R7G due to matching DO-214AB package.

Q: Why would I select a 5 A part like B550CQ-13-F instead of a 3 A part?

A: The B550CQ-13-F provides higher current capacity (5 A versus 3 A) while maintaining the same 50 V reverse voltage rating and DO-214AB package. This part is suitable for applications where current margin is required or where design flexibility allows for higher-rated components. The 5 A rating does not affect compatibility with 3 A circuit requirements.

Q: Are Microchip HSM350 parts suitable replacements for SS35 R7G?

A: HSM350J/TR13 and HSM350JE3/TR13 are electrically compatible 50 V / 3 A Schottky diodes with improved forward voltage characteristics (620 mV at 3 A versus 750 mV). Both parts extend operating temperature to 175°C. HSM350JE3/TR13 is RoHS3 compliant and recommended for applications requiring extended temperature operation. HSM350J/TR13 is RoHS non-compliant and requires compliance verification before selection.

Q: What is the significance of the forward voltage difference between parts?

A: Forward voltage (Vf) affects power dissipation and thermal performance. SS35 R7G specifies 750 mV at 3 A, while B350 series parts specify 700 mV at 3 A, and HSM350 parts specify 620 mV at 3 A. Lower forward voltage reduces power loss and heat generation. Parts with lower Vf are suitable for applications where thermal management is critical, provided all other electrical parameters remain compatible.

Q: Can I use HSM550J/TR13 (5 A) in place of SS35 R7G (3 A)?

A: HSM550J/TR13 is electrically compatible for 50 V reverse voltage and provides higher current capacity (5 A). This part is suitable for applications where current margin is required. However, HSM550J/TR13 is RoHS non-compliant, requiring compliance verification before selection in regulated applications.

Q: What packaging considerations apply when selecting a substitute?

A: The SS35 R7G uses DO-214AB (SMC) package. Direct package-compatible substitutes include B350-13-F, B350Q-13-F, B550C-13-F, B550CQ-13-F, HSM350J/TR13, HSM350JE3/TR13, and HSM550J/TR13. Alternative packages include B350A-13-F (SMA) and B350B-13-F (SMB). Package selection depends on PCB layout, assembly equipment, and thermal requirements. SMA and SMB packages have different footprints and thermal characteristics compared to SMC.

Q: Is SS35 V7G a suitable alternative to SS35 R7G?

A: SS35 V7G is a parametric equivalent with identical electrical specifications and DO-214AB package. However, both parts are discontinued at DiGi Electronics. While SS35 V7G has higher inventory availability (2463 units), it shares the same discontinuation status. For long-term supply assurance, active-status parts such as B350Q-13-F or HSM350JE3/TR13 are recommended.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message