S5B V6G Equivalent & Substitute Parts Reference

Part Overview

The S5B V6G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 5 A average rectified current in a surface mount DO-214AB (SMC) package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design and procurement requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter ranges for the application category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	5	A
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10	µA @ 100 V
Capacitance @ Vr, F	60	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of rectifier diodes in the general-purpose category is determined by the following critical parameters:

Voltage Rating Compatibility: The DC reverse voltage (Vr) must equal or exceed the main part specification. Both substitute parts maintain the 100 V rating, ensuring equivalent voltage stress capability.

Current Rating Compatibility: The average rectified current (Io) must meet or exceed the application requirement. The S5B from Diotec Semiconductor provides 8 A capability, exceeding the 5 A requirement. The UFS310J/TR13 from Microchip Technology provides 3 A, which is below the main part specification and represents a downgrade in current capacity.

Recovery Characteristics: The reverse recovery time (trr) and recovery speed classification determine switching behavior. The main part and Diotec S5B both specify standard recovery (>500 ns). The UFS310J/TR13 specifies fast recovery (≤500 ns, 30 ns trr), representing improved switching performance.

Package and Mounting: All parts utilize the DO-214AB (SMC) surface mount package, ensuring mechanical and thermal compatibility.

Compliance and Environmental Status: RoHS3 compliance and MSL ratings determine suitability for regulated manufacturing environments. The Diotec S5B maintains full compliance. The UFS310J/TR13 is RoHS non-compliant, restricting use in regulated applications.

Parameter Comparison

Parameter	S5B V6G (Main Part)	S5B (Diotec)	UFS310J/TR13 (Microchip)
Manufacturer	Taiwan Semiconductor Corporation	Diotec Semiconductor	Microchip Technology
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	5 A	8 A	3 A
Reverse Recovery Time (trr)	1.5 µs	1.5 µs	30 ns
Speed Classification	Standard Recovery (>500 ns)	Standard Recovery (>500 ns)	Fast Recovery (≤500 ns)
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature - Junction	-55 to 150 °C	-50 to 150 °C	-55 to 175 °C
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Non-Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not Applicable	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute: S5B (Diotec Semiconductor)

The Diotec S5B is the recommended direct substitute for the S5B V6G. This part maintains identical voltage and reverse recovery specifications while providing increased current capacity (8 A versus 5 A). The part is currently in active production status with 46,105 units in stock. Full ROHS3 compliance ensures compatibility with regulated manufacturing and procurement environments. The operating temperature range (-50 to 150 °C) encompasses the main part specification. Surface mount packaging in DO-214AB format provides identical board-level integration.

Secondary Substitute: UFS310J/TR13 (Microchip Technology)

The UFS310J/TR13 is a functional alternative for applications where current requirements do not exceed 3 A. This part provides superior switching performance through fast recovery characteristics (30 ns trr versus 1.5 µs). The extended operating temperature range (-55 to 175 °C) exceeds the main part specification. However, RoHS non-compliance restricts use in regulated manufacturing environments and procurement chains requiring environmental compliance certification. This part is suitable only for applications where RoHS compliance is not mandated and current capacity of 3 A is sufficient.

Frequently Asked Questions (FAQ)

Q: Can the Diotec S5B directly replace the S5B V6G in all applications?

A: Yes. The Diotec S5B maintains identical voltage rating (100 V), reverse recovery time (1.5 µs), reverse leakage current (10 µA @ 100 V), and package format (DO-214AB, SMC). The increased current rating (8 A versus 5 A) provides additional design margin without introducing incompatibility. ROHS3 compliance matches the original part specification.

Q: What are the limitations of the UFS310J/TR13 as a substitute?

A: The UFS310J/TR13 has two primary limitations. First, the average rectified current rating is 3 A, which is below the 5 A requirement of the main part. This part is suitable only for applications requiring 3 A or less. Second, RoHS non-compliance restricts use in regulated manufacturing environments and procurement chains requiring environmental compliance certification. The part is not suitable for applications subject to RoHS directives or equivalent environmental regulations.

Q: Are there differences in forward voltage characteristics between these parts?

A: The main part specification does not include forward voltage data. The Diotec S5B specifies 1.1 V @ 5 A. The UFS310J/TR13 specifies 950 mV @ 3 A. Forward voltage differences are typical between manufacturers and do not prevent substitution in general-purpose rectifier applications, provided the application does not have specific forward voltage constraints.

Q: Do all three parts use identical packaging?

A: Yes. All three parts use the DO-214AB (SMC) surface mount package. Mechanical compatibility, board-level integration, and thermal characteristics are identical across all parts.

Q: What is the significance of the recovery speed classification difference?

A: The main part and Diotec S5B both specify standard recovery (>500 ns, 1.5 µs trr). The UFS310J/TR13 specifies fast recovery (≤500 ns, 30 ns trr). Fast recovery reduces switching losses and improves efficiency in high-frequency applications. Standard recovery is suitable for line-frequency and low-frequency rectification. The choice between standard and fast recovery depends on application frequency requirements, not part compatibility.

Q: Is the Diotec S5B available in the same packaging format as the original part?

A: The Diotec S5B is supplied in Tape & Reel (TR) format, which is standard for surface mount component procurement. The original part packaging format is not specified in the provided data. Both formats are compatible with automated assembly processes and provide identical component functionality.

Q: What is the impact of the operating temperature range difference?

A: The main part specifies -55 to 150 °C. The Diotec S5B specifies -50 to 150 °C, which is a 5 °C reduction at the lower limit. For applications operating above -50 °C, this difference is not significant. The UFS310J/TR13 specifies -55 to 175 °C, providing extended low-temperature and high-temperature capability. Temperature range selection depends on application environment requirements.

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