STTH8R06G Equivalent & Substitute Parts

Part Overview

The STTH8R06G is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 8 A average rectified current in a D2PAK surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The diode features fast recovery characteristics with a reverse recovery time of 45 ns, suitable for applications requiring efficient switching performance at moderate current levels.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	2.9 @ 8 A	V
Reverse Recovery Time (trr)	45	ns
Current - Reverse Leakage @ Vr	30	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STTH8R06G is determined by the following critical parameters: voltage rating (DC reverse voltage), current rating (average rectified current), package type (D2PAK surface mount), and speed classification (fast recovery). Parts are grouped into three categories based on their electrical compatibility with the original specification.

Category 1: Direct Voltage and Current Match (600 V, 8-9 A) Parts in this category maintain the 600 V reverse voltage rating and support 8 A or higher average rectified current. These parts are electrically compatible for applications requiring the original voltage and current specifications.

Category 2: Reduced Voltage Rating (500 V, 8 A) Parts with 500 V reverse voltage rating are suitable only for applications where the circuit operates below 500 V. These parts maintain the 8 A current rating and D2PAK package compatibility.

Category 3: Elevated Current Rating (600 V, 15-20 A) Parts with 600 V reverse voltage and higher current ratings (15 A or 20 A) provide additional current capacity while maintaining voltage compatibility. These parts are suitable for applications requiring higher current handling.

All substitute parts maintain the D2PAK surface mount package, fast recovery speed classification, and ROHS3 compliance status.

Parameter Comparison

Parameter	STTH8R06G (Main)	BYC8B-600,118	BYV29B-600,118	DSEI19-06AS-TRL	VS-ETL1506STRLHM3
Manufacturer	STMicroelectronics	WeEn Semiconductors	WeEn Semiconductors	IXYS	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	600 V	500 V	600 V	600 V	600 V
Current - Average Rectified (Io)	8 A	8 A	9 A	20 A	15 A
Voltage - Forward (Vf) (Max) @ If	2.9 V @ 8 A	2.9 V @ 8 A	1.25 V @ 8 A	1.7 V @ 16 A	1.07 V @ 15 A
Reverse Recovery Time (trr)	45 ns	52 ns	60 ns	50 ns	210 ns
Current - Reverse Leakage @ Vr	30 µA @ 600 V	150 µA @ 600 V	50 µA @ 600 V	50 µA @ 600 V	15 µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction (Max)	175°C	150°C	150°C	150°C	175°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BYV29B-600,118 (WeEn Semiconductors) This part provides the closest electrical match to the STTH8R06G with 600 V reverse voltage rating and 9 A average rectified current. The part is active in production status and RoHS compliant. The forward voltage is lower at 1.25 V @ 8 A compared to the original 2.9 V @ 8 A, resulting in reduced power dissipation. The reverse recovery time of 60 ns is slightly longer than the original 45 ns. This part is suitable for direct replacement in applications where the original voltage and current specifications are required.

DSEI19-06AS-TRL (IXYS) This part maintains 600 V reverse voltage rating with elevated current capacity of 20 A. The part is active in production status and ROHS3 compliant. The forward voltage of 1.7 V @ 16 A is lower than the original specification. The reverse recovery time of 50 ns is comparable to the original. This part is suitable for applications requiring higher current handling while maintaining the original voltage rating.

VS-ETL1506STRLHM3 (Vishay General Semiconductor) This part provides 600 V reverse voltage rating with 15 A average rectified current. The part is active in production status, ROHS3 compliant, and carries AEC-Q101 automotive qualification. The forward voltage of 1.07 V @ 15 A is significantly lower than the original specification, resulting in improved efficiency. The operating temperature range extends to 175°C maximum, matching the original part. The reverse recovery time of 210 ns is substantially longer than the original 45 ns. This part is suitable for applications requiring higher current capacity and automotive-grade reliability.

BYC8B-600,118 (WeEn Semiconductors) This part has a reduced voltage rating of 500 V with 8 A average rectified current. The part is active in production status and RoHS compliant. The forward voltage matches the original at 2.9 V @ 8 A. This part is suitable only for applications where the circuit operates below 500 V maximum reverse voltage.

Frequently Asked Questions (FAQ)

Q: Can BYC8B-600,118 be used as a direct replacement for STTH8R06G? A: BYC8B-600,118 has a reduced voltage rating of 500 V compared to the original 600 V. This part is suitable only for applications where the maximum reverse voltage does not exceed 500 V. For applications requiring the full 600 V rating, use BYV29B-600,118, DSEI19-06AS-TRL, or VS-ETL1506STRLHM3.

Q: What is the difference in forward voltage between the substitute parts and the original? A: The original STTH8R06G has a forward voltage of 2.9 V @ 8 A. BYV29B-600,118 has 1.25 V @ 8 A, DSEI19-06AS-TRL has 1.7 V @ 16 A, and VS-ETL1506STRLHM3 has 1.07 V @ 15 A. Lower forward voltage results in reduced power dissipation and improved thermal performance.

Q: Are all substitute parts available in the same D2PAK package? A: Yes, all substitute parts use the TO-263-3 D2PAK surface mount package with 2 leads plus tab. The package footprint and mounting requirements are identical across all parts listed.

Q: Which substitute part has the fastest reverse recovery time? A: The original STTH8R06G has a reverse recovery time of 45 ns. Among the substitutes, BYV29B-600,118 has 60 ns, DSEI19-06AS-TRL has 50 ns, and VS-ETL1506STRLHM3 has 210 ns. For applications requiring the fastest switching performance, DSEI19-06AS-TRL provides the closest match.

Q: Can higher current-rated parts like DSEI19-06AS-TRL or VS-ETL1506STRLHM3 be used in place of the 8 A rated original? A: Yes, higher current-rated parts are electrically compatible and can be used in applications designed for 8 A. The higher current rating provides additional design margin and thermal headroom. The D2PAK package remains the same across all parts.

Q: What is the operating temperature difference between the original and substitute parts? A: The original STTH8R06G operates to 175°C maximum junction temperature. BYC8B-600,118, BYV29B-600,118, and DSEI19-06AS-TRL operate to 150°C maximum. VS-ETL1506STRLHM3 operates to 175°C maximum, matching the original specification.

Q: Are all substitute parts RoHS compliant? A: Yes, all substitute parts are RoHS compliant. The original STTH8R06G and DSEI19-06AS-TRL and VS-ETL1506STRLHM3 are ROHS3 compliant. BYC8B-600,118 and BYV29B-600,118 are RoHS compliant.

Q: Which substitute part is recommended for automotive applications? A: VS-ETL1506STRLHM3 carries AEC-Q101 automotive qualification and is designated as automotive grade. This part is suitable for automotive applications requiring qualified components.

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