8ETL06 Equivalent & Substitute Parts

Part Overview

The 8ETL06 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600 V DC reverse voltage and 8 A average rectified current in a TO-220AC through-hole package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure uninterrupted supply for applications requiring this diode's electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	1.05 @ 8 A	V
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Through Hole	-
Package / Case	TO-220-2	-
Supplier Device Package	TO-220AC	-
Operating Temperature - Junction	-65 to 175	°C

Substitute Part Grouping Explanation

Substitution of the 8ETL06 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
Current - Average Rectified (Io): Must equal or exceed 8 A
Mounting Type: Must be Through Hole
Package / Case: Must be TO-220-2 or compatible TO-220AC variant
Speed Classification: Must meet Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Forward voltage (Vf) characteristics
Reverse recovery time (trr)
Reverse leakage current
Operating temperature range
RoHS and REACH compliance status

Substitute parts are grouped into two categories:

Category 1 - Direct Parametric Equivalents: Parts with identical or near-identical electrical specifications and the same current rating (8 A).

Category 2 - Functional Alternatives: Parts with higher current ratings or different electrical characteristics that satisfy the minimum voltage and current requirements while maintaining TO-220AC package compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
8ETL06	Vishay	600	8	1.05 @ 8A	250	5 @ 600V	TO-220AC	Obsolete	Non-compliant
VS-8ETL06-M3	Vishay	600	8	1.05 @ 8A	250	5 @ 600V	TO-220AC	Active	ROHS3 Compliant
STTH8L06D	STMicroelectronics	600	8	1.3 @ 8A	105	8 @ 600V	TO-220AC	Active	ROHS3 Compliant
RFVS8TG6SGC9	Rohm Semiconductor	600	8	3 @ 8A	40	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
BYV29-600,127	WeEn Semiconductors	600	9	1.25 @ 8A	60	50 @ 600V	TO-220AC	Active	RoHS Compliant
STTH12R06DIRG	STMicroelectronics	600	12	2.9 @ 12A	45	45 @ 600V	TO-220AC ins	Active	ROHS3 Compliant
STTH506DTI	STMicroelectronics	600	5	3.6 @ 5A	25	6 @ 600V	TO-220AC ins	Active	ROHS3 Compliant
LXA06T600	Power Integrations	600	6	2.94 @ 6A	23	250 @ 600V	TO-220AC	Active	RoHS Compliant
QH03TZ600	Power Integrations	600	3	3 @ 3A	9.8	250 @ 600V	TO-220AC	Active	RoHS Compliant
LQA03TC600	Power Integrations	600	3	3.1 @ 3A	13	20 @ 600V	TO-220AC	Active	RoHS Compliant

Engineering Selection Recommendations

Recommended Primary Substitute: VS-8ETL06-M3

The VS-8ETL06-M3 is the direct equivalent to the 8ETL06, manufactured by the same supplier (Vishay General Semiconductor - Diodes Division). This part maintains identical electrical specifications including 600 V reverse voltage, 8 A average rectified current, 1.05 V forward voltage at 8 A, and 250 ns reverse recovery time. The VS-8ETL06-M3 is currently in active production status with 1275 units in stock and carries ROHS3 compliance certification, addressing the RoHS non-compliance limitation of the obsolete 8ETL06. This substitution requires no circuit redesign or thermal management adjustments.

Recommended Secondary Substitute: STTH8L06D

The STTH8L06D, manufactured by STMicroelectronics, provides an 8 A rated alternative with identical 600 V reverse voltage and TO-220AC package compatibility. This part features improved reverse recovery time (105 ns versus 250 ns), resulting in lower switching losses and reduced electromagnetic interference. The forward voltage is slightly elevated at 1.3 V compared to 1.05 V, which may result in marginally increased power dissipation. The STTH8L06D is active in production with ROHS3 compliance and 1420 units available.

Alternative for Higher Current Applications: STTH12R06DIRG

The STTH12R06DIRG, manufactured by STMicroelectronics, offers 12 A average rectified current with 600 V reverse voltage in an insulated TO-220AC package. This part is suitable for applications requiring current margin above the 8 A specification. The insulated package variant provides additional electrical isolation between the diode and the mounting surface. Reverse recovery time is 45 ns, significantly faster than the original 8ETL06. This part is active with ROHS3 compliance and 1300 units in stock.

Compliance Considerations:

All recommended substitutes carry active product status and RoHS compliance certifications (ROHS3 or RoHS Compliant), addressing the non-compliance status of the obsolete 8ETL06. All substitute parts maintain REACH Unaffected status and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can the VS-8ETL06-M3 be used as a direct drop-in replacement for the 8ETL06?

A: Yes. The VS-8ETL06-M3 is electrically and mechanically identical to the 8ETL06, with the same voltage rating (600 V), current rating (8 A), forward voltage (1.05 V @ 8 A), reverse recovery time (250 ns), and TO-220AC package. No circuit modifications are required. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q: What is the significance of the reverse recovery time (trr) parameter when selecting a substitute?

A: Reverse recovery time determines how quickly the diode transitions from conducting to blocking state. The 8ETL06 has a trr of 250 ns. Substitutes with lower trr values (such as STTH8L06D at 105 ns or RFVS8TG6SGC9 at 40 ns) reduce switching losses and electromagnetic interference, improving overall circuit efficiency. Substitutes with higher trr values may increase power dissipation and switching noise. Selection depends on the specific application requirements.

Q: Can I use the STTH12R06DIRG (12 A) instead of an 8 A rated diode?

A: Yes, provided the circuit design accommodates the higher current rating. The STTH12R06DIRG maintains the same 600 V reverse voltage and TO-220AC package footprint. The higher current rating provides operational margin and does not create compatibility issues. However, the insulated package variant (TO-220AC ins) differs from the standard TO-220AC, requiring verification of mounting surface isolation requirements in your specific application.

Q: What does "RoHS Compliant" or "ROHS3 Compliant" mean for this diode?

A: RoHS (Restriction of Hazardous Substances) compliance indicates that the component meets European Union regulations restricting the use of specific hazardous materials including lead, cadmium, and mercury. ROHS3 Compliant represents the current standard. The original 8ETL06 is RoHS non-compliant, while all recommended substitutes carry RoHS or ROHS3 compliance, making them suitable for applications subject to RoHS regulations.

Q: Are there current rating limitations when substituting the 8ETL06?

A: The 8ETL06 requires a minimum average rectified current (Io) of 8 A. Substitutes must meet or exceed this specification. Parts rated below 8 A (such as QH03TZ600 at 3 A or LXA06T600 at 6 A) are not suitable as direct replacements for applications requiring the full 8 A capability. Parts rated above 8 A (such as BYV29-600,127 at 9 A or STTH12R06DIRG at 12 A) are acceptable and provide current margin.

Q: What is the difference between TO-220AC and TO-220ACFP packages?

A: Both are through-hole TO-220 variants with identical pin spacing and mounting footprints. TO-220ACFP (as used in RFVS8TG6SGC9) includes a flat pin design, while standard TO-220AC uses round pins. Both are mechanically compatible with standard TO-220 PCB layouts. Verify your PCB design accommodates the specific pin geometry if switching between variants.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. The 8ETL06 has Vf of 1.05 V @ 8 A. Substitutes with higher Vf values (such as RFVS8TG6SGC9 at 3 V @ 8 A) result in increased power dissipation and heat generation. Substitutes with similar or lower Vf values (such as STTH8L06D at 1.3 V @ 8 A) maintain comparable thermal performance. Selection depends on thermal management capabilities and power budget constraints in your application.

Q: Is the insulated package variant (TO-220AC ins) compatible with standard TO-220AC PCB layouts?

A: Insulated package variants (such as STTH12R06DIRG and STTH506DTI) have identical external dimensions and pin spacing to standard TO-220AC packages, making them mechanically compatible with existing PCB layouts. The insulation layer provides electrical isolation between the diode case and the mounting surface. Verify that your application does not require direct electrical contact between the diode case and ground or other circuit nodes before substituting with an insulated variant.

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