Equivalent & Substitute Parts for 20ETF06

Part Overview

The Vishay 20ETF06 is a general-purpose rectifier diode rated for 600 V DC reverse voltage and 20 A average rectified current in a TO-220AC through-hole package. This diode features fast recovery characteristics with a reverse recovery time of 160 ns and is designed for standard rectification applications. The 20ETF06 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. Active alternatives with identical or comparable electrical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	20	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 20 A	V
Reverse Recovery Time (trr)	160	ns
Current - Reverse Leakage @ Vr	100	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
Operating Temperature - Junction	-40 to 150	°C
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the 20ETF06 is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 20 A or greater
Mounting Type: Through Hole
Package / Case: TO-220-2 or TO-220AC compatible
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Considerations:

Reverse Recovery Time (trr): Lower values indicate improved performance
Forward Voltage (Vf): Lower values reduce power dissipation
Reverse Leakage Current: Lower values indicate better blocking characteristics
Product Status: Active status ensures ongoing availability
RoHS Compliance: ROHS3 compliance for regulatory alignment

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents (Identical Specifications) Parts that match all primary electrical parameters and maintain the same current rating of 20 A.

Category 2: Functional Alternatives (Reduced Current Rating) Parts with 600 V reverse voltage but lower current ratings (8 A to 15 A) suitable for applications where the full 20 A capacity is not required.

Category 3: Functional Alternatives (Increased Current Rating) Parts with 600 V reverse voltage and current ratings exceeding 20 A (30 A) for applications requiring higher current capacity.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
20ETF06	Vishay	600	20	1.3 @ 20 A	160	100 @ 600 V	TO-220AC	Obsolete	Non-compliant
VS-20ETF06-M3	Vishay	600	20	1.3 @ 20 A	160	100 @ 600 V	TO-220AC	Active	ROHS3 Compliant
VS-20ETF06THM3	Vishay	600	20	1.3 @ 20 A	160	100 @ 600 V	TO-220AC	Active	ROHS3 Compliant
APT15D60KG	Microchip Technology	600	15	1.8 @ 15 A	80	250 @ 600 V	TO-220-2	Active	ROHS3 Compliant
BYV29-600,127	WeEn Semiconductors	600	9	1.25 @ 8 A	60	50 @ 600 V	TO-220AC	Active	RoHS Compliant
DSEI12-06A	IXYS	600	14	1.7 @ 16 A	50	50 @ 600 V	TO-220AC	Active	ROHS3 Compliant
DSEI8-06A	IXYS	600	8	1.5 @ 8 A	50	20 @ 600 V	TO-220AC	Active	ROHS3 Compliant
DSEP15-06A	IXYS	600	15	2.04 @ 15 A	35	100 @ 600 V	TO-220AC	Active	ROHS3 Compliant
DSEP15-06B	IXYS	600	15	2.52 @ 15 A	30	100 @ 600 V	TO-220AC	Active	ROHS3 Compliant
DSEP29-06A	IXYS	600	30	1.61 @ 30 A	35	250 @ 600 V	TO-220AC	Active	ROHS3 Compliant
DSEP29-06B	IXYS	600	30	2.52 @ 30 A	30	250 @ 600 V	TO-220AC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

The VS-20ETF06-M3 and VS-20ETF06THM3 from Vishay are direct parametric equivalents to the 20ETF06. Both parts maintain identical electrical specifications including 600 V reverse voltage, 20 A average rectified current, 1.3 V forward voltage at 20 A, and 160 ns reverse recovery time. Both are active products with ROHS3 compliance. The VS-20ETF06THM3 carries AEC-Q101 automotive qualification, making it suitable for automotive applications. These parts are the primary choice for direct substitution.

Alternative Selection for Reduced Current Applications:

For applications where the full 20 A capacity is not required, the following active alternatives are available:

DSEI12-06A (IXYS): 14 A rating with 50 ns reverse recovery time and ROHS3 compliance
APT15D60KG (Microchip Technology): 15 A rating with 80 ns reverse recovery time and ROHS3 compliance
DSEP15-06A or DSEP15-06B (IXYS): 15 A rating with 35 ns or 30 ns reverse recovery time respectively, ROHS3 compliant, extended temperature range to 175°C
BYV29-600,127 (WeEn Semiconductors): 9 A rating with 60 ns reverse recovery time and RoHS compliance
DSEI8-06A (IXYS): 8 A rating with 50 ns reverse recovery time and ROHS3 compliance

Alternative Selection for Increased Current Applications:

For applications requiring current capacity exceeding 20 A:

DSEP29-06A or DSEP29-06B (IXYS): 30 A rating with 35 ns or 30 ns reverse recovery time respectively, ROHS3 compliant, extended temperature range to 175°C

Compliance Considerations:

All recommended substitute parts are ROHS3 compliant or RoHS compliant, addressing regulatory requirements that the obsolete 20ETF06 does not meet. All substitute parts maintain active product status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can VS-20ETF06-M3 or VS-20ETF06THM3 be used as a direct replacement for 20ETF06?

A: Yes. Both parts are parametric equivalents with identical electrical specifications: 600 V reverse voltage, 20 A average rectified current, 1.3 V forward voltage at 20 A, and 160 ns reverse recovery time. Both are active products with ROHS3 compliance. The VS-20ETF06THM3 includes AEC-Q101 automotive qualification.

Q: What is the difference between VS-20ETF06-M3 and VS-20ETF06THM3?

A: Both parts have identical electrical specifications. The VS-20ETF06THM3 carries AEC-Q101 automotive qualification and is designated as an automotive-grade component. Selection between them depends on application requirements.

Q: Can I use a lower-current-rated diode as a substitute?

A: Lower-current-rated diodes (8 A to 15 A) can be used only if the application circuit does not require the full 20 A capacity. The circuit must be verified to operate within the lower current rating. All lower-current alternatives maintain the 600 V reverse voltage specification and fast recovery characteristics.

Q: What are the advantages of IXYS DSEP series diodes over the 20ETF06?

A: IXYS DSEP series diodes offer significantly faster reverse recovery times (30 to 35 ns compared to 160 ns), extended operating temperature range to 175°C, and ROHS3 compliance. These improvements reduce switching losses and enable operation in higher-temperature environments. Current ratings range from 15 A to 30 A depending on the specific part number.

Q: Are all substitute parts compatible with the TO-220AC package footprint?

A: Yes. All recommended substitute parts use either TO-220AC or TO-220-2 package designations, which are mechanically and electrically compatible. The TO-220-2 and TO-220AC packages are interchangeable for through-hole mounting applications.

Q: Which substitute part should I select for a new design?

A: For new designs requiring 20 A capacity, select VS-20ETF06-M3 or VS-20ETF06THM3 for direct compatibility. For designs where current requirements are lower, IXYS DSEI or DSEP series diodes offer superior performance characteristics including faster recovery times and extended temperature ranges. All alternatives are active products with ROHS3 compliance.

Q: What is the impact of forward voltage differences between substitute parts?

A: Forward voltage differences directly affect power dissipation in the diode. Lower forward voltages reduce heat generation. For example, BYV29-600,127 has 1.25 V at 8 A, while DSEP15-06B has 2.52 V at 15 A. Circuit thermal design must account for these differences when selecting alternatives.

Q: Can I use a 30 A rated diode in place of the 20 A 20ETF06?

A: Yes. DSEP29-06A and DSEP29-06B are rated for 30 A and maintain 600 V reverse voltage. These parts are suitable for applications requiring higher current capacity or for designs where future current expansion is anticipated. No circuit modifications are required for this substitution.

Q: What does RoHS compliance mean for component selection?

A: RoHS compliance indicates the part does not contain restricted hazardous substances (lead, cadmium, mercury, etc.). All recommended substitute parts are either ROHS3 compliant or RoHS compliant, meeting current regulatory requirements. The original 20ETF06 is RoHS non-compliant.

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