Equivalent & Substitute Parts for 20ETF06STRL

Part Overview

The 20ETF06STRL is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600 V DC reverse voltage and 20 A average rectified current in a TO-263AB (D2PAK) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The 20ETF06STRL features fast recovery characteristics with a reverse recovery time of 160 ns and a maximum forward voltage of 1.3 V at 20 A. Current inventory of 742 pieces is available as new original stock.

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 @ 20 A	V
Reverse Recovery Time (trr)	160	ns
Current - Reverse Leakage @ Vr	100 µA @ 600 V	µA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Surface Mount	-
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	-
Operating Temperature - Junction	-40 to 150	°C
Product Status	Obsolete	-
RoHS Status	RoHS non-compliant	-

Substitute Part Grouping Explanation

Substitution of the 20ETF06STRL is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 20 A minimum
Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB or compatible variant
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: May vary within design tolerance
Reverse Recovery Time (trr): May be lower (faster) than original
Current - Reverse Leakage @ Vr: May be lower than original
Operating Temperature - Junction: May be higher than original
Product Status: Active status preferred over obsolete
RoHS Status: RoHS3 Compliant preferred for new designs

Substitute parts are grouped into two categories:

Category 1 - Parametric Equivalents (Exact Current Rating): Parts with 20 A average rectified current rating, matching the original specification exactly.

Category 2 - Functional Substitutes (Higher Current Rating): Parts with current ratings exceeding 20 A, providing enhanced capability while maintaining voltage and package compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Package	Tj (Max) [°C]	Product Status	RoHS Status
20ETF06STRL	Vishay	600	20	1.3 @ 20 A	160	100 @ 600 V	TO-263AB	150	Obsolete	RoHS non-compliant
VS-20ETF06S-M3	Vishay	600	20	1.3 @ 20 A	160	100 @ 600 V	TO-263AB	150	Active	ROHS3 Compliant
DSEI36-06AS-TUB	IXYS	600	37	1.6 @ 37 A	50	100 @ 600 V	TO-263AB	150	Active	ROHS3 Compliant
DSEP29-06AS-TRL	IXYS	600	30	1.61 @ 30 A	35	250 @ 600 V	TO-263AB	175	Active	ROHS3 Compliant
RFN20NS6STL	Rohm	600	20	1.55 @ 20 A	60	10 @ 600 V	TO-263AB	150	Active	ROHS3 Compliant
RFUS20NS6STL	Rohm	600	20	2.8 @ 20 A	35	10 @ 600 V	TO-263AB	150	Active	ROHS3 Compliant
STTH30L06G-TR	STMicroelectronics	600	30	1.55 @ 30 A	90	25 @ 600 V	TO-263AB	175	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Parametric Equivalent:

VS-20ETF06S-M3 (Vishay) is the direct parametric equivalent to the obsolete 20ETF06STRL. This part maintains 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. The critical advantage is active product status and ROHS3 compliance, making it suitable for new designs and long-term procurement. Packaging is identical (TO-263AB). Current inventory is 717 pieces.

Secondary Recommendations - Functional Substitutes with Enhanced Performance:

RFN20NS6STL (Rohm Semiconductor) provides exact current rating matching (20 A) with improved reverse recovery time (60 ns versus 160 ns) and significantly lower reverse leakage current (10 µA versus 100 µA). Forward voltage is slightly elevated at 1.55 V. This part is active and ROHS3 compliant. Inventory is 1360 pieces.

STTH30L06G-TR (STMicroelectronics) offers higher current capacity (30 A) with improved reverse recovery time (90 ns) and extended junction temperature rating (175°C). Forward voltage at rated current is 1.55 V @ 30 A. This part is active and ROHS3 compliant. Inventory is 1230 pieces.

DSEP29-06AS-TRL (IXYS HiPerFRED™ series) provides 30 A current capacity with superior reverse recovery time (35 ns) and extended junction temperature (175°C). Forward voltage is 1.61 V @ 30 A. This part is active and ROHS3 compliant. Inventory is 665 pieces.

DSEI36-06AS-TUB (IXYS FRED series) offers the highest current capacity (37 A) with fast reverse recovery (50 ns). Forward voltage is 1.6 V @ 37 A. This part is active and ROHS3 compliant. Inventory is 1778 pieces.

Compliance Consideration:

All recommended substitutes are ROHS3 compliant, addressing the non-compliance status of the original 20ETF06STRL. This is essential for new product designs and regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can VS-20ETF06S-M3 be used as a direct replacement for 20ETF06STRL?

A: Yes. VS-20ETF06S-M3 is a parametric equivalent with identical electrical specifications (600 V, 20 A, 1.3 V forward voltage, 160 ns reverse recovery time) and identical package (TO-263AB). The primary differences are active product status and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between parametric equivalents and functional substitutes?

A: Parametric equivalents (VS-20ETF06S-M3, RFN20NS6STL) maintain the exact 20 A current rating of the original part. Functional substitutes (STTH30L06G-TR, DSEP29-06AS-TRL, DSEI36-06AS-TUB) provide higher current ratings (30 A or 37 A) while maintaining 600 V voltage rating and TO-263AB package compatibility. Functional substitutes are suitable when circuit design permits higher current capacity.

Q: Are all substitute parts in the same package?

A: All substitute parts use TO-263-3 D2PAK variants (TO-263AB or TO-263AA). These packages are mechanically and electrically compatible for PCB mounting. Pinout and thermal characteristics are equivalent.

Q: What is the impact of different reverse recovery times?

A: Reverse recovery time (trr) affects switching speed and EMI characteristics. Shorter trr values (35 ns to 90 ns in substitutes) indicate faster switching compared to the original 160 ns. This generally reduces switching losses and EMI, providing performance improvement. Circuit operation remains compatible.

Q: Which substitute offers the best thermal performance?

A: DSEP29-06AS-TRL and STTH30L06G-TR both feature maximum junction temperature of 175°C, compared to 150°C for the original part. This provides 25°C additional thermal margin for high-temperature applications.

Q: Is RoHS compliance mandatory for substitution?

A: For new product designs and compliance with current regulations, ROHS3 compliance is required. All recommended substitutes are ROHS3 compliant. The original 20ETF06STRL is RoHS non-compliant and unsuitable for new designs.

Q: Can RFUS20NS6STL be used despite higher forward voltage?

A: RFUS20NS6STL has forward voltage of 2.8 V @ 20 A, significantly higher than the original 1.3 V. This elevated forward voltage increases power dissipation and heat generation. Use is limited to applications where thermal design accommodates this increase. Verify thermal budget before selection.

Q: What packaging options are available for these substitutes?

A: VS-20ETF06S-M3 is supplied in Tube packaging. RFN20NS6STL is supplied in Cut Tape (CT) & Digi-Reel®. STTH30L06G-TR is supplied in Cut Tape (CT) & Digi-Reel®. DSEP29-06AS-TRL is supplied in Tape & Reel (TR). DSEI36-06AS-TUB is supplied in Tube packaging. Select based on assembly process requirements.

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