30ETH06 Equivalent & Substitute Parts

Part Overview

The 30ETH06 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600 V DC reverse voltage and 30 A average rectified current in a TO-220AC through-hole package. This component is classified as obsolete, indicating that direct replacement with active alternatives is necessary for new designs and ongoing production requirements. The FRED Pt® series technology provides fast recovery characteristics suitable for power conversion applications requiring efficient switching performance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	30	A
Voltage - Forward (Vf) (Max) @ If	2.6 @ 30	V @ A
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	50	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Through Hole	-
Package / Case	TO-220-2	-
Operating Temperature - Junction	-65 to 175	°C

Substitute Part Grouping Explanation

Substitution of the 30ETH06 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 30 A minimum
Mounting Type: Through Hole
Package / Case: TO-220-2 or compatible TO-220 variant
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitution Categories:

Direct Package Equivalents (TO-220AC): Parts maintaining identical TO-220AC packaging with 600 V / 30 A ratings qualify as direct substitutes. These include VS-30ETH06-M3 (Vishay, active status), DSEP29-06A and DSEP29-06B (IXYS, active status), and ISL9R3060P2 (onsemi, obsolete status).

Package Variant Equivalents (TO-247AD): The VS-30EPH06L-N3 maintains identical electrical specifications but uses TO-247AD packaging. This variant is suitable for applications where thermal management or board layout accommodates the larger package footprint.

Current-Reduced Alternatives: Parts with lower current ratings (LQA03TC600 at 3 A, LXA06T600 at 6 A, QH03TZ600 at 3 A, STTH12R06DIRG at 12 A) do not meet the 30 A requirement and are not suitable substitutes for the primary 30ETH06 application.

Compliance Status: Active product status is preferred for new designs. The 30ETH06 is obsolete; VS-30ETH06-M3 is the manufacturer-recommended replacement with ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V @ A]	trr [ns]	Ir @ Vr [µA @ V]	Package	Status	RoHS
30ETH06	Vishay	600	30	2.6 @ 30	35	50 @ 600	TO-220AC	Obsolete	Non-compliant
VS-30ETH06-M3	Vishay	600	30	2.6 @ 30	35	50 @ 600	TO-220AC	Active	ROHS3
VS-30EPH06L-N3	Vishay	600	30	2.6 @ 30	35	50 @ 600	TO-247AD	Active	ROHS3
DSEP29-06A	IXYS	600	30	1.61 @ 30	35	250 @ 600	TO-220AC	Active	ROHS3
DSEP29-06B	IXYS	600	30	2.52 @ 30	30	250 @ 600	TO-220AC	Active	ROHS3
FFP30S60STU	onsemi	600	30	2.6 @ 30	40	100 @ 600	TO-220-2L	Obsolete	ROHS3
ISL9R3060P2	onsemi	600	30	2.4 @ 30	45	100 @ 600	TO-220-2	Obsolete	ROHS3

Engineering Selection Recommendations

Primary Recommendation: VS-30ETH06-M3 (Vishay General Semiconductor - Diodes Division)

The VS-30ETH06-M3 is the manufacturer-recommended direct replacement for the obsolete 30ETH06. This part maintains identical electrical specifications (600 V, 30 A, 2.6 V forward voltage, 35 ns recovery time) and identical TO-220AC packaging. The part is active in production status and ROHS3 compliant, meeting current regulatory requirements. Inventory availability is confirmed at 824 pieces.

Secondary Recommendation: DSEP29-06B (IXYS)

The DSEP29-06B provides equivalent voltage and current ratings with active product status and ROHS3 compliance. This part features a lower forward voltage drop (2.52 V @ 30 A) and faster recovery time (30 ns) compared to the original 30ETH06, resulting in reduced power dissipation in switching applications. The TO-220AC package is identical. Inventory availability is confirmed at 2312 pieces.

Alternative Recommendation: DSEP29-06A (IXYS)

The DSEP29-06A offers the lowest forward voltage drop (1.61 V @ 30 A) among available 30 A / 600 V alternatives, providing superior efficiency in rectification circuits. Recovery time matches the original specification at 35 ns. Active status and ROHS3 compliance are confirmed. Inventory availability is confirmed at 1940 pieces.

Package Variant Option: VS-30EPH06L-N3 (Vishay General Semiconductor - Diodes Division)

For applications where thermal management or board layout requirements accommodate a larger package footprint, the VS-30EPH06L-N3 provides identical electrical performance in TO-247AD packaging. This variant is active in production and ROHS3 compliant. Inventory availability is confirmed at 2433 pieces.

Obsolete Alternatives Not Recommended for New Designs: FFP30S60STU (onsemi) and ISL9R3060P2 (onsemi) are both obsolete products. While electrically compatible, these parts should not be selected for new designs due to discontinued production status.

Frequently Asked Questions (FAQ)

Q: Can the LQA03TC600, LXA06T600, QH03TZ600, or STTH12R06DIRG be used as substitutes for the 30ETH06?

A: No. These parts do not meet the 30 A current requirement. LQA03TC600 and QH03TZ600 are rated for 3 A, LXA06T600 is rated for 6 A, and STTH12R06DIRG is rated for 12 A. The 30ETH06 requires a minimum 30 A average rectified current rating. Using an undersized diode will result in thermal failure and circuit malfunction.

Q: What is the difference between VS-30ETH06-M3 and DSEP29-06A?

A: Both parts meet the 600 V / 30 A specifications and use TO-220AC packaging. The primary differences are: (1) DSEP29-06A has lower forward voltage drop (1.61 V vs. 2.6 V), resulting in reduced power dissipation; (2) DSEP29-06A has higher reverse leakage current (250 µA vs. 50 µA); (3) VS-30ETH06-M3 is the direct Vishay replacement for the original 30ETH06. Selection depends on whether efficiency improvement or exact parameter matching is prioritized.

Q: Is the VS-30EPH06L-N3 a direct replacement for the 30ETH06?

A: The VS-30EPH06L-N3 is electrically equivalent but uses TO-247AD packaging instead of TO-220AC. The TO-247AD package is physically larger and has different pin spacing and mounting requirements. This part is suitable only if the application board layout and thermal management design accommodate the larger package footprint. Direct board-level substitution without layout modification is not possible.

Q: Why is the 30ETH06 listed as obsolete?

A: The 30ETH06 is no longer in active production by Vishay General Semiconductor - Diodes Division. Obsolete status indicates that the manufacturer has discontinued this product line. The VS-30ETH06-M3 is the active replacement product with identical specifications and improved compliance status (ROHS3).

Q: What does RoHS compliance mean for diode selection?

A: RoHS (Restriction of Hazardous Substances) compliance indicates that the component meets regulatory requirements restricting the use of specific hazardous materials. The original 30ETH06 is RoHS non-compliant. All recommended active substitutes (VS-30ETH06-M3, DSEP29-06A, DSEP29-06B) are ROHS3 compliant, meeting current regulatory standards for new equipment designs and production.

Q: Can I use FFP30S60STU or ISL9R3060P2 as replacements?

A: Both parts are electrically compatible with the 30ETH06 and meet the 600 V / 30 A specifications. However, both are classified as obsolete products. For new designs and ongoing production, active products (VS-30ETH06-M3, DSEP29-06A, DSEP29-06B) are strongly preferred to ensure long-term supply chain stability and compliance with current regulatory requirements.

Q: What is reverse recovery time and why does it matter?

A: Reverse recovery time (trr) is the time required for a diode to stop conducting after the applied voltage reverses polarity. The 30ETH06 specifies 35 ns. Faster recovery times (such as 30 ns in DSEP29-06B) reduce switching losses and improve efficiency in high-frequency rectification circuits. Slower recovery times (such as 45 ns in ISL9R3060P2) may increase power dissipation but do not prevent functional operation in standard applications.

Q: Are all recommended substitutes available in the same packaging?

A: VS-30ETH06-M3, DSEP29-06A, and DSEP29-06B all use TO-220AC packaging, which is mechanically and electrically compatible with the original 30ETH06. The VS-30EPH06L-N3 uses TO-247AD packaging, which requires different board layout and mounting considerations. Verify package compatibility with your application before selection.

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