Equivalent & Substitute Parts for 30CTH02

Part Overview

The Vishay 30CTH02 is a general-purpose diode array featuring a 1 Pair Common Cathode configuration rated for 200 V DC reverse voltage and 15 A average rectified current per diode. This component is part of the FRED Pt® series and is housed in a TO-220-3 through-hole package. The 30CTH02 is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within power rectification applications. Equivalent parts must satisfy the electrical specifications and mechanical form factor requirements to ensure direct or near-direct replacement capability.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	1.05	V @ 15 A
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Operating Temperature - Junction	-65 to 175	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the 30CTH02 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (mandatory)
Voltage - DC Reverse (Vr) (Max): 200 V (mandatory)
Current - Average Rectified (Io) (per Diode): 15 A (mandatory for full-current equivalents)
Mounting Type: Through Hole (mandatory)
Package / Case: TO-220-3 or compatible through-hole package (mandatory)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 1.05 V @ 15 A (preferred match)
Reverse Recovery Time (trr): 35 ns (preferred match)
Current - Reverse Leakage @ Vr: 10 µA @ 200 V (preferred match)
Operating Temperature - Junction: -65°C to 175°C (preferred match)

Substitute parts are classified into two categories:

Parametric Equivalents: Parts that match all primary substitution criteria and maintain identical or near-identical secondary parameters. These include VS-30CTH02-M3, VS-30CTH02HN3, SDUR3020CT, and SDUR3020WT.

Manufacturer Recommended Alternatives: Parts that satisfy primary substitution criteria but feature reduced current ratings (8 A instead of 15 A) or modified electrical characteristics. These include BYW51-200G, MUR1620CTG, and STTH3002CT. These alternatives are suitable for applications where the full 15 A current capacity is not required.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Product Status	RoHS Status
30CTH02	Vishay General Semiconductor - Diodes Division	200	15	1.05 @ 15 A	35	10 @ 200 V	175	TO-220-3	Obsolete	Non-compliant
VS-30CTH02-M3	Vishay General Semiconductor - Diodes Division	200	15	1.05 @ 15 A	35	10 @ 200 V	175	TO-220-3	Active	ROHS3 Compliant
VS-30CTH02HN3	Vishay General Semiconductor - Diodes Division	200	15	1.05 @ 15 A	35	10 @ 200 V	175	TO-220-3	Active	ROHS3 Compliant
SDUR3020CT	SMC Diode Solutions	200	15	1.05 @ 15 A	35	10 @ 200 V	150	TO-220-3	Active	ROHS3 Compliant
SDUR3020WT	SMC Diode Solutions	200	15	1.05 @ 15 A	35	10 @ 200 V	150	TO-247-3	Active	ROHS3 Compliant
STTH3002CT	STMicroelectronics	200	15	1.05 @ 15 A	22	20 @ 200 V	175	TO-220-3	Active	ROHS3 Compliant
BYW51-200G	onsemi	200	8	0.97 @ 8 A	35	10 @ 200 V	175	TO-220-3	Active	ROHS3 Compliant
MUR1620CTG	onsemi	200	8	0.975 @ 8 A	35	5 @ 200 V	175	TO-220-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Full 15 A Current Capacity):

The VS-30CTH02-M3 and VS-30CTH02HN3 are parametric equivalents manufactured by Vishay and provide identical electrical specifications to the obsolete 30CTH02. Both parts are active products with ROHS3 compliance. The VS-30CTH02-M3 is packaged in standard tube format, while the VS-30CTH02HN3 carries AEC-Q101 automotive qualification and is suitable for automotive-grade applications. The SDUR3020CT from SMC Diode Solutions maintains full 15 A current capacity and identical electrical parameters, with the exception of a reduced maximum junction temperature of 150°C compared to 175°C on the original part.

The STTH3002CT from STMicroelectronics provides full 15 A current capacity with identical forward voltage and junction temperature specifications. This part features a faster reverse recovery time of 22 ns compared to 35 ns on the 30CTH02, and a higher reverse leakage current of 20 µA at 200 V.

For Current-Limited Applications (8 A Current Capacity):

The BYW51-200G and MUR1620CTG from onsemi are manufacturer-recommended alternatives suitable for applications where the current requirement does not exceed 8 A per diode. Both parts maintain the 200 V reverse voltage rating, fast recovery speed classification, and 35 ns reverse recovery time. The MUR1620CTG features lower reverse leakage current of 5 µA at 200 V compared to 10 µA on the original part.

For Alternate Package Formats:

The SDUR3020WT from SMC Diode Solutions provides full 15 A current capacity in a TO-247-3 package instead of TO-220-3. This part is suitable for applications requiring a larger package footprint or improved thermal dissipation characteristics.

All recommended substitutes are active products with ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the VS-30CTH02-M3 be used as a direct replacement for the 30CTH02?

A: Yes. The VS-30CTH02-M3 is a parametric equivalent with identical electrical specifications: 200 V reverse voltage, 15 A average rectified current per diode, 1.05 V forward voltage at 15 A, 35 ns reverse recovery time, and -65°C to 175°C operating temperature range. Both parts use the TO-220-3 package. The primary difference is product status: the 30CTH02 is obsolete while the VS-30CTH02-M3 is active with ROHS3 compliance.

Q: What is the difference between VS-30CTH02-M3 and VS-30CTH02HN3?

A: Both parts are parametric equivalents with identical electrical specifications. The VS-30CTH02HN3 carries AEC-Q101 automotive qualification and is designated for automotive-grade applications. The VS-30CTH02-M3 is the standard industrial version. Selection depends on application requirements and automotive compliance needs.

Q: Can BYW51-200G or MUR1620CTG replace the 30CTH02 in all applications?

A: These parts are suitable only for applications where the current requirement does not exceed 8 A per diode. Both parts maintain the 200 V reverse voltage rating and fast recovery speed classification. If the application requires the full 15 A current capacity of the original 30CTH02, these alternatives are not appropriate.

Q: What is the significance of the SDUR3020WT TO-247-3 package?

A: The SDUR3020WT provides the same electrical specifications as the SDUR3020CT (200 V, 15 A, 1.05 V forward voltage) but in a larger TO-247-3 package instead of TO-220-3. The TO-247-3 package offers improved thermal dissipation characteristics and is suitable for applications requiring enhanced heat management. PCB layout and mounting hardware must accommodate the larger package footprint.

Q: How does the STTH3002CT compare to the 30CTH02?

A: The STTH3002CT maintains full electrical compatibility with 200 V reverse voltage and 15 A current capacity. It features a faster reverse recovery time of 22 ns compared to 35 ns on the 30CTH02, which reduces switching losses in high-frequency applications. The reverse leakage current is higher at 20 µA compared to 10 µA. Both parts operate to 175°C maximum junction temperature.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance status. The original 30CTH02 is RoHS non-compliant. If RoHS compliance is a design requirement, any of the recommended substitutes satisfy this criterion.

Q: What packaging options are available for 15 A rated diode arrays at 200 V?

A: The 15 A rated alternatives are available in two package formats: TO-220-3 (VS-30CTH02-M3, VS-30CTH02HN3, SDUR3020CT, STTH3002CT) and TO-247-3 (SDUR3020WT). The TO-220-3 package is the standard form factor matching the original 30CTH02. The TO-247-3 package provides larger lead spacing and improved thermal characteristics for applications requiring enhanced heat dissipation.

Q: What is the impact of reverse recovery time differences between substitute parts?

A: Reverse recovery time affects switching losses and electromagnetic interference characteristics in rectification circuits. The 30CTH02 and most substitutes feature 35 ns reverse recovery time. The STTH3002CT features 22 ns, which reduces switching losses in high-frequency applications. For standard 50/60 Hz rectification, this difference has minimal practical impact. For switching frequencies above 10 kHz, the faster recovery time of the STTH3002CT may provide efficiency benefits.

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