STTH8BC060D Equivalent & Substitute Parts

Part Overview

The STTH8BC060D is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 8 A average rectified current in a TO-220AC through-hole package. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement.

The STTH8BC060D operates as a fast recovery diode with a reverse recovery time of 40 ns, suitable for standard rectification applications requiring moderate current handling at 600 V voltage levels. Substitution is required due to product discontinuation while maintaining electrical and mechanical compatibility with existing circuit designs.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	3.6 @ 8	V @ A
Reverse Recovery Time (trr)	40	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the STTH8BC060D is determined by the following critical parameters:

Voltage Compatibility: All substitute parts must maintain a minimum DC reverse voltage rating of 600 V to ensure safe operation within the original circuit design envelope.

Current Rating: Substitute parts must support the 8 A average rectified current requirement. Parts with equal or higher current ratings are electrically compatible.

Package and Mounting: All substitutes use through-hole mounting in TO-220-2 or equivalent TO-220AC configurations, ensuring mechanical and thermal interface compatibility.

Technology Classification: The STTH8BC060D is a standard silicon fast recovery diode. Substitutes include both standard silicon rectifiers and silicon carbide (SiC) Schottky diodes. SiC technology offers superior performance characteristics including lower forward voltage drop and zero reverse recovery time, while maintaining voltage and current compatibility.

Compliance and Status: All substitute parts are RoHS3 compliant with MSL 1 rating, matching the original part's environmental and regulatory requirements.

Parameter Comparison

Part Number	Manufacturer	Technology	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns]	Package	Status
STTH8BC060D	STMicroelectronics	Standard	600	8	3.6 @ 8A	40	TO-220AC	Obsolete
BYC15-600PQ	WeEn Semiconductors	Standard	600	15	3.2 @ 15A	18	TO-220AC	Active
C3D04060A	Wolfspeed, Inc.	SiC Schottky	600	13.5	1.8 @ 4A	0	TO-220-2	Active
C3D04065A	Wolfspeed, Inc.	SiC Schottky	650	13.5	1.8 @ 4A	0	TO-220-2	Active
C3D06060A	Wolfspeed, Inc.	SiC Schottky	600	19	1.8 @ 6A	0	TO-220-2	Active
C3D06060F	Wolfspeed, Inc.	SiC Schottky	600	7.5	1.8 @ 6A	0	TO-220-F2	Active
C3D06065A	Wolfspeed, Inc.	SiC Schottky	650	19	1.8 @ 6A	0	TO-220-2	Active
C3D08060A	Wolfspeed, Inc.	SiC Schottky	600	24	1.8 @ 8A	0	TO-220-2	Active
C3D08065A	Wolfspeed, Inc.	SiC Schottky	650	24	1.8 @ 8A	0	TO-220-2	Active
C3D10060A	Wolfspeed, Inc.	SiC Schottky	600	30	1.8 @ 10A	0	TO-220-2	Active
C3D10065A	Wolfspeed, Inc.	SiC Schottky	650	30	1.8 @ 10A	0	TO-220-2	Active

Engineering Selection Recommendations

Standard Silicon Rectifier Substitute:

The BYC15-600PQ from WeEn Semiconductors is an active standard silicon fast recovery diode with 600 V rating and 15 A current capacity. This part maintains technology parity with the STTH8BC060D while offering higher current headroom. The BYC15-600PQ is RoHS3 compliant and carries active product status, ensuring long-term availability and supply chain stability.

Silicon Carbide Schottky Substitutes:

The Wolfspeed Z-Rec® SiC Schottky diode series (C3D04060A, C3D06060A, C3D08060A, C3D10060A at 600 V; C3D04065A, C3D06065A, C3D08065A, C3D10065A at 650 V) provides superior electrical performance compared to standard silicon rectifiers. All SiC parts are active products with RoHS3 compliance and MSL 1 rating.

SiC Schottky diodes exhibit significantly lower forward voltage drop (1.8 V typical versus 3.6 V for the STTH8BC060D) and zero reverse recovery time, resulting in reduced power dissipation and improved switching characteristics. The C3D06060F variant uses a TO-220-F2 package configuration, which differs from the standard TO-220-2 footprint.

Current Rating Selection:

For direct current replacement at 8 A operation, the C3D06060F (7.5 A) provides the closest current match. For applications with current margin requirements, C3D08060A (24 A) or C3D10060A (30 A) offer substantial headroom while maintaining 600 V voltage compatibility.

Voltage Rating Selection:

The 600 V rated parts (C3D04060A, C3D06060A, C3D08060A, C3D10060A) match the original STTH8BC060D voltage specification. The 650 V variants (C3D04065A, C3D06065A, C3D08065A, C3D10065A) provide additional voltage margin for applications requiring enhanced overvoltage protection.

Frequently Asked Questions (FAQ)

Q: Can the BYC15-600PQ directly replace the STTH8BC060D?

A: Yes. The BYC15-600PQ maintains 600 V voltage rating, through-hole TO-220AC mounting, and fast recovery diode classification. The higher 15 A current rating provides design margin while remaining electrically compatible. Both parts are RoHS3 compliant with MSL 1 rating.

Q: What are the advantages of SiC Schottky substitutes over standard silicon rectifiers?

A: SiC Schottky diodes exhibit lower forward voltage drop (1.8 V versus 3.6 V at rated current), zero reverse recovery time (0 ns versus 40 ns), and lower reverse leakage current. These characteristics reduce power dissipation and improve switching performance in rectification circuits.

Q: Which SiC part is the best current match for the STTH8BC060D?

A: The C3D06060F is rated for 7.5 A, providing the closest current specification to the original 8 A rating. This part operates at 600 V and uses a TO-220-F2 package configuration.

Q: Are there package differences between substitute parts?

A: Most substitutes use standard TO-220-2 packages compatible with TO-220AC footprints. The C3D06060F uses a TO-220-F2 package, which is a full-pack variant of the TO-220-2 configuration. Verify PCB footprint compatibility before selection.

Q: Do all substitute parts meet the same compliance standards as the STTH8BC060D?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's environmental and regulatory requirements.

Q: What is the difference between 600 V and 650 V rated SiC diodes?

A: The 650 V variants provide 50 V additional reverse voltage margin compared to 600 V parts. Both ratings exceed the STTH8BC060D specification. Selection depends on circuit overvoltage protection requirements and design safety margins.

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

A: Yes. Diodes with current ratings equal to or greater than 8 A are electrically compatible. Higher current ratings provide design margin and do not degrade circuit performance. Verify thermal management and PCB layout remain adequate for the selected part.

Q: Is the STTH8BC060D still available for procurement?

A: The STTH8BC060D is classified as obsolete. Substitute parts with active product status (BYC15-600PQ and all Wolfspeed Z-Rec® parts) ensure long-term availability and supply chain continuity.

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