STTH30AC06CP Equivalent & Substitute Parts

Part Overview

The STTH30AC06CP is a general-purpose diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode rectifier with 600 V reverse voltage rating and 15 A average rectified current per diode. The device is packaged in TO-3PF through-hole format and features fast recovery characteristics with 55 ns reverse recovery time.

This part is classified as obsolete. Identifying equivalent and substitute components is necessary to support ongoing maintenance, repair, and redesign activities for legacy systems utilizing this rectifier diode array.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	1.95 @ 15 A	V
Reverse Recovery Time (trr)	55	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Diode Configuration	1 Pair Common Cathode	—
Package / Case	TO-3PF	—
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the STTH30AC06CP are grouped based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Diode Configuration: 1 Pair Common Cathode
Current - Average Rectified (Io) (per Diode): 15 A or greater
Voltage - Forward (Vf) (Max) @ If: 1.95 V or lower at rated current
Reverse Recovery Time (trr): 55 ns or faster
Current - Reverse Leakage @ Vr: 10 µA or lower at 600 V
Technology: Standard (Fast Recovery)
RoHS Status: ROHS3 Compliant

Packaging Considerations: Substitutes are classified into two categories: same-package equivalents (TO-3PF) and alternative-package substitutes (TO-247-3, TO-3P). Package selection depends on circuit board layout and thermal management requirements.

Parameter Comparison

Parameter	STTH30AC06CP	STTH30AC06CPF	STTH30AC06CWL	DHF30IM600QB
Manufacturer	STMicroelectronics	STMicroelectronics	STMicroelectronics	IXYS
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io) (per Diode)	15 A	15 A	15 A	30 A
Voltage - Forward (Vf) (Max) @ If	1.95 V @ 15 A	1.95 V @ 15 A	1.95 V @ 15 A	2.36 V @ 30 A
Reverse Recovery Time (trr)	55 ns	55 ns	55 ns	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	50 µA @ 600 V
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	Single Diode
Package / Case	TO-3PF	TO-3PF	TO-247-3	TO-3P
Operating Temperature - Junction	-65 to 175 °C	-65 to 175 °C	-65 to 175 °C	-55 to 150 °C
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

STTH30AC06CPF (Parametric Equivalent - Recommended Primary Substitute)

The STTH30AC06CPF is a parametric equivalent to the STTH30AC06CP. Both devices share identical electrical specifications, diode configuration, and package format (TO-3PF). The STTH30AC06CPF is classified as Active product status, ensuring long-term availability and supply chain continuity. This part is ROHS3 Compliant and carries the same operating temperature range (-65 to 175 °C). Direct pin-for-pin and functional replacement is supported without circuit modification.

STTH30AC06CWL (Package Alternative - TO-247-3)

The STTH30AC06CWL maintains identical electrical parameters and diode configuration as the main part but is housed in TO-247-3 package format. This substitute is suitable for applications where TO-247-3 footprint compatibility exists or where thermal management benefits of the larger package are advantageous. The part is Active status and ROHS3 Compliant. Circuit board layout modification is required for package substitution.

DHF30IM600QB (Higher Current Rating - IXYS Manufacturer)

The DHF30IM600QB is a single-diode rectifier rated at 30 A average rectified current, exceeding the 15 A specification of the main part. This device maintains 600 V reverse voltage rating and fast recovery characteristics (35 ns trr). The higher current rating provides design margin for applications with current headroom. However, this part features a single-diode configuration rather than the 1 Pair Common Cathode configuration of the main part, requiring circuit topology evaluation. Operating temperature range is -55 to 150 °C, which is narrower than the main part. The part is Active status and ROHS3 Compliant.

Frequently Asked Questions (FAQ)

Q: Can STTH30AC06CPF be used as a direct replacement for STTH30AC06CP?

A: Yes. The STTH30AC06CPF is a parametric equivalent with identical electrical specifications, diode configuration (1 Pair Common Cathode), and package format (TO-3PF). No circuit modifications are required. The primary difference is product status: STTH30AC06CPF is Active, while STTH30AC06CP is Obsolete.

Q: What is the difference between STTH30AC06CP and STTH30AC06CWL?

A: Both parts share identical electrical parameters and diode configuration. The primary difference is packaging: STTH30AC06CP uses TO-3PF package, while STTH30AC06CWL uses TO-247-3 package. TO-247-3 is a larger package with improved thermal characteristics. Circuit board layout modification is necessary for package substitution.

Q: Can DHF30IM600QB replace STTH30AC06CP in all applications?

A: DHF30IM600QB maintains the 600 V reverse voltage rating and fast recovery speed but differs in three critical aspects: (1) it is a single-diode device rather than a 1 Pair Common Cathode configuration, (2) it has 30 A current rating versus 15 A, and (3) operating temperature range is -55 to 150 °C versus -65 to 175 °C. Circuit topology compatibility must be verified before substitution.

Q: Are all substitute parts RoHS3 Compliant?

A: Yes. All substitute parts listed (STTH30AC06CPF, STTH30AC06CWL, and DHF30IM600QB) are ROHS3 Compliant, matching the compliance status of the main part STTH30AC06CP.

Q: What is the significance of the 1 Pair Common Cathode configuration?

A: This configuration indicates the diode array contains two diodes with a shared cathode terminal. This internal connection affects circuit topology and pin assignment. Substitutes must maintain this configuration unless circuit redesign is performed. The DHF30IM600QB is a single-diode device and does not provide this configuration.

Q: Which substitute offers the best long-term availability?

A: STTH30AC06CPF and STTH30AC06CWL are both classified as Active product status from STMicroelectronics, ensuring ongoing manufacturing and supply chain support. STTH30AC06CP is Obsolete and subject to discontinuation. DHF30IM600QB is also Active status from IXYS.

Q: How do forward voltage specifications compare across substitutes?

A: STTH30AC06CP, STTH30AC06CPF, and STTH30AC06CWL all specify 1.95 V maximum forward voltage at 15 A. DHF30IM600QB specifies 2.36 V maximum forward voltage at 30 A. Higher forward voltage results in increased power dissipation in rectifier circuits.

Q: What is the reverse recovery time difference between substitutes?

A: STTH30AC06CP, STTH30AC06CPF, and STTH30AC06CWL all specify 55 ns reverse recovery time. DHF30IM600QB specifies 35 ns, which is faster. Faster recovery time reduces switching losses in high-frequency applications.

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