STTH15AC06CFP Equivalent & Substitute Parts

Part Overview

The STTH15AC06CFP is a fast recovery diode array manufactured by STMicroelectronics, configured as 1 pair common cathode with 600 V reverse voltage rating and 7.5 A average rectified current per diode. This component is packaged in TO-220-3 Full Pack through-hole configuration and is currently classified as obsolete. Due to its obsolete status, equivalent and substitute parts with active product status are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io) (per Diode)	7.5 A
Voltage - Forward (Vf) (Max) @ If	1.9 V @ 7.5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Operating Temperature - Junction	-65°C ~ 175°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the STTH15AC06CFP is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Diode Configuration: 1 Pair Common Cathode (electrical topology must match)
Voltage - DC Reverse (Vr) (Max): 600 V (voltage rating must be equal or greater)
Technology: Standard (fast recovery diode classification)
RoHS Status: ROHS3 Compliant (regulatory requirement)

Current Rating Considerations: Substitute parts are grouped based on current capacity relative to the original 7.5 A specification. Parts with equal or higher current ratings are electrically compatible for applications requiring the original current or less.

Package Compatibility: The original part uses TO-220-3 Full Pack through-hole configuration. Substitute parts may use alternative through-hole packages (TO-220FP, ISOPLUS220™) that accommodate the same electrical topology and mounting methodology.

Product Status: The STTH15AC06CFP is obsolete. Active product status substitutes ensure long-term availability and supply chain continuity.

Parameter Comparison

Parameter	STTH15AC06CFP (Main)	STTH16L06CFP (MFR Recommended)	DSEC29-06AC (Similar)	DSEC59-06BC (Similar)
Manufacturer	STMicroelectronics	STMicroelectronics	IXYS	IXYS
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io) (per Diode)	7.5 A	8 A	15 A	30 A
Voltage - Forward (Vf) (Max) @ If	1.9 V @ 7.5 A	1.8 V @ 8 A	2.03 V @ 15 A	2.51 V @ 30 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns	55 ns	35 ns	30 ns
Operating Temperature - Junction	-65°C ~ 175°C	175°C (Max)	-55°C ~ 175°C	-40°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3 Full Pack	TO-220-3 Full Pack	ISOPLUS220™	ISOPLUS220™
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

STTH16L06CFP (STMicroelectronics) - Manufacturer Recommended Substitute

The STTH16L06CFP is the primary recommended substitute. It maintains identical electrical topology (1 pair common cathode), voltage rating (600 V), and package family (TO-220-3 Full Pack). The current rating increases from 7.5 A to 8 A, providing marginal headroom for the same application envelope. Forward voltage is reduced to 1.8 V @ 8 A, indicating improved efficiency characteristics. Product status is active, ensuring supply chain continuity. RoHS3 compliance and regulatory certifications are maintained.

DSEC29-06AC (IXYS HiPerFRED™ Series) - Higher Current Alternative

The DSEC29-06AC provides 15 A current capacity with identical 600 V voltage rating and common cathode configuration. This part uses the ISOPLUS220™ package, which is a through-hole alternative to TO-220-3. Reverse recovery time is improved to 35 ns. Product status is active. This substitute is suitable for applications requiring higher current margins or where IXYS HiPerFRED™ series components are specified.

DSEC59-06BC (IXYS HiPerFRED™ Series) - Maximum Current Alternative

The DSEC59-06BC provides 30 A current capacity with identical 600 V voltage rating and common cathode configuration. This part uses the ISOPLUS220™ package. Reverse recovery time is optimized to 30 ns. Product status is active. This substitute is suitable for high-current applications or where design margins require significantly higher current capacity than the original 7.5 A specification.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, ensuring regulatory compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can STTH16L06CFP directly replace STTH15AC06CFP in existing designs?

A: Yes. The STTH16L06CFP maintains identical electrical topology (1 pair common cathode), voltage rating (600 V), and through-hole package family (TO-220-3 Full Pack). The 8 A current rating exceeds the original 7.5 A specification, providing compatibility for applications operating at or below the original current level. Both parts are STMicroelectronics products with active product status.

Q: What is the difference between TO-220-3 Full Pack and ISOPLUS220™ packages?

A: Both are through-hole packages designed for similar thermal and electrical performance in power applications. TO-220-3 Full Pack and ISOPLUS220™ are distinct mechanical packages with different pin configurations and mounting footprints. Component selection must account for PCB layout compatibility. DSEC29-06AC and DSEC59-06BC use ISOPLUS220™ and require PCB redesign if substituting for the original TO-220-3 Full Pack configuration.

Q: Are IXYS DSEC series parts compatible with STMicroelectronics STTH series applications?

A: DSEC29-06AC and DSEC59-06BC are electrically compatible based on shared parameters: 1 pair common cathode configuration, 600 V voltage rating, fast recovery speed classification, and through-hole mounting. However, package differences (ISOPLUS220™ versus TO-220-3 Full Pack) require PCB layout evaluation. Both IXYS parts maintain ROHS3 compliance and regulatory equivalence.

Q: What is the significance of reverse recovery time (trr) differences?

A: Reverse recovery time is provided as a specified parameter for each part. STTH15AC06CFP specifies 50 ns, STTH16L06CFP specifies 55 ns, DSEC29-06AC specifies 35 ns, and DSEC59-06BC specifies 30 ns. These values are engineering specifications that characterize switching behavior. Application-specific requirements determine whether these differences are relevant to circuit performance.

Q: Why is the STTH15AC06CFP classified as obsolete?

A: Product status is determined by manufacturer lifecycle decisions. The STTH15AC06CFP is listed as obsolete, indicating it is no longer in active production. Active product status alternatives (STTH16L06CFP, DSEC29-06AC, DSEC59-06BC) ensure continued availability for new designs and production continuity.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. STTH15AC06CFP, STTH16L06CFP, DSEC29-06AC, and DSEC59-06BC are all ROHS3 compliant. Moisture sensitivity level is MSL 1 (unlimited) for all parts. REACH status is unaffected for all parts. Regulatory compliance is maintained across all listed components.

Q: What current rating should be selected for a new design?

A: Component selection is based on application requirements. If the original design operated at 7.5 A or below, STTH16L06CFP (8 A) provides direct substitution with minimal design changes. Applications requiring higher current capacity or design margin may select DSEC29-06AC (15 A) or DSEC59-06BC (30 A). Current rating selection is an engineering decision based on circuit requirements and thermal management considerations.

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