STTA2006PI Equivalent & Substitute Parts

Part Overview

The STTA2006PI is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 20 A average rectified current. This device features fast recovery characteristics with a reverse recovery time of 60 ns and is housed in a DOP3I-2 insulated through-hole package. The STTA2006PI is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	20 A
Voltage - Forward (Vf) (Max) @ If	1.75 V @ 20 A
Reverse Recovery Time (trr)	60 ns
Current - Reverse Leakage @ Vr	100 µA @ 600 V
Mounting Type	Through Hole
Package / Case	DOP3I-2 Insulated (Straight Leads)
Operating Temperature - Junction (Max)	150°C
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)

Substitute Part Grouping Explanation

Substitution of the STTA2006PI is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 600 V DC reverse voltage rating to ensure safe operation in the same circuit topology.

Current Rating Capability: The substitute part must support at least 20 A average rectified current. Parts with higher current ratings (such as 30 A) are acceptable as they provide additional design margin and operational headroom.

Package and Mounting: The substitute part must use the same DOP3I-2 insulated through-hole package to ensure mechanical and electrical compatibility with existing PCB layouts and thermal management designs.

Recovery Characteristics: The substitute part must maintain fast recovery classification (≤ 500ns, > 200mA) to preserve switching performance in the intended application.

The STTH3006PI meets all substitution criteria, offering identical voltage and package specifications with enhanced current capacity and improved thermal performance.

Parameter Comparison

Parameter	STTA2006PI	STTH3006PI
Voltage - DC Reverse (Vr) (Max)	600 V	600 V
Current - Average Rectified (Io)	20 A	30 A
Voltage - Forward (Vf) (Max) @ If	1.75 V @ 20 A	1.85 V @ 30 A
Reverse Recovery Time (trr)	60 ns	70 ns
Current - Reverse Leakage @ Vr	100 µA @ 600 V	25 µA @ 600 V
Mounting Type	Through Hole	Through Hole
Package / Case	DOP3I-2 Insulated (Straight Leads)	DOP3I-2 Insulated (Straight Leads)
Operating Temperature - Junction (Max)	150°C	175°C
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The STTH3006PI is the direct substitute for the STTA2006PI. Both devices share identical voltage ratings (600 V) and package specifications (DOP3I-2 through-hole), ensuring direct mechanical and electrical compatibility.

The STTH3006PI provides superior design characteristics: 50% higher current capacity (30 A versus 20 A), improved reverse leakage performance (25 µA versus 100 µA at 600 V), and extended junction temperature rating (175°C versus 150°C). These enhancements deliver increased operational margin without requiring circuit redesign.

The STTH3006PI holds active product status with ROHS3 compliance, whereas the STTA2006PI is obsolete and RoHS non-compliant. For new designs and production continuity, the STTH3006PI is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the STTH3006PI directly replace the STTA2006PI in existing designs?

A: Yes. Both devices use identical 600 V voltage ratings, DOP3I-2 through-hole packages, and fast recovery characteristics. The STTH3006PI's higher current rating (30 A) and lower reverse leakage provide enhanced performance without circuit modification.

Q: What is the impact of the 10 ns difference in reverse recovery time?

A: The STTH3006PI exhibits 70 ns reverse recovery time compared to the STTA2006PI's 60 ns. Both remain within the fast recovery classification (≤ 500ns, > 200mA). This minor difference does not affect functional compatibility in standard rectification applications.

Q: Are there thermal management differences between these devices?

A: The STTH3006PI supports a maximum junction temperature of 175°C versus 150°C for the STTA2006PI. This 25°C improvement, combined with lower reverse leakage, enables better thermal performance in continuous operation.

Q: Does the forward voltage difference affect circuit operation?

A: The STTH3006PI exhibits 1.85 V forward voltage at 30 A compared to 1.75 V at 20 A for the STTA2006PI. When operating at 20 A, the STTH3006PI will exhibit slightly higher forward voltage drop. This difference is within typical design tolerances for rectifier applications.

Q: What is the significance of RoHS compliance status?

A: The STTH3006PI is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components. The STTA2006PI's non-compliant status restricts its use in regulated markets and new product certifications.

Q: Are both devices available in the same packaging format?

A: Yes. Both the STTA2006PI and STTH3006PI use DOP3I-2 insulated packages with straight leads, ensuring identical PCB footprints and mounting procedures.

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