STTA9012TV2 Equivalent & Substitute Parts

Part Overview

The STTA9012TV2 is a diode module manufactured by STMicroelectronics, classified as a general-purpose rectifier in the TURBOSWITCH™ series. This component is a 2-independent diode array rated for 1200 V DC reverse voltage with 45 A average rectified current per diode, housed in an ISOTOP chassis mount package. The STTA9012TV2 is currently listed as obsolete, necessitating identification of functionally equivalent active alternatives to maintain design continuity and ensure supply chain availability for new production and field replacements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1200	V
Current - Average Rectified (Io) (per Diode)	45	A
Voltage - Forward (Vf) (Max) @ If	2.05	V @ 45 A
Reverse Recovery Time (trr)	115	ns
Current - Reverse Leakage @ Vr	200	µA @ 960 V
Operating Temperature - Junction (Max)	150	°C
Diode Configuration	2 Independent	—
Package / Case	ISOTOP	—
Mounting Type	Chassis Mount	—
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—

Substitute Part Grouping Explanation

Substitution of the obsolete STTA9012TV2 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match or Exceed):

Voltage - DC Reverse (Vr) (Max): 1200 V minimum
Current - Average Rectified (Io) (per Diode): 45 A minimum
Diode Configuration: 2 Independent (required for pin compatibility)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

Package / Case: ISOTOP
Mounting Type: Chassis Mount

Compliance Parameters:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

The STTH9012TV2 meets all substitution criteria. While minor variations exist in forward voltage (2.1 V vs. 2.05 V), reverse recovery time (125 ns vs. 115 ns), and reverse leakage current specifications, these differences remain within acceptable engineering tolerances for general-purpose rectifier applications and do not compromise functional equivalence.

Parameter Comparison

Parameter	STTA9012TV2 (Obsolete)	STTH9012TV2 (Active)	Unit
Manufacturer	STMicroelectronics	STMicroelectronics	—
Category	Diodes, Rectifiers	Diodes, Rectifiers	—
Diode Configuration	2 Independent	2 Independent	—
Technology	Standard	Standard	—
Voltage - DC Reverse (Vr) (Max)	1200	1200	V
Current - Average Rectified (Io) (per Diode)	45	45	A
Voltage - Forward (Vf) (Max) @ If	2.05 @ 45 A	2.1 @ 45 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	115	125	ns
Current - Reverse Leakage @ Vr	200 @ 960 V	30 @ 1200 V	µA
Operating Temperature - Junction (Max)	150	150	°C
Mounting Type	Chassis Mount	Chassis Mount	—
Package / Case	ISOTOP	ISOTOP	—
Supplier Device Package	ISOTOP®	ISOTOP®	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—
REACH Status	REACH Unaffected	REACH Unaffected	—
ECCN	EAR99	EAR99	—
HTSUS	8541.10.0080	8541.10.0080	—
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The STTH9012TV2 is the direct functional equivalent for the obsolete STTA9012TV2. Both components are manufactured by STMicroelectronics and share identical electrical ratings, mechanical packaging, and compliance certifications. The STTH9012TV2 is currently in active production status with confirmed inventory availability (3920 pcs), ensuring reliable supply for new designs and replacement applications.

Selection of the STTH9012TV2 is supported by:

Identical voltage and current ratings (1200 V, 45 A per diode)
Matching diode configuration (2 Independent)
Identical ISOTOP chassis mount package and mechanical interface
Full ROHS3 compliance and REACH unaffected status
Equivalent ECCN and HTSUS classifications
Active product status with established supply chain

The minor parameter variations (forward voltage tolerance of 0.05 V, reverse recovery time difference of 10 ns, and improved reverse leakage characteristics) do not impact functional equivalence in general-purpose rectifier applications and represent normal manufacturing specification ranges within the same product family.

Frequently Asked Questions (FAQ)

Q: Can the STTH9012TV2 be used as a direct replacement for the STTA9012TV2 in existing designs?

A: Yes. The STTH9012TV2 is electrically and mechanically equivalent to the STTA9012TV2. Both components feature identical voltage ratings (1200 V), current ratings (45 A per diode), diode configuration (2 Independent), and ISOTOP chassis mount packaging. Pin compatibility and mounting interfaces are identical.

Q: What are the key differences between the STTA9012TV2 and STTH9012TV2?

A: The primary differences are product status and minor specification variations. The STTA9012TV2 is obsolete, while the STTH9012TV2 is active. The STTH9012TV2 exhibits a forward voltage of 2.1 V (versus 2.05 V), a reverse recovery time of 125 ns (versus 115 ns), and improved reverse leakage current of 30 µA at 1200 V (versus 200 µA at 960 V). These variations are within normal engineering tolerances.

Q: Are there packaging differences between these parts?

A: Both components use the ISOTOP package with chassis mount configuration. The STTA9012TV2 was supplied without specified packaging format, while the STTH9012TV2 is supplied in tube packaging. The physical component and mounting interface remain identical.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the STTA9012TV2 and STTH9012TV2 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Both have Moisture Sensitivity Level 1 (Unlimited).

Q: What is the inventory status for the STTH9012TV2?

A: The STTH9012TV2 has confirmed inventory of 3920 pcs in new original condition, ensuring availability for production and field replacement applications.

Q: Are there any thermal or operating temperature differences?

A: No. Both components have identical maximum junction operating temperature ratings of 150°C.

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