BYT12PI-1000RG Equivalent & Substitute Parts

Part Overview

The BYT12PI-1000RG is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 1000 V DC reverse voltage and 12 A average rectified current in a TO-220AC isolated package configuration. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical performance within the specified voltage and current ratings while accommodating packaging and thermal characteristics of the application.

Substiute Parts

BYT12PI-1000RG

STMicroelectronicsIn Stock: 1108BYT12PI-1000RG Datasheet

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STTH1210DI

STMicroelectronicsIn Stock: 20209STTH1210DI Datasheet

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APT15D100KG

Microchip TechnologyIn Stock: 2361APT15D100KG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BYT12PI-1000RG is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 1000 V
• Current - Average Rectified (Io): Must equal or exceed 12 A
• Mounting Type: Through Hole configuration required
• Package compatibility: TO-220 series packages acceptable
• Technology: Standard rectifier diode technology
• RoHS Compliance: ROHS3 Compliant status required

Secondary Compatibility Factors:

• Reverse Recovery Time (trr): Lower values indicate improved switching performance
• Forward Voltage (Vf): Lower values reduce power dissipation
• Reverse Leakage Current: Lower values indicate superior blocking characteristics
• Operating Temperature Range: Must accommodate application thermal requirements

The substitute parts identified (STTH1210DI and APT15D100KG) satisfy the primary electrical requirements while offering active product status and improved performance characteristics in specific parameters.

Parameter Comparison

Engineering Selection Recommendations

STTH1210DI (STMicroelectronics): This substitute provides direct electrical equivalence to the BYT12PI-1000RG with identical voltage and current ratings. The STTH1210DI offers superior performance through reduced reverse recovery time (90 ns versus 155 ns) and significantly lower reverse leakage current (10 µA versus 50 µA). Active product status ensures long-term availability and supply chain continuity. Maximum junction temperature of 175°C provides enhanced thermal margin compared to the obsolete part. ROHS3 compliance and unlimited moisture sensitivity level maintain regulatory and environmental standards. Package configuration is TO-220-2 insulated, compatible with standard TO-220 mounting footprints.

APT15D100KG (Microchip Technology): This substitute exceeds the electrical requirements of the BYT12PI-1000RG with a higher current rating of 15 A versus 12 A, providing design margin for applications requiring increased current capacity. Voltage rating remains at 1000 V, maintaining compatibility with the original specification. Active product status and ROHS3 compliance ensure regulatory alignment. Maximum junction temperature of 175°C matches the STTH1210DI. The TO-220-3 package configuration accommodates standard through-hole mounting. Reverse recovery time of 260 ns is within fast recovery classification but exceeds the original part specification. Reverse leakage current of 250 µA is higher than both the original part and STTH1210DI, requiring thermal management evaluation in applications sensitive to leakage current dissipation.

Frequently Asked Questions (FAQ)

Q: Can STTH1210DI directly replace BYT12PI-1000RG in existing designs?

A: Yes. The STTH1210DI maintains identical voltage (1000 V) and current (12 A) ratings. Both components use TO-220 package configurations compatible with standard through-hole mounting. The STTH1210DI offers improved reverse recovery time and lower leakage current, resulting in enhanced performance. Verification of thermal management and PCB layout compatibility is required for specific applications.

Q: What are the differences between isolated and insulated package configurations?

A: The BYT12PI-1000RG uses TO-220-2 isolated tab configuration, while the STTH1210DI uses TO-220-2 insulated configuration. Both provide electrical isolation between the semiconductor junction and the mounting tab. Mechanical mounting compatibility with heatsinks and thermal interface materials must be confirmed for the specific application.

Q: Is APT15D100KG suitable for applications designed for 12 A operation?

A: Yes. The APT15D100KG is rated for 15 A average rectified current, exceeding the 12 A requirement of the original BYT12PI-1000RG. The higher current rating provides design margin and does not create incompatibility with 12 A applications. Voltage rating of 1000 V matches the original specification. Forward voltage and reverse leakage characteristics differ and must be evaluated for thermal and efficiency considerations in the specific circuit.

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

A: Reverse recovery time (trr) affects switching speed and switching losses in rectifier applications. The STTH1210DI (90 ns) provides faster recovery than the BYT12PI-1000RG (155 ns), reducing switching losses and improving efficiency in high-frequency applications. The APT15D100KG (260 ns) has slower recovery but remains within fast recovery classification. Selection depends on operating frequency and thermal management requirements.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. Both STTH1210DI and APT15D100KG are ROHS3 compliant, matching the compliance status of the BYT12PI-1000RG. Both components have moisture sensitivity level of 1 (unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: What is the impact of higher reverse leakage current in APT15D100KG?

A: The APT15D100KG exhibits reverse leakage current of 250 µA at 1000 V, compared to 50 µA for the BYT12PI-1000RG and 10 µA for the STTH1210DI. Higher leakage current increases power dissipation during reverse bias operation. Thermal management and power budget analysis are required to determine acceptability in the specific application. Applications with stringent leakage current requirements should prioritize the STTH1210DI.

Q: Can these diodes be used interchangeably in the same PCB layout?

A: Both substitute parts use through-hole TO-220 package configurations compatible with standard PCB mounting patterns. Mechanical compatibility with heatsinks and thermal interface materials must be verified. The STTH1210DI and BYT12PI-1000RG use identical TO-220-2 pinout. The APT15D100KG uses TO-220-3 configuration, requiring verification of pin assignment compatibility with the circuit design.