BYW99PI-200RG Equivalent & Substitute Parts

Part Overview

The BYW99PI-200RG is a diode array rectifier manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode design rated for 200 V DC reverse voltage and 15 A average rectified current per diode. The component is packaged in a TOP-3 Insulated through-hole configuration and is classified as obsolete product status. Due to its obsolete classification, equivalent substitute parts with active product status are available to maintain design continuity and ensure long-term supply chain reliability.

Substiute Parts

BYW99PI-200RG

STMicroelectronicsIn Stock: 1076BYW99PI-200RG Datasheet

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STTH2002CT

STMicroelectronicsIn Stock: 17006STTH2002CT Datasheet

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STTH3002CW

STMicroelectronicsIn Stock: 5028STTH3002CW Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BYW99PI-200RG is determined by strict equivalence of the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Diode Configuration: 1 Pair Common Cathode (mandatory match)
• Voltage - DC Reverse (Vr) (Max): 200 V (mandatory match)
• Current - Average Rectified (Io) (per Diode): 15 A (mandatory match)
• Technology: Standard (mandatory match)
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory match)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole (mandatory match)
• RoHS Status: ROHS3 Compliant (mandatory match)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (mandatory match)

The substitute parts STTH2002CT and STTH3002CW satisfy all mandatory electrical and mechanical equivalence criteria. Substitution is valid regardless of package form factor (TOP-3 Insulated, TO-220-3, or TO-247-3), provided the circuit board layout and thermal management design accommodate the alternative package geometry.

Parameter Comparison

Engineering Selection Recommendations

STTH2002CT (TO-220-3 Package)

The STTH2002CT is an active product with full manufacturing support and established supply chain availability. This substitute maintains electrical equivalence with the BYW99PI-200RG across all critical parameters. The TO-220-3 package provides improved thermal dissipation characteristics compared to the TOP-3 Insulated package, with a maximum junction temperature rating of 175°C versus 150°C for the original part. The reverse recovery time of 27 ns represents an improvement over the original 40 ns specification. This substitute is suitable for applications where the TO-220-3 form factor is compatible with existing circuit board layouts and mechanical constraints.

STTH3002CW (TO-247-3 Package)

The STTH3002CW is an active product offering the most advanced performance characteristics among the available substitutes. The TO-247-3 package provides superior thermal management with a larger copper contact area, supporting the same 175°C maximum junction temperature as the STTH2002CT. The reverse recovery time of 22 ns represents the fastest switching performance available. This substitute is recommended for applications requiring enhanced thermal performance or where the TO-247-3 package geometry aligns with circuit board design requirements.

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component. Selection between STTH2002CT and STTH3002CW depends on circuit board layout constraints, thermal management requirements, and mechanical packaging specifications.

Frequently Asked Questions (FAQ)

Q: Can STTH2002CT or STTH3002CW be used as direct replacements for BYW99PI-200RG in existing designs?

A: Both STTH2002CT and STTH3002CW are electrically equivalent to the BYW99PI-200RG across all mandatory parameters: diode configuration, voltage rating, current rating, technology classification, and speed characteristics. Direct electrical substitution is valid. However, circuit board layout modifications may be required due to package form factor differences (TOP-3 Insulated versus TO-220-3 or TO-247-3).

Q: What are the package form factor differences between the three parts?

A: The BYW99PI-200RG uses a TOP-3 Insulated through-hole package. The STTH2002CT uses a TO-220-3 through-hole package with a larger footprint and improved thermal characteristics. The STTH3002CW uses a TO-247-3 through-hole package, which provides the largest copper contact area and superior thermal dissipation. All three are through-hole mounted components.

Q: Are there differences in thermal performance between the substitutes?

A: The BYW99PI-200RG has a maximum junction temperature of 150°C. Both STTH2002CT and STTH3002CW support 175°C maximum junction temperature. The TO-247-3 package (STTH3002CW) provides superior thermal dissipation due to larger copper contact area compared to the TO-220-3 package (STTH2002CT). Thermal performance improvement depends on circuit board copper area allocation and heat sink design.

Q: Do the substitute parts have faster switching characteristics?

A: Yes. The BYW99PI-200RG has a reverse recovery time (trr) of 40 ns. The STTH2002CT has a trr of 27 ns, and the STTH3002CW has a trr of 22 ns. Both substitutes offer improved switching speed performance. This improvement reduces switching losses in rectifier applications.

Q: Are there differences in reverse leakage current?

A: The BYW99PI-200RG and STTH3002CW both specify 20 µA reverse leakage current at 200 V. The STTH2002CT specifies 10 µA at 200 V, representing lower leakage current. Lower reverse leakage current reduces standby power consumption in applications with sustained reverse voltage conditions.

Q: What is the product status significance of the substitutes?

A: The BYW99PI-200RG is classified as obsolete, indicating discontinued manufacturing and limited long-term availability. Both STTH2002CT and STTH3002CW are active products with ongoing manufacturing support, established supply chains, and long-term availability assurance. Active product status is critical for new designs and long-term production requirements.

Q: Are all three parts RoHS3 compliant?

A: Yes. The BYW99PI-200RG, STTH2002CT, and STTH3002CW are all ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained across all three parts.

Q: Which substitute should be selected for new designs?

A: For new designs, either STTH2002CT or STTH3002CW is appropriate based on circuit board layout and thermal management requirements. The STTH3002CW (TO-247-3) is recommended when superior thermal performance is required or when circuit board space permits the larger package. The STTH2002CT (TO-220-3) is suitable for space-constrained applications where thermal performance is adequate.