BYWB29-100HE3_A/I Equivalent & Substitute Parts

Part Overview

The BYWB29-100HE3_A/I is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 100 V DC reverse voltage with an 8 A average rectified current rating and features fast recovery characteristics with a 25 ns reverse recovery time. The device is packaged in TO-263AB (D2PAK) configuration with 2 leads plus tab.

This part has reached Last Time Buy status, indicating production discontinuation. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for ongoing production and field replacement requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 20 A	V
Reverse Recovery Time (trr)	25	ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	µA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Surface Mount	-
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	-
Operating Temperature - Junction	-65 to 150	°C
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the BYWB29-100HE3_A/I is determined by the following critical parameters:

Voltage Rating Compatibility: The DC reverse voltage (Vr) must equal or exceed 100 V. Substitute parts with higher voltage ratings (200 V) are electrically compatible and provide additional design margin.

Current Rating Compatibility: The average rectified current (Io) must equal or exceed 8 A. Substitute parts with equal or higher current ratings maintain functional equivalence.

Package Compatibility: Surface mount packages in TO-263AB (D2PAK) or equivalent footprints ensure mechanical and thermal compatibility on printed circuit boards.

Speed Classification: Fast recovery diodes with reverse recovery time ≤ 500 ns maintain switching performance characteristics.

Environmental and Compliance Requirements: RoHS3 compliance and operating temperature range of -65°C to 150°C establish baseline environmental specifications.

Substitutes are grouped into two categories:

Category 1 - Direct Manufacturer Equivalent: BYWB29-200HM3/I provides identical current rating and package with elevated voltage rating, manufactured by the same supplier.

Category 2 - Cross-Manufacturer Substitute: STPS15H100CBY-TR offers equivalent voltage and package specifications from an alternative manufacturer, with technology differences noted.

Parameter Comparison

Parameter	BYWB29-100HE3_A/I	BYWB29-200HM3/I	STPS15H100CBY-TR
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	100 V	200 V	100 V
Current - Average Rectified (Io)	8 A	8 A	7.5 A (per Diode)
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 20 A	1.3 V @ 20 A	800 mV @ 7.5 A
Reverse Recovery Time (trr)	25 ns	25 ns	≤ 500 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 200 V	3 µA @ 100 V
Technology	Standard	Standard	Schottky
Diode Configuration	Single	Single	1 Pair Common Cathode
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-252-3, DPAK
Operating Temperature - Junction	-65 to 150°C	-65 to 150°C	-40 to 175°C
Product Status	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Standard	Automotive	Automotive
Qualification	-	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

BYWB29-200HM3/I is the primary substitute for the BYWB29-100HE3_A/I. This part maintains identical current rating (8 A), forward voltage characteristics (1.3 V @ 20 A), reverse recovery time (25 ns), and package configuration (TO-263AB D2PAK). The elevated voltage rating (200 V versus 100 V) provides additional design margin without performance degradation. The part is manufactured by the same supplier (Vishay General Semiconductor - Diodes Division) and carries Active product status with AEC-Q101 automotive qualification, ensuring long-term availability and supply chain stability.

STPS15H100CBY-TR is an alternative substitute from STMicroelectronics. This part matches the 100 V voltage rating and maintains surface mount packaging in the TO-252-3 DPAK footprint. The current rating is 7.5 A per diode, which is marginally lower than the 8 A specification of the original part. The technology differs (Schottky versus Standard), resulting in lower forward voltage (800 mV @ 7.5 A) and lower reverse leakage current (3 µA @ 100 V). The part features a 1 Pair Common Cathode diode configuration and carries AEC-Q101 automotive qualification with Active product status. The operating temperature range extends to 175°C, exceeding the original specification.

Selection between substitutes depends on application requirements. For designs requiring exact current and voltage specifications with identical technology, BYWB29-200HM3/I is the recommended choice. For applications where lower forward voltage and reverse leakage are beneficial, and where the 7.5 A current rating is acceptable, STPS15H100CBY-TR provides an alternative with different performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can BYWB29-200HM3/I be used as a direct replacement for BYWB29-100HE3_A/I?

A: Yes. The BYWB29-200HM3/I maintains identical current rating (8 A), forward voltage (1.3 V @ 20 A), reverse recovery time (25 ns), and package configuration (TO-263AB D2PAK). The 200 V voltage rating is compatible with 100 V applications and provides additional design margin. No circuit modifications are required.

Q: What are the differences between BYWB29-200HM3/I and STPS15H100CBY-TR?

A: BYWB29-200HM3/I is a standard rectifier diode with 8 A current rating and 200 V voltage rating. STPS15H100CBY-TR is a Schottky diode array (1 Pair Common Cathode) with 7.5 A per diode current rating and 100 V voltage rating. The Schottky technology provides lower forward voltage (800 mV versus 1.3 V) and lower reverse leakage current (3 µA versus 10 µA). Package footprints differ: D2PAK versus DPAK.

Q: Is the STPS15H100CBY-TR current rating of 7.5 A acceptable for an 8 A application?

A: The 7.5 A rating is marginally lower than the 8 A specification. Substitution is acceptable only if the actual application current does not exceed 7.5 A. Circuit analysis is required to confirm current levels under all operating conditions.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both BYWB29-200HM3/I and STPS15H100CBY-TR are ROHS3 compliant, matching the compliance status of the original BYWB29-100HE3_A/I.

Q: What is the significance of AEC-Q101 qualification on the substitute parts?

A: AEC-Q101 is an automotive qualification standard. Both substitute parts carry this qualification, indicating suitability for automotive applications with enhanced reliability and quality assurance requirements. The original part does not list this qualification.

Q: Can the STPS15H100CBY-TR be used in a single-diode circuit designed for the BYWB29-100HE3_A/I?

A: The STPS15H100CBY-TR is a diode array with 1 Pair Common Cathode configuration. Circuit compatibility depends on the specific application topology. Single-diode applications may require circuit redesign to accommodate the dual-diode structure. Footprint differences (DPAK versus D2PAK) also require PCB layout modifications.

Q: What is the product status significance for the original part?

A: Last Time Buy status indicates that BYWB29-100HE3_A/I production has been discontinued. Existing inventory is limited, and no future production is planned. Substitution with active-status parts (BYWB29-200HM3/I or STPS15H100CBY-TR) ensures long-term component availability and supply chain continuity.

Q: Are there temperature range differences between the substitutes?

A: The original BYWB29-100HE3_A/I and BYWB29-200HM3/I both operate from -65°C to 150°C. The STPS15H100CBY-TR extends the upper limit to 175°C, providing additional thermal margin in high-temperature applications.

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