W01G-E4/1 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The W01G-E4/1 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and procurement planning. The through-hole WOG package design and standard rectification technology establish the baseline for compatible alternatives.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	100 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-Circular, WOG
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitution eligibility for the W01G-E4/1 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Peak Reverse (Max): Must equal or exceed 100 V
Diode Type: Must be Single Phase
Mounting Type: Must be Through Hole
Operating Temperature Range: Must encompass -55°C ~ 150°C

Secondary Compatibility Factors:

Current - Average Rectified (Io): Substitute must meet or exceed 1.5 A
Package / Case: Physical compatibility with WOG footprint or equivalent through-hole configuration
Technology: Standard rectification technology

The W01G-E4/1 has two identified substitutes: W01G-E4/51 (direct manufacturer equivalent with different packaging) and GBU2501-G (manufacturer-recommended alternative with enhanced current rating).

Parameter Comparison

Parameter	W01G-E4/1 (Main)	W01G-E4/51 (Direct Equivalent)	GBU2501-G (MFR Recommended)
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Comchip Technology
Voltage - Peak Reverse (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	1.5 A	1.5 A	4.2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1 V @ 1 A	1 V @ 12.5 A
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	10 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-Circular, WOG	4-Circular, WOG	4-SIP, GBU
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

W01G-E4/51 (Direct Equivalent): This part is the preferred substitute for the obsolete W01G-E4/1. Both components are manufactured by Vishay and share identical electrical specifications, operating temperature range, and package configuration. The W01G-E4/51 is currently in active production status with 4690 units in stock, ensuring procurement availability. This substitute requires no circuit redesign and provides direct form-factor compatibility.

GBU2501-G (Manufacturer-Recommended Alternative): This Comchip Technology part meets all primary substitution criteria with identical peak reverse voltage and operating temperature range. The GBU2501-G provides enhanced current capacity (4.2 A versus 1.5 A), making it suitable for applications requiring higher current handling. The package configuration differs (4-SIP GBU versus 4-Circular WOG), requiring verification of physical board layout compatibility. This part is actively produced with 934 units in stock. Selection of this substitute is appropriate when circuit design permits the package transition and higher current capability is beneficial or required.

Frequently Asked Questions (FAQ)

Q: Can W01G-E4/51 be used as a direct replacement for W01G-E4/1? A: Yes. Both parts are manufactured by Vishay with identical electrical parameters, operating temperature range, and through-hole WOG package configuration. The primary difference is packaging format (bulk versus original), with W01G-E4/51 currently in active production.

Q: What are the key differences between W01G-E4/1 and GBU2501-G? A: Both parts maintain 100 V peak reverse voltage and -55°C to 150°C operating temperature. GBU2501-G provides higher average rectified current (4.2 A versus 1.5 A) and is manufactured by Comchip Technology. The package configuration differs: GBU2501-G uses a 4-SIP GBU package instead of the 4-Circular WOG package, requiring physical compatibility verification.

Q: Is package compatibility critical when selecting a substitute? A: Yes. While electrical parameters may be equivalent, physical package dimensions and pin configurations must match the PCB layout. W01G-E4/51 maintains identical package geometry to the original part. GBU2501-G uses a different package type and requires board-level assessment before implementation.

Q: Are all substitute parts RoHS3 compliant? A: Yes. Both W01G-E4/51 and GBU2501-G are ROHS3 compliant, matching the compliance status of the original W01G-E4/1.

Q: Which substitute should be selected for new designs? A: For applications requiring 1.5 A rectified current with 100 V rating, W01G-E4/51 is the recommended choice due to identical specifications and active production status. GBU2501-G is appropriate when higher current capacity (4.2 A) is needed and package transition is feasible.

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