W005G Bridge Rectifier Single Phase 50V 1.5A Equivalent & Substitute Parts

Part Overview

The W005G is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 50V peak reverse voltage and 1.5A average rectified current. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The through-hole WOG package configuration and standard rectification technology define the functional requirements for suitable alternatives.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-Circular, WOG

Substitute Part Grouping Explanation

Substitution eligibility for the W005G is determined by the following critical parameters: single-phase diode topology, 50V peak reverse voltage rating, through-hole mounting configuration, and operating temperature range of -55°C to 150°C. Current rating serves as a secondary consideration; substitute parts may exceed the original 1.5A specification while maintaining voltage and thermal compatibility.

The identified substitute parts are grouped as follows:

Parametric Equivalent (Same Current Rating): W005G-E4/51 maintains identical electrical specifications and through-hole WOG packaging, differing only in product status (active versus obsolete) and RoHS compliance level.

Higher Current Capacity Substitutes: GBU25005-G (25A) and KBU35005-G (35A) provide increased current handling while preserving the 50V voltage rating and through-hole mounting requirement. These parts accommodate applications requiring higher current capacity within the same voltage envelope.

Parameter Comparison

Parameter	W005G	W005G-E4/51	GBU25005-G	KBU35005-G
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Comchip Technology	Comchip Technology
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase
Voltage - Peak Reverse (Max)	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	1.5 A	1.5 A	25 A	35 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1 V @ 1 A	1 V @ 12.5 A	1.1 V @ 17.5 A
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	10 µA @ 50 V	10 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-Circular, WOG	4-Circular, WOG	4-SIP, GBU	4-SIP, KBU
Product Status	Obsolete	Active	Active	Obsolete
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

W005G-E4/51 is the primary direct replacement for the W005G. This part maintains identical electrical and thermal specifications while offering active product status and ROHS3 compliance. The packaging remains compatible with existing through-hole PCB layouts designed for the WOG configuration.

GBU25005-G serves as a functional substitute for applications where current capacity exceeds 1.5A but remains below 25A. This part is actively manufactured and ROHS3 compliant. Package transition from WOG to GBU requires PCB layout verification to confirm pin compatibility and thermal management adequacy.

KBU35005-G provides the highest current capacity at 35A for applications requiring substantial current handling within the 50V voltage specification. Although classified as obsolete, this part maintains ROHS3 compliance. The KBU package differs from both WOG and GBU configurations and requires PCB layout confirmation.

Selection should prioritize W005G-E4/51 for direct replacement scenarios. Higher-current alternatives (GBU25005-G, KBU35005-G) are appropriate only when application requirements exceed the original 1.5A specification and PCB layout accommodates package differences.

Frequently Asked Questions (FAQ)

Q: Can W005G-E4/51 be used as a direct drop-in replacement for W005G?

A: Yes. W005G-E4/51 maintains identical voltage rating (50V), current rating (1.5A), forward voltage characteristics, reverse leakage specifications, and operating temperature range (-55°C to 150°C). Both use the 4-Circular WOG through-hole package. The primary difference is product status (active versus obsolete) and RoHS compliance level.

Q: What are the key differences between WOG, GBU, and KBU package types?

A: All three are 4-pin through-hole bridge rectifier packages. WOG and GBU use different pin configurations and physical dimensions, as do GBU and KBU. PCB layout modifications are required when transitioning between package types. Pin-to-pin compatibility cannot be assumed.

Q: Can GBU25005-G or KBU35005-G be used in applications originally designed for W005G?

A: These parts are functionally compatible only if the application current requirement does not exceed their respective ratings (25A and 35A) and the PCB layout accommodates the different package footprint. The 50V voltage rating and -55°C to 150°C operating temperature range remain compatible. Package transition requires physical layout verification.

Q: Are there compliance or regulatory differences between these substitute parts?

A: W005G is RoHS non-compliant. W005G-E4/51, GBU25005-G, and KBU35005-G are all ROHS3 compliant. All parts are REACH unaffected and classified under ECCN EAR99. Applications subject to RoHS requirements must use compliant alternatives.

Q: What is the significance of the current rating difference between W005G (1.5A) and the higher-rated substitutes?

A: Current rating indicates maximum average rectified current the component can safely conduct. Substitutes with higher ratings (25A, 35A) can handle greater current loads but are not required for applications limited to 1.5A. Selection should match application current requirements without unnecessary over-specification.

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