RB156-BP Bridge Rectifier Single Phase 800V 1.5A Equivalent & Substitute Parts

Part Overview

The RB156-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 800V peak reverse voltage and 1.5A average rectified current. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations. The RB156-BP operates across a temperature range of -55°C to 125°C and is housed in a 4-Circular RB-15 through-hole package. Due to its obsolete status, active equivalent parts with identical or superior electrical characteristics are necessary for procurement and design continuity.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	800 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1.5 A
Current - Reverse Leakage @ Vr	10 µA @ 800 V
Operating Temperature Range	-55°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	4-Circular, RB-15
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RB156-BP is determined by strict equivalence across the following critical parameters:

Diode Type: Single Phase bridge rectifier configuration
Voltage Rating: 800V peak reverse voltage (Vrrm)
Current Rating: 1.5A average rectified current (Io)
Mounting: Through-hole technology with compatible package footprint
Compliance: ROHS3 compliance and REACH unaffected status
Temperature Range: Operating capability within or exceeding -55°C to 125°C

The W08G-E4/51 meets all substitution criteria as an active equivalent part. Both components share identical voltage and current ratings, standard rectifier technology, through-hole mounting, and equivalent regulatory compliance. The substitute part demonstrates superior performance in reverse leakage current (5 µA vs. 10 µA) and extended operating temperature range (-55°C to 150°C vs. -55°C to 125°C).

Parameter Comparison

Parameter	RB156-BP (Main Part)	W08G-E4/51 (Substitute)
Manufacturer	Micro Commercial Co	Vishay General Semiconductor - Diodes Division
Product Status	Obsolete	Active
Diode Type	Single Phase	Single Phase
Technology	Standard	Standard
Voltage - Peak Reverse (Max)	800 V	800 V
Current - Average Rectified (Io)	1.5 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1.5 A	1 V @ 1 A
Current - Reverse Leakage @ Vr	10 µA @ 800 V	5 µA @ 800 V
Operating Temperature Range	-55°C ~ 125°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	4-Circular, RB-15	4-Circular, WOG
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The W08G-E4/51 is a direct functional equivalent to the RB156-BP for applications requiring 800V, 1.5A single-phase bridge rectification. Selection of the W08G-E4/51 is supported by:

Active product status ensuring long-term availability and supply chain continuity
Identical electrical ratings (800V, 1.5A) with no derating required
ROHS3 compliance and REACH unaffected status matching the original part
Superior reverse leakage characteristics (5 µA vs. 10 µA at 800V)
Extended operating temperature range (-55°C to 150°C vs. -55°C to 125°C)
Through-hole mounting compatibility with existing PCB layouts

The package designation difference (RB-15 vs. WOG) reflects manufacturer-specific nomenclature for the same 4-Circular through-hole configuration. Physical footprint compatibility must be confirmed against PCB design documentation prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the W08G-E4/51 directly replace the RB156-BP in existing designs?

A: Yes. Both parts share identical voltage (800V), current (1.5A), and diode type (single-phase standard rectifier) specifications. The through-hole mounting and 4-Circular package configuration are compatible. Package nomenclature differs (RB-15 vs. WOG) but refers to the same physical form factor.

Q: What is the significance of the reverse leakage current difference?

A: The W08G-E4/51 exhibits lower reverse leakage current (5 µA vs. 10 µA at 800V). This represents improved device quality and reduced power dissipation in reverse bias conditions, providing a performance advantage over the original RB156-BP.

Q: Does the extended temperature range of the W08G-E4/51 affect compatibility?

A: No. The W08G-E4/51 operating range (-55°C to 150°C) encompasses the RB156-BP range (-55°C to 125°C). The substitute part maintains full functionality across the original operating envelope and extends capability to higher temperatures.

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

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Regulatory and environmental compliance requirements are equivalent.

Q: What forward voltage specification should be used for circuit design?

A: The RB156-BP specifies 1 V @ 1.5 A, while the W08G-E4/51 specifies 1 V @ 1 A. For applications operating at 1.5A, use the RB156-BP specification (1 V @ 1.5 A) as the design reference. The W08G-E4/51 forward voltage at 1.5A may exceed the stated 1 V specification.

Q: Is physical PCB layout modification required when substituting the W08G-E4/51?

A: No layout modification is required if the original PCB was designed for the RB-15 package. Both the RB-15 and WOG packages use identical 4-Circular through-hole pin configuration and spacing. Verify pin assignment and lead diameter compatibility with existing PCB holes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message