B485D-2 Equivalent & Substitute Parts

Part Overview

The B485D-2 is a single-phase bridge rectifier manufactured by Sensata-Crydom, rated for 800 V peak reverse voltage and 50 A average rectified current. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The bridge rectifier features QC terminal mounting and operates across a temperature range of -40°C to 125°C (TJ).

Substiute Parts

B485D-2

Sensata-CrydomIn Stock: 773B485D-2 Datasheet

Current PartRFQ

B485F-2

Sensata TechnologiesIn Stock: 791B485F-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B485D-2 is determined by the following critical parameters:

• Diode Type: Single Phase configuration must be maintained
• Current Rating: 50 A average rectified current is the baseline requirement
• Mounting Type: QC Terminal compatibility is mandatory for mechanical and electrical integration
• Package / Case: B48 Module form factor ensures physical fit
• Forward Voltage: 1.35 V @ 50 A establishes thermal and efficiency characteristics
• Operating Temperature Range: -40°C to 125°C (TJ) defines thermal performance boundaries

The B485F-2 qualifies as a direct substitute based on these parameters. While the B485F-2 features a higher peak reverse voltage rating (1.2 kV versus 800 V), this represents an uprated specification that maintains full compatibility with the original B485D-2 application requirements.

Parameter Comparison

Engineering Selection Recommendations

The B485F-2 is the direct substitute for the obsolete B485D-2. Both components share identical current ratings, forward voltage characteristics, operating temperature ranges, and mechanical mounting specifications. The B485F-2 maintains active product status with Sensata Technologies, ensuring ongoing availability and supply chain continuity.

The B485F-2 carries ROHS3 compliance and REACH Affected status, reflecting current regulatory requirements. The elevated peak reverse voltage rating (1.2 kV) of the B485F-2 provides enhanced voltage margin relative to the original 800 V specification, supporting improved system reliability in applications where the B485D-2 was previously deployed.

Frequently Asked Questions (FAQ)

Q: Can the B485F-2 directly replace the B485D-2 in existing applications?

A: Yes. Both components maintain identical current ratings (50 A), forward voltage characteristics (1.35 V @ 50 A), operating temperature ranges (-40°C to 125°C), and QC Terminal mounting on B48 Module packages. The higher voltage rating of the B485F-2 does not create compatibility issues.

Q: What is the significance of the higher voltage rating on the B485F-2?

A: The B485F-2 is rated for 1.2 kV peak reverse voltage compared to the B485D-2 at 800 V. This represents an uprated specification that maintains full backward compatibility while providing additional voltage margin for system protection.

Q: Are there compliance differences between the B485D-2 and B485F-2?

A: The B485F-2 is ROHS3 compliant and REACH Affected, reflecting current regulatory standards. The B485D-2 is listed as REACH Unaffected. Both components carry EAR99 ECCN classification and identical HTSUS codes.

Q: Does the B48 Module package ensure mechanical compatibility?

A: Yes. Both the B485D-2 and B485F-2 utilize the B48 Module package with QC Terminal mounting, ensuring identical mechanical fit and electrical connection in existing circuit designs.