RL204-BP Equivalent & Substitute Parts

Part Overview

The RL204-BP is a 400 V, 2A through-hole rectifier diode manufactured by Micro Commercial Co in DO-15 (DO-204AC) axial package configuration. This component is classified as Not For New Designs, indicating it has reached end-of-life status. The part operates across a junction temperature range of -55°C to 150°C and features standard recovery characteristics with reverse leakage of 5 µA at rated voltage.

Identification of equivalent and substitute parts is necessary due to the product's discontinued status and limited inventory availability. Substitutes must maintain electrical compatibility within the specified voltage, current, and thermal operating parameters while accommodating packaging and compliance requirements.

Substiute Parts

RL204-BP

Micro Commercial CoIn Stock: 815RL204-BP Datasheet

Current PartRFQ

GP15G-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 10986GP15G-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RL204-BP is determined by the following critical parameters:

Voltage Compatibility: The substitute must maintain a DC reverse voltage rating (Vr) of 400 V or greater to ensure equivalent or superior voltage withstand capability.

Current Rating: The substitute must support an average rectified current (Io) rating of 2 A or greater to accommodate the original design current requirements.

Forward Voltage Characteristics: Forward voltage drop (Vf) must not exceed the original specification to prevent excessive power dissipation and thermal stress in the circuit.

Recovery Speed: The substitute must maintain standard recovery characteristics (>500ns, >200mA) to preserve circuit timing and switching behavior.

Reverse Leakage: Reverse leakage current at rated voltage must not exceed 5 µA to maintain circuit performance and prevent unintended current paths.

Package and Mounting: The substitute must utilize through-hole mounting in DO-204AC or DO-15 axial package configuration for mechanical and electrical compatibility with existing PCB layouts.

Operating Temperature Range: The substitute must support the required junction temperature range or a superset thereof to ensure reliable operation across all environmental conditions.

The GP15G-E3/54 meets these substitution criteria with equivalent voltage and recovery specifications, though with a reduced current rating of 1.5 A, which represents a design constraint requiring circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The RL204-BP is designated Not For New Designs, indicating discontinued status. The GP15G-E3/54 maintains Active product status with ongoing manufacturer support and availability, making it the appropriate selection for new designs and long-term supply chain continuity.

Compliance and Certification: Both parts carry identical REACH Unaffected and EAR99 ECCN classifications, ensuring equivalent regulatory compliance. The GP15G-E3/54 additionally carries RoHS3 Compliance certification and MSL Level 1 (Unlimited) moisture sensitivity rating, providing enhanced environmental and handling documentation.

Current Rating Constraint: The GP15G-E3/54 is rated for 1.5 A average rectified current compared to the RL204-BP's 2 A rating. Circuit designs operating at or near 2 A must be re-evaluated to confirm operation within the 1.5 A limit of the substitute part. Designs with average rectified current below 1.5 A proceed without modification.

Thermal Performance: The GP15G-E3/54 extends the operating temperature range to -65°C to 175°C, providing superior thermal margin compared to the RL204-BP's -55°C to 150°C range. This enhancement supports operation in more demanding thermal environments.

Inventory and Supply: The GP15G-E3/54 maintains significantly higher inventory availability (10,959 pieces) compared to the RL204-BP (749 pieces), supporting immediate procurement and reducing supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can the GP15G-E3/54 directly replace the RL204-BP in existing designs?

A: Direct replacement is possible only if the circuit design operates at average rectified currents of 1.5 A or below. The GP15G-E3/54's 1.5 A rating is the limiting factor. Designs operating at 2 A require circuit modification or alternative parts rated for 2 A or higher.

Q: What is the impact of the forward voltage difference between these parts?

A: The GP15G-E3/54 exhibits 1.1 V forward drop at 1.5 A compared to the RL204-BP's 1 V at 2 A. At equivalent current levels, the forward voltage difference is minimal. Power dissipation increases proportionally with forward voltage; designs with tight thermal budgets should calculate revised dissipation at the substitute's operating point.

Q: Are the DO-15 and DO-204AC package designations interchangeable?

A: Yes. DO-15 and DO-204AC refer to the same axial through-hole package configuration. Both the RL204-BP and GP15G-E3/54 utilize this identical package, ensuring mechanical and electrical compatibility with existing PCB layouts without modification.

Q: Does the extended temperature range of the GP15G-E3/54 affect circuit performance?

A: The extended range (-65°C to 175°C versus -55°C to 150°C) provides additional operational margin without degrading performance within the original RL204-BP temperature specification. Designs operating within the original -55°C to 150°C range experience no performance change.

Q: What is the significance of the RoHS3 compliance on the GP15G-E3/54?

A: RoHS3 Compliance indicates the part meets current European Union Restriction of Hazardous Substances directives. This certification is required for products sold into regulated markets and provides assurance of material composition and environmental compliance.

Q: How do the reverse recovery characteristics compare?

A: Both parts specify standard recovery characteristics (>500ns, >200mA). The GP15G-E3/54 provides an additional documented reverse recovery time (trr) of 3.5 µs, offering explicit timing data for circuit simulation and design verification. The RL204-BP does not specify this parameter.

Q: Is the 5 µA reverse leakage current specification identical between parts?

A: Yes. Both the RL204-BP and GP15G-E3/54 specify 5 µA reverse leakage at 400 V, ensuring equivalent leakage performance and circuit behavior in high-impedance applications.