Diodes Incorporated RS405L-F

Overview

RS405L-F from Rectron Semiconductor is a 4.0A, 600V PIV single-phase bridge rectifier in RS-4L plastic package with 200A peak surge rating, 1.0V max forward voltage at 3.0A, and 10µA max reverse leakage at 25°C - used in AC/DC power supplies for industrial control panels requiring high reliability and UL recognition.

For engineers reviewing the RS405L-F datasheet, RS405L-F pinout, RS405L-F application, or RS405L-F equivalent, key selection criteria include PIV derating for capacitive loads (−20%), TJ = −55°C to +150°C operation, and I²t = 166 A²s fusing rating for short-circuit coordination.

Technical Context

This bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration, enabling AC-to-DC conversion without external wiring. It supports resistive/inductive loads at 60Hz and requires 20% average current derating under capacitive load conditions per datasheet guidance.

Thermal performance is defined by case temperature (TC) derating: rated 4.0A at TA = 50°C, dropping to ~2.0A at TC = 100°C. The device meets UL 94V-0 flammability and is recognized under UL File E94661 as a component-level safety-certified part.

Key Specifications

Pinout & Package

RS405L-F uses the RS-4L molded plastic package (UL 94V-0), measuring 18.5–19.5 mm (A) × 15.4–16.0 mm (B) × 19.0 mm (C), with plating compliant to MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bridge rectifier applications.

Compared with GBU6K, RS405L-F offers identical electrical ratings in a smaller RS-4L package but lower thermal mass; versus KBP306, it delivers +33% average current and +33% surge capacity while maintaining pin compatibility - critical for upgrading legacy designs.

Availability

RS405L-F is available at Aetrix Electronics and suitable for industrial power supplies, motor drive control boards, commercial HVAC controllers, and test equipment power modules requiring stable component supply and UL-recognized safety compliance.

Supply support for RS405L-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Rectron Semiconductor is a Taiwan-based manufacturer specializing in discrete power semiconductors, including rectifiers, diodes, and thyristors, with global distribution and AEC-Q200 qualified products.

The RS401L–RS407L series targets cost-sensitive, high-reliability AC/DC front-end applications across industrial automation and building controls, emphasizing UL recognition, surge robustness, and wide temperature operation.

FAQ

What is the maximum allowable case temperature for continuous operation?

The RS405L-F is rated for continuous operation up to TC = 100°C, with average forward current derated linearly from 4.0A at TA = 50°C to approximately 2.0A at TC = 100°C per Figure 1 in DS21315 Rev. D. Exceeding this temperature risks accelerated parametric shift and reduced lifetime.

Can RS405L-F be used with capacitive loads without modification?

No - the datasheet explicitly requires 20% derating of I(AV) when used with capacitive loads due to high peak charging currents. For a 4.0A-rated device, this limits continuous average current to 3.2A to prevent overheating and premature failure.

Is RS405L-F RoHS-compliant and lead-free?

Yes, RS405L-F is RoHS-compliant and lead-free per EU Directive 2011/65/EU. The terminal plating meets MIL-STD-202 Method 208 solderability requirements, and the plastic body carries UL 94V-0 flammability certification.

How does the I²t rating of 166 A²s translate to fuse selection?

The 166 A²s I²t value defines the maximum let-through energy the device can survive during a short-circuit event. Fuse selection must ensure its I²t rating is less than 166 A²s at the applicable voltage - e.g., a 3.15A fast-blow fuse rated 250VAC typically has I²t ≈ 40–60 A²s, providing proper coordination.