Diodes Incorporated RS405LDI-F

Overview

RS405LDI-F from Diodes Incorporated is a 600 V PIV, 4.0 A average forward current, single-phase bridge rectifier in RS-4L plastic package with 200 A peak surge rating and 1.0 V max forward voltage at 3.0 A, used for AC-to-DC conversion in offline power supplies and industrial motor controls.

For engineers reviewing the RS405LDI-F datasheet, RS405LDI-F pinout, RS405LDI-F application, or RS405LDI-F equivalent, key selection criteria include PIV rating, thermal derating above 50°C, IFSM robustness for inrush-limited designs, and UL 94V-0 flammability compliance for safety-critical enclosures.

Technical Context

This bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration, enabling efficient AC input rectification without external wiring. It supports 60 Hz resistive/inductive loads per JEDEC test conditions and requires 20% current derating for capacitive loads.

Thermal performance is defined by case temperature (TC) derating to zero at 140°C, with junction operating range from –55°C to +150°C. The device exhibits 10 µA max reverse leakage at 25°C and 1.0 mA at 100°C under rated DC blocking voltage.

Key Specifications

Pinout & Package

Package: RS-4L molded plastic case, UL 94V-0 rated, 5.6 g weight, dimensions A=18.5–19.5 mm, B=15.4–16.0 mm, D=6.2–6.5 mm, E=4.6–5.6 mm, G=1.5–2.0 mm, H≈1.3 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU406 and W04M, RS405LDI-F offers optimal balance of compact RS-4L footprint, 600 V rating for global mains compatibility, and UL recognition-making it preferred for cost-sensitive, space-limited industrial and appliance designs where regulatory compliance is required.

Availability

RS405LDI-F is available at Aetrix Electronics and suitable for industrial motor drives, offline AC-DC power supplies, and appliance control boards requiring stable component supply and UL-compliant rectification.

Supply support for RS405LDI-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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection.

RS40xL series belongs to Diodes' general-purpose bridge rectifier product line, designed for reliable AC-to-DC conversion in cost-sensitive industrial, consumer, and computing power applications.

FAQ

What is the maximum allowable case temperature for continuous operation?

The RS405LDI-F supports continuous operation up to 50°C case temperature at full 4.0 A I(AV). Above this, current must be linearly derated to zero at 140°C, per Figure 1 in DS21315 Rev. 5. This curve applies to single-phase, 60 Hz resistive or inductive loads.

Is RS405LDI-F suitable for capacitive-input filter applications?

No-capacitive-input filters require 20% derating of I(AV) per the datasheet. At 50°C ambient, usable current drops to 3.2 A. For high-capacitance bulk inputs, consider thermal modeling and verify ripple current limits on downstream capacitors.

Does RS405LDI-F have an isolated mounting surface?

No-the RS-4L package has non-isolated leads; the metal frame is electrically connected to the DC– terminal. For heatsink isolation, use insulating hardware or select TO-220-based alternatives like W04M with isolated tab.

What is the I²t rating and how is it used in fuse selection?

RS405LDI-F has an I²t rating of 166 A²s for fusing (t < 8.3 ms). This value determines the minimum let-through energy a fast-acting fuse must withstand during worst-case surge events without clearing, ensuring robust inrush tolerance while protecting against short-circuit faults.