Diodes Incorporated DF1501S

Overview

DF1501S from Diodes Incorporated is a 1.5A surface-mount standard recovery bridge rectifier with 100V peak repetitive reverse voltage (VRRM), 1.1V maximum forward voltage at 1.5A, and 10µA maximum reverse leakage current at 25°C. It features glass-passivated die construction, 50A non-repetitive surge capability, and UL recognition (E364304), designed for AC/DC front-end rectification in compact power supplies.

For engineers reviewing the DF1501S datasheet, DF1501S pinout, DF1501S application, or DF1501S equivalent, key selection considerations include its DF-S package thermal resistance (40°C/W), 100V blocking rating, 1.5A average forward current at +40°C ambient, and suitability for industrial SMPS, LED drivers, and auxiliary power rails where cost-effective, surface-mount bridge integration is required.

Technical Context

This single-phase, full-wave bridge rectifier integrates four silicon diodes in a monolithic DF-S molded plastic package. Its standard recovery characteristics (typical reverse recovery time not specified but consistent with standard recovery class) support operation at line frequency (50/60Hz) with resistive or inductive loads; capacitive loads require 20% current derating.

Thermal performance is defined with 5.0mm² copper land pads (0.03mm thick), yielding 40°C/W junction-to-ambient resistance. The device operates across –55°C to +150°C and maintains 10µA IR at 25°C and 500µA at 125°C, enabling use in thermally constrained environments without active cooling.

Key Specifications

Pinout & Package

Package: DF-S - Surface-mount molded plastic package (UL 94V-0), dimensions 7.4–7.9mm × 6.2–6.5mm × 1.0–1.2mm height, with tin-plated leads solderable per 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 GBU2K and MB151, DF1501S uniquely combines UL recognition, DF-S surface-mount compatibility, and verified 40°C/W thermal performance-making it optimal for new industrial and consumer designs requiring certified, compact, and thermally efficient AC/DC rectification.

Availability

DF1501S is available at Aetrix Electronics and suitable for industrial SMPS input stages, LED driver auxiliary supplies, appliance power modules, and IoT gateway AC adapters requiring stable component supply, RoHS compliance, and UL safety recognition.

Supply support for DF1501S 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

DF1501S belongs to Diodes' DF-series standard recovery bridge rectifiers, engineered for cost-sensitive, surface-mount AC/DC conversion in applications demanding safety certification, thermal efficiency, and long-term reliability under continuous operation.

FAQ

What is the maximum operating temperature for DF1501S?

The DF1501S has a specified operating junction temperature range of –55°C to +150°C. Its thermal resistance is 40°C/W junction-to-ambient on a standard 5.0mm² copper pad. At 1.5A average forward current and 25°C ambient, junction temperature rise is approximately 60°C, resulting in ~85°C junction temperature-well within safe limits. Derating curves in the datasheet confirm usable current down to –40°C ambient.

Is DF1501S suitable for capacitive-input filter applications?

No-DF1501S requires 20% current derating when used with capacitive-input filters due to higher peak currents and increased thermal stress. The datasheet explicitly states this limitation for capacitive loads. For such topologies, consider fast- or ultrafast-recovery bridges with lower I²t ratings and optimized soft recovery, or verify thermal margin using measured waveforms and worst-case ambient conditions.

Does DF1501S meet automotive qualification standards?

DF1501S is not AEC-Q101 qualified. While Diodes offers automotive-grade variants in the DF-series (e.g., DF1501S-AU), the standard DF1501S is intended for industrial and commercial applications. Automotive use requires explicit AEC-Q101 qualification, PPAP documentation, and IATF 16949 manufacturing-none of which apply to the base part number without the "-AU" suffix.

How does the DF-S package compare to GBPC or KBU packages in size and thermal performance?

The DF-S package measures 7.65mm × 6.35mm × 1.1mm, significantly smaller than through-hole GBPC (22mm × 18mm) or KBU (19mm × 15mm) packages. Its 40°C/W RθJA is superior to typical GBPC (≈65°C/W) and KBU (≈55°C/W) on equivalent PCB area, enabling higher power density in SMT designs without heatsinks-though absolute power handling remains limited by its 1.5A rating.