Diodes Incorporated DF1504S

Overview

DF1504S from Diodes Incorporated is a surface-mount standard recovery bridge rectifier with 400 V peak repetitive reverse voltage (VRRM), 1.5 A average forward rectified current (IO), and 1.1 V maximum forward voltage drop at 1.5 A per element. It features glass-passivated die construction, 50 A non-repetitive peak forward surge capability, and is UL-recognized (E364304) for use in AC/DC power supplies and industrial control power stages.

For engineers reviewing the DF1504S datasheet, DF1504S pinout, DF1504S application, or DF1504S equivalent, key selection considerations include its 400 V blocking rating, thermal resistance of 40 °C/W (junction-to-ambient on 5 mm² pad), 25 pF typical junction capacitance per element, and compliance with RoHS 3 and AEC-Q200-ready manufacturing.

Technical Context

The DF1504S integrates four silicon diodes in a single-phase full-wave bridge configuration within a molded plastic DF-S package. Its glass-passivated junction ensures stable reverse leakage (<10 µA at 25°C, <500 µA at 125°C) and robust surge tolerance (50 A, 8.3 ms half-sine).

Designed for surface-mount assembly, it operates across –55°C to +150°C and delivers 1.1 V forward drop at rated 1.5 A load under standard test conditions (TA = 25°C, resistive/inductive 60 Hz). Capacitance is characterized at 1 MHz and 4 V reverse bias.

Key Specifications

Pinout & Package

DF1504S uses the DF-S surface-mount package: 7.4–7.9 mm × 6.2–6.5 mm × 2.4–2.6 mm body, with tin-plated leads, UL 94V-0 mold compound, and moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU4K and MB10F, DF1504S uniquely balances SMT compatibility, 40 °C/W thermal performance, and 50 A surge capability-making it optimal for space-constrained industrial power supplies requiring robustness without through-hole constraints.

Availability

DF1504S is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver input stages, and appliance control board power requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for DF1504S 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, automotive, and consumer markets.

The DF-series bridge rectifiers are engineered for surface-mount power conversion applications demanding consistent surge immunity, low forward loss, and regulatory compliance-particularly in cost-sensitive, thermally constrained AC/DC front-ends.

FAQ

What is the maximum operating temperature for DF1504S?

The DF1504S has an operating junction temperature range of –55°C to +150°C. Its thermal resistance (RθJA = 40 °C/W) is measured on a PCB with 5.0 mm² copper land. To maintain TJ ≤ 150°C at 1.5 A, ambient temperature must stay below 90°C with proper heatsinking or airflow-derating curves in Figure 1 confirm this limit.

Is DF1504S qualified for automotive applications?

DF1504S is manufactured in IATF 16949-certified facilities and supports PPAP documentation, but it is not formally AEC-Q200-qualified. For automotive-grade use, Diodes offers the AEC-Q200-compliant DF1504S-AQ variant; standard DF1504S is intended for industrial, commercial, and appliance applications unless explicitly validated per vehicle OEM requirements.

Can DF1504S be used in capacitive-input filter configurations?

No-capacitive-input filters require derating the average forward current by 20% per the datasheet. At 1.5 A rated IO, usable current drops to 1.2 A in such configurations. This limitation arises from increased peak diode conduction angle and RMS current stress; resistive or inductive loads are preferred for full-rated performance.

What is the marking code format on the DF1504S package?

The top-marking consists of three elements: a two-character manufacturer code (e.g., "Y" for year), a two-digit week code (e.g., "23"), and the product type "DF1504S". For example, "623DF1504S" indicates production in week 23 of 2026. Polarity is indicated by a cathode band adjacent to the "–" terminal, and all markings comply with JEDEC standards for readability post-reflow.