Diodes Incorporated DL4004-13

Overview

DL4004-13 from Diodes Incorporated is a glass passivated surface-mount silicon rectifier diode rated for 1.0A average forward current, 400V peak repetitive reverse voltage (VRRM), and 1.1V maximum forward voltage at 1.0A. It features low leakage (5.0µA at 25°C), 30A non-repetitive surge capability, and MELF package construction for high reliability in power conversion stages of AC/DC adapters and industrial power supplies.

For engineers reviewing the DL4004-13 datasheet, DL4004-13 pinout, DL4004-13 application, or DL4004-13 equivalent, key selection criteria include VRRM derating at elevated ambient temperature, thermal resistance (50K/W junction-to-ambient), junction capacitance (15pF at 4V), and MELF mechanical dimensions (A: 4.8–5.2mm, B: 2.4–2.6mm) for PCB layout and thermal management.

Technical Context

This device operates as a single-phase, half-wave rectifier under resistive or inductive loads at 60Hz. Its glass passivation ensures stable reverse characteristics across -55°C to +150°C operating range and supports reliable operation in high-humidity or thermally cycling environments.

The MELF package enables uniform heat dissipation with no leads, while its cathode band polarity marking and UL 94V-0 compliant plastic case meet safety requirements for surface-mount power stage implementations where creepage and flammability are design constraints.

Key Specifications

Pinout & Package

MELF (Metal Electrode Leadless Face) cylindrical surface-mount package with axial cathode band marking; no discrete pins - terminals are soldered directly to PCB pads at opposite ends of the cylinder. Dimensions: A = 4.8–5.2mm (length), B = 2.4–2.6mm (diameter), C = 0.55mm (lead diameter nominal).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current surface-mount rectifier applications.

Compared with MUR140G and VS-1N4004-M3/54, DL4004-13 offers superior thermal symmetry and reflow compatibility in high-volume SMT manufacturing, while trading off ultrafast recovery for lower cost and proven reliability in 50/60Hz and <50kHz applications.

Availability

DL4004-13 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial PLC power modules, LED driver bulk charging circuits, and DC motor freewheeling paths requiring stable component supply and long-term manufacturability.

Supply support for DL4004-13 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 devices for industrial, computing, and consumer markets.

The DL4001–DL4007 series targets cost-sensitive, high-volume surface-mount rectification needs where robustness, consistent VF, and MELF thermal performance outweigh ultrafast recovery requirements.

FAQ

What is the maximum allowable ambient temperature for DL4004-13 at full 1.0A load?

At 1.0A continuous forward current, DL4004-13 must be operated below 75°C ambient temperature per its derating curve (Figure 1). Above this, current must be reduced linearly to zero at 150°C junction temperature, assuming 50K/W thermal resistance and no heatsinking. PCB copper area significantly affects actual usable ambient limit.

Can DL4004-13 replace 1N4004 in existing designs?

Yes, DL4004-13 matches 1N4004's 400V VRRM, 1.0A IO, and 1.1V VF, but uses a MELF surface-mount package instead of DO-41 through-hole. Replacement requires PCB redesign for SMT pads and reflow profile adjustment; electrical behavior is functionally identical in rectifier applications.

Is DL4004-13 suitable for use in a full-wave bridge configuration?

Yes - DL4004-13 is rated for single-phase, half-wave rectification per datasheet conditions, but four units can construct a discrete full-wave bridge. Each diode must handle 1.0A average current and 400V reverse voltage; ensure symmetrical PCB layout and thermal coupling to avoid current imbalance and localized overheating.

Does DL4004-13 have AEC-Q200 qualification for automotive use?

No - DL4004-13 is not AEC-Q200 qualified. While it operates from -55°C to +150°C and meets UL 94V-0, Diodes Incorporated does not list automotive qualification for this part. For automotive applications, consider AEC-Q200-rated alternatives such as the ZLLS400BT or SB140.