Diodes Incorporated DF10M

Overview

DF10M from Diodes Incorporated is a 1.0A standard recovery bridge rectifier with 1000V peak reverse voltage (V_RRM), 1.1V max forward voltage at 1.0A, and 10µA max reverse leakage at 25°C. It features glass-passivated die construction, 50A non-repetitive surge capability, and is optimized for PCB-mounted AC/DC front-end rectification in industrial power supplies and consumer adapters.

For engineers reviewing the DF10M datasheet, DF10M pinout, DF10M application, or DF10M equivalent, key selection criteria include its 1000V V_RRM, thermal resistance of 40°C/W (junction-to-ambient), UL recognition (E364304), RoHS-compliant lead finish, and DF-M package compatibility with automated SMT assembly.

Technical Context

This discrete bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration, enabling efficient AC-to-DC conversion without external interconnects. Its standard recovery characteristic (t_rr not specified but consistent with industry-standard 1A bridges) supports line-frequency operation up to 60Hz/50Hz with minimal switching loss.

The device operates across –55°C to +150°C junction temperature range and delivers stable performance under transient surges up to 50A (8.3ms half-sine). Its 25pF typical junction capacitance per element minimizes high-frequency noise coupling in low-EMI designs.

Key Specifications

Pinout & Package

DF10M uses the DF-M package: molded plastic body (UL 94V-0), dimensions 7.4–7.9mm × 6.2–6.5mm × 8.13–8.51mm (L×W×H), with four coplanar tin-plated leads. Polarity is marked on case; terminals are arranged as AC1, AC2, +, –.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU1K and KBP110, DF10M offers the lowest reverse leakage (10µA) and tightest thermal resistance (40°C/W) in the DF-M footprint-making it optimal for space-constrained, thermally sensitive, and regulatory-compliant AC/DC designs.

Availability

DF10M is available at Aetrix Electronics and suitable for industrial power supplies, consumer AC/DC adapters, and appliance control boards requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.

Supply support for DF10M 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

DF10M belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, reliable AC/DC conversion in high-volume power supply applications where efficiency, safety certification, and thermal performance are prioritized.

FAQ

What is the maximum operating junction temperature for DF10M?

The DF10M has a specified operating junction temperature range of –55°C to +150°C. This allows reliable operation in sealed industrial enclosures or high-ambient environments like LED driver housings. Derating curves in DS21201 Rev.16-2 confirm 1.0A average current is maintained up to +40°C ambient; above that, current must be reduced per thermal resistance (40°C/W) and board layout.

Is DF10M suitable for use in AEC-Q200 qualified automotive applications?

No-DF10M is not AEC-Q200 qualified. While Diodes offers automotive-grade variants (e.g., DF10MA series with PPAP support and IATF 16949 manufacturing), the standard DF10M is intended for industrial and consumer applications. For automotive use, contact Diodes directly to request AEC-Q200-compliant equivalents with documented change control and qualification reports.

Does DF10M require a heatsink in typical 1A applications?

No heatsink is required for DF10M in standard PCB layouts. With R_θJA = 40°C/W and P_D ≈ 1.1W (at 1.0A, 1.1V_F), junction temperature rise is ~44°C above ambient. On a 5.0mm² copper pad at +40°C ambient, T_J reaches ~84°C-well within the +150°C limit. Heatsinking becomes necessary only above 1.5A or in >+60°C ambient environments.

How does DF10M's DF-M package compare to KBP and GBU packages in terms of PCB assembly?

The DF-M package (7.7mm × 6.35mm) is significantly smaller than KBP (13.5mm × 8.5mm) and GBU (10.5mm × 8.5mm), reducing PCB area by >50%. Its coplanar leads and standardized land pattern align with IPC-7351B, supporting high-yield reflow soldering without tombstoning. Unlike KBP/GBU, DF-M lacks mounting holes-making it ideal for double-sided or space-constrained boards where mechanical anchoring isn't required.