Diodes Incorporated DFLR1200-7

Overview

DFLR1200-7 from Diodes Incorporated is a 200 V, 1.0 A glass passivated surface-mount rectifier in the PowerDI®123 package, featuring 1.1 V max forward voltage at 1.0 A and 3 µA max reverse leakage at 25°C. It delivers high surge capability (25 A IFSM), low-profile packaging (<1.1 mm height), and RoHS-compliant, halogen-free construction. It is used in AC-DC adapters, DC-DC converters, and freewheeling paths where compact size and thermal efficiency are critical.

For engineers reviewing the DFLR1200-7 datasheet, DFLR1200-7 pinout, DFLR1200-7 application, or DFLR1200-7 equivalent, key selection criteria include peak repetitive reverse voltage (200 V), average forward current rating (1.0 A), thermal resistance junction-to-solder point (6 °C/W), and compatibility with automated SMT assembly on FR-4 PCBs using Diodes' AP02001 pad layout.

Technical Context

This device is a single-phase, silicon planar epitaxial PN-junction rectifier optimized for general-purpose switching and freewheeling. Its glass passivation ensures stable reverse characteristics across temperature, while the patented interlocking clip design enhances mechanical robustness and surge survivability under 8.3 ms half-sine stress.

The PowerDI®123 package enables direct thermal conduction from die to PCB cathode pad, achieving R_θJS = 6 °C/W when mounted per AP02001 layout. Total capacitance is 10 pF at 4 V reverse bias and 1 MHz, supporting moderate-speed switching in offline and isolated DC-DC topologies.

Key Specifications

Pinout & Package

Package: PowerDI®123 - surface-mount, low-profile (≤1.1 mm height), single-cathode-band marking, molded green compound (UL 94V-0), matte tin-plated copper leadframe.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar general-purpose rectifier applications.

Compared with SB120-TB and 1N4001G, DFLR1200-7 uniquely balances low VF (1.1 V), ultra-low IR (3 µA), SMT readiness, and 25 A surge rating-making it optimal for production-grade AC-DC and DC-DC converters requiring reliability, efficiency, and manufacturability.

Availability

DFLR1200-7 is available at Aetrix Electronics and suitable for AC-DC adapters, DC-DC converters, and freewheeling diode applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for DFLR1200-7 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 the Americas.

The DFLR series belongs to Diodes' Power Discrete Rectifier product line, engineered specifically for high-reliability, high-volume SMT power conversion applications demanding low profile, low leakage, and robust surge tolerance.

FAQ

What is the maximum junction temperature for DFLR1200-7?

The absolute maximum junction temperature is +150°C, and the storage temperature range matches this, from –65°C to +150°C. Operation at TJ > 150°C risks irreversible degradation of the glass passivation layer and increased reverse leakage, so thermal design must ensure TJ remains within limits using the published RθJS = 6 °C/W and ambient derating curve in Figure 4.

Is DFLR1200-7 suitable for synchronous rectification?

No - DFLR1200-7 is a passive PN-junction rectifier, not a MOSFET-based synchronous rectifier. It lacks gate control, body diode optimization, or low RDS(on) characteristics. It functions only as a unidirectional, voltage-controlled switch with fixed VF and reverse recovery behavior; synchronous rectification requires actively driven FETs with precise timing control.

Does DFLR1200-7 have a specified reverse recovery time (trr)?

No - the datasheet does not specify trr because the device is characterized as a general-purpose, moderately fast rectifier, not an ultrafast or soft-recovery type. Its behavior under switching is governed by junction capacitance (10 pF) and stored charge; for hard-switched topologies above 100 kHz, designers should verify EMI and efficiency impact empirically or consider dedicated ultrafast alternatives.

Can DFLR1200-7 be used in place of DFLR1400-7 or DFLR1600-7?

Only if the circuit's peak reverse voltage stays ≤200 V. DFLR1200-7 has VRRM = 200 V versus 400 V and 600 V for the -1400 and -1600 variants. Substituting it into a 400 V design risks catastrophic breakdown during transients. All three share identical IO, VF, IR, package, and thermal specs - only VRRM differs, making voltage rating the sole determining factor for interchangeability.