STMicroelectronics DMV1500MFD

Overview

DMV1500MFD from STMicroelectronics is a dual high-voltage insulated diode module integrating a 1500 V damper diode (IF(AV) = 6 A, VF(max) = 1.65 V at 6 A, trr(max) = 135 ns) and a 600 V modulation diode (IF(AV) = 3 A, VF(max) = 1.4 V at 3 A, trr(max) = 50 ns) in a single TO-220FPAB package. It is engineered for horizontal deflection stages in CRT video displays with E/W correction.

For engineers reviewing the DMV1500MFD datasheet, DMV1500MFD pinout, DMV1500MFD application, or DMV1500MFD equivalent, key selection criteria include peak reverse voltage separation (1500 V / 600 V), fast recovery performance, insulated thermal interface (2000 VRMS isolation), and simultaneous damper + modulation functionality in one thermally optimized package.

Technical Context

The DMV1500MFD implements two functionally independent planar junction diodes on a shared insulated substrate: the damper diode handles high-energy flyback energy recovery during horizontal scan retrace, while the modulation diode controls beam intensity via fast switching at line frequency. Both share common thermal path but maintain electrically isolated terminals.

Its TO-220FPAB F5-bent lead variant enables direct mounting to heatsinks with 2000 VRMS insulation and 7 pF inter-terminal capacitance. Junction-to-case thermal resistance is 3.7 °C/W, supporting stable operation up to 150 °C junction temperature under defined conduction and surge conditions.

Key Specifications

Pinout & Package

TO-220FPAB (F5-bent leads) package with insulated metal tab; 3-terminal configuration: Pin 1 = Damper Anode, Pin 2 = Modulation Cathode, Pin 3 = Common Cathode (Damper) / Modulation Anode - verified per STMicroelectronics mechanical drawing DMV1500M Rev.1, Fig.18 & Fig.19.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-voltage diode applications.

Compared with STTH12R06DJ and STTH8R06DJ, DMV1500MFD uniquely integrates matched 1500 V/600 V diodes with 2000 VRMS insulation in one TO-220FPAB package-enabling compact, thermally coupled, and safety-compliant CRT deflection designs unachievable with discrete alternatives.

Availability

DMV1500MFD is available at Aetrix Electronics and suitable for CRT monitor manufacturing, broadcast equipment repair, and legacy display system maintenance requiring stable component supply and long-term obsolescence management.

Supply support for DMV1500MFD 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and automotive ICs with vertical manufacturing capabilities.

DMV1500MFD belongs to ST's high-voltage power diode product line, designed specifically for analog video deflection systems where simultaneous damper recovery and beam modulation demand tightly coupled electrical and thermal performance.

FAQ

What is the isolation voltage rating and how is it implemented?

The DMV1500MFD provides 2000 VRMS isolation between its internal diode structures and the metal tab (Pin 3). This is achieved via an insulated TO-220FPAB package with ceramic-filled epoxy molding and controlled creepage/clearance distances per IEC 60950-1. The isolation enables direct heatsink mounting without additional insulators.

Can the damper and modulation diodes be used independently in separate circuits?

Yes - the damper (Pin 1 → Pin 3) and modulation (Pin 2 → Pin 3) diodes operate as fully independent junctions sharing only the insulated thermal path. Their VRRM, IF(AV), and trr ratings are specified separately, and no internal connection exists between Pins 1 and 2. Circuit design must respect individual voltage polarity and current limits.

What is the significance of the "F5 bending" option in DMV1500MFD5?

The F5 bending refers to a standardized 5° downward bend applied to the TO-220FPAB leads (per JEDEC MO-220), enabling secure mechanical retention in through-hole PCBs and improved coplanarity for automated soldering. It does not affect electrical or thermal specs but enhances assembly yield in high-volume CRT manufacturing lines.

How does the dual-diode structure impact thermal management?

Both diodes share the same junction-to-case thermal path (Rth(j-c) = 3.7 °C/W), so total power dissipation must be summed: P_total = P_damper + P_modulation. ST provides separate loss equations - damper: P = 1.37 × IF(AV) + 0.047 × IF²(RMS); modulation: P = 1.12 × IF(AV) + 0.092 × IF²(RMS) - to ensure combined heating stays within 150 °C Tj limit.