Diodes Incorporated MMBD2004SWQ-7-F

Overview

MMBD2004SWQ-7-F from Diodes Incorporated is an AEC-Q101-qualified dual high-voltage switching diode in SOT323 package, featuring 300 V repetitive peak reverse voltage, 50 ns reverse recovery time, and 100 nA leakage at 240 V - deployed in automotive power supply rail clamping and ECU input protection circuits.

For engineers reviewing the MMBD2004SWQ-7-F datasheet, MMBD2004SWQ-7-F pinout, MMBD2004SWQ-7-F application, or MMBD2004SWQ-7-F equivalent, key selection criteria include reverse breakdown margin, switching speed under 30 mA commutation, thermal derating above 25°C ambient, and automotive-grade reliability validation per AEC-Q101.

Technical Context

This dual discrete diode integrates two independent silicon PN junctions in a single SOT323 surface-mount package, each rated for 300 V V_RRM and capable of 625 mA peak repetitive forward current. Its fast trr ≤ 50 ns enables use in high-frequency flyback snubbers and signal-level clamping where timing integrity is critical.

The device operates across –65°C to +150°C with 500°C/W junction-to-ambient thermal resistance on FR-4 PCBs using recommended pad layout. Leakage remains ≤100 nA at VR = 240 V and TJ = 25°C, supporting low-power sensing nodes in engine control modules.

Key Specifications

Pinout & Package

Package: SOT323 - 3-terminal plastic surface-mount case, 2.1 mm × 1.3 mm footprint, 0.9 mm height, matte tin-plated copper leadframe, moisture sensitivity level 1.

Key Features

Applications

Availability

MMBD2004SWQ-7-F is available at Aetrix Electronics and suitable for automotive power management, ECU signal conditioning, and lighting driver protection requiring stable component supply with AEC-Q101 compliance and full RoHS/Green certification.

Supply support for MMBD2004SWQ-7-F 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 centers across Asia and manufacturing in China, Taiwan, and the U.S.

This part belongs to Diodes' Automotive-Grade Discrete Diode product line, engineered specifically for under-hood and chassis-mounted electronics demanding extended temperature operation, high-reliability qualification, and stringent environmental compliance.

FAQ

What is the maximum allowable junction temperature for MMBD2004SWQ-7-F?

The absolute maximum junction temperature is +150°C, validated per AEC-Q101 thermal cycling and high-temperature operating life tests. Derating begins at +25°C ambient, with full 250 mW power dissipation only permissible below +25°C; above that, linear derating applies at 0.5 mW/°C per Figure 1 in DS30443 Rev. 8-2.

Is MMBD2004SWQ-7-F pin-compatible with MMBD2004SW-7-F?

Yes - both share identical SOT323 package, pinout (Anode1–CathodeCommon–Anode2), and electrical specifications. The "Q" suffix denotes AEC-Q101 qualification; the standard version lacks automotive stress testing but uses the same die and assembly process.

Can this dual diode be used as a single high-voltage rectifier?

No - the internal configuration is two anodes tied to a common cathode (dual-anode, single-cathode). It cannot function as a single high-current rectifier; each element is rated for 225 mA continuous and must be used independently or in parallel only if matched forward voltage and thermal coupling are ensured.

Does MMBD2004SWQ-7-F meet JESD22-A114 for ESD robustness?

No - the datasheet does not specify Human Body Model (HBM) or Charged Device Model (CDM) ESD ratings. Its primary transient protection capability derives from 300 V V_RRM and low capacitance, not ESD clamp structure; external TVS devices are required for IEC 61000-4-2 compliance.