Diodes Incorporated MMBD7000-7-F

Overview

MMBD7000-7-F from Diodes Incorporated is a dual surface-mount silicon switching diode in SOT23 package, rated for 75 V peak repetitive reverse voltage, 300 mA forward current, and featuring 4 ns reverse recovery time and 2 pF total capacitance at 0 V. It serves as a high-speed signal routing or clamping element in low-power digital interface and analog sampling circuits.

For engineers reviewing the MMBD7000-7-F datasheet, MMBD7000-7-F pinout, MMBD7000-7-F application, or MMBD7000-7-F equivalent, key selection criteria include fast switching speed (≤4 ns), low junction capacitance (≤2 pF), thermal resistance (357 °C/W), SOT23 footprint compatibility, and automotive-grade qualification readiness.

Technical Context

This dual-diode device integrates two independent, electrically isolated PN junctions in a single SOT23-3 package with common cathode configuration confirmed by top-view marking and internal schematic. Its design targets low-capacitance, low-forward-voltage switching in space-constrained signal paths where timing integrity and minimal loading are critical.

The device operates across –55 °C to +150 °C, supports 100 µA reverse leakage at 50 V, delivers VF ≤ 0.75 V at 50 mA, and maintains trr ≤ 4.0 ns under standardized 10 mA IF/IR test conditions with 0.1×IR tail current - enabling reliable use in 10–50 MHz digital edge detection and RF detector front-ends.

Key Specifications

Pinout & Package

Package: SOT23-3, surface-mount plastic molded case with matte tin-plated Alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020D; weight ≈ 0.008 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual switching diode applications.

Compared with BAT54C-7-F and NSR0230HT1G, MMBD7000-7-F uniquely balances 75 V reverse standoff, dual-diode integration, and 4 ns switching - making it optimal for mixed-voltage industrial interfaces requiring compact, robust signal routing without sacrificing speed or voltage margin.

Availability

MMBD7000-7-F is available at Aetrix Electronics and suitable for USB interface protection, industrial 4–20 mA sensor conditioning, automotive LIN bus clamping, and RF detector front-end designs requiring stable component supply and long-term manufacturability.

Supply support for MMBD7000-7-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, manufacturing, and sales operations across Asia, Europe, and North America.

The MMBD7000 belongs to Diodes' general-purpose switching diode product line, engineered for high-volume, cost-sensitive applications demanding consistent speed, low capacitance, and automotive-qualified reliability in compact SMT packages.

FAQ

What is the polarity configuration of the MMBD7000-7-F?

The MMBD7000-7-F uses a common-cathode dual-diode configuration: Pin 1 is Anode 1, Pin 2 is the shared Cathode, and Pin 3 is Anode 2. This is confirmed by the internal schematic in DS12025 Rev. 12–2 and top-view marking "KJH" with bar-coded date code. Polarity must be verified using a multimeter diode test before PCB layout finalization.

Is MMBD7000-7-F qualified for automotive applications?

The MMBD7000-7-F is not pre-qualified to AEC-Q101, but Diodes Incorporated states that automotive-grade versions with AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing are available upon request. Standard MMBD7000-7-F meets RoHS 3, halogen-free, and green standards required by Tier 1 suppliers for non-safety-critical modules.

How does thermal derating affect maximum power dissipation?

At 25 °C ambient, MMBD7000-7-F supports 350 mW; above this temperature, power must be linearly reduced per Figure 1 - e.g., at 85 °C ambient, max PD drops to ~210 mW. Derating assumes mounting on FR-4 with 1″² 2 oz copper pad; insufficient copper area accelerates junction temperature rise and shortens lifetime.

Can MMBD7000-7-F replace BAT54 series in existing designs?

Direct replacement is possible only if the circuit requires ≥75 V reverse voltage and benefits from dual-anode topology. BAT54x parts have lower VRWM (30 V) and higher VF; substituting MMBD7000-7-F may improve transient robustness but could increase forward conduction loss in low-voltage logic clamping. Layout compatibility is maintained due to identical SOT23-3 footprint.