Diodes Incorporated MMBT5401-7-F

Overview

MMBT5401-7-F from Diodes Incorporated is a PNP bipolar junction transistor (BJT) in SOT23 package, rated for -150 V V_CEO, -600 mA I_C, and 310 mW power dissipation at T_A = +25°C on minimum pad layout. It delivers h_FE = 50–240 at I_C = -1 to -50 mA and V_CE = -5 V, with V_CE(sat) ≤ -0.5 V at I_C = -50 mA / I_B = -5 mA. It is widely used in low-power switching and amplification circuits in industrial control signal conditioning stages.

For engineers reviewing the MMBT5401-7-F datasheet, MMBT5401-7-F pinout, MMBT5401-7-F application, or MMBT5401-7-F equivalent, key selection criteria include its high-voltage PNP capability, JEDEC-qualified reliability, SOT23 thermal performance (R_θJA = 403 °C/W), and complementary pairing with MMBT5551 for push-pull designs.

Technical Context

This PNP transistor uses epitaxial planar die construction for stable gain and breakdown characteristics across temperature. Its -150 V V_CEO and -160 V V_CBO support high-side switching in 100–120 V DC rails, while f_T = 100–300 MHz enables audio-frequency amplification and fast digital switching up to ~10 MHz.

The device operates from -55°C to +150°C, meets AEC-Q stress test definitions for high-reliability applications, and features ESD HBM rating of 4,000 V - enabling robustness in manually assembled or reflow-soldered PCB environments without additional protection circuitry.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with 3-pin configuration, 0.008 g weight, UL 94V-0 flammability rating, and matte tin-plated leads solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-voltage transistor applications.

Compared with MMBT5401Q, the -7-F version offers identical performance at lower cost and shorter lead time but lacks automotive certification; versus PN2907A, it delivers 2.5× higher voltage rating and 20% better thermal resistance in half the footprint - making it superior for modern SMT industrial designs.

Availability

MMBT5401-7-F is available at Aetrix Electronics and suitable for industrial signal switching, audio pre-amplification, and high-voltage logic interface applications requiring stable component supply, JEDEC-qualified reliability, and RoHS 3 compliance.

Supply support for MMBT5401-7-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 the Americas.

The MMBT5401 belongs to Diodes' general-purpose bipolar transistor product line, engineered for cost-effective, high-reliability switching and amplification in industrial, computing, and consumer electronics - emphasizing voltage robustness, thermal efficiency, and environmental compliance.

FAQ

What is the maximum safe operating collector-emitter voltage for MMBT5401-7-F?

The absolute maximum V_CEO is -150 V at T_A = +25°C. Derating applies above 25°C: power dissipation must be reduced linearly by 2.48 mW/°C beyond that point. For sustained operation at elevated ambient temperatures, consult the derating curve in Figure 4 of DS30057 Rev. 12-2.

Is MMBT5401-7-F pin-compatible with other SOT23 PNP transistors?

Yes - it follows the standard SOT23 pinout (Emitter-Base-Collector on pins 1-2-3), matching industry-standard layout footprints. However, electrical parameters such as h_FE, V_CE(sat), and f_T differ significantly across vendors; direct substitution requires verification of gain, saturation voltage, and frequency response in the target circuit.

Does MMBT5401-7-F require special handling for ESD-sensitive applications?

No special handling beyond standard static-safe practices is needed: its 4,000 V HBM ESD rating exceeds typical handling thresholds. The device is qualified to JEDEC JESD22-A114 and does not require ionized air or conductive foam during board assembly - though grounding wrist straps and dissipative mats remain recommended best practice.

Can MMBT5401-7-F replace MMBT5401-13-F in a design?

Yes - both share identical electrical specifications and SOT23 packaging. The only difference is tape-and-reel quantity: -7-F ships in 3,000-unit reels (7-inch), while -13-F ships in 10,000-unit reels (13-inch). Footprint, marking (K4M), and thermal behavior are fully interchangeable; no layout or schematic changes are required.