Diodes Incorporated FMMT722TC

Overview

FMMT722TC from Diodes Incorporated is a PNP silicon low-saturation transistor in SOT-23 package, rated for -70V V_CEO, -1.5A continuous collector current, and < -220mV V_CE(sat) at -1A. It delivers 140mΩ equivalent on-resistance and is AEC-Q101 qualified for automotive high-side driver and load disconnect applications.

For engineers reviewing the FMMT722TC datasheet, FMMT722TC pinout, FMMT722TC application, or FMMT722TC equivalent, key selection criteria include verified -70V breakdown voltage, pulsed -3A capability, thermal resistance of 155°C/W (note 7), h_FE ≥ 40 at -1.5A, and RoHS/Green compliance with matte tin plating.

Technical Context

This PNP transistor operates as a high-current, low-V_CE(sat) switching device with characterized h_FE down to -3A and guaranteed -70V BV_CEO. Its design supports stable DC conduction and fast switching (t_on = 40ns, t_off = 700ns) under pulsed conditions (≤300µs, ≤2% duty cycle).

Thermal performance is defined for surface-mount operation on 25mm × 25mm FR4 with 1 oz copper: 806mW power dissipation at t ≤ 5 sec and R_θJA = 155°C/W. The device uses a fully lead-free, halogen/antimony-free "Green" molding compound rated UL 94V-0.

Key Specifications

Pinout & Package

Package: SOT-23 - Surface-mount plastic case, 0.008 g weight, UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP low-saturation transistor applications.

Compared with ZXTN25050DFH and DMT3005LKQ, the FMMT722TC uniquely balances AEC-Q101 compliance, -70V rating, and proven -1.5A continuous performance in high-side roles-making it optimal for automotive body electronics where qualification and polarity are non-negotiable.

Availability

FMMT722TC is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controllers, and consumer appliance power management requiring stable component supply and long-term lifecycle support.

Supply support for FMMT722TC 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 and manufacturing operations across Asia and the Americas.

The FMMT722TC belongs to Diodes' high-reliability bipolar transistor product line, engineered specifically for automotive and industrial power switching where low saturation voltage, AEC-Q101 qualification, and thermal robustness are critical.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The FMMT722TC has an operating junction temperature range of -55°C to +150°C. For continuous DC operation, thermal design must ensure T_J stays within this limit using the specified R_θJA = 155°C/W (note 7) and ambient conditions. Derating begins above +25°C ambient, with max power dropping linearly to zero at +150°C.

Is FMMT722TC pin-compatible with other SOT-23 PNP transistors?

Yes-the FMMT722TC uses standard SOT-23 pinout (Emitter-Base-Collector on pins 1-2-3), matching JEDEC TO-236AB. However, electrical parameters (e.g., V_CEO, h_FE, V_CE(sat)) differ significantly across manufacturers; substitution requires validation of gain, saturation, and thermal behavior in the target circuit.

Does the device support linear (analog) operation, or is it optimized only for switching?

The FMMT722TC is characterized for both modes: h_FE is specified up to -3A, and V_BE(sat) and V_CE(sat) are tested under pulsed conditions supporting linear biasing. Its f_T = 150 MHz and low C_obo = 14 pF enable stable analog current sink use, though thermal limits apply in continuous linear operation.

What does "PPAP capable" mean for FMMT722TC in automotive procurement?

"PPAP capable" means Diodes Incorporated maintains full Production Part Approval Process documentation-including design records, process flow, PFMEA, control plans, and initial process studies-for the FMMT722TC. This enables direct submission to Tier 1 automotive customers for APQP compliance without requiring additional qualification testing by the end user.