onsemi MCH3209-TL-E

Overview

MCH3209-TL-E from onsemi is a PNP bipolar junction transistor in MCPH3 (SC-70/SOT-323) package, rated for –30 V V_CEO, –3 A I_C, and low V_CE(sat) of –120 mV at I_C = –1.5 A / I_B = –30 mA. It delivers high-speed switching (t_on = 30 ns, t_f = 15 ns), f_T = 450 MHz, and operates up to 150°C junction temperature - used in compact relay drivers and motor control stages.

For engineers reviewing the MCH3209-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, ultra-low saturation voltage under high current, SC-70 thermal performance on ceramic substrate, and guaranteed h_FE range of 200–560 at –2 V V_CE and –500 mA I_C.

Technical Context

The MCH3209-TL-E is a discrete PNP BJT optimized for medium-power switching with emphasis on low V_CE(sat) and fast transition times. Its MBIT process enables high current gain consistency across temperature (–25°C to +75°C) and supports stable DC biasing with V_BE(sat) = –0.83 to –1.2 V at –1.5 A I_C.

It features a 0.85 mm mounting height and 0.007 g mass, targeting space-constrained PCBs. Electrical behavior is characterized under pulsed conditions (1 ms, 10% duty cycle) and DC operation, with validated Cob = 20 pF at V_CB = –10 V and f = 1 MHz - critical for EMI-sensitive driver circuits.

Key Specifications

Pinout & Package

Package: MCPH3 (JEITA SC-70 / JEDEC SOT-323), 3-pin ultrasmall plastic surface-mount package with 0.65 mm pin pitch and 0.85 mm max height.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP bipolar transistor applications.

Compared with MMBT3906LT1G and PN2907A, the MCH3209-TL-E uniquely combines –3 A current capability, –120 mV V_CE(sat), and SC-70 packaging - enabling higher-power density in automated SMT production without sacrificing switching fidelity.

Availability

MCH3209-TL-E is available at Aetrix Electronics and suitable for relay drivers, lamp drivers, and motor drivers requiring stable component supply, RoHS-compliant packaging, and consistent parametric performance across production lots.

Supply support for MCH3209-TL-E 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The MCH3209-TL-E belongs to onsemi's general-purpose bipolar transistor product line, engineered for high-reliability discrete switching in space-constrained, thermally demanding environments such as factory automation controllers and portable instrumentation.

FAQ

What is the absolute maximum collector-to-emitter voltage rating for the MCH3209-TL-E?

The MCH3209-TL-E has an absolute maximum V_CEO rating of –30 V at T_a = 25°C. This value is specified with the base open and defines the upper limit of reverse-biased collector-emitter voltage before breakdown. Exceeding this rating may cause permanent device damage, and operation should remain within recommended conditions (–25°C to +75°C ambient) for reliability. The MCH3209-TL-E must not be operated above –30 V V_CEO under any condition.

Does the MCH3209-TL-E support high-frequency switching applications?

Yes, the MCH3209-TL-E supports high-frequency switching with a gain-bandwidth product (f_T) of 450 MHz and measured switching times of t_on = 30 ns and t_f = 15 ns under standard test conditions. These parameters enable reliable operation in PWM-driven loads up to 10 MHz, provided layout minimizes parasitic inductance. The MCH3209-TL-E is commonly deployed in flash trigger circuits and high-speed relay control where edge fidelity matters.

What is the package type and pin configuration of the MCH3209-TL-E?

The MCH3209-TL-E uses the MCPH3 package - identical to JEITA SC-70 and JEDEC SOT-323 - with three terminals: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. The package measures 2.1 × 1.6 × 0.85 mm and features a 0.65 mm lead pitch. This configuration is standardized across onsemi's MCH3xxx series, and the MCH3209-TL-E marking appears on the top surface adjacent to Pin 1.

How does the DC current gain (h_FE) of the MCH3209-TL-E vary with operating conditions?

The MCH3209-TL-E exhibits h_FE = 200–560 at V_CE = –2 V and I_C = –500 mA, with tested stability across –25°C to +75°C ambient. Gain decreases at higher currents (e.g., ~120 at I_C = –3 A) and increases slightly at elevated temperature. Designers must verify h_FE at actual operating V_CE and I_C using the published h_FE–I_C curves - the MCH3209-TL-E's gain profile supports predictable base resistor selection for saturation.

Is the MCH3209-TL-E lead-free and RoHS compliant?

Yes, the MCH3209-TL-E is lead-free and RoHS compliant, as confirmed by its "TL-E" suffix and packaging documentation. The "E" denotes Pb-free termination, and the device meets EU Directive 2011/65/EU requirements. onsemi's material declarations confirm homogeneous lead content <1000 ppm, and the MCH3209-TL-E is qualified for reflow soldering per J-STD-020 moisture sensitivity level 1 (MSL-1).