onsemi CPH3140-TL-E

Overview

CPH3140-TL-E from onsemi is a PNP bipolar junction transistor rated for −100 V V_CEO, −1 A continuous collector current, and low −0.4 V typical V_CE(sat) at −400 mA/−40 mA drive, fabricated using FBIT/MBIT processes in the CPH3 (SOT-23) package. It serves as a high-speed switching element in power management and signal amplification circuits requiring compact size and robust breakdown voltage.

For engineers reviewing the CPH3140-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include its −100 V V_CEO, −120 V V_CBO, 120 MHz f_T, low saturation voltage, and SOT-23 footprint compatibility with high-density hybrid IC layouts.

Technical Context

The CPH3140-TL-E employs onsemi's FBIT and MBIT fabrication processes to achieve high breakdown voltage and fast switching performance. Its PNP polarity, −100 V V_CEO, and −1 A I_C rating support use in high-side switching and linear regulation where reverse-polarity operation is required.

With a gain-bandwidth product of 120 MHz and switching times of t_on = 80 ns, t_stg = 850 ns, and t_f = 50 ns, it delivers reliable high-speed performance under −5 V V_CE bias and −100 mA to −1 A operating currents, validated across −25°C to +75°C ambient conditions.

Key Specifications

Pinout & Package

CPH3140-TL-E is housed in the CPH3 package, identical to JEITA SC-59 / JEDEC TO-236 / industry-standard SOT-23, with 3-pin surface-mount configuration and Pb-free plating.

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 CPH3140-TL-E uniquely combines −100 V rating, −1 A capability, and SOT-23 packaging - enabling high-reliability high-side switching in modern telecom and industrial SMT platforms where voltage headroom and thermal density are critical.

Availability

CPH3140-TL-E is available at Aetrix Electronics and suitable for DC power switching, industrial relay drivers, high-voltage signal amplification, and compact hybrid ICs requiring stable component supply and full Pb-free compliance.

Supply support for CPH3140-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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The CPH3140-TL-E belongs to onsemi's CPH series of high-voltage PNP/NPN transistors designed specifically for high-density hybrid ICs and compact power switching applications demanding low saturation voltage and fast switching in SOT-23 form factor.

FAQ

What is the maximum continuous collector current rating for CPH3140-TL-E?

The CPH3140-TL-E is rated for −1 A continuous collector current (I_C) at T_a = 25°C when mounted on a ceramic substrate (600 mm² × 0.8 mm). Derating applies above 25°C ambient, with junction temperature limited to 150°C. This rating supports medium-power switching loads such as solenoids, relays, and LED arrays without external heatsinking in well-ventilated designs.

Is CPH3140-TL-E compatible with standard SOT-23 footprints?

Yes, CPH3140-TL-E uses the CPH3 package, which is mechanically identical to JEDEC TO-236 and JEITA SC-59 - fully compatible with standard SOT-23 land patterns and pick-and-place equipment. The pinout (1=Base, 2=Emitter, 3=Collector) matches common SOT-23 PNP layouts, enabling drop-in replacement in existing designs that observe its voltage and current ratings.

What is the typical V_CE(sat) of CPH3140-TL-E under standard test conditions?

The typical V_CE(sat) of CPH3140-TL-E is −0.1 V at I_C = −400 mA and I_B = −40 mA (I_C/I_B = 10), with a maximum of −0.4 V under the same conditions. This low saturation voltage directly reduces conduction losses and improves efficiency in high-duty-cycle switching applications, especially when used in −48 V or −24 V power rails.

Does CPH3140-TL-E meet RoHS and Pb-free requirements?

Yes, CPH3140-TL-E is explicitly marked "Pb Free" in the ordering information and complies with RoHS Directive 2011/65/EU. The "-TL-E" suffix denotes tape-and-reel packaging with lead-free termination finish, verified per J-STD-609. All onsemi CPH3-series devices shipped after 2013 meet full exemption-free RoHS compliance.

How does the gain-bandwidth product (f_T) of CPH3140-TL-E affect its use in amplifier circuits?

The CPH3140-TL-E has a minimum f_T of 120 MHz at V_CE = −10 V and I_C = −100 mA, enabling stable small-signal amplification up to ~10–15 MHz in common-emitter configurations. While not optimized for RF, this f_T supports wideband sensor buffering, audio preamp stages, and fast comparator output drivers where PNP polarity and high V_CEO are essential design constraints.