Diodes Incorporated ZXTP25012EFHTA

Overview

ZXTP25012EFHTA from Diodes Incorporated (formerly Zetex Semiconductors) is a PNP medium-power bipolar junction transistor in SOT23 package, rated for V_CEO = −12 V, I_C(cont) = −4 A, V_CE(sat) = −65 mV @ −1 A/−100 mA, h_FE ≥ 500, and P_D = 1.25 W on 50 mm × 50 mm PCB. It serves as a high-gain, low-saturation switch in high-side driver and MOSFET gate drive circuits.

For engineers reviewing the ZXTP25012EFHTA datasheet, ZXTP25012EFHTA pinout, ZXTP25012EFHTA application, or ZXTP25012EFHTA equivalent, key selection criteria include verified −4 A continuous collector current capability, confirmed −65 mV saturation voltage at industrial-grade bias conditions, thermal resistance of 100 °C/W under standard mounting, and SOT23-compatible footprint for space-constrained DC-DC converter designs.

Technical Context

This PNP transistor employs an advanced epitaxial process to achieve high current gain (h_FE = 500–1500) across operating ranges while maintaining low V_CE(sat) down to −50 mV. Its f_T = 310 MHz supports fast switching in gate-drive and motor-control applications.

The device is characterized with multiple thermal derating profiles: R_JA = 100 °C/W on 50 mm × 50 mm FR4 (2 oz Cu), enabling reliable operation up to T_j = 150 °C. Absolute maximum ratings include V_CBO = −12 V, V_EBO = −7 V, and I_CM = −10 A peak pulse current.

Key Specifications

Pinout & Package

SOT23-3 plastic surface-mount package (JEDEC TO-236AB); dimensions: D = 2.80–3.04 mm, E = 2.10–2.64 mm, e = 0.95 mm pitch; 3-lead configuration with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power switching applications.

Compared with ZXTN25012EFHTA and MMBT4403, ZXTP25012EFHTA uniquely delivers −4 A continuous current and −65 mV saturation in SOT23 - making it the sole option among these three for high-efficiency, high-current PNP switching without package upgrade.

Availability

ZXTP25012EFHTA is available at Aetrix Electronics and suitable for MOSFET gate driving, DC-DC converters, and motor drive applications requiring stable component supply and consistent parametric performance across production batches.

Supply support for ZXTP25012EFHTA 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 acquired Zetex Semiconductors in 2008 and maintains its high-performance analog and discrete product lines with ISO 9001 and IATF 16949 certification.

This device belongs to Zetex's medium-power bipolar transistor family, engineered specifically for high-current, low-saturation switching in compact power management and interface circuits.

FAQ

What is the maximum continuous collector current for ZXTP25012EFHTA under standard PCB conditions?

The maximum continuous collector current is −4 A when mounted on a 50 mm × 50 mm × 1.6 mm FR4 PCB with high-coverage 2 oz copper, as specified in the Absolute Maximum Ratings table (Issue 2, p.2). Derating applies above +25°C ambient per 9.6 mW/°C linear factor.

Does ZXTP25012EFHTA support high-frequency switching applications?

Yes - its 310 MHz transition frequency (f_T) and measured switching times (t_r = 62 ns, t_f = 65 ns) confirm suitability for high-frequency gate driving and DC-DC converter control up to ~1–2 MHz, provided base drive strength and layout minimize parasitic inductance.

Can ZXTP25012EFHTA be used in place of a MOSFET for high-side switching?

It functions effectively as a high-side PNP switch in low-to-medium frequency applications (<500 kHz), offering lower gate drive complexity than PMOS. However, unlike MOSFETs, it requires sustained base current and exhibits higher conduction loss above −1 A due to V_CE(sat) rise - verify thermal margin at target load current.

What is the emitter-base breakdown voltage rating?

The emitter-base breakdown voltage (V_EBO) is −7 V minimum, tested at I_E = −100 µA (not −100 A - correction per datasheet footnote on p.4). This defines the maximum reverse bias allowable between emitter and base before avalanche conduction begins.