Diodes Incorporated ZXTP25012EZTA

Overview

ZXTP25012EZTA from Diodes Incorporated is a 20V PNP high-gain bipolar junction transistor in SOT89 package, rated for -4.5A continuous collector current, -12V V_CEO, and featuring V_CE(sat) < -70 mV at -1 A. It serves as a high-side switch or MOSFET gate driver in power management circuits requiring low on-resistance (R_sat = 45 mΩ) and high DC current gain (h_FE = 500 min @ -10 mA).

For engineers reviewing the ZXTP25012EZTA datasheet, ZXTP25012EZTA pinout, ZXTP25012EZTA application, or ZXTP25012EZTA equivalent, key selection criteria include its -12V V_CEO rating, thermal resistance of 51°C/W on 50 mm × 50 mm PCB, complementary pairing with ZXTN25012EZ, and suitability for automotive-grade designs when qualified per AEC-Q101.

Technical Context

This PNP transistor operates in linear or saturated switching mode with guaranteed BV_CEO ≥ -12 V and V_BE(sat) ≤ -1.1 V at -4.5 A. Its f_T = 310 MHz supports fast switching transitions, while C_obo = 16.9–30 pF and C_ibo = 127–250 pF define small-signal capacitance behavior under bias.

Thermal performance is defined across five mounting conditions: R_θJA ranges from 117°C/W (15 mm × 15 mm PCB) to 28°C/W (short-duration pulse), with R_θJC = 7.95°C/W confirming efficient heat transfer from junction to collector tab.

Key Specifications

Pinout & Package

Package: SOT89 - Surface-mount plastic package with exposed collector tab for thermal and electrical connection; dimensions per JEDEC TO-243AA standard (D = 4.50 mm, E = 2.50 mm, H = 4.10 mm, L = 1.05 mm).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-current switching applications.

Compared with ZXTP25012EZTA, ZXTP2012ZTA offers higher voltage tolerance but reduced current handling and higher conduction loss, while MMDT3906-7-F lacks the thermal and current capability for power applications-making ZXTP25012EZTA the sole fit for 4.5 A high-side switching where low R_sat and robust thermal performance are mandatory.

Availability

ZXTP25012EZTA is available at Aetrix Electronics and suitable for high-side switch designs, battery charging circuits, and MOSFET gate drivers requiring stable component supply, automotive-qualified sourcing, and RoHS-compliant packaging.

Supply support for ZXTP25012EZTA 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial and automotive markets.

ZXTP25012EZTA belongs to Diodes' high-gain PNP transistor product line, engineered for high-current switching in space-constrained power stages where low V_CE(sat) and thermal robustness are essential.

FAQ

What is the maximum continuous collector current for ZXTP25012EZTA?

The ZXTP25012EZTA is rated for -4.5 A continuous collector current when mounted on a 50 mm × 50 mm × 0.6 mm FR4 PCB with 1 oz copper. This rating assumes steady-state operation at +25°C ambient and accounts for the device's 2.4 W power dissipation limit and 51°C/W thermal resistance.

Does ZXTP25012EZTA have AEC-Q101 qualification?

ZXTP25012EZTA is not automatically AEC-Q101 qualified; however, Diodes Incorporated offers an AEC-Q101-qualified version upon request for automotive applications. Customers must contact Diodes or an authorized representative to initiate PPAP documentation and confirm qualification status for specific lot releases.

How is the collector terminal connected in the SOT89 package?

In the ZXTP25012EZTA SOT89 package, the collector is electrically and thermally connected to the large exposed metal tab on the underside of the package. Pin 2 (center lead) is also internally bonded to this tab, making both the tab and Pin 2 the collector terminal-requiring proper PCB copper pour and solder mask clearance for optimal thermal performance.

Can ZXTP25012EZTA replace ZXTN25012EZ in a circuit?

No-ZXTP25012EZTA is a PNP transistor, while ZXTN25012EZ is its complementary NPN counterpart. They are not interchangeable. Substituting one for the other would invert circuit polarity and likely cause functional failure; they are intended for paired use in push-pull or complementary switching topologies.