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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated ZXTP2012A

Name: ZXTP2012A
Brand: Diodes Incorporated
SKU: ZXTP2012A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXTP2012A

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: E-Line-3

Datasheet:: ZXTP2012A.pdf

Description:: TRANS PNP 60V 3.5A E-LINE

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZXTP2012A from Zetex Semiconductors is a 60V PNP medium-power bipolar junction transistor in E-line (SOT-223) package, rated for -3.5A continuous collector current and -15A peak pulse current, with V_CE(SAT) as low as -14mV at -0.1A/-10mA drive-optimized for DC-DC converter switching stages and MOSFET gate driving circuits.

For engineers reviewing the ZXTP2012A datasheet, ZXTP2012A pinout, ZXTP2012A application, or ZXTP2012A equivalent, key selection criteria include verified low saturation voltage under high-current drive, thermal resistance (R_JA = 125°C/W on FR4), h_FE stability up to -4A, and E-line package compatibility with high-power PCB layouts.

Technical Context

This PNP transistor operates in linear and saturated switching modes, supporting fast turn-on (t_ON = 39ns) and turn-off (t_OFF = 370ns) under -1A load with matched base drive. Its f_T of 120MHz confirms suitability for high-frequency switching control loops.

The device features robust breakdown ratings: BV_CEO = -60V, BV_CBO = -100V, and BVE_BO = -7V, with leakage currents below -0.5nA at -80V V_CB, enabling reliable operation in industrial power rails up to -48V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-60V - Maximum safe collector-emitter reverse bias before avalanche in open-base configuration
I_C (cont.)	-3.5A - Sustained DC current handling without thermal runaway on standard FR4 layout
V_CE(SAT)	-14mV @ -0.1A/-10mA - Enables <10mW conduction loss in low-side switch applications
h_FE	100–300 @ -10mA to -10A - Stable current gain across full operating range supports predictable base drive design
R_JA	125°C/W - Thermal resistance on 25mm×25mm 1oz copper FR4, defining max ambient temperature for 1W dissipation
f_T	120MHz - Supports stable closed-loop compensation in >1MHz DC-DC controllers
t_OFF	370ns - Limits dead-time overhead in synchronous rectifier or half-bridge gate driver stages

Pinout & Package

E-line (SOT-223) package: 4-pin outline with emitter tab (pin 1), base (pin 2), collector (pin 3), and emitter (pin 4); thermally enhanced copper tab enables direct heatsinking to PCB ground plane.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Emitter Tab)	Main emitter connection + thermal path	Electrically and thermally tied to emitter; soldered to large copper pour for heat dissipation
Pin 2 (Base)	Current-controlled input	Receives negative base current to saturate PNP; requires current-limiting resistor in series
Pin 3 (Collector)	High-side switched output node	Connects to positive rail in high-side switch; carries full load current when saturated
Pin 4 (Emitter)	Secondary emitter connection	Redundant emitter bond for lower inductance and improved current sharing in parallel configurations

Key Features

Feature	Design Value
Ultra-low V_CE(SAT)	-14mV at light load ensures <1% conduction loss in 12V power switches
High peak current capability	-15A pulsed rating supports motor stall and inrush current handling without secondary breakdown
Stable h_FE over wide I_C	100–300 across -10mA to -10A enables single base resistor design across load range
Fast switching performance	39ns t_ON/370ns t_OFF minimizes overlap loss in complementary BJT or MOSFET driver stages

Applications

DC-DC Converters

MOSFET Gate Drivers

Use Scenario: Synchronous rectification in non-isolated buck converters delivering 3.3V/5V at 3A.

IC Role / Device Role / Timing Role: Low-side PNP switch replacing Schottky diode to reduce forward drop and improve efficiency.

Use Value: V_CE(SAT) ≤ -50mV at -2A cuts conduction loss by 40% vs. 0.3V diode, raising efficiency from 88% to 92%.

Use Scenario: Level-shifting and current amplification for N-channel MOSFET gate in high-side switch ICs.

IC Role / Device Role / Timing Role: Active pull-down stage that rapidly discharges gate capacitance during turn-off.

Use Value: 370ns t_OFF enables <500ns dead time control, preventing shoot-through in 500kHz half-bridge designs.

Power Switches

Motor Control

Use Scenario: 24V industrial load switch controlling solenoids and relays in PLC output modules.

IC Role / Device Role / Timing Role: Medium-power PNP switch interfacing microcontroller GPIO to inductive loads.

Use Value: BV_CEO = -60V withstands 2× supply voltage flyback spikes, eliminating need for external clamping diodes.

Use Scenario: H-bridge low-side current sensing and commutation in 12V brushed DC motor drivers.

IC Role / Device Role / Timing Role: High-gain, low-saturation switch in current mirror or shunt amplifier feedback paths.

Use Value: h_FE ≥ 120 at -4A ensures accurate 100mV/V gain scaling with minimal base current error.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTP2022A	V_CE(SAT) = -12mV @ -0.1A (lower), but h_FE drops to 80 @ -4A	Better light-load efficiency; reduced gain margin at full load limits base drive headroom	Select when optimizing for standby power, not full-load stability
MJD2955T4G	V_CE(SAT) = -1.1V @ -4A (higher), R_JA = 200°C/W (worse thermal performance)	Higher conduction loss and thermal resistance limit use to <1A continuous applications	Acceptable only where cost dominates and thermal budget allows derating

Compared with ZXTP2012A, ZXTP2022A improves light-load saturation but sacrifices gain linearity at high current, while MJD2955T4G trades significant efficiency and thermal margin for legacy footprint compatibility.

Availability

ZXTP2012A is available at Aetrix Electronics and suitable for DC-DC converters, MOSFET gate drivers, and industrial power switches requiring stable component supply with consistent parametric performance across production batches.

Supply support for ZXTP2012A 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

Zetex Semiconductors (now part of Diodes Incorporated) specialized in high-performance analog and discrete semiconductors, emphasizing low-loss, high-speed, and thermally robust devices for power management.

The ZXTP series targets medium-power bipolar switching applications, designed specifically for efficiency-critical roles in DC-DC conversion, gate driving, and industrial load control where V_CE(SAT) and f_T directly impact system-level thermal and dynamic performance.

FAQ

What is the maximum allowable PCB copper area for optimal thermal performance?

The datasheet specifies R_JA = 125°C/W for a 25mm × 25mm single-sided 1oz copper pad. Increasing copper area beyond this yields diminishing returns; doubling the pad reduces R_JA by ~15%, but thermal vias to internal ground planes provide greater benefit than lateral expansion alone.

Can ZXTP2012A be used in parallel configurations?

Yes-its matched emitter terminals (pins 1 and 4) and low thermal resistance support parallel operation. However, individual base resistors are required per device to ensure current sharing; mismatched h_FE or layout asymmetry can cause imbalance above 2A total load.

Is the E-line (SOT-223) package lead-free compatible?

Yes-the ZXTP2012A is RoHS-compliant and qualified for lead-free reflow (JEDEC J-STD-020D). Peak reflow temperature is 260°C for 30 seconds; the E-line's copper tab maintains mechanical integrity and thermal conductivity under repeated thermal cycling.

Does V_CE(SAT) degrade significantly at elevated temperature?

V_CE(SAT) increases by ~0.1% per °C rise in junction temperature. At T_J = 125°C, measured V_CE(SAT) is ~15% higher than at 25°C-still within -165mV at -4A, preserving low-loss operation in thermally constrained environments.

ZXTP2012A Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: E-Line-3

Packaging:: Bulk

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 3.5 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 210mV @ 400mA, 4A

Current - Collector Cutoff (Max):: 20nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 1A, 1V

Power - Max:: 1 W

Frequency - Transition:: 120MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: E-Line (TO-92 compatible)

ZXTP2012A FAQ

1.How can I place an order for ZXTP2012A through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXTP2012A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ZXTP2012A reliable?

The price and inventory of ZXTP2012A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTP2012A is usually 5 days.

3.What payment methods are accepted for ZXTP2012A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTP2012A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXTP2012A?

ZXTP2012A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXTP2012A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ZXTP2012A?

For technical support, including ZXTP2012A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTP2012A requirements.

6.How does Aetrix verify that ZXTP2012A is sourced from the original manufacturer or authorized distributors?

All ZXTP2012A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZXTP2012A meets industry standards.

7.What is the process for return or replacement of ZXTP2012A?

All ZXTP2012A units undergo pre-shipment inspection (PSI). If there is an issue with ZXTP2012A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ZXTP2012A part is unused and in its original packaging.

Return procedure for ZXTP2012A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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