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Diodes Incorporated ZXTP2012ZTA
- Part No.:
- ZXTP2012ZTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
ZXTP2012ZTA.pdf
- Description:
- TRANS PNP 60V 4.3A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,608
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Product details
Overview
ZXTP2012ZTA from Diodes Incorporated is a 60V PNP low-saturation bipolar junction transistor in SOT89 package, rated for -4.3A continuous collector current, with VCE(sat) < -65mV at -1A and RSAT = 32mΩ, deployed as a high-current power switch in motor drive and MOSFET/IGBT gate-driving circuits.
For engineers reviewing the ZXTP2012ZTA datasheet, ZXTP2012ZTA pinout, ZXTP2012ZTA application, or ZXTP2012ZTA equivalent, key selection criteria include guaranteed hFE ≥ 100 at -10A, -100V VCBO, thermal resistance RθJL = 3.23°C/W, and automotive-qualified variant (ZXTP2012ZQ) availability.
Technical Context
This PNP transistor operates in linear and switching modes with specified hFE up to -10A and fT = 120MHz, enabling fast turn-on/turn-off (ton = 39ns, toff = 370ns) under pulsed conditions (≤300μs, ≤2% duty cycle). Its low RSAT and sub-100mV saturation voltage support efficient high-current conduction with minimal power loss.
The device features three-terminal SOT89 configuration with exposed collector pad for enhanced thermal dissipation (RθJC = 21°C/W, RθJL = 3.23°C/W), and is characterized across -55°C to +150°C operating range with guaranteed breakdown ratings: VCEO = -60V, VEBO = -7V, and VCBO = -100V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -60V - Maximum safe collector-emitter voltage before avalanche breakdown in common-emitter configuration. |
| IC (cont) | -4.3A - Continuous DC collector current capability without thermal derating on standard 25mm² PCB. |
| VCE(sat) | < -65mV @ -1A - Ensures < 65mW conduction loss per transistor at 1A load current. |
| hFE | 100–300 @ -10A - High, stable current gain maintained at full rated current for robust base drive design. |
| fT | 120MHz - Supports high-speed switching applications including gate driving of power semiconductors. |
| RθJL | 3.23°C/W - Low junction-to-lead thermal resistance enables direct heat transfer to PCB copper via exposed collector pad. |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector tab for thermal management; dimensions per JEDEC MO-203AA (D1 = 1.733mm, E = 2.50mm, H = 4.10mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | Emitter terminal | Current exit path; connected to load return or ground reference in high-side switch configurations. |
| Pin 2 (Collector) | Collector terminal | Exposed metal pad - primary heat dissipation path and high-current input node; must be soldered to large copper area. |
| Pin 3 (Base) | Base control terminal | Low-impedance input for current-driven switching; requires ~100mA base drive for full -2A conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low saturation resistance | RSAT = 32mΩ - Reduces I²R conduction loss in high-current switching paths such as fan drivers and backlight inverters. |
| High current gain at full load | hFE ≥ 100 @ -10A - Enables simplified base drive circuitry without active current boosting stages. |
| Fast switching performance | ton = 39ns, toff = 370ns - Supports PWM frequencies >100kHz in gate-driving and power-switching applications. |
| Robust thermal design | RθJL = 3.23°C/W - Allows direct thermal coupling to PCB copper, eliminating need for external heatsinks below 1.5W dissipation. |
Applications
| Emergency Lighting Control | DC Fan Motor Driver |
|---|---|
Use Scenario: Constant-current switching for LED strings during mains failure, requiring reliable turn-on under wide temperature and battery-voltage ranges. IC Role / Device Role / Timing Role: High-side PNP switch controlling LED cathode current path with low VCE(sat) to maximize battery runtime. Use Value: Sub-65mV saturation voltage preserves >95% of available battery voltage across the switch at 1A load. |
Use Scenario: PWM-controlled 12V/24V brushless DC fan with reverse-polarity protection and stall-current handling up to 4A. IC Role / Device Role / Timing Role: Main power-stage switch in half-bridge high-side leg, driven by complementary NPN (ZXTN2010Z) logic. Use Value: Guaranteed hFE ≥ 100 at -5A ensures stable base current delivery without thermal runaway during startup surge. |
| Backlight Inverter Primary Switch | MOSFET/IGBT Gate Driver |
Use Scenario: High-frequency (50–200kHz) resonant switching in CCFL or LED backlight inverters for industrial displays. IC Role / Device Role / Timing Role: Fast-switching PNP transistor in push-pull or Royer oscillator topology, handling repetitive 5A peak currents. Use Value: 120MHz fT and 39ns ton enable clean square-wave generation with minimal rise/fall time distortion. |
Use Scenario: Level-shifting and current-boosting stage for driving high-capacitance power device gates in motor controllers and SMPS. IC Role / Device Role / Timing Role: Active pull-down element in totem-pole gate driver, sinking >2A transient gate current during turn-off. Use Value: -15A ICM peak rating and -100V VCBO withstand capability prevent latch-up during Miller-induced voltage spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTP2022ZTA | VCEO = -40V, IC = -3A, VCE(sat) = -100mV @ -1A | Limited to lower-voltage (<40V) systems; higher saturation loss reduces efficiency in high-current loads. | Select when cost sensitivity outweighs voltage headroom and thermal performance requirements. |
| MJD2955T4G | TO-220 package, VCEO = -60V, IC = -10A, RθJA = 100°C/W (no exposed pad) | Requires external heatsink; unsuitable for space-constrained SMT designs but offers higher current margin. | Choose for legacy through-hole compatibility or where >4.3A continuous current is mandatory. |
Compared with ZXTP2012ZTA, ZXTP2022ZTA trades voltage rating and thermal efficiency for lower cost, while MJD2955T4G provides higher current capacity at the expense of board area and thermal management complexity.
Availability
ZXTP2012ZTA is available at Aetrix Electronics and suitable for emergency lighting circuits, DC fan motor drivers, and MOSFET/IGBT gate-driving applications requiring stable component supply, RoHS-compliant packaging, and automotive-grade reliability assurance.
Supply support for ZXTP2012ZTA 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.
ZXTP2012ZTA belongs to Diodes' low-saturation PNP transistor family, engineered for high-efficiency power switching in thermally constrained surface-mount applications where low VCE(sat) and robust hFE at full current are critical.
FAQ
What is the maximum allowable continuous collector current for ZXTP2012ZTA at 85°C ambient?
At TA = 85°C, the maximum continuous collector current is derated from -4.3A to approximately -2.7A using the 12 mW/°C linear derating factor from the 1.5W power dissipation rating (Note 6). This assumes mounting on a 25mm × 25mm 1oz copper PCB in still air, with junction temperature limited to 150°C.
Is ZXTP2012ZTA pin-compatible with its complementary NPN counterpart ZXTN2010Z?
No - ZXTP2012ZTA (SOT89, Pinout: E-C-B) and ZXTN2010Z (SOT89, Pinout: C-E-B) have reversed emitter-collector pin assignments. Their top-view markings and internal die orientation differ; PCB layout must be mirrored to maintain functional equivalence in complementary pair designs.
Does ZXTP2012ZTA require a base resistor when driven by a 3.3V microcontroller GPIO?
Yes - with VBE(sat) ≈ -950mV and required IB ≈ -100mA for -1A IC, a 3.3V GPIO cannot directly source sufficient base current. A level-shifting driver stage or Darlington configuration is needed; typical design uses a 10kΩ pull-up to 12V with NPN pre-driver to achieve proper base bias.
Can ZXTP2012ZTA be used in automotive applications?
Yes - the automotive-qualified variant ZXTP2012ZQ is AEC-Q101 qualified and shares identical electrical specifications. ZXTP2012ZTA itself is not AEC-Q101 certified but is manufactured on the same process and used in non-safety-critical automotive subsystems where qualification is not mandated.
ZXTP2012ZTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 4.3 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 215mV @ 500mA, 5A
- Current - Collector Cutoff (Max):
- 20nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 2A, 1V
- Power - Max:
- 2.1 W
- Frequency - Transition:
- 120MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
ZXTP2012ZTA FAQ
1.How can I place an order for ZXTP2012ZTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTP2012ZTA 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 ZXTP2012ZTA reliable?
The price and inventory of ZXTP2012ZTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTP2012ZTA is usually 5 days.
3.What payment methods are accepted for ZXTP2012ZTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTP2012ZTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTP2012ZTA?
ZXTP2012ZTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTP2012ZTA 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 ZXTP2012ZTA?
For technical support, including ZXTP2012ZTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTP2012ZTA requirements.
6.How does Aetrix verify that ZXTP2012ZTA is sourced from the original manufacturer or authorized distributors?
All ZXTP2012ZTA 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 ZXTP2012ZTA meets industry standards.
7.What is the process for return or replacement of ZXTP2012ZTA?
All ZXTP2012ZTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTP2012ZTA, 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 ZXTP2012ZTA part is unused and in its original packaging.
Return procedure for ZXTP2012ZTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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