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Diodes Incorporated ZXTP25040DFHTA
- Part No.:
- ZXTP25040DFHTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZXTP25040DFHTA.pdf
- Description:
- TRANS PNP 40V 3A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:206,024
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Product details
Overview
ZXTP25040DFHTA from Diodes Incorporated is a 40V PNP medium-power transistor in SOT23 package, rated for -3A continuous collector current, -40V collector-emitter blocking voltage, and 1.25W power dissipation. It delivers low saturation voltage (≤ -85mV @ -1A), 55mΩ typical RCE(sat), and supports high-side driver and gate-driving applications in DC-DC converters and motor drives.
For engineers reviewing the ZXTP25040DFHTA datasheet, ZXTP25040DFHTA pinout, ZXTP25040DFHTA application, or ZXTP25040DFHTA equivalent, key selection criteria include verified PNP polarity, SOT23 thermal performance under pulsed load conditions, VCE(sat) stability at IC = -3A/IB = -300mA, and JEDEC-compliant reliability for industrial power control circuits.
Technical Context
This PNP bipolar junction transistor operates with a minimum hFE of 300 at IC = -10mA/VCE = -2V and maintains usable gain down to IC = -3A (hFE ≥ 30). Its safe operating area supports single-pulse currents up to -9A with <100µs width and linear derating from 1.25W at 25°C to zero at 150°C ambient.
Thermal design relies on validated RθJA values: 100°C/W on 50mm × 50mm 2oz copper PCB and 69°C/W for short-duration pulses (<5s). ESD robustness includes 4kV HBM and 400V MM ratings per JESD22-A114/A115, confirming suitability for automated assembly and board-level stress environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -40V - Forward-blocking capability sufficient for 24V and 36V industrial bus systems |
| IC (cont.) | -3A - Supports sustained switching of MOSFET/IGBT gates with >10ns turn-on/320ns turn-off timing |
| VCE(sat) | ≤ -85mV @ -1A/IB = -100mA - Enables <0.1W conduction loss in high-side driver stage |
| PD | 1.25W - Achievable on 50mm × 50mm 2oz copper PCB; requires thermal pad layout per Diodes SOT23 recommendation |
| hFE | 300–900 - Ensures stable base drive scaling across -10mA to -3A load range without external bias compensation |
| fT | 270MHz - Supports fast switching in PWM frequencies up to 10MHz with minimal phase lag |
| RθJA | 100°C/W - Defines maximum allowable ambient temperature rise for 1.25W operation on standard FR4 layout |
Pinout & Package
Package: SOT23 - Molded plastic case with matte tin-plated leads, UL 94V-0 rating, 0.008g mass, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current source terminal; connects to positive rail in high-side configuration |
| 2 (Base) | B | Control input requiring ~300mA peak drive for full saturation at -3A collector current |
| 3 (Collector) | C | Output node tied to load or gate; reverse-biased during off-state to block -40V |
Key Features
| Feature | Design Value |
|---|---|
| Low RCE(sat) | 55mΩ typical - Reduces I²R losses by >40% versus standard PNP transistors at -1A |
| High peak current | -9A pulse rating - Enables short-circuit protection response in motor drive fault handling |
| JEDEC reliability | Qualified per AEC-Q standards for high-reliability industrial use - Validated for -55°C to +150°C operation |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant - Meets IPC-1752A material declaration requirements |
Applications
| MOSFET Gate Driving | DC-DC Converter High-Side Switch |
|---|---|
Use Scenario: Driving N-channel MOSFET gates in synchronous buck converters with 12V–36V input rails. IC Role / Device Role / Timing Role: PNP high-side switch providing active pull-up to VIN during gate turn-on phase. Use Value: -85mV VCE(sat) minimizes gate drive power loss; 300MHz fT ensures sub-100ns edge fidelity. |
Use Scenario: Controlling upper FET in non-isolated boost or SEPIC topologies where bootstrap is impractical. IC Role / Device Role / Timing Role: Medium-power PNP switch delivering regulated 24V output at 2A load. Use Value: 1.25W PD and 100°C/W RθJA enable stable operation without heatsink on 50mm × 50mm PCB. |
| Motor Drive Current Sink | Industrial PLC Output Stage |
Use Scenario: Sinking current from brushed DC motor windings in H-bridge half-bridge configurations. IC Role / Device Role / Timing Role: Low-saturation PNP current sink enabling bidirectional control with minimal voltage drop. Use Value: -260mV max VCE(sat) at -3A ensures ≤0.8W conduction loss per channel at full load. |
Use Scenario: Solid-state replacement for electromechanical relays in programmable logic controller digital outputs. IC Role / Device Role / Timing Role: Industrial-grade discrete switch interfacing microcontroller GPIO to 24V field devices. Use Value: 4kV HBM ESD rating and -55°C to +150°C TJ range ensure long-term reliability in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN25040DFH | Complementary NPN device with identical VCEO, IC, and package; hFE min 200 at -1A | Used in push-pull or complementary pair configurations rather than standalone high-side drive | Select when designing symmetrical driver stages or needing matched thermal characteristics with ZXTP25040DFHTA |
| MMBT2907ALT1G | Lower IC (-600mA), lower VCEO (-60V), higher VCE(sat) (-1.6V @ -500mA); SOT23 package | Suitable only for signal-level or low-current switching, not power gate driving | Choose only for cost-sensitive, low-power bias networks where 3A capability is unnecessary |
Compared with ZXTN25040DFH and MMBT2907ALT1G, ZXTP25040DFHTA uniquely balances 3A current handling, -40V blocking, and sub-100mV saturation in a standard SOT23 footprint-enabling compact, thermally efficient high-side drivers without compromising switching speed or reliability.
Availability
ZXTP25040DFHTA is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and industrial PLC output stages requiring stable component supply, JEDEC-qualified reliability, and RoHS 3 compliance.
Supply support for ZXTP25040DFHTA 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
ZXTP25040DFHTA belongs to Diodes' high-reliability PNP transistor product line, engineered specifically for industrial power control applications demanding robust thermal performance, precise saturation behavior, and automotive-grade process consistency.
FAQ
What is the maximum continuous collector current for ZXTP25040DFHTA?
The ZXTP25040DFHTA is rated for -3A continuous collector current at TA = +25°C with appropriate PCB copper area (50mm × 50mm, 2oz). Derating applies above 25°C ambient: linear reduction to zero at +150°C using 100°C/W RθJA. Peak pulse current reaches -9A for durations ≤100µs.
Does ZXTP25040DFHTA support automotive applications?
ZXTP25040DFHTA itself is not AEC-Q101 qualified; however, Diodes offers a pin-compatible automotive-grade variant (ZXTP25040DFHQA) with PPAP documentation, IATF 16949 manufacturing, and full AEC-Q101 stress testing. Customers requiring automotive qualification must specify the Q-suffix part number.
How does the SOT23 package affect thermal performance?
The SOT23 package achieves 1.25W power dissipation only with optimized PCB layout: 50mm × 50mm 2oz copper area yields RθJA = 100°C/W. On minimal 15mm × 15mm 1oz copper, RθJA rises to 171°C/W, limiting usable power to ~730mW at 25°C ambient-confirming thermal pad design is critical for full-spec operation.
What is the base drive requirement to achieve full saturation at -3A?
To achieve VCE(sat) ≤ -220mV at IC = -3A, the datasheet specifies IB = -300mA. This requires a low-impedance base driver capable of sourcing ≥300mA peak current with <10ns rise time to meet the 75.5ns t(on) specification under VCC = -15V conditions.
ZXTP25040DFHTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 220mV @ 300mA, 3A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 10mA, 2V
- Power - Max:
- 1.25 W
- Frequency - Transition:
- 270MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ZXTP25040DFHTA FAQ
1.How can I place an order for ZXTP25040DFHTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTP25040DFHTA 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 ZXTP25040DFHTA reliable?
The price and inventory of ZXTP25040DFHTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTP25040DFHTA is usually 5 days.
3.What payment methods are accepted for ZXTP25040DFHTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTP25040DFHTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTP25040DFHTA?
ZXTP25040DFHTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTP25040DFHTA 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 ZXTP25040DFHTA?
For technical support, including ZXTP25040DFHTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTP25040DFHTA requirements.
6.How does Aetrix verify that ZXTP25040DFHTA is sourced from the original manufacturer or authorized distributors?
All ZXTP25040DFHTA 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 ZXTP25040DFHTA meets industry standards.
7.What is the process for return or replacement of ZXTP25040DFHTA?
All ZXTP25040DFHTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTP25040DFHTA, 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 ZXTP25040DFHTA part is unused and in its original packaging.
Return procedure for ZXTP25040DFHTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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