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NXP Semiconductors PDTA143TS,126
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- Part No.:
- PDTA143TS,126
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
PDTA143TS,126.pdf
- Description:
- TRANS PREBIAS PNP 50V TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,565
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Product details
Overview
PDTA143TS from Nexperia is a PNP resistor-equipped transistor in TO-92 (SOT54) package, featuring integrated 4.7 kΩ base bias resistor (R1), open R2 configuration, −50 V VCEO rating, −100 mA DC output current, and 500 mW power dissipation at Tamb ≤ 25 °C. It serves as a simplified switching element in low-voltage interface circuits requiring minimal external components.
For engineers reviewing the PDTA143TS datasheet, PDTA143TS pinout, PDTA143TS application, or PDTA143TS equivalent, key selection criteria include its built-in bias network, TO-92 through-hole compatibility, −50 V collector-emitter blocking capability, −100 mA saturation current handling, and thermal resistance of 250 K/W in free air - critical for reliable operation in space-constrained industrial control and consumer logic interfaces.
Technical Context
This device implements a monolithic PNP bipolar junction transistor with a single integrated 4.7 kΩ base-emitter pull-up resistor (R1) and no second resistor (R2 = open), enabling direct digital logic-level drive without external biasing. Its −5 V VEBO rating and −1 μA ICEO at 25 °C support stable cutoff in low-power standby states.
The SOT54 (TO-92) package provides mechanical robustness and through-hole mounting compatibility, with thermal resistance of 250 K/W enabling operation up to 150 °C junction temperature under defined ambient conditions. DC current gain (hFE) ≥ 200 at −1 mA IC ensures predictable switching thresholds across production lots.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Maximum safe collector-emitter voltage before breakdown; enables use in 24 V and 36 V industrial supply rails. |
| IO (DC) | −100 mA: Continuous collector current capability; supports driving LEDs, relays, or small solenoids directly. |
| R1 | 4.7 kΩ ±26% (3.3–6.1 kΩ): Integrated base bias resistor reduces component count and PCB area in simple switch designs. |
| Ptot | 500 mW at Tamb ≤ 25 °C: Power dissipation limit in TO-92 package; requires derating above 25 °C ambient per thermal curve. |
| hFE | ≥200 at VCE = −5 V, IC = −1 mA: Ensures sufficient current amplification for reliable logic-level input drive. |
| VCEsat | ≤ −150 mV at IC = −5 mA, IB = −0.25 mA: Low saturation voltage minimizes power loss and heating during on-state operation. |
Pinout & Package
Package: SOT54 (TO-92), plastic single-ended leaded through-hole package with 3 leads; body dimensions 4.8 × 4.2 × 14.5 mm (D × E × L).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Input terminal connected internally to R1; accepts TTL/CMOS logic-level signals for direct switching control. |
| 2 | Collector | High-side switching node; connects to load supply rail when used in common-emitter configuration. |
| 3 | Emitter | Ground reference terminal; tied to system GND or low-side return path in standard switching layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in R1 bias resistor | Eliminates need for external base resistor, reducing BOM count and layout complexity in discrete switch designs. |
| R2 = open configuration | Provides unidirectional biasing suitable for simple on/off control without emitter feedback or active pull-down. |
| −50 V VCEO rating | Supports operation in 24 V and 36 V industrial systems with margin for transient spikes and inductive kickback. |
| TO-92 mechanical robustness | Enables reliable through-hole assembly and manual rework in prototyping, repair, and low-volume manufacturing. |
Applications
| Industrial Control Input Interface | Consumer Appliance Logic-Level Switch |
|---|---|
Use Scenario: Isolating microcontroller GPIO pins from 24 V PLC input modules using optocoupler driver stages. IC Role / Device Role / Timing Role: PNP switch providing level translation and current gain between 3.3 V logic and 24 V field-side circuitry. Use Value: Built-in 4.7 kΩ R1 eliminates external bias resistor, reducing component count and improving board-level reliability in DIN-rail mounted controllers. | Use Scenario: Driving indicator LEDs and buzzer elements in washing machine control panels. IC Role / Device Role / Timing Role: Low-side or high-side switch controlling LED anode/cathode current paths based on MCU output state. Use Value: −100 mA IO rating and ≤ −150 mV VCEsat ensure bright LED illumination with minimal self-heating and consistent brightness across units. |
| Power Supply Enable Circuit | Legacy TTL-to-Relay Interface |
Use Scenario: Enabling auxiliary 5 V or 12 V rails in multi-output AC/DC adapters via microcontroller command. IC Role / Device Role / Timing Role: High-side enable switch placed between primary regulator output and secondary LDO input. Use Value: −50 V VCEO and 500 mW Ptot allow safe operation with margin during startup surges and load transients in compact adapter designs. | Use Scenario: Interfacing 5 V TTL outputs to 12 V relay coils in HVAC control boards. IC Role / Device Role / Timing Role: General-purpose PNP switch converting logic-high signal into coil energization current path. Use Value: hFE ≥ 200 ensures full saturation with standard TTL output drive strength, eliminating need for Darlington configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC143TS | NPN complement with identical R1 value and SOT54 package; opposite polarity switching behavior. | Requires inverted logic drive and reversed load connection; unsuitable where PNP sourcing action is mandatory. | Select PDTC143TS only when NPN topology aligns with system-level signal polarity and grounding architecture. |
| NSV143TST1G | ON Semiconductor PNP RET with same R1 (4.7 kΩ), but SOT-23 surface-mount package and lower Ptot (250 mW). | Limited to SMT assembly and lower power loads; not compatible with through-hole PCBs or >250 mW continuous dissipation. | Choose NSV143TST1G only for space-constrained SMT designs where TO-92 footprint is unavailable and thermal budget permits. |
Compared with PDTC143TS and NSV143TST1G, the PDTA143TS uniquely combines PNP polarity, TO-92 through-hole mountability, 500 mW power handling, and −50 V blocking in a single cost-optimized discrete solution - making it preferred for legacy-compatible, serviceable, and thermally demanding industrial interfaces.
Availability
PDTA143TS is available at Aetrix Electronics and suitable for industrial control input interfaces, consumer appliance logic-level switches, power supply enable circuits, and legacy TTL-to-relay interfaces requiring stable component supply and long-term obsolescence management.
Supply support for PDTA143TS 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
Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, consumer, and wearable markets with high-volume, high-reliability components.
The PDTA143TS belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered to simplify BJT-based switching designs by integrating precision bias resistors - targeting cost-sensitive, high-yield applications in industrial controls and consumer electronics.
FAQ
What is the pin configuration of the PDTA143TS?
Pin 1 is Base, Pin 2 is Collector, and Pin 3 is Emitter - confirmed in the official Nexperia datasheet for the PDTA143TS. This TO-92 (SOT54) pinout enables direct replacement in legacy PNP switch layouts and supports common-emitter switching topologies without board redesign.
Does the PDTA143TS have an internal pull-down resistor (R2)?
No, the PDTA143TS has R2 = open per its datasheet specification, meaning only R1 (4.7 kΩ) is integrated between base and emitter. This configuration provides unidirectional biasing ideal for simple on/off control without emitter feedback, distinguishing it from dual-resistor RET variants.
What is the maximum power dissipation of the PDTA143TS?
The PDTA143TS has a total power dissipation (Ptot) of 500 mW at Tamb ≤ 25 °C in its SOT54 package. Derating is required above 25 °C ambient per the thermal resistance of 250 K/W, with absolute maximum junction temperature limited to 150 °C.
Can the PDTA143TS replace standard discrete PNP transistors like BC807?
The PDTA143TS can replace BC807 in many switching applications due to matching VCEO (−50 V), IO (−100 mA), and TO-92 packaging - but only when the design accommodates its integrated 4.7 kΩ base resistor. External base resistors must be removed to avoid double-biasing, and hFE ≥ 200 ensures adequate drive margin.
Is the PDTA143TS RoHS compliant and halogen-free?
Yes, the PDTA143TS is RoHS compliant and halogen-free per Nexperia's product compliance documentation. It meets EU Directive 2011/65/EU and IEC 61249-2-21:2013 standards, with material declarations available through Nexperia's official product portal.
PDTA143TS,126 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Transistor Type:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 500 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
PDTA143TS,126 FAQ
1.How can I place an order for PDTA143TS,126 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA143TS,126 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 PDTA143TS,126 reliable?
The price and inventory of PDTA143TS,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA143TS,126 is usually 5 days.
3.What payment methods are accepted for PDTA143TS,126?
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4.How is shipping managed for PDTA143TS,126?
PDTA143TS,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA143TS,126 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 PDTA143TS,126?
For technical support, including PDTA143TS,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA143TS,126 requirements.
6.How does Aetrix verify that PDTA143TS,126 is sourced from the original manufacturer or authorized distributors?
All PDTA143TS,126 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 PDTA143TS,126 meets industry standards.
7.What is the process for return or replacement of PDTA143TS,126?
All PDTA143TS,126 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA143TS,126, 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 PDTA143TS,126 part is unused and in its original packaging.
Return procedure for PDTA143TS,126:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTA143TS,126 Tags
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