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Nexperia USA Inc. PDTA143TU,115
- Part No.:
- PDTA143TU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTA143TU,115.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:1,128
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Product details
Overview
PDTA143TU,115 from Nexperia is a PNP resistor-equipped transistor with integrated 4.7 kΩ base bias resistor (R1), open R2 configuration, −50 V VCEO, −100 mA IO, and SOT323 (SC-70) package. It functions as a single-transistor switch in low-power digital interface circuits, eliminating external bias components for level translation between microcontrollers and peripheral loads.
For engineers reviewing the PDTA143TU,115 datasheet, PDTA143TU,115 pinout, PDTA143TU,115 application, or PDTA143TU,115 equivalent, key selection criteria include guaranteed hFE ≥200 at −1 mA IC, VCEsat ≤ −150 mV at −5 mA IC/−0.25 mA IB, thermal resistance of 625 K/W, and compatibility with reflow-only soldering per JEDEC J-STD-020.
Technical Context
This device integrates a PNP bipolar junction transistor with a monolithic 4.7 kΩ pull-up base resistor (R1) and no second resistor (R2 = open), enabling direct logic-level drive without external bias networks. Its fixed bias topology supports deterministic turn-on/turn-off behavior in unidirectional switching applications.
Designed for surface-mount use in space-constrained PCBs, it operates across −65 °C to +150 °C ambient, with absolute maximum ratings including −50 V VCBO/VCEO, −5 V VEBO, and 200 mW Ptot at Tamb = 25 °C - all validated under standard mounting conditions on FR4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Maximum safe collector-emitter voltage before breakdown in open-base configuration. |
| IO | −100 mA: Continuous DC output current capability without thermal runaway under rated conditions. |
| R1 | 4.7 kΩ ±28% (3.3–6.1 kΩ): Integrated base bias resistor enabling direct TTL/CMOS drive with predictable IB. |
| hFE | ≥200 at VCE = −5 V, IC = −1 mA: Minimum DC current gain ensuring reliable saturation with low base drive. |
| VCEsat | ≤ −150 mV at IC = −5 mA, IB = −0.25 mA: Low saturation voltage minimizes power loss in switching mode. |
| Rth j-a | 625 K/W: Junction-to-ambient thermal resistance in free air, defining derating curve for SOT323 layout. |
Pinout & Package
Package: SOT323 (SC-70), plastic surface-mounted package with 3 leads; dimensions 2.2 × 1.35 × 1.15 mm (L × W × H); lead pitch 1.9 mm; RoHS-compliant, reflow-soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input node connected to internal R1 | Accepts logic-level input; R1 pulls base toward emitter for controlled PNP turn-on. |
| 2 (Emitter) | Common reference terminal | Connected to higher potential rail (e.g., VCC); source of switched current. |
| 3 (Collector) | Output node | Delivers switched current to load; sinks current when transistor is saturated. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistor R1 | 4.7 kΩ monolithic resistor eliminates need for external base pull-up, reducing BOM count by one component. |
| Guaranteed hFE ≥200 | Ensures consistent saturation with minimal base drive current, simplifying drive circuit design for 3.3 V/5 V logic. |
| VCEsat ≤ −150 mV | Minimizes conduction loss in high-duty-cycle switching, critical for battery-powered sensor interface stages. |
| SOT323 footprint | 1.35 mm width enables dense routing in portable electronics; compatible with standard 0.65 mm pitch pick-and-place equipment. |
Applications
| Microcontroller GPIO Interface | LED Driver Stage |
|---|---|
|
Use Scenario: Driving discrete LEDs from 3.3 V MCU outputs with current limiting via external series resistor. IC Role / Device Role: Low-side switch that inverts logic signal and provides current gain to overcome LED forward voltage drop. Use Value: Eliminates need for separate base resistor, reducing PCB area and assembly cost in multi-LED indicator arrays. |
Use Scenario: Controlling status LEDs in industrial HMIs where EMI immunity and consistent brightness are required. IC Role / Device Role: Constant-current sink stage with predictable VCEsat enabling stable LED current despite supply variation. Use Value: Fixed R1 ensures repeatable turn-on threshold across temperature, improving visual consistency in field-deployed units. |
| Level Translation Circuit | Power Rail Enable Switch |
|
Use Scenario: Converting 1.8 V logic signals to control 5 V peripherals in mixed-voltage systems. IC Role / Device Role: Active-low level shifter using emitter-follower configuration with defined VBE drop. Use Value: Integrated R1 guarantees sufficient base current even at lowest valid logic-high voltage (1.8 V), preventing marginal turn-on. |
Use Scenario: Enabling/disabling auxiliary 3.3 V power rails in IoT edge nodes based on system sleep state. IC Role / Device Role: High-side enable switch controlling PMOS gate drive via inverted logic signal. Use Value: −50 V VCEO rating provides margin against transient overshoot during rail sequencing, enhancing system robustness. |
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 |
|---|---|---|---|
| PDTC143TU,115 | NPN complement with identical R1 = 4.7 kΩ, same SOT323 package, but opposite polarity and drive logic. | Requires active-high control instead of active-low; unsuitable for high-side switching with positive rails. | Select when interfacing with NPN-compatible logic families or when sourcing current is preferred over sinking. |
| EMH11T2R | PNP RET with R1 = 10 kΩ, R2 = 10 kΩ (dual-resistor), higher VCEO = −60 V, SOT-323 package. | Supports voltage divider bias for improved noise immunity; higher R1 reduces base current consumption. | Choose for enhanced ESD tolerance in noisy environments or when lower standby current is critical. |
Compared with PDTC143TU,115 and EMH11T2R, PDTA143TU,115 offers optimal balance of low VCEsat, guaranteed hFE, and minimal external component dependency for cost-sensitive, space-constrained active-low switching.
Availability
PDTA143TU,115 is available at Aetrix Electronics and suitable for microcontroller interface circuits, LED driver stages, and level translation applications requiring stable component supply and long-term production continuity.
Supply support for PDTA143TU,115 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 high-volume production of discrete semiconductors, specializing in automotive-grade and industrial reliability standards for logic, MOSFETs, and resistor-equipped transistors.
The PDTA143TU,115 belongs to the PDTA143T series of PNP resistor-equipped transistors, engineered for simplified digital interface design in consumer, computing, and wearable electronics where board space and BOM reduction are critical.
FAQ
What is the maximum allowable continuous collector current for PDTA143TU,115?
The absolute maximum continuous collector current (IO) is −100 mA at Tamb ≤ 25 °C with standard PCB mounting. Derating is required above 25 °C ambient per the 625 K/W thermal resistance; at 70 °C ambient, maximum usable IO drops to approximately −70 mA to maintain Tj ≤ 150 °C.
Can PDTA143TU,115 be used in place of a standard PNP transistor like BC807?
No - PDTA143TU,115 integrates a 4.7 kΩ base resistor and has no external base connection; it cannot replace discrete PNP transistors requiring external bias networks. Its pinout (base-input, emitter-high, collector-output) and fixed bias topology make it functionally distinct from BC807, which requires two external resistors for switching operation.
Is reflow soldering mandatory for PDTA143TU,115?
Yes - the datasheet explicitly states "reflow soldering is the only recommended soldering method" due to thermal sensitivity of the SOT323 package and internal resistor structure. Wave or hand soldering risks exceeding junction temperature limits and degrading R1 tolerance or hFE performance.
What does the "U" suffix indicate in PDTA143TU,115?
The "U" denotes the SOT323 (SC-70) package variant within the PDTA143T series, as confirmed in the product overview table. It distinguishes this version from other packages like "TS" (TO-92), "TK" (SOT346), or "TM" (SOT883), each with different thermal and mechanical characteristics.
PDTA143TU,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTA143TU,115 FAQ
1.How can I place an order for PDTA143TU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA143TU,115 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 PDTA143TU,115 reliable?
The price and inventory of PDTA143TU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA143TU,115 is usually 5 days.
3.What payment methods are accepted for PDTA143TU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA143TU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA143TU,115?
PDTA143TU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA143TU,115 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 PDTA143TU,115?
For technical support, including PDTA143TU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA143TU,115 requirements.
6.How does Aetrix verify that PDTA143TU,115 is sourced from the original manufacturer or authorized distributors?
All PDTA143TU,115 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 PDTA143TU,115 meets industry standards.
7.What is the process for return or replacement of PDTA143TU,115?
All PDTA143TU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA143TU,115, 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 PDTA143TU,115 part is unused and in its original packaging.
Return procedure for PDTA143TU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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