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Nexperia USA Inc. PDTC143TT,215
- Part No.:
- PDTC143TT,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC143TT,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,771
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Product details
Overview
PDTC143TT from Nexperia is an NPN resistor-equipped transistor with integrated 4.7 kΩ base bias resistor (R1), open R2 configuration, 50 V VCEO, 100 mA IO, and SOT23 package - used for compact DC switching in microcontroller I/O interface circuits.
For engineers reviewing the PDTC143TT datasheet, PDTC143TT pinout, PDTC143TT application, or PDTC143TT equivalent, key selection criteria include built-in biasing, thermal resistance (500 K/W), collector-emitter saturation voltage (≤100 mV at 5 mA/0.25 mA), and compatibility with reflow-only assembly.
Technical Context
This device integrates a single NPN bipolar junction transistor with a monolithic 4.7 kΩ pull-up base resistor (R1) and no second resistor (R2 = open), eliminating external bias components. It operates as a digital switch with guaranteed hFE ≥200 at IC = 1 mA and VCE = 5 V.
Designed for low-power logic-level interfacing, it supports DC output current up to 100 mA with VCE(sat) ≤100 mV under 5 mA collector load and 0.25 mA base drive, and exhibits low leakage (ICEO ≤1 μA at VCE = 30 V).
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 derating at Tamb ≤25 °C |
| R1 | 4.7 kΩ - Integrated base bias resistor enabling direct GPIO-level drive without external components |
| VCE(sat) | ≤100 mV at IC = 5 mA, IB = 0.25 mA - Ensures minimal conduction loss and compatible with 3.3 V/5 V logic thresholds |
| Ptot | 250 mW at Tamb ≤25 °C - Power dissipation limit defining maximum steady-state switching duty in SOT23 package |
| hFE | ≥200 at VCE = 5 V, IC = 1 mA - Guarantees sufficient current gain for reliable saturation with low base drive |
| Rth(j-a) | 500 K/W - Junction-to-ambient thermal resistance in free air, critical for ambient temperature derating |
Pinout & Package
PDTC143TT is housed in a plastic surface-mounted SOT23 package (TO-236AB), measuring 2.9 × 1.3 × 1.0 mm, optimized for high-density PCB layouts and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input node connected internally to R1 | Accepts logic-level drive; internal 4.7 kΩ resistor pulls base toward VCC when un-driven |
| 2 (Emitter) | Common reference terminal | Connected directly to ground or low-side return path; no internal connection to resistors |
| 3 (Collector) | Switched output terminal | Drives load between VCC and collector; sinks current when base is high |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 4.7 kΩ base bias resistor | Eliminates need for external pull-up resistor, reducing BOM count and layout area by one passive component |
| Guaranteed hFE ≥200 | Ensures robust saturation with standard MCU GPIO drive strength (e.g., 0.25 mA base current) |
| VCE(sat) ≤100 mV | Minimizes power loss and voltage drop in load-switching applications, preserving signal integrity |
| Reflow-only assembly compatibility | Validated for lead-free reflow profiles only - avoids mechanical stress and solder joint reliability issues |
| Low ICEO (≤1 μA) | Enables stable off-state performance in battery-powered systems where standby leakage must be minimized |
Applications
| Microcontroller I/O Interface | LED Driver Circuit |
|---|---|
Use Scenario: Driving discrete LEDs from 3.3 V or 5 V MCU GPIO pins with limited sink/source current capability. IC Role / Device Role: Low-side switch that sinks LED current through emitter-to-ground path. Use Value: Built-in R1 enables direct GPIO connection without external biasing; VCE(sat) ≤100 mV ensures >95% of supply voltage reaches LED anode. |
Use Scenario: Controlling indicator or status LEDs in space-constrained consumer electronics. IC Role / Device Role: Single-transistor load switch replacing discrete BJT + resistor pair. Use Value: SOT23 footprint saves >40% board area vs. TO-92; 100 mA rating supports multi-LED strings at 20 mA each. |
| Logic-Level Signal Inverter | Power Rail Enable Switch |
Use Scenario: Converting active-high control signals to active-low outputs for legacy peripherals. IC Role / Device Role: Digital inverter stage using common-emitter configuration with grounded emitter. Use Value: Guaranteed hFE ≥200 ensures full logic swing at output; fast turn-on/off supports 1 MHz+ toggle rates. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias, RF module VCC) in portable devices. IC Role / Device Role: High-side or low-side enable switch controlled by PMIC or system controller. Use Value: 50 V VCEO headroom accommodates 3.3 V–24 V rail voltages; 100 mA rating covers typical sensor subsystem loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124ET,215 | R1 = 22 kΩ (higher), R2 = 47 kΩ (not open); lower IO (50 mA) | Optimized for higher-impedance logic inputs; reduced drive strength limits load current | Select when lower base current draw is required and load current ≤50 mA |
| MMBT3904LT1G | No integrated resistors; requires external RB; higher VCEO (40 V), same IO (200 mA) | Greater flexibility in bias design but increases component count and layout complexity | Select when precise bias tuning or higher current switching (>100 mA) is needed |
Compared with PDTC124ET,215, PDTC143TT delivers higher drive current and lower VCE(sat) due to its lower R1; versus MMBT3904LT1G, it trades design flexibility for BOM reduction and guaranteed saturation with standard GPIOs.
Availability
PDTC143TT is available at Aetrix Electronics and suitable for microcontroller interface circuits, LED driver modules, logic-level inverters, and power rail enable switches requiring stable component supply across industrial and consumer production programs.
Supply support for PDTC143TT 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, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, computing, and consumer markets.
PDTC143TT belongs to the PDTC143T series of resistor-equipped transistors, designed specifically to simplify low-voltage DC switching in space-constrained, high-volume applications such as portable electronics and IoT edge nodes.
FAQ
Is PDTC143TT suitable for 1.8 V logic-level drive?
No - PDTC143TT requires minimum ~0.7 V base-emitter forward bias to turn on, and its guaranteed hFE and VCE(sat) are specified at IC = 1–5 mA with VCE = 5 V. At 1.8 V supply, insufficient base current flows through the 4.7 kΩ resistor to achieve full saturation; use a logic-level MOSFET or lower-R1 RET for sub-2.5 V operation.
Can PDTC143TT replace a standard BJT like BC847 in existing designs?
Only with schematic modification: PDTC143TT has internal R1 connected between base and collector, so it cannot replicate the three-terminal flexibility of BC847. Direct replacement requires removing the external base resistor and verifying that the new bias network (R1 + transistor) meets required IB/IC ratio and switching speed.
What is the maximum operating frequency for switching applications?
PDTC143TT is characterized for DC and low-frequency switching only; its Cc = 2.5 pF and unspecified fT indicate suitability up to ~100 kHz. For >1 MHz operation, consult Nexperia's application note AN10272 on resistor-equipped transistor AC performance or select a dedicated RF/switching transistor.
Does PDTC143TT support lead-free rework with hot air?
No - the datasheet explicitly states "reflow soldering is the only recommended soldering method." Hot-air rework risks delamination, die damage, or solder wicking due to the SOT23 package's thermal mass and construction; use precision reflow profiling instead.
PDTC143TT,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN - 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:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC143TT,215 FAQ
1.How can I place an order for PDTC143TT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143TT,215 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 PDTC143TT,215 reliable?
The price and inventory of PDTC143TT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143TT,215 is usually 5 days.
3.What payment methods are accepted for PDTC143TT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143TT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143TT,215?
PDTC143TT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143TT,215 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 PDTC143TT,215?
For technical support, including PDTC143TT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143TT,215 requirements.
6.How does Aetrix verify that PDTC143TT,215 is sourced from the original manufacturer or authorized distributors?
All PDTC143TT,215 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 PDTC143TT,215 meets industry standards.
7.What is the process for return or replacement of PDTC143TT,215?
All PDTC143TT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143TT,215, 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 PDTC143TT,215 part is unused and in its original packaging.
Return procedure for PDTC143TT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143TT,215 Tags
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