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Nexperia USA Inc. PDTA124TT,215
- Part No.:
- PDTA124TT,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTA124TT,215.pdf
- Description:
- TRANS PREBIAS PNP 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,890
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Product details
Overview
PDTA124TT from Nexperia is a PNP resistor-equipped transistor with integrated 22 kΩ base bias resistor (R1), open R2 configuration, −50 V VCEO, −100 mA IO, and SOT23 package - used for compact DC switching in low-power interface circuits such as microcontroller GPIO drivers and LED sink control.
For engineers reviewing the PDTA124TT datasheet, PDTA124TT pinout, PDTA124TT application, or PDTA124TT equivalent, key selection criteria include verified PNP digital transistor functionality, guaranteed R1 tolerance (15.4–28.6 kΩ), SOT23 thermal resistance (500 K/W), and compatibility with reflow-only assembly per JEDEC J-STD-020.
Technical Context
This device integrates a single PNP bipolar junction transistor with a precision laser-trimmed 22 kΩ base-emitter pull-up resistor (R1) and no second resistor (R2 = open), enabling direct logic-level drive without external bias components. It operates as a saturated switch under −0.5 mA base current and −10 mA collector load.
Its electrical behavior is defined by fixed VCE(sat) ≤ −150 mV at IC = −10 mA/IB = −0.5 mA, hFE ≥ 100 at IC = −1 mA/VCE = −5 V, and guaranteed leakage limits: ICE0 ≤ −1 μA at VCE = −30 V and ICBO ≤ −100 nA at VCB = −50 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - maximum safe collector-emitter blocking voltage in open-base configuration |
| IO | −100 mA - continuous DC output current rating, defining maximum switched load capability |
| R1 | 22 kΩ (15.4–28.6 kΩ) - integrated base bias resistor enabling single-resistor drive from 3.3 V/5 V logic |
| VCE(sat) | ≤ −150 mV at IC = −10 mA/IB = −0.5 mA - ensures low conduction loss and minimal self-heating in switching mode |
| hFE | ≥ 100 at IC = −1 mA/VCE = −5 V - guarantees sufficient current gain for reliable saturation with standard logic drive |
| Ptot | 250 mW at Tamb ≤ 25 °C - power dissipation limit dictating PCB copper area and thermal relief requirements |
| Rth(j-a) | 500 K/W - junction-to-ambient thermal resistance in free air, critical for ambient temperature derating |
Pinout & Package
Package: SOT23 (TO-236AB), plastic surface-mounted package with 3 leads; body dimensions 3.0 × 1.4 × 1.1 mm; compatible with standard pick-and-place and reflow soldering (JEDEC J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Internal connection to R1 resistor network | Input node for logic-level control signal; internally tied to 22 kΩ resistor leading to emitter |
| 2 (Collector) | Main current output terminal | Connected to load (e.g., LED anode or relay coil); sinks current when transistor is on |
| 3 (Emitter) | Common reference and R1 return path | Connected to system ground or low-side return; completes bias path for R1 |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 bias resistor | 22 kΩ ±29% - eliminates need for external base resistor, reducing BOM count and layout area |
| Open R2 configuration | No second resistor - simplifies design for basic inverter/driver use without emitter feedback |
| SOT23 footprint | Standard 3-pin surface-mount outline - enables high-density placement and compatibility with automated assembly lines |
| Reflow-only soldering | Qualified per JEDEC J-STD-020 - supports lead-free manufacturing without wave or hand-soldering |
| −65 °C to +150 °C operating range | Rated for extended industrial ambient conditions - suitable for non-automotive embedded systems with wide thermal excursions |
Applications
| Microcontroller GPIO Driver | LED Sink Switch |
|---|---|
Use Scenario: Driving discrete loads from 3.3 V or 5 V MCU I/O pins with limited sourcing capability. IC Role / Device Role / Timing Role: PNP digital transistor acting as low-side switch to sink current from active-high loads. Use Value: Eliminates external base resistor; ensures full saturation at IB = −0.5 mA, reducing firmware timing dependency. |
Use Scenario: Controlling indicator LEDs in portable instrumentation with tight board space constraints. IC Role / Device Role / Timing Role: Constant-current sink switch enabling precise LED brightness control via PWM at emitter. Use Value: VCE(sat) ≤ −150 mV minimizes voltage drop across transistor, preserving forward voltage margin for LED strings. |
| Level-Shifting Inverter | Relay Coil Driver |
Use Scenario: Converting 3.3 V logic signals to −5 V referenced outputs in mixed-voltage analog subsystems. IC Role / Device Role / Timing Role: Active-low inverter stage translating logic states while providing galvanic separation from supply rail. Use Value: Guaranteed hFE ≥ 100 ensures clean transition between logic HIGH/LOW with <100 ns propagation delay. |
Use Scenario: Energizing 5 V/12 V relay coils in industrial PLC I/O modules with isolated control inputs. IC Role / Device Role / Timing Role: High-gain saturated switch delivering up to −100 mA coil current with minimal drive overhead. Use Value: 250 mW power rating and 500 K/W thermal resistance allow continuous operation without heatsinking at 25 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP digital transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124TT | NPN complement with identical R1 = 22 kΩ, same SOT23 package and pinout (1=base, 2=emitter, 3=collector) | Requires high-side or sourcing configuration instead of sinking; not interchangeable without circuit revision | Select PDTC124TT only when load must be connected to VCC rather than ground |
| NSV124TT1T1G | Onsemi PNP digital transistor with R1 = 22 kΩ but tighter R1 tolerance (±10%), higher IO = −200 mA, and lower VCE(sat) = −100 mV | Enables higher current loads and lower power loss but requires validation of thermal performance in same PCB layout | Choose NSV124TT1T1G when upgrading for increased reliability or efficiency in high-duty-cycle applications |
Compared with PDTC124TT, PDTA124TT provides complementary PNP sinking functionality in identical packaging; versus NSV124TT1T1G, it offers cost-optimized performance with wider R1 tolerance and lower current rating - suitable for cost-sensitive, low-duty-cycle interface roles.
Availability
PDTA124TT is available at Aetrix Electronics and suitable for microcontroller interface design, LED driver circuits, and relay control applications requiring stable component supply and long-term production continuity.
Supply support for PDTA124TT 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, acquired from NXP's Standard Products division in 2017, specializing in automotive-qualified and industrial-grade components.
The PDTA124TT belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered for simplified digital switching in space-constrained consumer, computing, and industrial control systems.
FAQ
Is PDTA124TT RoHS compliant and halogen-free?
Yes, PDTA124TT meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The SOT23 package uses lead-free matte tin plating, and all materials comply with Nexperia's Eco Policy and REACH SVHC declarations published on their website.
Can PDTA124TT replace a standard PNP BJT like BC807 in existing designs?
No - PDTA124TT is not a drop-in replacement for discrete BJTs. Its internal 22 kΩ R1 resistor fixes biasing topology; using it in place of BC807 would require removing the external base resistor and verifying saturation under actual load conditions due to different hFE and VCE(sat) behavior.
What is the maximum allowable PCB trace width for thermal relief on the SOT23 pad layout?
For optimal thermal performance, Nexperia recommends minimum 1.0 mm wide copper traces connected to each SOT23 pad, with at least 20 mm² of 35 μm copper pour (preferably on both top and bottom layers) tied to the emitter pad to achieve effective Rth(j-a) ≤ 500 K/W in free air.
Does PDTA124TT support pulse-width modulation (PWM) switching above 10 kHz?
Yes - its typical Cc = 3 pF and fast saturation characteristics support PWM frequencies up to 100 kHz in resistive loads. However, for inductive loads like relays, external flyback diode protection is mandatory, and rise/fall times should be validated against specific load L/R time constants.
PDTA124TT,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:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 22 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTA124TT,215 FAQ
1.How can I place an order for PDTA124TT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA124TT,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 PDTA124TT,215 reliable?
The price and inventory of PDTA124TT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124TT,215 is usually 5 days.
3.What payment methods are accepted for PDTA124TT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124TT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA124TT,215?
PDTA124TT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA124TT,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 PDTA124TT,215?
For technical support, including PDTA124TT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124TT,215 requirements.
6.How does Aetrix verify that PDTA124TT,215 is sourced from the original manufacturer or authorized distributors?
All PDTA124TT,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 PDTA124TT,215 meets industry standards.
7.What is the process for return or replacement of PDTA124TT,215?
All PDTA124TT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124TT,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 PDTA124TT,215 part is unused and in its original packaging.
Return procedure for PDTA124TT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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