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Nexperia USA Inc. PDTA124XU,115
- Part No.:
- PDTA124XU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTA124XU,115.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,508
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Product details
Overview
PDTA124XU from NXP Semiconductors is a PNP resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated bias resistors R1 = 22 kΩ and R2/R1 = 2.1, −50 V VCEO, −100 mA IO, and −150 mV VCEsat at IC = −10 mA/IB = −0.5 mA. It functions as a digital switch for IC input control and low-power load switching in space-constrained PCB designs.
For engineers reviewing the PDTA124XU datasheet, PDTA124XU pinout, PDTA124XU application, or PDTA124XU equivalent, key selection criteria include its built-in resistor network eliminating external bias components, SC-70 footprint compatibility with high-density layouts, guaranteed −100 mA DC output current, and −0.8 V VI(off) ensuring reliable turn-off in logic-level interfacing.
Technical Context
This PNP RET integrates two precision thin-film resistors (R1 = 22 kΩ ±30%, R2/R1 = 2.1 ±21%) directly into the die substrate, enabling single-pin base drive without external biasing. Its internal topology connects R1 between base and input, R2 between base and emitter, forming a voltage-divider feedback path that stabilizes operating point against temperature and process variation.
The device operates as a saturated switch with guaranteed hFE ≥ 80 at IC = −5 mA/VCE = −5 V, and exhibits low thermal resistance (Rth(j-a) = 625 K/W) due to the SOT323 package's optimized copper pad layout. Off-state leakage is tightly controlled: ICEO ≤ −1 µA at VCE = −30 V and IB = 0 A, supporting robust noise immunity in digital signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Maximum safe collector-emitter voltage before breakdown; enables use in 3.3 V, 5 V, and 12 V logic-supplied systems with margin. |
| IO (DC) | −100 mA - Continuous collector current rating; supports driving LEDs, small relays, or logic inputs without external heat sinking. |
| R1 | 22 kΩ (15.4–28.6 kΩ) - Input bias resistor value; sets base current for predictable turn-on threshold with standard CMOS/TTL outputs. |
| VCEsat | −150 mV max at IC = −10 mA/IB = −0.5 mA - Low saturation voltage minimizes power loss and ensures clean logic-low output when switched. |
| VI(off) | −0.8 V typ - Input voltage level guaranteeing device remains fully off; compatible with 0 V–3.3 V logic families without pull-down risk. |
| hFE | ≥80 at VCE = −5 V/IC = −5 mA - Sufficient DC current gain to maintain saturation under worst-case beta degradation over temperature and lifetime. |
| Cc | 3 pF - Collector junction capacitance; enables >100 MHz switching in digital applications with minimal signal delay or ringing. |
Pinout & Package
SOT323 (SC-70) is a 3-lead surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.9 mm, optimized for automated placement and reflow soldering on high-density PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1; accepts logic-level drive directly from MCU GPIO or buffer output without external resistor. |
| 2 | GND (emitter) | Emitter tied to system ground; provides reference node for R2 and defines common return path for switched load current. |
| 3 | output (collector) | Switched high-side output node; sinks current from load (e.g., LED anode or logic input) to ground when active. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors R1/R2 | Eliminates two external SMT resistors, reducing BOM count and PCB area by ~1.5 mm² per instance. |
| −100 mA output current capability | Supports direct drive of medium-current loads (e.g., 20 mA LEDs × 5, small solenoids) without external driver stage. |
| SC-70 (SOT323) package | Enables 0.5 mm pitch routing and fits within 2.2 × 1.35 mm footprint-ideal for wearables, IoT sensors, and compact power management modules. |
| Guaranteed VI(off) ≤ −0.8 V | Ensures full cutoff with 0 V logic drive, preventing unintended conduction in battery-powered systems where leakage must be minimized. |
| Low VCEsat (−150 mV) | Reduces power dissipation to <1.5 mW at 10 mA, critical for thermally constrained enclosures and extended battery life. |
Applications
| LED Driver Circuit | Microcontroller I/O Expander Interface |
|---|---|
Use Scenario: Driving multiple indicator LEDs from a 3.3 V microcontroller with limited GPIO current capability. IC Role / Device Role / Timing Role: PNP switch sinking LED cathode current to ground; operates in DC on/off mode with no timing constraints. Use Value: Built-in R1/R2 eliminates need for discrete base resistors, saving 0.4 mm² PCB area per LED and simplifying firmware-driven brightness control via PWM on collector side. |
Use Scenario: Level-shifting and buffering signals between a 1.8 V FPGA bank and 5 V peripheral bus. IC Role / Device Role / Timing Role: Digital translator providing inverted logic-level interface; operates in static or low-frequency (<1 MHz) switching mode. Use Value: Guaranteed VI(off) ≤ −0.8 V ensures zero leakage when FPGA outputs float or go high-Z, preventing bus contention during configuration sequences. |
| Power Rail Enable Switch | Load-Switch for Sensor Subsystem |
Use Scenario: Enabling/disabling a 3.3 V analog sensor rail using a 3.3 V MCU GPIO pin. IC Role / Device Role / Timing Role: High-side enable switch controlling VCC delivery to downstream circuitry; activated by low GPIO assertion. Use Value: −100 mA rating supports typical sensor rails (e.g., 100 kΩ load at 3.3 V draws ~33 µA), while −150 mV VCEsat adds <0.1% dropout, preserving regulation accuracy. |
Use Scenario: Isolating a humidity sensor module during sleep mode to reduce system quiescent current. IC Role / Device Role / Timing Role: Load disconnect switch placed between main supply and sensor VDD; toggled only at wake/sleep transitions. Use Value: ICEO ≤ −1 µA at VCE = −30 V ensures <1 µA standby leakage, extending battery life in multi-year IoT deployments without compromising wake-up reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP digital switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124XU | NPN complement with identical R1/R2 values, SOT323 package, +50 V VCEO, +100 mA IO. | Requires inverted logic drive (active-high vs. PDTA124XU's active-low); unsuitable where ground-referenced load switching is mandatory. | Select PDTC124XU only when sourcing current from VCC is preferred and control signal polarity can be reversed in firmware. |
| BC857B,115 | Standard PNP BJT (no integrated resistors); requires external R1/R2; same SOT323 package; VCEO = −45 V, hFE = 200–450. | Higher gain but demands precise external bias design; lacks guaranteed VI(off) spec; more sensitive to temperature drift. | Choose BC857B only when variable gain or adjustable switching threshold is required, and additional board area for two 0402 resistors is acceptable. |
Compared with PDTC124XU, PDTA124XU provides native active-low control and ground-return switching; compared with BC857B, it trades higher hFE for reduced component count, tighter VI(off) control, and simplified layout-making it optimal for cost-sensitive, high-volume digital interface applications.
Availability
PDTA124XU is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller I/O expander interfaces, and power rail enable switches requiring stable component supply across industrial, automotive, and consumer electronics production programs.
Supply support for PDTA124XU 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The PDTA124X series belongs to NXP's Resistor-Equipped Transistor (RET) product line, designed specifically to replace discrete BJT + resistor combinations in digital logic interfacing and low-power switching applications.
FAQ
What is the maximum allowable ambient temperature for continuous operation of PDTA124XU?
The PDTA124XU has a specified ambient temperature range of −65 °C to +150 °C, but continuous operation at rated −100 mA IO is limited by thermal dissipation. With Rth(j-a) = 625 K/W and Ptot = 200 mW, sustained operation above +85 °C requires derating; at +100 °C ambient, maximum safe IO drops to approximately −65 mA to maintain Tj ≤ 150 °C.
Can PDTA124XU be used in linear amplifier configurations?
No. The PDTA124XU is characterized and qualified exclusively for switching operation. Its integrated R1/R2 network fixes the base bias point, and parameters like hFE and VCEsat are specified only under saturated-switch conditions. Linear gain, frequency response, and distortion metrics are not characterized, and operation in active region may cause unpredictable thermal behavior or parameter shift.
Is the marking code *44 on PDTA124XU traceable to manufacturing location?
Yes. Per NXP's marking convention in Table 5, the "*44" code corresponds to PDTA124XU units manufactured in Malaysia. This traceability is maintained through NXP's 12NC ordering code structure and applies to all units shipped with that marking, enabling consistent lot-level quality tracking and failure analysis.
Does PDTA124XU support lead-free reflow soldering profiles?
Yes. The device is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C for ≤ 30 seconds. NXP specifies reflow soldering as the only recommended method (Section 5, Note [2]), and the SOT323 package meets IPC/JEDEC standards for moisture sensitivity level (MSL) 1, eliminating bake requirements prior to assembly.
PDTA124XU,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):
- 22 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTA124XU,115 FAQ
1.How can I place an order for PDTA124XU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA124XU,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 PDTA124XU,115 reliable?
The price and inventory of PDTA124XU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124XU,115 is usually 5 days.
3.What payment methods are accepted for PDTA124XU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124XU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA124XU,115?
PDTA124XU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA124XU,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 PDTA124XU,115?
For technical support, including PDTA124XU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124XU,115 requirements.
6.How does Aetrix verify that PDTA124XU,115 is sourced from the original manufacturer or authorized distributors?
All PDTA124XU,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 PDTA124XU,115 meets industry standards.
7.What is the process for return or replacement of PDTA124XU,115?
All PDTA124XU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124XU,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 PDTA124XU,115 part is unused and in its original packaging.
Return procedure for PDTA124XU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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