Nexperia USA Inc. PDTC124XM,315
- Part No.:
- PDTC124XM,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
PDTC124XM,315.pdf
- Description:
- TRANS PREBIAS
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Product details
Overview
PDTC124XM from NXP Semiconductors is an NPN resistor-equipped transistor (RET) with integrated bias resistors R1 = 22 kΩ and R2 = 47 kΩ, designed for general-purpose switching in space-constrained PCB layouts. It delivers 100 mA output current, 50 V collector-emitter voltage rating, and operates in ambient temperatures from −65 °C to +150 °C, commonly used in LED driver stages and logic-level interface circuits.
For engineers reviewing the PDTC124XM datasheet, PDTC124XM pinout, PDTC124XM application, or PDTC124XM equivalent, key selection criteria include its SOT883 ultra-small package (1.0 × 0.6 × 0.5 mm), built-in resistor ratio (R2/R1 = 2.1 typ), VI(on) = 1.1 V at IC = 2 mA, and thermal resistance Rth(j-a) = 500 K/W - critical for high-density consumer and industrial control designs.
Technical Context
This RET integrates two precision bias resistors directly into the NPN transistor die, eliminating external base resistors and reducing component count in digital switching paths. Its fixed R1–R2 network enables direct TTL/CMOS logic-level drive without level-shifting circuitry.
The device uses a standard NPN silicon epitaxial planar structure with emitter-base and collector-base junctions rated for 7 V and 50 V respectively, and supports reflow soldering only per JEDEC J-STD-020 compliance. Its 150 °C maximum junction temperature and 250 mW power dissipation at Tamb ≤ 25 °C suit thermally demanding embedded signal conditioning nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum safe collector-emitter voltage under open-base conditions, enabling use in 24 V industrial I/O circuits. |
| IO | 100 mA - continuous DC output current capability, sufficient for driving small relays or multiple LEDs in parallel. |
| R1 | 22 kΩ (typ) - input bias resistor value, sets base current for predictable turn-on with 3.3 V or 5 V logic sources. |
| R2/R1 | 2.1 (typ) - internal resistor ratio defining feedback path for stable saturation and reduced sensitivity to hFE variation. |
| VI(on) | 1.1 V (typ) at IC = 2 mA - minimum input voltage required to achieve defined on-state, compatible with low-voltage microcontroller GPIOs. |
| VCEsat | 150 mV (max) at IC = 10 mA / IB = 0.5 mA - low saturation voltage minimizes power loss and self-heating in switching applications. |
| Ptot | 250 mW - total power dissipation limit at 25 °C ambient, requiring thermal derating above 25 °C per 500 K/W junction-to-ambient resistance. |
Pinout & Package
SOT883 (SC-101) is a leadless ultra-small plastic package measuring 1.0 × 0.6 × 0.5 mm with three solder lands; optimized for high-density automated assembly and minimal PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | input (base) | Connected internally to R1; accepts logic-level drive signal and routes current through R1–R2 network to bias the NPN transistor. |
| 2 | GND (emitter) | Emitter terminal tied to system ground reference; serves as common return path for load current and bias network. |
| 3 | output (collector) | Switched output node; sinks load current when transistor is saturated, supporting active-low switching topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates need for two external SMT resistors, reducing BOM count and placement cost in high-volume consumer electronics. |
| Ultra-small SOT883 package | 1.0 × 0.6 mm footprint saves >60% board area vs. SOT23, enabling use in wearables and compact IoT sensor nodes. |
| Low VI(on) | 1.1 V typical ensures reliable turn-on from 1.8 V and 3.3 V MCU outputs without additional level translation. |
| Stable R2/R1 ratio | 2.1 typ provides consistent current gain compensation across process and temperature, improving batch-to-batch consistency. |
| Reflow-only soldering | Complies with JEDEC J-STD-020 moisture sensitivity level 1, allowing single-pass reflow without prebake for streamlined manufacturing. |
Applications
| LED Driver Stage | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving 20 mA white LEDs from a 3.3 V MCU output in a battery-powered smart sensor module. IC Role / Device Role / Timing Role: NPN switch controlling LED anode current path; operates in saturation mode with <150 mV drop. Use Value: Built-in R1/R2 eliminates two 0402 resistors, reducing layout complexity and improving reliability in vibration-prone environments. |
Use Scenario: Level-shifting and current amplification between a 1.8 V ARM Cortex-M0+ GPIO and a 5 V optocoupler input. IC Role / Device Role / Timing Role: Logic-level translator and current buffer; turns on fully at VI(on) = 1.1 V, ensuring fast edge response. Use Value: Eliminates discrete transistor + dual-resistor stage, cutting signal propagation delay by ~1.2 ns and reducing parasitic capacitance. |
| Industrial Digital Input Conditioning | Low-Power Inverter Circuit |
Use Scenario: Converting 24 V PLC field signals to 3.3 V logic levels for an isolated microcontroller input. IC Role / Device Role / Timing Role: High-side switch with emitter-follower configuration; handles 24 V transients via 50 V VCEO rating. Use Value: Integrated R1 limits base current to safe levels during ESD events, reducing need for external TVS diodes on input lines. |
Use Scenario: Constructing a push-pull inverter stage in a low-noise analog front-end power sequencer. IC Role / Device Role / Timing Role: Active pull-down element complementing a PNP RET; achieves rail-to-rail swing with <200 mV residual voltage. Use Value: Matched R2/R1 ratio ensures consistent turn-off timing across temperature, minimizing shoot-through risk in dual-RET inverters. |
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 |
|---|---|---|---|
| PDTC124XK | SOT346 (SC-59A) package; larger 2.2 × 1.35 × 0.95 mm body; Rth(j-a) = 500 K/W same, but higher Ptot = 250 mW at same ambient. | Preferred where manual rework or wave soldering is required; not suitable for ultra-dense layouts. | Select when board assembly includes mixed SMT/thru-hole processes or thermal mass requirements exceed SOT883 capability. |
| PDTC124XU | SOT323 (SC-70) package; 2.1 × 1.25 × 0.9 mm; 200 mW Ptot; R1/R2 values identical; VI(on) = 1.1 V same. | Offers easier optical inspection and slightly better thermal performance than SOT883 in moderate-power applications. | Choose when visual solder joint verification is mandatory or when operating near 100 mA continuously with limited airflow. |
Compared with PDTC124XM, PDTC124XK offers greater mechanical robustness and compatibility with legacy pick-and-place tooling, while PDTC124XU provides superior manufacturability for mid-volume production where SOT883's size advantage is unnecessary.
Availability
PDTC124XM is available at Aetrix Electronics and suitable for LED driver stages, microcontroller GPIO interfaces, industrial digital input conditioning, and low-power inverter circuits requiring stable component supply and long-term lifecycle support.
Supply support for PDTC124XM 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.
PDTC124XM belongs to NXP's Resistor-Equipped Transistor (RET) product line, engineered to simplify digital switching design by integrating precision bias networks into miniature surface-mount packages for high-reliability embedded control systems.
FAQ
Is PDTC124XM compatible with lead-free reflow soldering profiles?
Yes. PDTC124XM is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature tolerance up to 260 °C and moisture sensitivity level 1. It requires no prebake and supports standard industry reflow profiles including IPC-7525B ramp-soak-reflow cycles.
What is the maximum allowable continuous collector current at 85 °C ambient?
At Tamb = 85 °C, the maximum continuous collector current is 72 mA. This is derived from thermal derating: Ptot = 250 mW at 25 °C, Rth(j-a) = 500 K/W, so Tj = Tamb + (Ptot × Rth) = 150 °C max; applying linear derating beyond 25 °C yields 72 mA at 85 °C using the 100 mA/250 mW relationship.
Can PDTC124XM be used in linear amplifier configurations?
No. PDTC124XM is optimized for switching operation only. Its built-in R1–R2 network fixes the base bias point, preventing stable DC operating point adjustment required for linear amplification. It lacks specified hFE linearity, frequency response, or distortion metrics needed for analog gain stages.
Does the SOT883 package support automated optical inspection (AOI)?
Yes, but with limitations. The SOT883's bottom-soldered terminals require side-view or 3D AOI systems capable of detecting coplanarity and solder volume beneath the package. Standard top-view AOI cannot verify all three solder joints; X-ray inspection is recommended for high-reliability production validation.
PDTC124XM,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PDTC124XM,315 FAQ
1.How can I place an order for PDTC124XM,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124XM,315 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 PDTC124XM,315 reliable?
The price and inventory of PDTC124XM,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124XM,315 is usually 5 days.
3.What payment methods are accepted for PDTC124XM,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124XM,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124XM,315?
PDTC124XM,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124XM,315 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 PDTC124XM,315?
For technical support, including PDTC124XM,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124XM,315 requirements.
6.How does Aetrix verify that PDTC124XM,315 is sourced from the original manufacturer or authorized distributors?
All PDTC124XM,315 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 PDTC124XM,315 meets industry standards.
7.What is the process for return or replacement of PDTC124XM,315?
All PDTC124XM,315 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124XM,315, 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 PDTC124XM,315 part is unused and in its original packaging.
Return procedure for PDTC124XM,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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