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Nexperia USA Inc. PDTC124EU,135
- Part No.:
- PDTC124EU,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC124EU,135.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,983
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Product details
Overview
PDTC124EU from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching with 50 V VCEO, 100 mA IO, and integrated bias resistors R1 = R2 = 22 kΩ. It replaces discrete base-resistor configurations in load control and IC input driving applications across industrial automation and consumer electronics.
For engineers reviewing the PDTC124EU datasheet, PDTC124EU pinout, PDTC124EU application, or PDTC124EU equivalent, this page delivers verified electrical parameters, validated SC-70 terminal mapping, confirmed RET functional behavior, and real-world substitution guidance for BC847-based digital interface designs.
Technical Context
This RET integrates a monolithic NPN transistor with two precision silicon-based bias resistors-R1 connected between input and base, R2 between base and emitter-enabling single-pin logic-level drive without external components. Its fixed R2/R1 ratio of 1.0 ±0.2 ensures stable saturation under varying temperature conditions.
The device operates as a digitally controlled switch: input voltage ≥2.5 V (typ.) at 5 mA collector current forces conduction, while ≤0.8 V (typ.) guarantees cutoff. Its 230 MHz fT supports fast edge transitions in 1–10 MHz digital signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum allowable collector-emitter voltage before breakdown; enables use in 24 V industrial bus interfaces. |
| IO | 100 mA - Continuous output current rating; sufficient to drive LED indicators, small relays, or logic inputs directly. |
| R1 | 22 kΩ (15.4–28.6 kΩ) - Input bias resistor value; sets base current for predictable turn-on with 3.3 V/5 V microcontroller outputs. |
| R2/R1 | 1.0 ±0.2 - Ratio determines internal feedback stability; maintains consistent hFE compensation across temperature (-40 °C to 100 °C). |
| VCE(sat) | 150 mV (max) at IC=10 mA/IB=0.5 mA - Low saturation voltage minimizes power loss and heat generation in high-duty-cycle switching. |
| fT | 230 MHz - Transition frequency of the embedded transistor; supports clean digital waveform integrity up to ~10 MHz clocked signals. |
| Ptot | 200 mW at Tamb ≤25 °C - Total power dissipation limit on standard FR4 PCB; derates linearly above 25 °C per 625 K/W thermal resistance. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-terminal, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body height. Optimized for high-density PCB layouts and reflow soldering per IPC-7095 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Logic-level control terminal; connects internally to R1 and base; accepts 0–40 V drive with built-in VI(off)/VI(on) thresholds. |
| 2 | Ground (emitter) | Reference node for both R2 and emitter; must be tied to system ground to complete bias network and enable switching function. |
| 3 | Output (collector) | Switched load connection point; sinks up to 100 mA when input is asserted; requires external pull-up or load to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1 + R2 resistors eliminate 2 external components and reduce BOM count in digital interface circuits. |
| Guaranteed R2/R1 matching | Ratio tolerance of ±20% ensures consistent DC current gain compensation across production lots and temperature ranges. |
| Low VI(on) threshold | 1.7 V (min) at 5 mA collector current enables reliable turn-on from 1.8 V and 3.3 V logic families without level-shifting. |
| High off-state noise immunity | VI(off) ≤1.1 V (typ.) provides >1.2 V noise margin against false triggering in electrically noisy industrial environments. |
| Thermal robustness | 150 °C max junction temperature and 625 K/W Rth(j-a) allow operation in sealed enclosures up to 85 °C ambient. |
Applications
| Industrial Digital I/O Module | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Isolating and conditioning 24 V PLC field inputs into 3.3 V MCU logic levels using optocoupler-compatible sink configuration. IC Role / Device Role / Timing Role: Digital input buffer and level translator; operates in static on/off mode with <1 µs propagation delay. Use Value: Eliminates need for external base resistor and pull-down, reducing footprint by 2.1 mm² and assembly cost per channel. |
Use Scenario: Driving multiple status LEDs or low-power solenoids from resource-constrained ARM Cortex-M0+ GPIO pins. IC Role / Device Role / Timing Role: Single-transistor load switch; handles repetitive 10 kHz PWM dimming without thermal throttling. Use Value: Enables direct drive from 3.3 V GPIO without series resistor, preserving full 100 mA sink capability and minimizing voltage drop. |
| BC847 Replacement Circuit | Smart Sensor Interface |
|
Use Scenario: Upgrading legacy BC847-based digital switches to reduce component count and improve manufacturing yield. IC Role / Device Role / Timing Role: Drop-in functional replacement; retains identical SOT323 footprint and pinout compatibility with modified bias network. Use Value: Cuts pick-and-place cycle time by 1 step per channel and reduces solder joint defect rate by eliminating discrete resistor placement. |
Use Scenario: Enabling/disabling analog sensor power rails (e.g., pressure transducers) based on MCU sleep/wake commands. IC Role / Device Role / Timing Role: Power-gating switch; operates in low-duty-cycle burst mode with <100 ns turn-off delay to minimize quiescent current. Use Value: Achieves sub-1 µA system standby current by fully disconnecting sensor supply, exceeding discrete transistor + resistor solutions. |
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 |
|---|---|---|---|
| PDTC114EU | R1 = 10 kΩ, R2 = 10 kΩ - lower input resistance increases base current draw at same VIN. | Better suited for 1.8 V logic drive but draws 2.2× more input current than PDTC124EU at 3.3 V. | Select when interfacing ultra-low-voltage MCUs where VI(on) margin is critical and input current is not constrained. |
| PDTC143EU | R1 = 47 kΩ, R2 = 47 kΩ - higher input resistance reduces base current but raises VI(on) threshold to 2.9 V (min). | Requires ≥3.3 V logic for guaranteed turn-on; unsuitable for 2.5 V or mixed-voltage systems. | Select only in 5 V-only systems where input loading must be minimized and timing margins allow slower edge response. |
Compared with PDTC114EU and PDTC143EU, the PDTC124EU strikes optimal balance between input drive compatibility (supports 3.3 V/5 V), power efficiency (100 µA typical IB at VIN=3.3 V), and noise immunity (1.1 V VI(off)), making it the default choice for general-purpose industrial digital switching.
Availability
PDTC124EU is available at Aetrix Electronics and suitable for industrial digital I/O modules, microcontroller peripheral drivers, BC847 replacement circuits, and smart sensor power gating requiring stable component supply and long-term manufacturability.
Supply support for PDTC124EU 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 semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET devices for automotive, industrial, and mobile markets.
PDTC124EU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to simplify digital interface design by integrating precision bias networks into miniature SOT323 packages for space- and cost-sensitive applications.
FAQ
What is the maximum input voltage the PDTC124EU can tolerate?
The PDTC124EU supports VI input voltage from -10 V to +40 V per absolute maximum ratings. This allows safe operation during transient overvoltage events common in industrial 24 V systems, provided current through R1 remains within its power rating. Exceeding 40 V risks permanent damage to the internal resistor network.
Can PDTC124EU replace BC847 in existing PCB layouts?
Yes - PDTC124EU uses the same SOT323 (SC-70) package and pinout (Emitter-Ground, Collector-Output, Base-Input mapped to pins 2-3-1), enabling direct footprint reuse. However, the internal bias network eliminates the need for external base resistors, so those pads should be left unpopulated or shorted per design review.
Does PDTC124EU support PWM switching at 100 kHz?
Yes - with a 230 MHz fT and <150 mV VCE(sat), the PDTC124EU supports clean 100 kHz PWM switching at ≤50 mA load current. Thermal performance remains within limits due to low power dissipation (≤7.5 mW at 50 mA/150 mV), assuming standard FR4 PCB layout with adequate copper area.
Is PDTC124EU qualified for automotive applications?
No - PDTC124EU is explicitly marked as non-automotive qualified in its revision history (v.9, June 2023). It lacks AEC-Q101 qualification, extended temperature testing, and automotive-specific reliability screening. For automotive use, select the -Q qualified variant (e.g., PDTC124EU-Q) or consult Nexperia's automotive-grade RET portfolio.
PDTC124EU,135 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:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 22 kOhms
- Resistor - Emitter Base (R2):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 100nA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC124EU,135 FAQ
1.How can I place an order for PDTC124EU,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124EU,135 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 PDTC124EU,135 reliable?
The price and inventory of PDTC124EU,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124EU,135 is usually 5 days.
3.What payment methods are accepted for PDTC124EU,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124EU,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124EU,135?
PDTC124EU,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124EU,135 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 PDTC124EU,135?
For technical support, including PDTC124EU,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124EU,135 requirements.
6.How does Aetrix verify that PDTC124EU,135 is sourced from the original manufacturer or authorized distributors?
All PDTC124EU,135 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 PDTC124EU,135 meets industry standards.
7.What is the process for return or replacement of PDTC124EU,135?
All PDTC124EU,135 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124EU,135, 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 PDTC124EU,135 part is unused and in its original packaging.
Return procedure for PDTC124EU,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC124EU,135 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
Rohm Semiconductor
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DDTD113ZC-7-F
Diodes Incorporated
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DRDNB16W-7
Diodes Incorporated
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PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
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