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Nexperia USA Inc. PDTC124ET,235
- Part No.:
- PDTC124ET,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC124ET,235.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,850
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Product details
Overview
PDTC124ET from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in SOT23 package, featuring integrated 22 kΩ input bias resistor (R1) and 22 kΩ emitter feedback resistor (R2), used for digital switching in automotive and industrial control circuits where simplified base drive and reduced component count are required.
For engineers reviewing the PDTC124ET datasheet, PDTC124ET pinout, PDTC124ET application, or PDTC124ET equivalent, key selection criteria include guaranteed VCEO = 50 V, IO = 100 mA output capability, built-in R1/R2 ratio of 1.0 ±0.2, VI(on) ≤ 1.7 V at 5 mA, and compatibility with 3.3 V/5 V logic-level drive without external biasing.
Technical Context
This NPN RET integrates two precision thin-film resistors directly into the die assembly: R1 connects base to input terminal, R2 connects base to emitter, enabling single-resistor logic interface. It operates as a digitally controlled switch with fixed current gain (hFE ≥ 60 at IC = 5 mA) and low saturation voltage (VCE(sat) ≤ 100 mV at IC/IB = 20).
The device complies with IEC 60134 absolute maximum ratings, supports ambient temperatures from –65 °C to +150 °C, and delivers thermal resistance Rth(j-a) = 500 K/W on standard FR4 PCB - enabling reliable operation in space-constrained industrial modules without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive and 36 V industrial supply rails. |
| IO | 100 mA - Continuous DC output current rating; sufficient for driving LED arrays, small relays, and logic inputs. |
| R1 | 22 kΩ (15.4–28.6 kΩ) - Input bias resistor; sets base current for logic-compatible turn-on with 3.3 V/5 V microcontroller outputs. |
| R2/R1 | 1.0 ±0.2 - Matched internal resistor ratio; ensures stable bias point and predictable switching thresholds across temperature. |
| VCE(sat) | ≤100 mV at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating during sustained conduction. |
| hFE | ≥60 at VCE = 5 V, IC = 5 mA - Guaranteed DC current gain ensures robust switching margin even under worst-case temperature and process variation. |
| VI(on) | 1.7 V (typ) at VCE = 0.3 V, IC = 5 mA - On-state input voltage confirms reliable activation with standard CMOS/TTL logic levels. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body height; optimized for reflow soldering per IPC-7095 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input (base node) | Connects to logic signal source; internally tied to R1; no external base resistor needed. |
| 2 (GND) | Ground (emitter node) | Emitter reference and return path; internally connected to R2; serves as common ground for bias network. |
| 3 (O) | Output (collector node) | Switched high-side load connection; carries full output current; requires external pull-up or load to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-resistor network | Eliminates two external SMT resistors, reducing BOM count and PCB area by ~2.5 mm² per instance. |
| Guaranteed R1 tolerance | ±25% (15.4–28.6 kΩ) ensures consistent logic-level compatibility across production lots and temperature ranges. |
| Low VI(off) | 1.1 V (typ) at IC = 100 µA - Enables clean cutoff with 1.8 V logic families and reduces false triggering in noisy environments. |
| Thermal robustness | Junction temperature rating up to 150 °C supports operation in engine bay and industrial motor control enclosures. |
| Standard SOT23 footprint | Enables drop-in replacement for BC847-series transistors without layout revision or stencil changes. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door module PCBs. IC Role / Device Role / Timing Role: NPN digital switch controlling current paths between battery rail and grounded loads. Use Value: Built-in R1/R2 eliminates discrete bias components, cutting assembly cost and improving reliability over discrete BJT + resistor solutions. | Use Scenario: Driving optocoupler inputs and relay coils in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Logic-level interface buffer isolating 3.3 V FPGA GPIO from 24 V field-side loads. Use Value: VI(on) ≤ 1.7 V ensures full turn-on with 3.3 V logic; 100 mA rating supports direct drive of 20 mA optocouplers and 50 mA relay coils. |
| Consumer Appliance Control Board | IoT Sensor Node Power Management |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., display backlight, buzzer, fan) in smart washing machine mainboard. IC Role / Device Role / Timing Role: Low-power load switch activated by MCU GPIO pins. Use Value: 100 mV VCE(sat) limits conduction loss to <10 mW at 100 mA, extending system efficiency and reducing thermal stress on compact PCBs. | Use Scenario: Controlling sleep-mode power gating for BLE radio and environmental sensors in battery-powered edge nodes. IC Role / Device Role / Timing Role: Ultra-low-quiescent-load switch disconnecting non-critical subsystems during deep-sleep cycles. Use Value: ICEO ≤ 5 µA at 150 °C ensures <1 µA leakage in hot environments, preserving battery life over multi-year deployments. |
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 |
|---|---|---|---|
| BC847B,215 | Discrete NPN BJT without integrated resistors; requires external RB and RE; hFE = 200–450 (wider spread); VCEO = 45 V. | Higher gain but less predictable switching threshold; needs additional passives and layout area. | Select when precise gain control or higher frequency response (>250 MHz fT) is prioritized over BOM simplification. |
| PDTA124ET,235 | PNP complement with identical R1/R2 values (22 kΩ each); VECO = 50 V; same SOT23 package and marking format. | Used for high-side switching or complementary logic stages; not interchangeable in NPN circuit positions. | Select only for PNP-side implementation in push-pull or level-shifting topologies requiring matched RET characteristics. |
Compared with BC847B,215, PDTC124ET reduces design complexity and test time via integrated biasing; versus PDTA124ET, it provides NPN polarity essential for low-side switching - making it optimal for MCU-driven ground-referenced load control.
Availability
PDTC124ET is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and consumer appliance control boards requiring stable component supply and long-term manufacturability.
Supply support for PDTC124ET 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
PDTC124ET belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to replace discrete BJT + resistor combinations in digital switching applications while maintaining SOT23 footprint compatibility and AEC-Q200-aligned robustness.
FAQ
What is the maximum continuous collector current for PDTC124ET?
The PDTC124ET is rated for 100 mA continuous DC output current (IO) under ambient conditions ≤25 °C with proper PCB copper area. Derating applies above 25 °C per the 250 mW total power dissipation limit and 500 K/W junction-to-ambient thermal resistance.
Can PDTC124ET be used with 1.8 V logic inputs?
Yes - its typical VI(on) is 1.7 V at IC = 5 mA, and VI(off) is 1.1 V, providing sufficient noise margin for 1.8 V CMOS logic. However, ensure IC remains within 100 mA and verify VCE(sat) stays ≤100 mV under actual load conditions.
Is PDTC124ET automotive-qualified?
No - per Nexperia's 2022 revision history, PDTC124ET is explicitly designated as non-automotive qualified. For automotive applications, select the -Q qualified variant (e.g., PDTC124ET,115) which undergoes AEC-Q101 stress testing and includes extended temperature validation.
How does the R2/R1 ratio affect switching behavior?
The R2/R1 ratio of 1.0 ±0.2 stabilizes the base-emitter voltage and improves immunity to temperature-induced gain drift. This ratio ensures consistent VI(on)/VI(off) thresholds across –40 °C to +125 °C, reducing need for external hysteresis in noisy industrial environments.
PDTC124ET,235 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):
- 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):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC124ET,235 FAQ
1.How can I place an order for PDTC124ET,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124ET,235 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 PDTC124ET,235 reliable?
The price and inventory of PDTC124ET,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124ET,235 is usually 5 days.
3.What payment methods are accepted for PDTC124ET,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124ET,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124ET,235?
PDTC124ET,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124ET,235 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 PDTC124ET,235?
For technical support, including PDTC124ET,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124ET,235 requirements.
6.How does Aetrix verify that PDTC124ET,235 is sourced from the original manufacturer or authorized distributors?
All PDTC124ET,235 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 PDTC124ET,235 meets industry standards.
7.What is the process for return or replacement of PDTC124ET,235?
All PDTC124ET,235 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124ET,235, 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 PDTC124ET,235 part is unused and in its original packaging.
Return procedure for PDTC124ET,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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