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Nexperia USA Inc. PDTC124ET,215
- Part No.:
- PDTC124ET,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC124ET,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:18,991
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Product details
Overview
PDTC124ET from Nexperia is an NPN resistor-equipped transistor (RET) in SOT23 package, designed for digital switching with integrated 22 kΩ input and feedback bias resistors, 50 V VCEO, 100 mA IO, and 100 mV VCE(sat) at IC = 10 mA / IB = 0.5 mA - used in automotive and industrial load control and IC input interfacing.
For engineers reviewing the PDTC124ET datasheet, PDTC124ET pinout, PDTC124ET application, or PDTC124ET equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, real-world switching use cases, and confirmed alternatives to BC847-based discrete bias networks.
Technical Context
The PDTC124ET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors: R1 (22 kΩ) connects base to input, and R2 (22 kΩ) connects base to emitter, forming a fixed 1:1 bias ratio that enables direct logic-level drive without external components. It operates as a saturated switch, not a linear amplifier.
Its 50 V VCEO rating and 100 mA continuous output current support robust digital interface applications across 3.3 V and 5 V systems; thermal resistance of 500 K/W (junction-to-ambient, FR4 PCB) defines its derating envelope up to 125 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - maximum collector-emitter voltage before breakdown; supports 24 V industrial bus and 12 V automotive loads with margin. |
| IO | 100 mA - guaranteed continuous output current; sufficient for driving LEDs, small relays, and logic inputs. |
| R1 | 22 kΩ ±30% - built-in base-input resistor; eliminates need for external pull-up or series resistor in microcontroller GPIO interfaces. |
| VCE(sat) | 100 mV max at IC = 10 mA / IB = 0.5 mA - low saturation voltage ensures minimal power loss and heat generation during switching. |
| hFE | 60 min at VCE = 5 V, IC = 5 mA - DC current gain ensures reliable turn-on with standard logic drive levels. |
| Ptot | 250 mW at Tamb ≤ 25 °C - total power dissipation limit; derates linearly above 25 °C per 500 K/W thermal resistance. |
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, tin-plated leads, FR4-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base via R1) | Logic signal entry point; internally connected through 22 kΩ resistor to transistor base - accepts 3.3 V/5 V CMOS/TTL directly. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; serves as common return path for load current and bias network. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode or relay coil) - sinks current when active. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1 = 22 kΩ + R2 = 22 kΩ eliminates 2 external resistors and reduces BOM count by one component per switch node. |
| Logic-compatible input | VI(on) = 1.7 V typ at IC = 5 mA - reliably activates from 3.3 V GPIO without level-shifting or additional driver stages. |
| Low saturation loss | VCE(sat) ≤ 100 mV ensures <1 mW conduction loss at 10 mA, critical for thermally constrained PCB layouts. |
| Automotive-grade reliability | Rated for -65 °C to +150 °C operation and qualified per AEC-Q101 stress tests (non-automotive variant; Q-part available). |
Applications
| Automotive Body Control | Industrial PLC Input Interface |
|---|---|
|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door modules and lighting control units. IC Role / Device Role / Timing Role: Digital output switch replacing discrete BJT + resistor combinations in low-power actuation circuits. Use Value: Reduces PCB area by 30% vs. BC847 + 2×0402 resistors and eliminates solder joint reliability risk from three-component assembly. |
Use Scenario: Level-shifting and isolating 24 V field signals into 3.3 V microcontroller GPIOs in modular I/O terminals. IC Role / Device Role / Timing Role: Input conditioning switch providing galvanic separation and overvoltage protection via internal resistor network. Use Value: Enables direct connection of 24 V dry-contact sensors without external Zener clamping or voltage dividers. |
| Consumer Appliance Power Sequencing | IoT Sensor Node Load Control |
|
Use Scenario: Enabling/disabling auxiliary rails (e.g., display backlight, fan controller) during boot-up and sleep transitions. IC Role / Device Role / Timing Role: Low-quiescent enable switch controlled by MCU reset or state machine outputs. Use Value: VI(off) ≥ 0.8 V ensures clean cutoff at 0 V GPIO, preventing leakage-induced partial turn-on during MCU reset. |
Use Scenario: Driving low-current peripherals (e.g., environmental sensor enable pins, RF module reset lines) in battery-powered edge nodes. IC Role / Device Role / Timing Role: Ultra-low standby current switch with ICEO ≤ 5 µA at 150 °C junction temperature. Use Value: Extends coin-cell battery life by minimizing off-state leakage - critical for 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 with no built-in resistors; requires external 22 kΩ base resistor for equivalent biasing. | Higher component count and layout sensitivity; lacks integrated R2 feedback path for stable saturation. | Select when fine-tuned hFE control or higher VCEO (65 V) is required; accept added design complexity. |
| PDTA124ET,215 | PNP complement with identical R1/R2 values (22 kΩ), same SOT23 package, but inverted polarity and -50 V VECO. | Used for high-side switching where load connects to VCC; not interchangeable without circuit redesign. | Select for complementary high-side drive in push-pull or dual-rail configurations - not a drop-in replacement. |
Compared with BC847B,215, the PDTC124ET reduces bill-of-materials and improves production yield by integrating biasing; compared with PDTA124ET, it provides NPN-sink functionality essential for grounded-load topologies in most microcontroller interfaces.
Availability
PDTC124ET is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, consumer appliance power sequencing, and IoT sensor node load control requiring stable component supply and long-term obsolescence management.
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.
The PDTC124ET belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to replace discrete BJT-resistor combinations in digital switching applications while improving manufacturing efficiency and board-level reliability.
FAQ
What is the maximum operating temperature for PDTC124ET?
The PDTC124ET has a maximum junction temperature (Tj) of 150 °C and an ambient operating range of –65 °C to +150 °C. Its thermal resistance is 500 K/W on standard FR4 PCB, so at 25 °C ambient, full 250 mW power dissipation is allowed; above that, derating is linear at 0.5 mW/°C.
Can PDTC124ET be used with 3.3 V microcontrollers?
Yes - its VI(on) is 1.7 V typical at IC = 5 mA, ensuring reliable turn-on from 3.3 V GPIOs without external level shifting. VI(off) is 1.1 V typical, guaranteeing full cutoff at 0 V or near-zero logic low states.
Is PDTC124ET automotive-qualified?
No - this variant is non-automotive qualified. Nexperia offers the automotive-grade PDTC124ET-Q with AEC-Q101 qualification; the standard PDTC124ET,215 is intended for industrial and consumer applications per its 2022 revision history.
How does the R2/R1 ratio affect switching behavior?
The R2/R1 ratio is 1.0 ±20%, meaning R2 matches R1 (22 kΩ). This creates strong base-emitter feedback that stabilizes saturation and prevents thermal runaway - unlike single-resistor biasing, it ensures consistent IC/IB ratio across temperature and process variation.
PDTC124ET,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:
- 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,215 FAQ
1.How can I place an order for PDTC124ET,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC124ET,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 PDTC124ET,215 reliable?
The price and inventory of PDTC124ET,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124ET,215 is usually 5 days.
3.What payment methods are accepted for PDTC124ET,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124ET,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC124ET,215?
PDTC124ET,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC124ET,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 PDTC124ET,215?
For technical support, including PDTC124ET,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124ET,215 requirements.
6.How does Aetrix verify that PDTC124ET,215 is sourced from the original manufacturer or authorized distributors?
All PDTC124ET,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 PDTC124ET,215 meets industry standards.
7.What is the process for return or replacement of PDTC124ET,215?
All PDTC124ET,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124ET,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 PDTC124ET,215 part is unused and in its original packaging.
Return procedure for PDTC124ET,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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