My Inquiry
My Account
Nexperia USA Inc. PDTD123TT,215
- Part No.:
- PDTD123TT,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTD123TT,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,840
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDTD123TT from Nexperia is a 500 mA, 50 V NPN resistor-equipped transistor (RET) with integrated 2.2 kΩ input bias resistor and open R2 configuration, designed for digital switching in automotive and industrial control circuits where simplified drive logic and reduced external component count are required.
For engineers reviewing the PDTD123TT datasheet, PDTD123TT pinout, PDTD123TT application, or PDTD123TT equivalent, this device serves as a cost-optimized, surface-mount alternative to discrete BJT + resistor combinations in load switching, microcontroller I/O interfacing, and level-shifting applications requiring ≤500 mA output current and 50 V VCEO.
Technical Context
This RET integrates a single 2.2 kΩ base-input resistor (R1) and no internal emitter-base resistor (R2 = open), enabling direct connection to CMOS/TTL logic outputs without external pull-down or current-limiting resistors. Its SOT23 package supports high-density PCB layouts.
It operates as a saturated switch with guaranteed VCE(sat) ≤ 0.3 V at IC = 50 mA / IB = 2.5 mA, and maintains hFE ≥ 100 across −40 °C to +100 °C ambient, supporting robust digital on/off control in temperature-variable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V industrial bus and 12 V automotive systems with margin. |
| IO | 500 mA - Continuous DC output current capability; suitable for driving relays, LEDs, small solenoids, and logic inputs. |
| R1 | 2.2 kΩ (typ) - Integrated base bias resistor; eliminates need for external resistor and reduces BOM count by one component. |
| VCE(sat) | ≤ 0.3 V @ IC=50 mA - Low saturation voltage minimizes power loss and self-heating during switching. |
| hFE | 100–300 - DC current gain range ensures reliable turn-on with low base drive current (e.g., 2.5 mA drives 50 mA load). |
| Ptot | 250 mW @ Tamb ≤ 25 °C - Thermal limit for SOT23 package; requires derating above 25 °C ambient per Rth(j-a) = 500 K/W. |
Pinout & Package
The PDTD123TT is housed in a standard SOT23 (TO-236AB) plastic surface-mount package measuring 3.0 × 1.4 × 1.1 mm, optimized for automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level voltage (≤12 V) to enable transistor conduction. |
| 2 | GND (emitter) | Common reference node; tied to system ground; provides return path for base and collector currents. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., relay coil anode or LED cathode) referenced to positive supply. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistor (R1) | 2.2 kΩ ±30% - Enables direct TTL/CMOS drive without external resistor, reducing layout area and assembly steps. |
| Open R2 configuration | No emitter-base resistor - Prevents unintended leakage paths and allows flexible external pull-down or feedback design. |
| 500 mA output rating | Guaranteed continuous current - Supports medium-power loads such as automotive indicator lamps and industrial sensor drivers. |
| SOT23 footprint compatibility | Standard JEDEC TO-236AB outline - Ensures drop-in replacement in existing designs using similar 3-pin SOT packages. |
Applications
| Automotive Lighting Control | Industrial PLC Output Stage |
|---|---|
Use Scenario: Driving LED brake/tail lamps from MCU GPIO pins in 12 V vehicle systems. IC Role / Device Role / Timing Role: Digital switch translating 3.3 V/5 V logic signals into 12 V, 200–400 mA lamp current paths. Use Value: Eliminates need for external base resistor and reduces thermal stress vs. discrete BJT due to guaranteed VCE(sat) ≤ 0.3 V. | Use Scenario: Interfacing programmable logic controller (PLC) digital outputs to 24 V DC solenoid valves. IC Role / Device Role / Timing Role: Level-shifting and current amplification stage between low-voltage control logic and higher-power actuator loads. Use Value: Simplifies board layout with single-component solution and supports operation up to 85 °C ambient per industrial specs. |
| Consumer Appliance Motor Driver | IoT Sensor Interface Circuit |
Use Scenario: Controlling small DC fan motors in smart home appliances using 3.3 V microcontroller outputs. IC Role / Device Role / Timing Role: Low-side switch enabling PWM-controlled motor speed regulation with minimal gate drive complexity. Use Value: Reduces bill-of-materials count and improves reliability over discrete BJT + resistor assemblies under repeated thermal cycling. | Use Scenario: Isolating and conditioning analog sensor outputs (e.g., thermistor networks) before ADC input in battery-powered edge devices. IC Role / Device Role / Timing Role: Signal conditioning switch enabling multiplexed sensor readout via controlled grounding of sensor legs. Use Value: Provides precise, low-leakage (<0.5 μA ICEO) switching essential for high-impedance sensor measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN digital switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC817-40,215 | No integrated bias resistor; requires external 2.2 kΩ base resistor; hFE = 250–630 (wider spread); same SOT23 package. | Higher gain variability increases risk of overdrive or insufficient turn-on in marginal logic drive conditions. | Select when tighter hFE tolerance or lower cost per unit is prioritized over design simplification. |
| PDTB123TT | PNP complement; identical R1 value and SOT23 package; VECO = 50 V; IO = −500 mA. | Used for high-side switching or complementary push-pull configurations where sourcing current is required. | Select when designing bidirectional or complementary output stages needing matched RET characteristics in both polarities. |
Compared with BC817-40,215, PDTD123TT reduces design iteration time by eliminating resistor selection and layout; compared with PDTB123TT, it provides NPN functionality for low-side switching while maintaining identical thermal and footprint behavior.
Availability
PDTD123TT is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC output stages, and consumer appliance motor drivers requiring stable component supply and long-term production continuity.
Supply support for PDTD123TT 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.
The PDTD123TT belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT + resistor combinations in digital interface and switching applications demanding space, cost, and assembly efficiency.
FAQ
What is the maximum input voltage that can be applied to the base terminal (Pin 1) of PDTD123TT?
The absolute maximum input voltage (VI) is +12 V for positive signals and −5 V for negative transients, as specified in the limiting values table. Exceeding these levels risks permanent damage to the integrated R1 resistor or junction integrity, even if current is limited externally.
Can PDTD123TT be used in linear (analog) amplifier configurations?
No - PDTD123TT is optimized and characterized exclusively for saturated switching operation. Its hFE variation across collector current and temperature, lack of linear region specifications, and fixed R1 biasing make it unsuitable for analog amplification or active-load applications.
Is the SOT23 package of PDTD123TT lead-free and RoHS compliant?
Yes - Nexperia confirms full RoHS compliance and lead-free construction for the PDTD123TT in its official documentation and product change notices, with termination finish meeting JEDEC J-STD-020 moisture sensitivity level 1 requirements.
How does the open R2 configuration affect circuit behavior when driving capacitive loads?
With R2 open, there is no internal path to discharge base-emitter capacitance during turn-off, potentially increasing fall time. For fast-switching capacitive loads, an external 10–100 kΩ pull-down resistor from base to emitter (Pin 1 to Pin 2) is recommended to ensure clean, predictable turn-off transitions.
PDTD123TT,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):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTD123TT,215 FAQ
1.How can I place an order for PDTD123TT,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTD123TT,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 PDTD123TT,215 reliable?
The price and inventory of PDTD123TT,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD123TT,215 is usually 5 days.
3.What payment methods are accepted for PDTD123TT,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD123TT,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTD123TT,215?
PDTD123TT,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTD123TT,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 PDTD123TT,215?
For technical support, including PDTD123TT,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD123TT,215 requirements.
6.How does Aetrix verify that PDTD123TT,215 is sourced from the original manufacturer or authorized distributors?
All PDTD123TT,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 PDTD123TT,215 meets industry standards.
7.What is the process for return or replacement of PDTD123TT,215?
All PDTD123TT,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTD123TT,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 PDTD123TT,215 part is unused and in its original packaging.
Return procedure for PDTD123TT,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTD123TT,215 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
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.
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
