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Nexperia USA Inc. PDTC123JT,235
- Part No.:
- PDTC123JT,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC123JT,235.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:94,662
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Product details
Overview
PDTC123JT,235 from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in SOT23 package, integrating R1 = 2.2 kΩ and R2 = 47 kΩ bias resistors. It functions as a single-chip digital switch for IC input control and low-power load switching in industrial digital circuits, with VCE(sat) ≤ 100 mV at IC = 5 mA and hFE ≥ 100 at VCE = 5 V, IC = 10 mA.
For engineers reviewing the PDTC123JT,235 datasheet, PDTC123JT,235 pinout, PDTC123JT,235 application, or PDTC123JT,235 equivalent, this part serves as a drop-in cost-optimized replacement for BC847-based digital interface stages-requiring verification of input voltage thresholds (VI(on) = 0.75–1.1 V), output current capability (100 mA max), thermal derating on FR4 PCBs, and compatibility with 1.9 mm pitch SMT assembly.
Technical Context
This NPN RET integrates two precision thin-film resistors (R1 = 2.2 kΩ ±30%, R2/R1 = 21 ±24%) directly into the base-emitter path to enable direct logic-level drive without external biasing. Its internal transistor exhibits fT = 230 MHz and Cc = 2.5 pF at VCB = 10 V, supporting fast switching in digital signal routing.
The device operates within −65 °C to +150 °C ambient range, with Ptot = 250 mW at Tamb ≤ 25 °C on standard FR4 PCB, and thermal resistance Rth(j-a) = 500 K/W. VI(off) ≤ 0.6 V ensures reliable turn-off under TTL/CMOS logic low conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; sets safe operating margin for 24 V industrial bus interfacing. |
| IO | 100 mA - Continuous output current rating; supports driving LED indicators, small relays, or logic inputs without external current limiting. |
| R1 | 2.2 kΩ - Input bias resistor value; defines base current for logic-high drive (e.g., ~1.1 mA from 3.3 V GPIO). |
| VCE(sat) | ≤100 mV at IC = 5 mA - Low saturation voltage minimizes power loss and heat generation in switching applications. |
| hFE | ≥100 at VCE = 5 V, IC = 10 mA - Ensures sufficient current gain for robust digital on/off behavior across temperature. |
| fT | 230 MHz - Transition frequency of internal transistor; enables reliable operation up to ~10–20 MHz digital switching. |
| Cc | 2.5 pF - Collector capacitance at VCB = 10 V; limits high-frequency signal coupling and affects rise/fall times. |
Pinout & Package
PDTC123JT,235 is housed in a standard SOT23 (TO-236AB) plastic surface-mount package measuring 2.9 mm × 1.3 mm × 1.0 mm with 1.9 mm lead pitch. The package is optimized for reflow soldering on FR4 PCBs with 35 μm tin-plated copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level voltage (0.75–1.1 V threshold) to activate transistor. |
| 2 | Ground (emitter) | Common reference node for both bias network and output path; must be tied to system ground plane. |
| 3 | Output (collector) | Switched high-side output node; sinks up to 100 mA when active, with <100 mV drop to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors (R1 = 2.2 kΩ, R2 = 47 kΩ) | Eliminates need for two external resistors, reducing BOM count and PCB area by ~3 mm² per instance. |
| 100 mA output current capability | Supports direct drive of status LEDs, optocoupler inputs, or small-signal MOSFET gates without buffer stages. |
| VI(on) = 0.75–1.1 V at IC = 5 mA | Ensures compatibility with 1.8 V, 3.3 V, and 5 V logic families while maintaining noise margin. |
| VI(off) ≤ 0.6 V | Guarantees full turn-off with standard CMOS/TTL logic low outputs, preventing unintended conduction. |
| SOT23 footprint compatibility | Enables use of existing pick-and-place tooling and reflow profiles designed for BC847, MMBT3904, and similar transistors. |
Applications
| Industrial Digital Control | Logic-Level Interface Buffer |
|---|---|
|
Use Scenario: Isolating microcontroller GPIO pins from higher-voltage industrial sensors or actuators using discrete level-shifting. IC Role / Device Role / Timing Role: Acts as a unidirectional digital switch that translates 3.3 V logic signals to 24 V open-collector outputs. Use Value: Reduces component count by replacing dual-resistor + transistor designs, lowering assembly cost and improving reliability. |
Use Scenario: Driving optocoupler inputs in isolated communication interfaces (e.g., RS-485, CAN bus receivers). IC Role / Device Role / Timing Role: Provides controlled current sink (~5–10 mA) to forward-bias optocoupler LED with stable turn-on timing. Use Value: Delivers consistent IF despite supply rail variation due to integrated R1/R2 ratio stability (21 ±24%). |
| LED Status Indicator Driver | Microcontroller Input Protection Switch |
|
Use Scenario: Directly driving panel-mounted indicator LEDs from MCU I/O pins in factory HMI panels. IC Role / Device Role / Timing Role: Functions as a current-limited active-low sink switch with <100 mV saturation drop. Use Value: Enables bright LED illumination (e.g., 10 mA @ 2.1 V) while protecting GPIO from overcurrent and ESD. |
Use Scenario: Enabling/disabling analog sensor inputs via software-controlled gating in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Serves as a low-leakage (<1 µA ICEO) enable switch between sensor output and ADC input. Use Value: Prevents sensor loading during sleep mode, extending battery life without requiring complex analog switches. |
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 built-in resistors; requires external RB ≈ 10 kΩ for similar IB; hFE = 200–450 (wider spread). | Higher design flexibility but increases BOM count and layout complexity; less suitable for space-constrained digital logic buffers. | Select when precise hFE control or adjustable biasing is required; avoid if minimizing assembly steps is critical. |
| PDTA123JT,235 | PNP complement with identical R1/R2 values; VECO = 50 V, IO = −100 mA; same SOT23 package and marking format. | Used for high-side switching or inverted logic paths; not interchangeable in NPN-configured circuits without schematic revision. | Choose for complementary push-pull stages or when sourcing current from positive rails is needed. |
Compared with BC847B,215, PDTC123JT,235 reduces bill-of-materials and layout area at the cost of fixed biasing; versus PDTA123JT,235, it provides non-inverting digital switching functionality essential for direct GPIO interfacing.
Availability
PDTC123JT,235 is available at Aetrix Electronics and suitable for industrial digital control, logic-level interface buffering, LED status indication, and microcontroller input protection requiring stable component supply and SOT23-compatible manufacturing flow.
Supply support for PDTC123JT,235 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 production of essential semiconductors for automotive, industrial, mobile, and computing markets.
PDTC123JT,235 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to simplify digital interface design by integrating precision bias networks into standard transistor packages for cost-sensitive, high-reliability industrial applications.
FAQ
What is the maximum continuous collector current for PDTC123JT,235?
The absolute maximum continuous output current is 100 mA, specified under conditions where ambient temperature does not exceed 25 °C on a standard FR4 PCB. At elevated temperatures, derating applies per the 500 K/W thermal resistance curve-e.g., at 85 °C ambient, usable current drops to approximately 65 mA to maintain junction temperature below 150 °C.
Can PDTC123JT,235 replace BC847 in existing designs without modification?
Yes, in most digital switching applications-but only if the original BC847 circuit uses fixed base biasing with ~10 kΩ resistor. PDTC123JT,235's integrated R1 = 2.2 kΩ delivers higher base current, so verify VI(on) and VCE(sat) remain within target logic thresholds. Layout changes are unnecessary due to identical SOT23 footprint and pinout.
What is the significance of the R2/R1 ratio specification?
The R2/R1 ratio of 21 ±24% determines the effective feedback factor in the internal bias network, stabilizing operating point against hFE variation. This ratio ensures predictable turn-on behavior across process and temperature, enabling reliable digital switching without external compensation components.
Is PDTC123JT,235 qualified for automotive applications?
No. Per Nexperia's 2023 data sheet revision, PDTC123JT,235 is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade screening. For automotive use, select the -Q qualified variant (e.g., PDTC123JTX), which undergoes extended temperature cycling, humidity testing, and failure analysis per AEC standards.
PDTC123JT,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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC123JT,235 FAQ
1.How can I place an order for PDTC123JT,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123JT,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 PDTC123JT,235 reliable?
The price and inventory of PDTC123JT,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123JT,235 is usually 5 days.
3.What payment methods are accepted for PDTC123JT,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123JT,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123JT,235?
PDTC123JT,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123JT,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 PDTC123JT,235?
For technical support, including PDTC123JT,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123JT,235 requirements.
6.How does Aetrix verify that PDTC123JT,235 is sourced from the original manufacturer or authorized distributors?
All PDTC123JT,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 PDTC123JT,235 meets industry standards.
7.What is the process for return or replacement of PDTC123JT,235?
All PDTC123JT,235 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123JT,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 PDTC123JT,235 part is unused and in its original packaging.
Return procedure for PDTC123JT,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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