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Nexperia USA Inc. PDTC123JU,115
- Part No.:
- PDTC123JU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC123JU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:114,387
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Product details
Overview
PDTC123JU from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, rated for 50 V VCEO, 100 mA output current, with integrated bias resistors R1 = 2.2 kΩ and R2 = 47 kΩ. It functions as a single-chip digital switch for IC input control and low-power load switching in industrial digital circuits.
For engineers reviewing the PDTC123JU datasheet, PDTC123JU pinout, PDTC123JU application, or PDTC123JU equivalent, this part serves as a drop-in replacement for BC847-based digital interface stages where reduced BOM count, simplified base drive, and consistent switching thresholds are required.
Technical Context
This RET integrates a monolithic NPN transistor with two precision on-die resistors: R1 connects the input terminal to the base, and R2 shunts base to emitter. The R2/R1 ratio of 21 (typ.) sets predictable DC current gain behavior under standard logic-level drive.
It operates within a −65 °C to +150 °C ambient range, delivers ≤100 mV VCE(sat) at IC = 5 mA / IB = 0.25 mA, and maintains hFE ≥100 at VCE = 5 V and IC = 10 mA - enabling reliable saturation in 3.3 V and 5 V logic-controlled switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - supports rail-to-rail switching in 24 V industrial control inputs without breakdown risk. |
| IO | 100 mA - sufficient for driving LED indicators, small relays, or logic gate inputs directly. |
| R1 | 2.2 kΩ - sets defined base current path from microcontroller GPIO, eliminating external pull-up resistor. |
| R2/R1 | 21 (typ.) - ensures stable turn-off by providing 21× stronger emitter shunt than base pull-up, suppressing leakage-induced false triggering. |
| VCE(sat) | ≤100 mV at IC = 5 mA - minimizes power loss and voltage drop in active-switching mode. |
| hFE | ≥100 at VCE = 5 V, IC = 10 mA - guarantees robust saturation with standard logic-level base drive. |
| fT | 230 MHz - enables use in high-speed digital switching up to ~10–20 MHz edge rates without degradation. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, FR4-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connects to logic signal source; internal R1 pulls this node toward base, enabling direct MCU GPIO drive without external resistor. |
| 2 | GND (emitter) | Emitter reference and return path; tied to system ground; forms common node for R2 shunt to base. |
| 3 | Output (collector) | Switched output node; sinks load current to ground when active; compatible with open-collector logic interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 + R2 bias network | Eliminates 2 external resistors per switch, reducing PCB area and assembly cost in multi-channel digital I/O designs. |
| 100 mA continuous output rating | Supports direct drive of status LEDs (2–20 mA), optocoupler inputs (5–10 mA), or small-signal MOSFET gates without buffering. |
| VCE(sat) ≤ 100 mV @ 5 mA | Ensures <1% voltage error in 5 V logic-sensing paths and <0.5% error in 3.3 V systems, preserving noise margin. |
| −65 °C to +150 °C operating range | Validated for use in unheated industrial enclosures, outdoor control panels, and thermally constrained embedded modules. |
| SC-70 footprint compatibility | Enables high-density placement alongside other SOT323 logic and interface devices, simplifying layout and reflow process control. |
Applications
| Industrial Digital Input Interface | Microcontroller GPIO Expander Stage |
|---|---|
|
Use Scenario: Isolating and conditioning 24 V field signals into 3.3/5 V microcontroller inputs in PLC I/O modules. IC Role / Device Role / Timing Role: NPN RET acts as level-shifting, current-limiting, and noise-filtering switch between field-side optocoupler output and MCU pin. Use Value: Built-in R1/R2 eliminates discrete bias network, reducing component count by 2 per channel and improving ESD robustness via controlled base impedance. |
Use Scenario: Driving multiple LED status indicators from limited GPIO resources on low-pin-count MCUs. IC Role / Device Role / Timing Role: Acts as low-side sink switch, converting high-Z MCU output into a defined 100 mA-capable current path to ground. Use Value: Guaranteed VCE(sat) ≤100 mV ensures LED forward voltage remains stable across temperature, preserving brightness consistency. |
| BC847 Replacement in Logic Gates | Low-Power Load Switching |
|
Use Scenario: Replacing discrete BC847 + two bias resistors in Schmitt-trigger input buffers or NAND/NOR gate implementations. IC Role / Device Role / Timing Role: Provides identical switching function with fixed hFE and threshold behavior, removing resistor tolerance sensitivity. Use Value: R2/R1 = 21 ratio ensures consistent VI(on)/VI(off) hysteresis margins across production lots, improving batch-to-batch timing predictability. |
Use Scenario: Enabling/disabling sensor bias rails or analog front-end sections in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Functions as digitally controlled power switch for sub-100 mA analog subsystems, minimizing quiescent current in sleep mode. Use Value: ICEO ≤5 µA at 150 °C ensures <1 µA leakage in always-on monitoring paths, extending battery life in maintenance-free 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 |
|---|---|---|---|
| PDTC143EU,115 | R1 = 4.7 kΩ, R2 = 47 kΩ → higher input impedance, lower base current draw. | Better suited for 1.8 V/2.5 V logic drive; less suitable for 3.3 V with marginal noise margin. | Select when driving from ultra-low-power MCUs with weak output drive or when minimizing input loading is critical. |
| BC847B,215 | Discrete NPN BJT; requires external 10 kΩ + 47 kΩ bias network; no integrated R2 shunt. | Higher design flexibility but increases BOM count, layout area, and sensitivity to resistor tolerance drift. | Choose only when custom bias ratios or thermal derating beyond RET specs are required. |
Compared with PDTC143EU and BC847B, PDTC123JU offers optimal balance of 3.3 V logic compatibility, guaranteed turn-off via R2 shunt, and minimal footprint - making it ideal for cost-sensitive, high-volume industrial digital I/O where reliability and repeatability outweigh configurability.
Availability
PDTC123JU is available at Aetrix Electronics and suitable for industrial digital I/O modules, microcontroller peripheral interfaces, LED driver stages, and low-power load switching applications requiring stable component supply and long-term manufacturability.
Supply support for PDTC123JU 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 specializing in high-performance, energy-efficient logic, discrete, and power MOSFET solutions for automotive, industrial, and consumer markets.
PDTC123JU belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to replace discrete BJT + resistor combinations in digital switching applications while improving board-level reliability and reducing assembly cost.
FAQ
What is the maximum safe operating voltage for PDTC123JU?
The absolute maximum collector-emitter voltage (VCEO) is 50 V with the base open. Operation above this value risks permanent breakdown. For reliable long-term use, design with ≤40 V across collector-emitter under all conditions including transients and load dump events.
Can PDTC123JU be used with 1.8 V logic inputs?
No - its VI(on) is specified at 0.75 V (min) and 1.1 V (max) at IC = 5 mA, meaning 1.8 V logic may not guarantee full saturation. For 1.8 V systems, PDTC143EU (higher R1) or PDTC114EU (lower VI(on)) are better matched alternatives.
How does the built-in R2 resistor improve noise immunity?
R2 provides a defined base-to-emitter shunt path (47 kΩ), lowering the effective input impedance during off-state and preventing stray coupling or leakage currents from inadvertently turning on the transistor - a key advantage over discrete BJTs without base pull-down.
Is PDTC123JU automotive-qualified?
No - per Nexperia's revision history (v.8, April 2023), this device is explicitly marked "non-automotive qualified" and lacks AEC-Q101 stress testing. For automotive applications, select the -Q variant (e.g., PDTC123JU-Q) or consult Nexperia's qualified RET portfolio.
PDTC123JU,115 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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 10V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC123JU,115 FAQ
1.How can I place an order for PDTC123JU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC123JU,115 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 PDTC123JU,115 reliable?
The price and inventory of PDTC123JU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC123JU,115 is usually 5 days.
3.What payment methods are accepted for PDTC123JU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC123JU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC123JU,115?
PDTC123JU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC123JU,115 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 PDTC123JU,115?
For technical support, including PDTC123JU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC123JU,115 requirements.
6.How does Aetrix verify that PDTC123JU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC123JU,115 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 PDTC123JU,115 meets industry standards.
7.What is the process for return or replacement of PDTC123JU,115?
All PDTC123JU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC123JU,115, 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 PDTC123JU,115 part is unused and in its original packaging.
Return procedure for PDTC123JU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC123JU,115 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
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DDTD113ZC-7-F
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DRDNB16W-7
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PDTC114ET,215
Nexperia USA Inc.
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PDTC143ZT,215
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PDTC143ET,215
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PDTC143XT,215
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MMUN2211LT1G
onsemi
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