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Nexperia USA Inc. NHDTC144EUX
- Part No.:
- NHDTC144EUX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
NHDTC144EUX.pdf
- Description:
- TRANS PREBIAS NPN 80V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:26,887
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Product details
Overview
NHDTC144EUX from Nexperia is an 80 V, 100 mA NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, integrating 47 kΩ input and 47 kΩ base-emitter bias resistors. It functions as a single-chip digital switch for IC input control and load switching, with VCEO = 80 V, IO = 100 mA, and VI(on) = 5 V at IC = 10 mA - deployed in cost-sensitive industrial control interfaces.
For engineers reviewing the NHDTC144EUX datasheet, NHDTC144EUX pinout, NHDTC144EUX application, or NHDTC144EUX equivalent, this part serves as a drop-in replacement for BC846-series transistors in low-power digital logic interfacing, offering built-in resistor matching, reduced PCB footprint, and simplified drive-level design without external bias networks.
Technical Context
This RET integrates a monolithic NPN transistor with two precision-matched on-die resistors (R1 = R2 = 47 kΩ), enabling direct TTL/CMOS-compatible switching without external base resistors. Its internal resistor ratio (R2/R1 = 1.0) ensures stable saturation behavior across temperature.
It operates with VCE(sat) ≤ 100 mV at IC = 10 mA / IB = 0.5 mA and supports off-state input voltage up to +80 V, making it suitable for robust digital signal conditioning in 24 V industrial I/O modules and microcontroller GPIO protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Enables safe operation in 24–48 V industrial bus environments without external clamping. |
| IO | 100 mA - Supports direct driving of small relays, LEDs, or logic inputs without buffer stages. |
| R1 / R2 | 47 kΩ each - Eliminates need for discrete base resistors; simplifies layout and reduces BOM count by one component. |
| VI(on) | 5 V (max) at IC = 10 mA - Compatible with standard 5 V CMOS/TTL logic high levels for reliable turn-on. |
| VI(off) | 1.15 V (typ) - Ensures clean cutoff under noisy 3.3 V logic conditions, preventing false triggering. |
| hFE | 100 (min) at VCE = 5 V, IC = 10 mA - Provides sufficient current gain margin for predictable saturation in digital switching. |
| fT | 170 MHz - Supports fast edge transitions in pulse-width modulated (PWM) enable signals up to ~10 MHz. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: ultra-compact 3-pin footprint (1.3 × 1.8 mm), optimized for high-density PCBs and reflow/wave soldering per IPC-7351B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Internal connection to R1; accepts logic-level drive directly - no external pull-up or series resistor required. |
| 2 | GND (emitter) | Emitter tied to ground reference; provides return path for both bias and output current. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode or relay coil) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Matched R1 = R2 = 47 kΩ eliminates discrete resistor placement, reducing pick-and-place steps and layout risk. |
| High VCEO rating | 80 V withstand enables use in 48 V automotive body electronics and industrial PLC I/O without derating. |
| Low VCE(sat) | ≤100 mV at rated current minimizes power loss (≤1 mW at 10 mA), critical for thermally constrained modules. |
| Thermal resistance | Rth(j-a) = 397 K/W (4-layer PCB) allows >75 °C ambient operation with <100 mW dissipation. |
| Standard marking | "5S%" code enables automated optical inspection (AOI) and traceability in high-volume SMT lines. |
Applications
| Industrial Digital I/O | Microcontroller GPIO Protection |
|---|---|
Use Scenario: Isolating 24 V field sensor signals into 3.3 V microcontroller inputs via level-shifting interface. IC Role / Device Role / Timing Role: Digital switch translating industrial voltage levels while providing ESD-tolerant input buffering. Use Value: Eliminates need for separate voltage divider and Schmitt trigger, reducing component count by ≥3 parts per channel. |
Use Scenario: Driving external LED indicators or small solenoids directly from MCU GPIO pins. IC Role / Device Role / Timing Role: Current-amplifying interface that absorbs GPIO leakage and prevents overcurrent stress during startup. Use Value: Guarantees VCE(sat) ≤ 100 mV even at 10 mA, preserving GPIO voltage margins and enabling deterministic timing. |
| PLC Input Module | Cost-Optimized Logic Interface |
Use Scenario: Implementing 16-channel dry-contact input stage in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Discrete input conditioner converting mechanical switch closures into clean logic signals. Use Value: 47 kΩ internal resistors match typical PLC pull-up values, eliminating 16 external resistors and saving 22 mm² PCB area. |
Use Scenario: Replacing BC846B in consumer appliance control boards where space and BOM cost are critical. IC Role / Device Role / Timing Role: Drop-in digital switch with identical pinout and enhanced voltage tolerance. Use Value: Maintains functional compatibility while raising max operating voltage from 65 V to 80 V - extending product lifetime in brownout-prone grids. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN digital switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC846B,115 | No integrated resistors; requires external 10 kΩ base resistor for 5 V drive; VCEO = 65 V. | Higher board area and assembly cost; lower voltage margin limits use in 48 V systems. | Select when legacy design reuse or fine-tuned bias adjustment is required. |
| NHDTC124EUX | R1 = R2 = 22 kΩ; lower VI(on) (3 V typ); same package and pinout. | Better suited for 3.3 V logic domains; higher base current draw may increase MCU I/O loading. | Select for 3.3 V systems needing faster turn-on and tighter VI(on) tolerance. |
Availability
NHDTC144EUX is available at Aetrix Electronics and suitable for industrial digital I/O modules, microcontroller peripheral interfaces, and PLC input conditioning requiring stable component supply, long-term lifecycle support, and AEC-Q101-aligned reliability (non-automotive revision).
Supply support for NHDTC144EUX 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 focused on high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.
NHDTC144EUX belongs to the NHDTCxx4EU resistor-equipped transistor family, designed specifically to reduce bill-of-materials complexity and improve yield in cost-sensitive digital interface applications across industrial automation and smart appliances.
FAQ
What is the maximum continuous collector current for NHDTC144EUX?
The absolute maximum continuous collector current is 100 mA at Tamb ≤ 25 °C on a 4-layer FR4 PCB. Derating applies above 25 °C per Fig. 1: at 75 °C ambient, max IO drops to ~65 mA due to thermal limits (Ptot = 315 mW).
Does NHDTC144EUX retain AEC-Q101 qualification?
No. Per Revision History (Table 10), NHDTC144EUX was removed from AEC-Q101 qualification in Rev. 2 (October 2025). For automotive-grade equivalents, Nexperia recommends the -Q suffix variants such as NHDTC144EU-Q.
Can NHDTC144EUX replace BC846B in existing designs without layout changes?
Yes - it uses identical SOT323 (SC-70) package and pinout (1=base, 2=emitter, 3=collector). However, its 47 kΩ internal resistors raise VI(on) to 5 V, so verify that driving logic meets this threshold; no external resistor removal is needed.
What is the thermal resistance from junction to solder point (Rth(j-sp)) for NHDTC144EUX?
Rth(j-sp) is 150 K/W when mounted on a standard FR4 PCB with tin-plated pads and 4-layer copper, per Table 7. This value enables accurate thermal modeling of localized heating at the solder joint during pulsed operation.
NHDTC144EUX 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):
- 80 V
- Resistor - Base (R1):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 100nA
- Frequency - Transition:
- 170 MHz
- Power - Max:
- 235 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
NHDTC144EUX FAQ
1.How can I place an order for NHDTC144EUX through Aetrix?
Please submit a Request for Quotation (RFQ) for NHDTC144EUX 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 NHDTC144EUX reliable?
The price and inventory of NHDTC144EUX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NHDTC144EUX is usually 5 days.
3.What payment methods are accepted for NHDTC144EUX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NHDTC144EUX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NHDTC144EUX?
NHDTC144EUX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NHDTC144EUX 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 NHDTC144EUX?
For technical support, including NHDTC144EUX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NHDTC144EUX requirements.
6.How does Aetrix verify that NHDTC144EUX is sourced from the original manufacturer or authorized distributors?
All NHDTC144EUX 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 NHDTC144EUX meets industry standards.
7.What is the process for return or replacement of NHDTC144EUX?
All NHDTC144EUX units undergo pre-shipment inspection (PSI). If there is an issue with NHDTC144EUX, 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 NHDTC144EUX part is unused and in its original packaging.
Return procedure for NHDTC144EUX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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