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Nexperia USA Inc. PDTC144ET,215
- Part No.:
- PDTC144ET,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC144ET,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:20,566
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Product details
Overview
PDTC144ET from Nexperia is an NPN resistor-equipped transistor (RET) in SOT23 package, designed for digital switching with 50 V VCEO, 100 mA IO, and integrated bias resistors R1 = R2 = 47 kΩ. It replaces discrete base-resistor transistor configurations in industrial control inputs and load-switching circuits.
For engineers reviewing the PDTC144ET datasheet, PDTC144ET pinout, PDTC144ET application, or PDTC144ET equivalent, this part serves as a drop-in alternative to BC847-based digital interface designs-offering simplified layout, reduced BOM count, and consistent input threshold behavior across temperature.
Technical Context
This RET integrates a monolithic NPN transistor with two precision silicon-based bias resistors on-die: R1 connects base to input, R2 shunts base to emitter. The 1:1 R2/R1 ratio enables predictable turn-on at VI(on) ≈ 1.6 V (typ) and reliable turn-off at VI(off) ≈ 1.2 V (typ), eliminating external resistor selection.
It operates within a junction temperature range of –65 °C to 150 °C, with thermal resistance Rth(j-a) = 500 K/W on standard FR4 PCB. Its fT = 230 MHz (typ) supports high-speed digital switching up to ~10 MHz edge rates while maintaining saturation voltage ≤150 mV at IC = 10 mA/IB = 0.5 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 24 V industrial bus interfacing with margin. |
| IO | 100 mA - Continuous output current capability; sufficient for driving LED indicators, small relays, or logic inputs. |
| R1 / R2 | 47 kΩ / 47 kΩ - Matched on-die bias resistors; eliminates external component placement and tolerance stack-up. |
| VCE(sat) | ≤150 mV @ IC = 10 mA, IB = 0.5 mA - Low saturation voltage reduces power loss and heat generation in switching mode. |
| hFE | ≥80 @ VCE = 5 V, IC = 5 mA - Guaranteed DC current gain ensures reliable saturation under defined drive conditions. |
| fT | 230 MHz - Transition frequency of internal transistor; enables clean digital edge response without ringing in <10 ns applications. |
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 height. Standard footprint compatible with reflow and wave soldering per Nexperia's sot023_fr/sot023_fw guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input (base node) | Connected internally to R1; accepts TTL/CMOS-compatible logic-level signals (VI(on) ≈ 1.6 V, VI(off) ≈ 1.2 V). |
| 2 (GND) | Ground (emitter node) | Emitter tied directly to PCB ground plane; provides low-impedance return path and defines reference for input/output voltages. |
| 3 (O) | Output (collector node) | Switches loads connected between VCC and collector; supports sink-current operation up to 100 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in matched bias resistors | R1 = R2 = 47 kΩ ±24% (33–61 kΩ); eliminates manual resistor selection, placement, and solder joint reliability risk. |
| Digital switching optimization | VI(on)/VI(off) separation >0.4 V across –40 °C to +100 °C; ensures noise-immune logic-level interpretation in noisy industrial environments. |
| Thermal robustness | Rated Tj = 150 °C with Rth(j-a) = 500 K/W; sustains continuous 100 mA operation on standard FR4 with minimal heatsinking. |
| BC847 series replacement | Pin-compatible with BC847B in SOT23; reduces bill-of-materials by consolidating transistor + two 47 kΩ resistors into single device. |
Applications
| Industrial Digital Input Interface | LED Indicator Driver |
|---|---|
|
Use Scenario: Isolating and conditioning 24 V PLC field inputs into 3.3 V/5 V microcontroller GPIO pins. IC Role / Device Role / Timing Role: Level-shifting switch that sinks current from optocoupler or pull-up network into MCU input. Use Value: Eliminates need for external base resistor and reduces PCB area by >2.5 mm² versus discrete BC847 + resistors. |
Use Scenario: Driving status LEDs on HMI panels or equipment front-panels with 5 V or 3.3 V logic control. IC Role / Device Role / Timing Role: Low-side current sink switch enabling fast on/off transitions without external current-limiting resistor calculation. Use Value: Ensures consistent LED brightness across supply voltage variation due to fixed VI(on) threshold and low VCE(sat). |
| Microcontroller GPIO Load Switch | Relay Coil Driver (Low-Power) |
|
Use Scenario: Enabling/disabling peripheral modules (e.g., sensors, transceivers) via MCU GPIO pins with minimal quiescent current. IC Role / Device Role / Timing Role: Digital enable switch controlling VCC path to downstream circuitry using collector-as-switch configuration. Use Value: Reduces standby current to <100 nA (ICEO) while supporting 100 mA peak load without external flyback protection. |
Use Scenario: Driving 5 V or 12 V relay coils rated ≤100 mA in automation controllers and building management systems. IC Role / Device Role / Timing Role: Saturated switch providing low-loss coil energization and controlled turn-off with inherent base discharge path (R2). Use Value: Prevents voltage spikes during coil de-energization without requiring external freewheeling diode in many cases. |
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 |
|---|---|---|---|
| PDTC124ET | R1 = 22 kΩ, R2 = 47 kΩ (R2/R1 ≈ 2.1); higher input current required for turn-on. | Better suited for 5 V CMOS drive where higher base current improves noise margin. | Select when VI(on) >2.0 V is acceptable and stronger input drive is available. |
| BC847B | No integrated resistors; requires external RB and RBE; hFE = 200–450 (wider spread). | Offers higher gain flexibility but increases design complexity and test points. | Choose only if variable gain or custom biasing is required; otherwise PDTC144ET reduces validation effort. |
Compared with PDTC124ET, PDTC144ET delivers tighter input threshold control for 3.3 V logic; compared with BC847B, it trades gain variability for guaranteed bias stability and 33% lower assembly cost in high-volume SMT lines.
Availability
PDTC144ET is available at Aetrix Electronics and suitable for industrial digital input interfaces, LED indicator drivers, microcontroller GPIO load switching, and low-power relay coil driving requiring stable component supply and long-term production continuity.
Supply support for PDTC144ET 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 essential semiconductors for automotive, industrial, and consumer markets, with manufacturing rooted in process excellence and quality-first culture.
PDTC144ET belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to simplify digital interface design in cost-sensitive industrial electronics by integrating precision bias networks onto standard transistor die.
FAQ
What is the maximum operating temperature for PDTC144ET?
The PDTC144ET has a maximum junction temperature (Tj) of 150 °C and an ambient operating range of –65 °C to +150 °C. Derated power dissipation begins above 25 °C ambient, reaching zero at 150 °C per the 500 K/W thermal resistance curve. Operation within these limits ensures full specification compliance.
Can PDTC144ET replace BC847B in existing PCB layouts?
Yes-PDTC144ET uses the same SOT23 footprint and pinout (1=base, 2=emitter, 3=collector) as BC847B. However, because PDTC144ET integrates R1 and R2, external base resistors must be removed from the layout to avoid double-biasing and unintended conduction.
Does PDTC144ET require a flyback diode when driving inductive loads?
While the internal R2 resistor provides partial base discharge, PDTC144ET does not include integrated flyback protection. For relay coils or other inductive loads, an external flyback diode across the load is recommended to prevent VCE overshoot beyond 50 V and ensure long-term reliability.
How does the R2/R1 ratio affect switching behavior?
With R2/R1 = 1.0 (typ), PDTC144ET provides symmetrical input impedance and balanced turn-on/turn-off thresholds-resulting in VI(on) ≈ 1.6 V and VI(off) ≈ 1.2 V. This ratio minimizes input hysteresis and supports clean logic-level interpretation without external Schmitt triggers.
PDTC144ET,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):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 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
PDTC144ET,215 FAQ
1.How can I place an order for PDTC144ET,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144ET,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 PDTC144ET,215 reliable?
The price and inventory of PDTC144ET,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144ET,215 is usually 5 days.
3.What payment methods are accepted for PDTC144ET,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144ET,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144ET,215?
PDTC144ET,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144ET,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 PDTC144ET,215?
For technical support, including PDTC144ET,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144ET,215 requirements.
6.How does Aetrix verify that PDTC144ET,215 is sourced from the original manufacturer or authorized distributors?
All PDTC144ET,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 PDTC144ET,215 meets industry standards.
7.What is the process for return or replacement of PDTC144ET,215?
All PDTC144ET,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144ET,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 PDTC144ET,215 part is unused and in its original packaging.
Return procedure for PDTC144ET,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144ET,215 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
Rohm Semiconductor
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DDTD113ZC-7-F
Diodes Incorporated
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DRDNB16W-7
Diodes Incorporated
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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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PDTC144ET,215
Nexperia USA Inc.
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PDTC124ET,215
Nexperia USA Inc.
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