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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V 0.1A SC75
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Resistors Included：R1 and R2
- 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)：22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：80 @ 5mA, 10V
- Vce Saturation (Max) @ Ib, Ic：250mV @ 300µA, 10mA
- Current - Collector Cutoff (Max)：500nA
- Frequency - Transition：-
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-75, SOT-416
- Supplier Device Package：SC-75, SOT-416
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Overview
The DTC144WET1 is an NPN silicon Bias Resistor Transistor (BRT) from the DTC114EET1 series, manufactured by onsemi. It integrates a single transistor with a monolithic bias network consisting of a series base resistor (R1 = 47 kΩ) and a base-emitter resistor (R2 = 22 kΩ). The device is housed in the SC-75/SOT-416 surface mount package. Key electrical ratings include a collector-base voltage (VCBO) of 50 Vdc, a collector-emitter voltage (VCEO) of 50 Vdc, and a maximum collector current (IC) of 100 mAdc at 25°C ambient temperature.
Feature Summary
- Integrates a single NPN transistor with a monolithic bias resistor network to replace discrete components
- Reduces board space and component count while simplifying circuit design
- SC-75/SOT-416 package supports wave or reflow soldering with modified gull-wing leads to absorb thermal stress
Applications
- Level shifting between logic circuits and higher voltage loads
- Open collector inverter configurations for signal inversion
- Unregulated current source applications
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact resistor values and packaging configuration. Confirm that the procurement channel provides genuine products from Semiconductor Components Industries, LLC (onsemi) to ensure compliance with specified electrical characteristics and reliability standards.
Selection Notes
Select this component when a compact NPN switching solution with integrated biasing is required. The specific R1/R2 ratio of approximately 2.1 suits applications needing defined input impedance and pull-down characteristics. Ensure the operating voltage does not exceed the 50 Vdc breakdown limits and that the thermal dissipation requirements fit within the SC-75 package constraints.
Part Context
This part belongs to the DTC114EET1 series of Bias Resistor Transistors designed to simplify digital circuit designs. The series offers various resistor combinations within the same SC-75/SOT-416 package footprint, allowing designers to maintain consistent board layouts while adjusting biasing parameters for different logic levels or drive requirements.
Replacement Considerations
Compatible substitutes within the same series include DTC144WET1G (Pb-Free version). Other variants like DTC144EET1 share the package but differ in internal resistor values (R1=47k, R2=47k), requiring circuit redesign if used as direct replacements.
