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Product Detailed Parameters
- Description：TRANS NPN 50V 4.7/47K SC-75
- Series：-
- Mfr：onsemi
- Package：Bulk
- Resistors Included：-
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Resistor - Base (R1)：-
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- Frequency - Transition：-
- Power - Max：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The DTC143ZET1 is an NPN silicon Bias Resistor Transistor (BRT) from the DTC114EET1 series, manufactured by onsemi. It integrates a single transistor with a monolithic bias resistor network consisting of a series base resistor (R1 = 4.7 kΩ) and a base-emitter resistor (R2 = 47 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 when purchasing. The 'G' suffix indicates a Pb-Free package variant (DTC143ZET1G), whereas the standard version lacks this designation. Confirm the required marking code '8K' matches the intended revision. Ensure the tape and reel quantity aligns with production needs, as standard shipping is typically in reels of 3000 units.
Selection Notes
Select the DTC143ZET1 when a specific ratio of base-to-emitter resistance is required, defined here by R1=4.7kΩ and R2=47kΩ. This configuration differs from other series members like the DTC143EET1 which uses equal resistors. Verify that the 50V breakdown voltage and 100mA current rating meet the target application's load requirements before finalizing the component choice.
Part Context
This component belongs to the DTC114EET1 series of NPN Silicon Surface Mount Transistors with Monolithic Bias Resistor Networks. The series includes various combinations of internal resistors to suit different biasing needs. All devices in this family share the same SC-75/SOT-416 package style and general electrical characteristics, differing primarily in their internal resistor values and corresponding device marking codes.
Replacement Considerations
Direct substitutes within the same series include the DTC143ZET1G (Pb-Free version). Other variants such as DTC143EET1 or DTC123JET1 may serve as functional replacements if their specific resistor ratios (e.g., 4.7k/4.7k or 2.2k/47k) are acceptable for the circuit design.
