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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V 0.1A SPT
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Box (TB)
- Resistors Included：R1 Only
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：4.7 kOhms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 250µA, 5mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：250 MHz
- Power - Max：300 mW
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：SC-72 Formed Leads
- Supplier Device Package：SPT
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Overview
The DTC143TSATP is a single NPN digital transistor manufactured by Rohm Semiconductor, featuring built-in bias resistors. It operates with a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA. The device incorporates thin-film resistors for complete isolation, allowing negative input biasing. Key electrical parameters include a DC current transfer ratio (hFE) minimum of 100 at IC=1mA and VCE=5V, an input resistance (R1) of 4.7kΩ, and a transition frequency (fT) of 250MHz. Power dissipation is rated at 150mW. The component utilizes the SPT package (EIAJ SC-72), which is a through-hole form with molded leads.
Feature Summary
- Built-in bias resistors enable inverter circuit configuration without external input resistors.
- Thin-film resistor structure provides complete isolation to allow negative input biasing.
- Simplified design process as only on/off conditions require setting.
Applications
- Inverter circuits
- Interface applications
- Driver circuits
Procurement Notes
Verify the specific suffix 'TP' against the manufacturer's official documentation to confirm the packaging type and reel specifications. Confirm RoHS compliance status and ensure the component meets the required environmental standards for the intended application before procurement.
Selection Notes
Select this component when a single NPN digital transistor with a 4.7kΩ base resistor is required. Ensure the design accommodates the 50V collector-emitter voltage rating and 100mA current limit. Verify that the SPT through-hole package fits the PCB layout constraints compared to surface-mount alternatives like SOT-23 or SOT-416.
Part Context
This part belongs to the DTC143 series of digital transistors from Rohm Semiconductor. The series includes various packages such as SOT-23, SOT-416, and SOT-723. The DTC143TSATP specifically denotes the SPT through-hole variant within this family, sharing core electrical characteristics with other series members but differing in physical mounting style.
Replacement Considerations
Direct replacements must match the NPN polarity, 50V/100mA ratings, and 4.7kΩ internal resistor value. Surface-mount equivalents like DTC143TCA (SOT-23) or DTC143XE3TL (SOT-416) may be considered if the PCB allows for re-layout, though pinout configurations differ between packages.
