Model No: DTC143EKAT146
Rohm Semiconductor DTC143EKAT146
Manufacturer: Rohm Semiconductor
SEMICON NO.: DTC143EKAT146
Package: SOT-346
Stock: In stock
Description: Pre-Biased BJT NPN 50V 100mA 250MHz 200mW
SEMICON NO.: DTC143EKAT146
Package: SOT-346
Stock: In stock
Description: Pre-Biased BJT NPN 50V 100mA 250MHz 200mW
Quantity :
| Mfr | Rohm Semiconductor |
| Device Type | NPN Digital Transistor (Pre-Biased / Bias Resistor Built-in) |
| Configuration | Potential Divider Type |
| Collector-Emitter Voltage (Max) | 50 V |
| Collector Current (Max) | 100 mA |
| Power Dissipation (Max) | 200 mW |
| Base Resistor (R1) | 4.7 kΩ |
| Emitter-Base Resistor (R2) | 4.7 kΩ |
| Resistor Ratio (R1/R2) | 1 |
| DC Current Gain (Min) | 30 |
| Collector-Emitter Saturation Voltage (Max) | 300 mV |
| Collector Cutoff Current (Max) | 500 nA |
| Transition Frequency | 250 MHz |
| Operating Temperature | –55°C to +150°C |
| Package | SOT-346 |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
DTC143EKAT146 - NPN 100mA 50V Digital Transistor (SMT3 / SC-59)
The DTC143EKAT146 is a surface-mount NPN digital transistor (bias-resistor-built-in transistor) from ROHM Semiconductor that integrates two thin-film bias resistors on the die, with R1 = R2 = 4.7 kohm and a resistance ratio of 1. Rated for a 50 V supply and a 100 mA maximum collector current, it offers 200 mW dissipation and a 250 MHz transition frequency in a compact SMT3 (TO-236 / SOT-346 / SC-59) package measuring only 2.8 mm x 2.9 mm. Because the input and emitter-base resistors are built in, an inverter can be configured with no external input resistor, and only the on/off conditions need to be set. The isolated thin-film resistors also permit negative input biasing while nearly eliminating parasitic effects.
The DTC143EKAT146 is a surface-mount NPN digital transistor (bias-resistor-built-in transistor) from ROHM Semiconductor that integrates two thin-film bias resistors on the die, with R1 = R2 = 4.7 kohm and a resistance ratio of 1. Rated for a 50 V supply and a 100 mA maximum collector current, it offers 200 mW dissipation and a 250 MHz transition frequency in a compact SMT3 (TO-236 / SOT-346 / SC-59) package measuring only 2.8 mm x 2.9 mm. Because the input and emitter-base resistors are built in, an inverter can be configured with no external input resistor, and only the on/off conditions need to be set. The isolated thin-film resistors also permit negative input biasing while nearly eliminating parasitic effects.
Highlights and Features
● Single NPN digital transistor with built-in bias resistors, R1 = R2 = 4.7 kohm, ratio R2/R1 = 1.
● Rated 50 V supply voltage and 100 mA maximum collector or output current.
● 200 mW power dissipation and a 250 MHz transition frequency for fast switching.
● Minimum DC current gain hFE of 20, with VI(on) at VO = 0.3 V, IO = 20 mA.
● Input voltage range of -10 V to 30 V, with a low VI(off) threshold.
● Built-in bias resistors allow an inverter with no external input resistor.
● Isolated thin-film resistors permit negative input biasing with almost no parasitic effects.
● Complementary PNP counterpart available as the DTA143E series for complementary stages.
Applications
● Inverter circuits and logic-level signal inversion.
● Interface and driver stages between a microcontroller and a load.
● Digital on/off control of small relays, buzzers, LEDs and indicators.
● Signal switching and level shifting in consumer, communication and computer products.
● Pre-bias transistor stages in power management and industrial control boards.
Frequently Asked Questions
Q: Why use a digital transistor instead of a discrete NPN plus resistors? A: The 4.7 kohm resistors are built in, so an inverter needs no external input resistor and one part replaces three.
Q: What are the key ratings? A: A 50 V supply, 100 mA maximum collector current, 200 mW dissipation and a 250 MHz transition frequency.
Q: What is the resistance ratio and gain? A: R1 = R2 = 4.7 kohm, giving a ratio of 1 and a minimum DC current gain hFE of 20.
Alternative and Equivalent NPN transistor Models
● DTC143EUA - the same NPN 100 mA digital transistor with 4.7 kohm bias resistors in a UMT3 (SC-70) package.
● DTC143EE - the EMT3 (SOT-416) version of the identical device for even smaller footprints.
● DTC143EUB - the UMT3F (SC-85) variant for low-profile layouts.
● DTC143EM - the VMT3 (SC-105AA) member of the family for ultra-dense designs.
● DTA143EKA - the complementary PNP counterpart in the same SMT3 / SC-59 package.
● PDTC143ET (Nexperia) - a cross-vendor 4.7 kohm pre-biased NPN in SOT-23.
● MUN2211 (onsemi) - a bias-resistor NPN digital transistor with comparable 4.7 kohm resistors.
● Single NPN digital transistor with built-in bias resistors, R1 = R2 = 4.7 kohm, ratio R2/R1 = 1.
● Rated 50 V supply voltage and 100 mA maximum collector or output current.
● 200 mW power dissipation and a 250 MHz transition frequency for fast switching.
● Minimum DC current gain hFE of 20, with VI(on) at VO = 0.3 V, IO = 20 mA.
● Input voltage range of -10 V to 30 V, with a low VI(off) threshold.
● Built-in bias resistors allow an inverter with no external input resistor.
● Isolated thin-film resistors permit negative input biasing with almost no parasitic effects.
● Complementary PNP counterpart available as the DTA143E series for complementary stages.
Applications
● Inverter circuits and logic-level signal inversion.
● Interface and driver stages between a microcontroller and a load.
● Digital on/off control of small relays, buzzers, LEDs and indicators.
● Signal switching and level shifting in consumer, communication and computer products.
● Pre-bias transistor stages in power management and industrial control boards.
Frequently Asked Questions
Q: Why use a digital transistor instead of a discrete NPN plus resistors? A: The 4.7 kohm resistors are built in, so an inverter needs no external input resistor and one part replaces three.
Q: What are the key ratings? A: A 50 V supply, 100 mA maximum collector current, 200 mW dissipation and a 250 MHz transition frequency.
Q: What is the resistance ratio and gain? A: R1 = R2 = 4.7 kohm, giving a ratio of 1 and a minimum DC current gain hFE of 20.
Alternative and Equivalent NPN transistor Models
● DTC143EUA - the same NPN 100 mA digital transistor with 4.7 kohm bias resistors in a UMT3 (SC-70) package.
● DTC143EE - the EMT3 (SOT-416) version of the identical device for even smaller footprints.
● DTC143EUB - the UMT3F (SC-85) variant for low-profile layouts.
● DTC143EM - the VMT3 (SC-105AA) member of the family for ultra-dense designs.
● DTA143EKA - the complementary PNP counterpart in the same SMT3 / SC-59 package.
● PDTC143ET (Nexperia) - a cross-vendor 4.7 kohm pre-biased NPN in SOT-23.
● MUN2211 (onsemi) - a bias-resistor NPN digital transistor with comparable 4.7 kohm resistors.
