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DTC143EKAT146 ROHM DTC143EKAT146 is an NPN pre-biased digital transistor with built-in bias resistors (R1=R2=4.7kΩ). Rated for 50V collector-emitter voltage and 100mA collector current, it dissipates 200mW and comes in a surface-mount SMT3 (SOT-346) package.
Mfr Part #:

DTC143EKAT146

Available from 1 distributors
Mfr Name: ROHM Semiconductor
ROHM Semiconductor
ROHM DTC143EKAT146 is an NPN pre-biased digital transistor with built-in bias resistors (R1=R2=4.7kΩ). Rated for 50V collector-emitter voltage and 100mA collector current, it dissipates 200mW and comes in a surface-mount SMT3 (SOT-346) package.
✓ Total Stock: 134,740 pcs
$ Price Range: $0.03 - $0.24

DTC143EKAT146 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
134,740 pcs
On Request
134740 pcs On Request 1 On Request On Request 21+ On Request On Request
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DTC143EKAT146 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Frequency
Mounting Type
Power
Resistor
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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DTC143EKAT146 Description

Short technical summary and product information.

The ROHM DTC143EKAT146 is an NPN pre-biased digital transistor (also known as a bias resistor built-in transistor) from the DTC143E series. It integrates two 4.7kΩ bias resistors (R1 and R2), eliminating the need for external resistors in inverter and interface circuits. This simplifies PCB layout and reduces component count.

 

Key electrical ratings include a maximum collector-emitter voltage (VCEO) of 50V, a maximum collector current of 100mA, and a power dissipation of 200mW. The device offers a typical transition frequency of 250MHz and a minimum DC current gain (hFE) of 30 at 10mA, 5V. It is designed for surface-mount assembly in an SMT3 (SOT-346) package and is supplied in tape and reel packaging with 3000 pieces per reel.

 

Typical applications include inverters, interface circuits, and driver stages where simple on/off control is required. The built-in resistors ensure consistent switching performance and reduce design effort.

DTC143EKAT146 Quick Information

Product Type: Digital Transistor (Bias Resistor Built-in)
Canonical Name: ROHM Semiconductor DTC143EKAT146 NPN Pre-Biased Digital Transistor
Subcategory: NPN Pre-Biased

DTC143EKAT146 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

DTC143EKAT146 Estimated Pricing

Qty Low High
1+ $0.24 $0.24
10+ $0.15 $0.15
100+ $0.09 $0.09
500+ $0.07 $0.07
1,000+ $0.06 $0.06
3,000+ $0.05 $0.05
6,000+ $0.04 $0.04
9,000+ $0.03 $0.03
24,000+ $0.03 $0.03

Estimated market price range - modelled values for guidance only, not live distributor offers.

DTC143EKAT146 Features

  • Built-in bias resistors R1=R2=4.7kΩ.
  • Rated for 50V collector-emitter voltage.
  • Maximum collector current of 100mA.
  • Power dissipation rated at 200mW.
  • Surface-mount SMT3 (SOT-346) package.

DTC143EKAT146 Applications

  • Ideal for inverter circuit designs.
  • Used in interface and driver stages.
  • Simplifies on/off switching control.
  • Reduces external component count.

DTC143EKAT146 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating of the DTC143EKAT146?

The maximum collector-emitter voltage (VCEO) is 50V.

What is the maximum collector current for this transistor?

The maximum collector current (IC) is 100mA.

What package does the DTC143EKAT146 come in?

It is supplied in an SMT3 (SOT-346) surface-mount package.

Does the DTC143EKAT146 have built-in bias resistors?

Yes, it integrates two 4.7kΩ bias resistors (R1 and R2).

What is the power dissipation of the DTC143EKAT146?

The maximum power dissipation is 200mW.

What is the typical transition frequency of this transistor?

The typical transition frequency (ft) is 250MHz at VCE=10V, IE=-5mA, f=100MHz.

What is the minimum DC current gain (hFE) of the DTC143EKAT146?

The minimum hFE is 30 at Ic=10mA, Vce=5V.

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