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HomeProductsDiscrete Semiconductor ProductsTransistors - Bipolar (BJT) - Single, Pre-BiasedDTA114YKAT146
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DTA114YKAT146 - Rohm Semiconductor

Manufacturer Part Number
DTA114YKAT146
Manufacturer
LAPIS Technology
Allelco Part Number
32D-DTA114YKAT146
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
808,000 pcs available, New & Original
Parts Description
TRANS PREBIAS PNP 200MW SMT3
Package
SMT3
Data sheet
DTA114YKAT146.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 808000
  • Unit Price: $0.024
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
10+ $0.024 $0.24
100+ $0.02 $2.00
300+ $0.018 $5.40
3000+ $0.014 $42.00
6000+ $0.013 $78.00
9000+ $0.012 $108.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

DTA114YKAT146 Tech Specifications
Rohm Semiconductor - DTA114YKAT146 technical specifications, attributes, parameters and parts with similar specifications to Rohm Semiconductor - DTA114YKAT146

Product Attribute Attribute Value
Manufacturer LAPIS Technology
Voltage - Collector Emitter Breakdown (Max) 50 V
Vce Saturation (Max) @ Ib, Ic 300mV @ 250µA, 5mA
Transistor Type PNP - Pre-Biased
Supplier Device Package SMT3
Series -
Resistor - Emitter Base (R2) 47 kOhms
Resistor - Base (R1) 10 kOhms
Power - Max 200 mW
Product Attribute Attribute Value
Package / Case TO-236-3, SC-59, SOT-23-3
Package Tape & Reel (TR)
Mounting Type Surface Mount
Frequency - Transition 250 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce 68 @ 5mA, 5V
Current - Collector Cutoff (Max) 500nA
Current - Collector (Ic) (Max) 100 mA
Base Product Number DTA114

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the DTA114YKAT146 compare to discrete transistor configurations in terms of board space and design complexity for low-power signal conditioning applications?
The DTA114YKAT146 integrates base and emitter bias resistors directly into a single SOT-23 package, eliminating the need for external components that would otherwise require additional PCB real estate and assembly steps. In typical discrete implementations, achieving equivalent biasing requires two precision resistors—often 10 kΩ and 47 kΩ as specified—plus careful layout to avoid noise coupling. This integration reduces component count by approximately 50% compared to a bare NPN pair with discrete biasing, while maintaining consistent performance across temperature variations due to matched internal resistor characteristics.
What is the impact of the 300 mV maximum Vce(sat) at Ib = 250 µA and Ic = 5 mA on power efficiency in battery-operated sensor interface circuits using the DTA114YKAT146?
At full rated collector current, the DTA114YKAT146 exhibits a saturation voltage below 300 mV, resulting in power dissipation under 150 µW when conducting 5 mA. This low conduction loss minimizes wasted energy in standby or intermittent-use scenarios common in IoT edge nodes, extending battery life by reducing thermal load and quiescent power draw relative to higher-gain alternatives that may require more aggressive drive currents.
Can the DTA114YKAT146 be used interchangeably with standard PNP transistors like the 2SA1033 in high-frequency switching applications above 10 MHz?
No, the DTA114YKAT146 is optimized for prebiased linear amplification rather than fast switching due to its relatively modest transition frequency of 250 MHz and soft turn-off characteristics. Devices such as the 2SA1033 offer superior speed and lower storage time but lack integrated biasing. Substituting the DTA114YKAT146 in a high-speed switch could lead to delayed response times and increased harmonic distortion, making it unsuitable despite similar voltage and current ratings.
Given the DC current gain (hFE) minimum of 68 at Ic = 5 mA and Vce = 5 V, what is the expected base current draw when driving a 50 mA load with the DTA114YKAT146?
With hFE(min) = 68 at 5 mA, the worst-case base current required to sustain 50 mA collector current is approximately 735 µA. However, due to the internal base resistor (R1 = 10 kΩ), the actual base drive depends on the input source impedance and desired operating point. In practice, this configuration enables moderate-gain amplification without external bias networks, though precise control requires consideration of resistor divider loading effects on upstream circuitry.
Is the DTA114YKAT146 suitable for use in automotive-grade environments requiring AEC-Q101 qualification?
While the DTA114YKAT146 is RoHS3 compliant and manufactured by Rohm Semiconductor—a supplier known for automotive-qualified processes—it is not explicitly listed as AEC-Q101 qualified. For production applications in automotive systems, verification against component-specific qualification data from the manufacturer is essential, as environmental stress testing and reliability screening are critical beyond standard industrial specifications.
How do the internal resistor values (R1 = 10 kΩ, R2 = 47 kΩ) influence the turn-on threshold and noise immunity when interfacing a microcontroller GPIO pin to an analog sensor via the DTA114YKAT146?
The 10 kΩ base resistor limits peak base current during startup, providing inherent protection against transient overvoltage, while the 47 kΩ emitter-to-base resistor sets a stable bias point that improves thermal stability and reduces sensitivity to supply ripple. This network effectively creates a pseudo-Zener-like stabilization around the emitter junction, enhancing noise rejection in unshielded sensor lines but introducing a slight offset voltage due to resistive division.
What precautions should be taken when replacing the DTA114YKAT146 in existing designs that previously used surface-mount PNP transistors without prebiased features?
Existing layouts assuming discrete components must be reviewed for parasitic inductance introduced by additional traces or vias. The SMT3 package’s compact footprint simplifies routing, but designers should verify that the absence of external resistors does not compromise ESD robustness or long-term drift performance. Additionally, thermal modeling should account for the reduced junction-to-air resistance compared to larger packages, especially in densely populated PCBs where airflow is limited.
Why might the DTA114YKAT146 exhibit different gain behavior across temperature ranges, and how does this affect closed-loop stability in feedback amplifier stages?
The hFE parameter varies inversely with temperature due to intrinsic carrier concentration changes in silicon. At elevated temperatures, the effective gain can drop below the specified minimum of 68, potentially leading to insufficient loop margin in feedback networks. Designers relying on the device for precision gain staging should either derate the circuit, incorporate temperature compensation, or select alternative architectures with better-matched transistor pairs if tight tolerance is required.
Can the DTA114YKAT146 operate reliably in continuous conduction mode exceeding 200 mW power dissipation?
No, the absolute maximum power rating is 200 mW, but sustained operation near this limit requires careful thermal management. In most surface-mount applications without heatsinking, continuous dissipation above 100 mW leads to significant self-heating, which degrades hFE and increases Vce(sat). Therefore, even brief excursions above 150 mW should be avoided unless ambient cooling or short duty cycles are assured.
How does the moisture sensitivity level (MSL = 1) benefit manufacturing workflows involving the DTA114YKAT146?
MSL 1 indicates unlimited shelf life under normal storage conditions, eliminating the need for baking before reflow soldering. This simplifies inventory handling and reduces process steps in high-volume assembly lines, particularly advantageous for contract manufacturers managing multiple RoHS-compliant components where humidity control infrastructure is minimal.
What are the implications of the ECCN code EAR99 for international distribution of products containing the DTA114YKAT146?
With an Export Control Classification Number (ECCN) of EAR99, the DTA114YKAT146 falls under U.S. Export Administration Regulations (EAR) Category A and is generally not subject to license requirements for most destinations. However, exporters must still comply with local import regulations, and end-use restrictions apply in certain jurisdictions, necessitating due diligence during global supply chain planning.
How does the transition frequency of 250 MHz limit or enable the DTA114YKAT146’s use in RF front-end buffering versus digital signal processing paths?
While sufficient for many audio and intermediate-frequency buffering tasks up to a few tens of MHz, the 250 MHz cutoff restricts application in true RF amplification or high-speed digital isolation beyond 50–70 MHz. In digital paths, capacitive loading from the integrated resistors further attenuates signals approaching this bandwidth, making it more appropriate for sub-MHz to low-MHz analog signal routing rather than broadband transmission.
Should the DTA114YKAT146 be considered for use in LED driver circuits requiring constant-current sinking above 100 mA?
Although the device supports up to 100 mA collector current, its relatively high Vce(sat) at high currents—combined with limited thermal dissipation in SOT-23 packaging—makes it marginal for sustained constant-current sinking above 50 mA without external heatsinking. For robust LED drivers, discrete solutions with Darlington pairs or dedicated ICs offer better efficiency and reliability under thermal stress.
What role does the Base Product Number DTA114 play in cross-referencing and legacy design migration involving the DTA114YKAT146?
The DTA114 prefix identifies a family of prebiased PNP transistors with similar electrical profiles but varying resistor ratios and packaging variants. Engineers migrating legacy designs should confirm not only part number equivalence but also resistor values and pinouts, as minor differences between submodels can affect bias points and noise performance, potentially altering system calibration if not validated experimentally.

Parts with Similar Specifications

The three parts on the right have similar specifications to Rohm Semiconductor DTA114YKAT146

Product Attribute DTA114YET1G DTA114YET1 DTA114YMFHAT2L DTA114YMT2L
Part Number DTA114YET1G DTA114YET1 DTA114YMFHAT2L DTA114YMT2L
Manufacturer onsemi onsemi Rohm Semiconductor Rohm Semiconductor
Current - Collector (Ic) (Max) - - - -
Frequency - Transition - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Mounting Type - Surface Mount Through Hole Surface Mount
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Power - Max - - - -
Current - Collector Cutoff (Max) - - - -
Resistor - Emitter Base (R2) - - - -
Series - - - -
DC Current Gain (hFE) (Min) @ Ic, Vce - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Voltage - Collector Emitter Breakdown (Max) - - - -
Resistor - Base (R1) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Transistor Type - - - -
Vce Saturation (Max) @ Ib, Ic - - - -

DTA114YKAT146 Datasheet PDF

Download DTA114YKAT146 pdf datasheets and Rohm Semiconductor documentation for DTA114YKAT146 - Rohm Semiconductor.

Datasheets
SMT3 T146 Taping Spec.pdf
Other Related Documents
SMT3 DTR Reliability Test.pdf SMT3 Inner Structure.pdf SMT3 Part Marking.pdf Transistor, MOSFET Flammability.pdf
Environmental Information
DTA114YKA ESD Data.pdf SMT3 Constitution Material List.pdf Transistor Whisker Info.pdf Transistor, MOSFET Level 1 MSL.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Region Country Logistic Time(Day)
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Brazil 7
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United Kingdom 4
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
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0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Rohm Semiconductor

DTA114YKAT146

Rohm Semiconductor
32D-DTA114YKAT146

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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