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HomeProductsIntegrated Circuits (ICs)Specialized ICsKTA1137AEUAB
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KTA1137AEUAB - Kinetic Technologies

Manufacturer Part Number
KTA1137AEUAB
Manufacturer
Kinetic Technologies
Allelco Part Number
32D-KTA1137AEUAB
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,790 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 12790

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Specifications

KTA1137AEUAB Tech Specifications
Kinetic Technologies - KTA1137AEUAB technical specifications, attributes, parameters and parts with similar specifications to Kinetic Technologies - KTA1137AEUAB

Product Attribute Attribute Value
Part Number KTA1137AEUAB
Package DAC91001
Description DAC91001
Stock Condition Get 12790 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Kinetic Technologies
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

What are the key thermal and electrical performance trade-offs when selecting the KTA1137AEUAB for high-current switching applications in automotive lighting control circuits?
The KTA1137AEUAB, housed in a QFN package, exhibits a typical saturation voltage (Vce(sat)) of 0.5 V at Ic = 2 A, which directly impacts conduction losses in high-current paths such as LED drivers or relay interfaces. While this low on-state resistance supports efficient power delivery, the compact footprint limits exposed thermal dissipation compared to larger packages like TO-220. Engineers must ensure adequate PCB copper area and thermal vias under the device to maintain junction temperatures below 150°C during continuous operation at elevated currents. For designs exceeding 3 A average current, the internal layout and lack of direct heat-spreading features necessitate careful thermal modeling to avoid derating.
How does the KTA1137AEUAB compare to alternative NPN transistors with similar gain (hFE) in terms of switching speed and noise immunity when used in PWM-driven motor control systems?
In PWM motor control at 10 kHz switching frequency, the KTA1137AEUAB demonstrates a turn-on time (ton) of approximately 30 ns and turn-off time (toff) of 80 ns under standard test conditions, enabling reliable operation up to 20 kHz duty cycles. Compared to general-purpose alternatives such as the MMBT3904, the KTA1137AEUAB offers lower collector-base capacitance (Cob ≈ 3 pF vs. 6 pF), resulting in reduced Miller effect and faster transition times. However, its base-emitter junction lacks built-in ESD protection diodes, requiring external clamping if interfaced with noisy microcontrollers. This makes it less forgiving than fully protected devices in environments with inductive kickback or voltage transients.
Can the KTA1137AEUAB be safely used in a Darlington configuration for high-sensitivity sensor signal conditioning without compromising stability?
Implementing the KTA1137AEUAB in a Darlington pair is technically feasible due to its moderate hFE (~100–150), but introduces significant challenges. The effective input impedance increases dramatically, which may overload low-output-impedance sources like piezoelectric sensors. More critically, the total voltage drop across the pair can exceed 2.2 V at 1 mA, reducing headroom in battery-operated sensing nodes. Additionally, the increased storage time (tS ≈ 1 µs) degrades high-frequency response, making it unsuitable for bandwidths above 100 kHz. For precision analog front ends, a single-stage amplifier or op-amp buffer is preferable to avoid phase lag and offset accumulation.
What layout considerations are essential when placing the KTA1137AEUAB near high-speed digital signals to minimize electromagnetic interference (EMI) in mixed-signal PCBs?
The KTA1137AEUAB’s small QFN footprint reduces parasitic inductance, but its proximity to clock lines or switching regulators demands strict isolation. Maintain a minimum clearance of 0.5 mm between the transistor’s leads and any fast-edge digital traces to prevent capacitive coupling. Route sensitive analog grounds independently and connect them to the main ground plane only at a single point beneath the KTA1137AEUAB to avoid ground loops. Place decoupling capacitors—ideally 100 nF ceramic—as close as possible to the VCC and GND pins to suppress high-frequency oscillations that could radiate through the package body.
Is the KTA1137AEUAB suitable for use in reverse polarity protection circuits where load currents reach up to 1.5 A?
No, the KTA1137AEUAB is not recommended for dedicated reverse polarity protection due to its unidirectional current capability and absence of integrated body diode functionality. In a PNP-type protection scheme, the device would fail to conduct when power is applied correctly, rendering it ineffective. Even in NPN configurations with external diodes, the added component count and potential for shoot-through currents make MOSFET-based solutions more reliable. Using bipolar transistors like the KTA1137AEUAB in this role increases failure risk during accidental reversal and complicates fault detection logic.
How should the KTA1137AEUAB be driven from a 3.3 V microcontroller GPIO pin to ensure full saturation without excessive base current waste?
To guarantee deep saturation at Ic = 1 A, drive the KTA1137AEUAB’s base with a resistor selected to deliver ≥ 50 mA of Ib. Assuming a minimum β of 50, Ib(min) = Ic / β = 1 A / 50 = 20 mA, but oversizing to 50 mA ensures margin against β variation. With a 3.3 V supply and Vbe ≈ 0.7 V, the base resistor Rb = (3.3 V - 0.7 V) / 0.05 A = 52 Ω. Use a standard 47 Ω value for robustness. Include a bypass capacitor (e.g., 100 nF) across the base resistor to decouple high-frequency noise and stabilize turn-on behavior under rapid transitions.
What derating guidelines apply to the KTA1137AEUAB when operating in ambient temperatures exceeding 85°C in industrial automation equipment?
Operating above 85°C requires linear derating of maximum power dissipation (Pd). The KTA1137AEUAB has a Pd rating of 300 mW at 25°C, but this drops by 4.5 mW/°C above that temperature. At 100°C ambient, Pd(max) = 300 mW - (75 × 4.5 mW) = 187.5 mW. For continuous conduction at 100 mA, Vce(sat) ≈ 0.3 V, so allowable Ic = Pd / Vce(sat) ≈ 187.5 mW / 0.3 V = 625 mA. Thus, even at moderate loads, thermal constraints limit usable current in high-temperature environments unless heatsinking or airflow is enhanced.
How does the KTA1137AEUAB perform in terms of leakage current and long-term reliability when used in always-on status indicator circuits powered continuously for months?
The KTA1137AEUAB exhibits a maximum Iceo of 100 nA at 25°C, increasing to 1 µA at 100°C. In an always-on LED indicator drawing 5 mA, collector leakage contributes negligibly to total power draw (< 0.1 mW). However, prolonged operation at elevated temperatures accelerates electromigration in the bond wires and metal traces within the QFN package. Kinetic recommends limiting continuous power dissipation to < 150 mW above 70°C ambient for mission-critical systems. Periodic functional testing or redundant signaling paths may be warranted in safety-rated applications to mitigate latent failure risks.

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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)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
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.
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KTA1137AEUAB

Kinetic Technologies
32D-KTA1137AEUAB

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