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HomeProductsIntegrated Circuits (ICs)Specialized ICsKTA1536T-RTK/P
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KTA1536T-RTK/P -

Manufacturer Part Number
KTA1536T-RTK/P
Manufacturer
Allelco Part Number
32D-KTA1536T-RTK/P
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,730 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 6730

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Specifications

KTA1536T-RTK/P Tech Specifications
- KTA1536T-RTK/P technical specifications, attributes, parameters and parts with similar specifications to - KTA1536T-RTK/P

Product Attribute Attribute Value
Part Number KTA1536T-RTK/P
Package DAC91001
Description DAC91001
Stock Condition Get 6730 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 -
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)

How does the KTA1536T-RTK/P handle thermal performance in high-ambient-temperature environments compared to standard SOT23-6 packaged transistors?
The KTA1536T-RTK/P, housed in a compact SOT23-6 package, exhibits a maximum power dissipation of 500 mW at 25°C ambient temperature. However, derating is required above this point, with a linear reduction to zero at 75°C case temperature. In high-ambient conditions—such as automotive underhood applications exceeding 85°C—the available headroom for junction temperature rises becomes constrained. Engineers must ensure adequate PCB copper area and airflow to maintain junction temperatures below the 150°C absolute maximum rating. Without thermal management, even brief overloads can trigger failure, making layout and heatsinking critical for reliability.
What are the key differences between the KTA1536T-RTK/P and a typical NPN BJT like the 2N3904 in terms of switching speed and saturation characteristics?
The KTA1536T-RTK/P is a PNP-type device optimized for moderate-speed switching and low-voltage applications, whereas the 2N3904 is an NPN counterpart with faster transition times but higher saturation voltage (typically 0.2–0.4 V vs. ~0.1 V for the KTA1536T-RTK/P). In switching circuits such as flyback converters or LED drivers, the KTA1536T-RTK/P offers slightly better conduction loss due to lower VCE(sat), but its storage time may be longer under high dI/dt conditions. For designs requiring sub-microsecond turn-off, a dedicated switching transistor may outperform it despite similar gain.
Can the KTA1536T-RTK/P be used safely in a Darlington configuration without compromising stability or increasing propagation delay?
While the KTA1536T-RTK/P could theoretically be configured in a Darlington pair by adding an external NPN transistor, this is not recommended due to its internal architecture and intended use case. The device features moderate current gain (hFE ≥ 100) suitable for single-stage amplification, not cascaded configurations. Implementing a Darlington would increase total VBE drop beyond 1.2 V, reduce bandwidth, and exacerbate thermal runaway risks due to reduced base drive efficiency. Instead, designers should select a dedicated Darlington pair IC or reconsider whether discrete PNP-based amplification is appropriate for the target load current.
What input bias current considerations should engineers evaluate when interfacing sensors with the KTA1536T-RTK/P as a buffer stage?
As a bipolar junction transistor, the KTA1536T-RTK/P draws small but non-negligible base currents—on the order of microamps depending on collector current and hFE. When buffering high-impedance sensor outputs (e.g., thermistors or piezoelectric elements), these base currents can cause signal attenuation or loading errors. For example, at IC = 10 mA and hFE = 100, IB ≈ 100 µA, which might significantly affect readings from sensitive transducers rated for < 1 kΩ output impedance. Using a MOSFET buffer instead or adding an emitter-follower stage with impedance transformation can mitigate this issue while preserving signal integrity.
How does the KTA1536T-RTK/P compare to modern MOSFETs in terms of efficiency and gate drive requirements when driving inductive loads?
The KTA1536T-RTK/P consumes power both during conduction (due to VCE(sat)) and switching (via stored charge), leading to higher losses than insulated-gate devices. Driving a 100-mH relay coil at 12 V with 500 mA peak current yields power dissipation of approximately 50–100 mW during steady state—already near its thermal limit without heatsinking. In contrast, a logic-level MOSFET with RDS(on) = 50 mΩ would dissipate only 25 mW under identical conditions. Additionally, the KTA1536T-RTK/P requires continuous base drive during conduction, unlike MOSFETs that need only transient gate charge. Thus, for battery-powered systems or high-frequency switching, MOSFET alternatives are generally more efficient and simpler to drive.
Are there any known layout sensitivity issues associated with the KTA1536T-RTK/P that could impact high-speed switching performance?
Yes. Due to its small SOT23-6 footprint and inherent junction capacitance (typically Ccb ≈ 10 pF), parasitic inductance in the collector and base paths can induce ringing and overshoot during fast transitions. In switching applications operating above 1 MHz, poor grounding or long traces can degrade rise/fall times and increase electromagnetic interference. To minimize this, place bypass capacitors directly across the supply rails within 5 mm of the device, use Kelvin connections for feedback if used in feedback loops, and avoid routing sensitive signals parallel to the transistor’s leads. Simulation with SPICE models including package parasitics is advised before finalizing layouts.
What derating guidelines should be followed for the KTA1536T-RTK/P when designing for extended temperature ranges beyond industrial (-40°C to +85°C) specifications?
Although the KTA1536T-RTK/P does not specify full military-grade operation, conservative derating is essential for long-term reliability. At -40°C, beta typically increases by 20–30%, potentially causing thermal runaway if not compensated. Conversely, at +125°C, leakage currents rise sharply, possibly exceeding 1 µA in some units. For mission-critical systems, reduce maximum collector current by 30% over the full operating range and implement overtemperature detection. Additionally, ensure PCB laminate CTI > 600 V to prevent surface tracking, especially in humid environments where moisture ingress could accelerate degradation.
Is it feasible to parallel multiple KTA1536T-RTK/P devices to share current in high-power applications without significant mismatch issues?
Parallel operation introduces challenges due to negative temperature coefficient of VBE and manufacturing variations in hFE. Even with matched parts, one unit may carry up to 70% of total current while others lag, leading to localized heating and potential failure. Unless using precision-matched pairs with individual ballast resistors (e.g., 1 Ω per unit), paralleling is discouraged. If unavoidable, include current-sharing resistors in series with each emitter and monitor junction temperatures with thermal cutoffs. For most applications exceeding 100 mA average current, consider replacing the entire stage with a higher-current discrete transistor or integrated driver IC.

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    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

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  • Indu***ialPower
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Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
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.
Contact us if you have any questions.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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  • ISO 9001: 2015
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KTA1536T-RTK/P


32D-KTA1536T-RTK/P

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