Details

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BUY A1837/C4793 KTC4793 KTA1837 A PAIR KEC https://www.utsource.net/itm/p/11552699.html

Parameter	A1837/C4793 (KTC4793, KTA1837, A PAIR KEC)
Type	Phototransistor
Package	TO-5
Collector-Emitter Voltage (Vce)	50 V
Emitter-Collector Voltage (Vec)	5 V
Collector Current (Ic)	50 mA
Collector Dark Current (Id) @ 25掳C	10 nA
Collector Light Current (Icl) @ 10 mW/cm2	500 渭A
Sensitivity (Current Transfer Ratio, CTR)	20% to 600% (Typical)
Power Dissipation (Ptot)	150 mW
Operating Temperature Range	-40掳C to +100掳C
Storage Temperature Range	-55掳C to +150掳C
Light Source	Infrared LED (Typical Wavelength: 940 nm)
Rise Time (tr)	2 渭s (Typical)
Fall Time (tf)	2 渭s (Typical)
Mounting Type	Through-Hole

Instructions for Use:

1. Handling Precautions:

   • Handle the device with care to avoid mechanical damage.
   • Avoid exposing the device to excessive humidity or temperature extremes during storage and operation.

2. Circuit Design:

   • Ensure that the collector-emitter voltage (Vce) does not exceed 50 V.
   • Limit the collector current (Ic) to 50 mA to prevent overheating and damage.
   • Use a suitable resistor to limit the current through the phototransistor when it is activated by the light source.

3. Mounting:

   • Solder the device using a temperature-controlled soldering iron to avoid thermal shock.
   • Ensure proper alignment and secure mounting to avoid mechanical stress on the leads.

4. Testing:

   • Test the device under controlled conditions to verify its performance parameters.
   • Use a calibrated light source to measure the sensitivity (CTR) accurately.

5. Storage:

   • Store the device in a dry, cool place away from direct sunlight and corrosive substances.
   • Follow the recommended storage temperature range to ensure long-term reliability.

6. Application Notes:

   • The A1837/C4793 is commonly used in optocouplers, isolators, and other applications where electrical isolation is required.
   • The high CTR makes it suitable for applications requiring high sensitivity and low power consumption.

(For reference only)