Details

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BUY 5501 https://www.utsource.net/itm/p/12608140.html

Parameter	Description
Part Number	5501
Type	Silicon Controlled Rectifier (SCR)
Package	TO-220
Max Voltage	600V (VRRM)
Max Current	8A (IT(RMS))
Holding Current	5mA (IH)
Trigger Voltage	0.65V (VGT)
Trigger Current	10mA (IGT)
Power Dissipation	75W (Ptot) at 25掳C ambient temperature
Operating Temperature	-40掳C to +125掳C
Storage Temperature	-65掳C to +150掳C

Instructions for Use

1. Mounting:

   • Ensure the 5501 is mounted on a heatsink if continuous high current operation is expected.
   • Use thermal compound between the device and heatsink to improve heat dissipation.

2. Circuit Connection:

   • Connect the Anode (A) to the positive side of the load.
   • Connect the Cathode (K) to the negative side of the load.
   • The Gate (G) is used to trigger the SCR. Apply a positive pulse to the gate relative to the cathode to turn the SCR on.

3. Triggering:

   • The SCR will remain on once triggered until the current through the device drops below the holding current (IH).
   • To turn off the SCR, reduce the load current below the holding current or remove the voltage across the SCR.

4. Protection:

   • Use a snubber circuit (RC network) across the SCR to protect against voltage transients.
   • Consider adding a fuse in series with the load to protect against overcurrent conditions.

5. Handling:

   • Handle the 5501 with care to avoid damage to the leads and the body.
   • Avoid exposing the device to excessive static electricity, which can damage the internal structure.

6. Testing:

   • Test the SCR using a multimeter to check for continuity between the anode and cathode when the gate is triggered.
   • Ensure the SCR does not conduct when the gate is not triggered.

7. Storage:

   • Store the 5501 in a dry, cool place away from direct sunlight and sources of heat.
   • Keep the device in its original packaging to prevent damage during storage.

(For reference only)