Details

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BUY D4991A https://www.utsource.net/itm/p/12610500.html

Parameter	Value	Unit
Type	Zener Diode
Maximum Power Dissipation	500	mW
Zener Voltage (Vz) at Iz = 5mA	12	V
Maximum Reverse Current (Ir) at Vr = 12V	5	渭A
Forward Voltage (Vf) at If = 1mA	1.1	V
Operating Temperature Range	-65 to +175	掳C
Storage Temperature Range	-65 to +150	掳C
Package Type	DO-35

Instructions for Use:

1. Mounting:

   • Ensure that the diode is mounted on a suitable PCB or heatsink to dissipate heat effectively.
   • Avoid mechanical stress on the leads during soldering.

2. Soldering:

   • Use a temperature-controlled soldering iron with a maximum tip temperature of 350掳C.
   • Soldering time should not exceed 10 seconds per connection.
   • Allow the diode to cool down before handling.

3. Biasing:

   • Connect the cathode (shorter lead) to the positive side of the circuit and the anode (longer lead) to the negative side.
   • Ensure the reverse voltage does not exceed the Zener voltage to prevent damage.

4. Power Dissipation:

   • Do not exceed the maximum power dissipation of 500 mW to avoid overheating and potential failure.
   • Use a heatsink if operating near the maximum power dissipation limit.

5. Storage:

   • Store the diode in a dry, cool place within the specified storage temperature range.
   • Avoid exposure to high humidity and corrosive environments.

6. Handling:

   • Handle the diode with care to avoid damaging the leads or the body.
   • Use anti-static precautions to prevent electrostatic discharge (ESD) damage.

(For reference only)