View 1n4148 datasheet:

1N/FDLL 914/A/B / 916/A/B / 4148 / 4448 Small Signal Diode Absolute Maximum Ratings* TA = 25°C unless otherwise noted Symbol Parameter Value Units VRRM Maximum Repetitive Reverse Voltage 100 V IF(AV) Average Rectified Forward Current 200 mA IFSM Non-repetitive Peak Forward Surge Current Pulse Width = 1.0 second 1.0 A Pulse Width = 1.0 microsecond 4.0 A Storage Temperature Range -65 to +200 Tstg °C Operating Junction Temperature 175 TJ °C *These ratings are limiting values above which the serviceability of any semiconductor device may be impaired. NOTES: 1) These ratings are based on a maximum junction temperature of 200 degrees C. 2) These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations. Therm