1N2993B

The 1N2993B is designed as 10W zener diode and it is one member of the 1N2970 thru 1N3015B series which provide voltage regulation in a selection over a 3.9V to 200V broad range of voltages. 1N2993B may be operated up to 10 W with adequate mounting and heat sinking with their low thermal resistance. These zeners 1N2993B are also available in JAN, JANTX, JANTXV military qualifications.

1N2993B has eight features. (1)JEDEC registered. (2)Internal solder bond construction. (3)Hermetically sealed (welded). (4)Zener voltage 3.9V to 200V. (5)Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/124 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening; (e.g. JANTX1N2970B, JANTXV1N3996A, etc. (6)Standard polarity is anode to case (stud) for 1N2970 thru 1N3015B. (7)Reverse polarity is cathode to case. (8)Consult factory for surface mount equivalents. That are all the main features.

Some absolute maximum ratings of 1N2993B have been concluded into several points as follow. (1)Its junction temperatures would be from -65°C to +175°C. (2)Its storage temperatures would be from -65°C to +200°C. (3)Its DC power dissipation would be 10 watts. (4)Its power derating would be 80 mW/°C above 50°C. (5)Its forward voltage at 2.0A would be 1.5 volts. (6)Its thermal resistance would be 10°C/W (typical) junction to case (stud). (7)Its solder temperatures would be 260 °C for 10s (max). It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some ekectrical characteristics of 1N2993B are concluded as follow. (1)Its nominal zener voltage would be 43V at Izt. (2)Its zener test current Izt would be 60mA. (3)Its max dynamic impedance would be 12 ohms at Izt and 60 ohms at 1mA (Izk). (4)Its max DC zener current would be 195mA. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!