Product Summary
The JAN1N2985RB is a high power 10 W Zener diode. The device may be operated up to 10 W with adequate mounting and heat sinking with their low thermal resistance. The JAN1N2985RB is also available in JAN, JANTX, JANTXV military qualifications. The applications of the JAN1N2985RB include Regulates voltage over a broad operating current and temperature range, Standard voltage tolerances are +/- 5% with B suffix, +/-10% with an A suffix, and +/-20% with no suffix, Consult factory for +/-2% or +/-1% voltage tolerance with a C or D suffix respectively, Reverse polarity available, Nonsensitive to ESD per MIL-STD-750 Method 1020 and Inherently radiation hard as described in Microsemi MicroNote 050.
Parametrics
JAN1N2985RB absolute maximum ratings: (1)Junction Temperatures: -65 to +175℃; (2)Storage Temperatures: -65 to +200℃; (3)DC Power Dissipation: 10 Watts; (4)Power Derating: 80 mW/℃ above 50℃; (5)Forward Voltage @ 2.0 A: 1.5 Volts; (6)THERMAL RESISTANCE: 10℃/W (typical) junction to case (stud); (7)Solder temperatures: 260℃ for 10 s (max).
Features
JAN1N2985RB features: (1)JEDEC registered 1N2970 thru 1N3015B and 1N3993 thru 1N4000A; (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 and cathode to case for 1N3993 thru 1N4000A ; (7)Reverse polarity is cathode to case for 1N2970 thru 1N3015B and anode to case for 1N3993 thru 1N4000A by designating R suffix, e.g. 1N2970RB, 1N3993RA, etc; (8)Consult factory for surface mount equivalents.
Diagrams
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