Features: • JEDEC registered 1N2804 thru 1N2846B and 1N4557 thru 1N4564B
• Internal solder bond construction
• Hermetically sealed (welded)
• Zener Voltage 3.9V to 200V.
• Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/114 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening; (e.g. JANTX1N2804B, etc.
• Standard polarity is anode to case
• Reverse polarity with cathode to case by designating R suffix in part number, e.g. 1N2804RB, etc.
• Consult factory for surface mount equivale
Application• 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% with a C or D suffix respectively
• Reverse polarity available
• Nonsensitive to ESD per MIL-STD-750 Method 1020
• Inherently radiation hard as described in Microsemi MicroNote 050
Specifications• Junction Temperatures: -65oC to +175oC
• Storage Temperatures: -65oC to +200oC
• DC Power Dissipation: 50 watts at TC < 75 oC
• Power Derating: 0.5W/oC above 75oC
• Forward Voltage @ 10 A: 1.5 Volts
• THERMAL RESISTANCE: 2.0 oC/W maximum junction to base (1.5 oC/W typical)
• Solder temperatures: 260 oC for 10 s (max)DescriptionThese high power 50 W Zener diodes 1N4557 represented by the JEDEC registered 1N2804 thru 1N2846B and 1N4557 thru 1N4564B series provide voltage regulation in a selection over a 3.9 V to 200 V broad range of voltages. The 1N4557 may be operated up to 50 W with adequate mounting and heat sinking with their low thermal resistance. These Zeners 1N4557 are also available in JAN,
JANTX, JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
1N4557 Data Sheet
