52280 Datasheet, PDF (1/3 Pages) Micropac Industries – True Hermetically Sealed Proportionally Controlled Metal Package Heater Hybrids

True Hermetically Sealed Proportionally Controlled
Metal Package Heater Hybrids
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
• Self-contained
• Programmable via a single external resistor
• Available in 28 watt and 48 watt versions
ƒ Standard products
Applications:
• Ideal for microwave oscillators
• Telecommunications
• Other areas where temperature control is needed
DESCRIPTION
The Mii heater is a self-contained hybrid circuit heater programmable for temperature by a single external resistor. These
systems are ideal for microwave oscillators, telecommunications and other areas where temperature control is needed.
Metal package heaters are available in 28 watt and 40 watt versions..
Typical Electrical Characteristics for DC Metal Package Heater
Mii P/N 52280-2 …………………………………………………………….……………………….……..…. 28 VDC Input, 28 Watts
Mii P/N 52280-1 …………………………………………………………….…………………………...……. 28 VDC Input, 40 Watts
Operating Voltage Range (See Note 1) ………………………………………………………………………..…………. 28± 1 VDC
Voltage Limits ……………………………………………………………………………………………... 24 VDC Min, 32 VDC Max
Reverse Voltage Protection …………………………………………………………………………..………….………… to 50 VDC
Operating Current Range ………………………………………………………………….…………………..……… 0.005 to 1.00 A
Turn-on Current ………………………………………………………………………………………….…….……………… to 1.00 A
Quiescent Current ……………………………………………………………………………………………..…….. Less than .005 A
Typical Temperature Characteristics
Control Range …………………………………………………………………………………………..……………. +50°C to +100°C
Variation with Load (See Note 2) ……………………………………………………………………………………...…… 10° C Max
Input Voltage Variation (See Note 3) ……………………………………………………...…………………….…..…………… ±2°C
Maximum Control Temperature (See Note 4) ………………………………………………………………….…………….. +120°C
Environmental Characteristics
Operating Temperature ………………………………………………………………………………………….…… -55°C to +100°C
Altitude ……………………………………………………………………………………………………………….….. 70,000 Ft. Max
Shock ………………………………………………………………………………………………………………….……… 200G Max
Vibration ………………………………………………………………………………………………….………. 50G at 2,000 Hz Max
Humidity ……………………………………………………………………………………………………………… Greater than 95%
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION • 905 E. Walnut St., Garland, TX 75040 • [phone] • Fax [phone]
www.micropac.com E-MAIL: [e-mail]
12/17/01
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