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51974 Dataheets PDF



Part Number 51974
Manufacturers Micropac Industries
Logo Micropac Industries
Description True Hermetically Sealed Proportionally Controlled Heater Hybrids
Datasheet 51974 Datasheet51974 Datasheet (PDF)

True Hermetically Sealed Proportionally Controlled Heater Hybrids Mii HYBRID MICROELECTRONICS PRODUCTS DIVISION Features: • • • Self-contained Programmable via a single external resistor Available from 40 to 50 watts Applications: • • • Microwave Oscillators Telecommunications Other areas where temperature control is needed DESCRIPTION A self-contained hybrid circuit heater that is programmable via a single external resistor. These systems are ideal for microwave oscillators, telecommunicati.

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True Hermetically Sealed Proportionally Controlled Heater Hybrids Mii HYBRID MICROELECTRONICS PRODUCTS DIVISION Features: • • • Self-contained Programmable via a single external resistor Available from 40 to 50 watts Applications: • • • Microwave Oscillators Telecommunications Other areas where temperature control is needed DESCRIPTION A self-contained hybrid circuit heater that is programmable via a single external resistor. These systems are ideal for microwave oscillators, telecommunications and other areas where temperature control is needed. Heaters are available from 40 to 50 watts. Typical Electrical Characteristics for DC Heater (28V DC Input, 28 Watts (51974)) Operating Voltage Range (See Note 13) …………………………………………………………………………………… 28 ±1 VC Voltage Limits ……………………………………………………………………………………………… 24 VDC Min, 32 VDC Max Reverse Voltage Protection …………………………………………………………………………………………….………. To 50 V Operating Current Range ……………………………………………………………………………….…………....…. .015 to 1.00 A Turn on Current …………………………………………………………………………………………………..…………… To 1.00 A Quiescent Current ………………………………………………………………………………………..…………… Less than .019 A Typical Electrical Characteristics for AC Heaters (115 VAC Input, 28 Watts (52034)) Operating Voltage Range …………………………………………………………………….………. 100 to 125 VAC, 50 to 400 Hz Voltage Limits ……………………………………………………………………………………………………...……… 0 to 150 VAC Operating Current, Steady State ……………………………………………………………………………………..… .001 to .280 A Turn-on Current Range (at 115 VAC) ………………………………………………………………………………………. To .280 A Quiescent Current ……………………………………………………………………………………………………… Less than 1 mA Temperature Characteristics Control Range (See Note 1, 2 & 3) …………………………………………………………………………………. +50°C to +100°C Variation with Load (See Note 4) ………………………………………………………………………………………...….. 10°C Max Variation over Operating Range (See Note 5) …………………………………………………………………………………… ±2°C Maximum Control Temperature (See Note 6) ………………………………………………………………………………… +120°C Environmental Characteristics Operating Temperature …………………………………………………………………………………………….… -55°C to +100°C Altitude ………………………………………………………………………………………………………………...….. 70,000 ft. Max Shock ……………………………………………………………………………………………………………………….…. 20 G Max Vibration …………………………………………………………………………………………………………. 50 G 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 • (972) 272-3571 • Fax (972) 494-2281 www.micropac.com E-MAIL: [email protected] 12/13/01 1 True Hermetically Sealed Proportionally Controlled Heater Hybrids Reliability Each hybrid circuit is subjected to the following reliability screening per MIL-PRF-3853.


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