BC557B

BC557B, three–terminal programmable shunt regulator diode, 37 V, 150 mA, 0.70W, TO

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Price:: US $0.10~0.10 / piece [Get Latest Price]

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PartNumber:: BC557B

Brand:: Fairchild Semiconductor - Fairchild | Pack: TO | D/C: 09+

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Products Upload time: 2013-05-26

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Part Number:BC557B
US $0.10 - 0.10
Quantity:

piece

Product Summary

The BC557B is a three–terminal programmable shunt regulator diode. The BC557B operates as a low temperature coefficient zener which is programmable from Vref to 36 V with two external resistors. The BC557B exhibit a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 W. The characteristics of the BC557B make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry.

Parametrics

BC557B absolute maximum ratings: (1)Cathode to Anode Voltage VKA: 37 V; (2)Cathode Current Range, Continuous IK: –100 to +150 mA; (3)Reference Input Current Range, Continuous Iref: –0.05 to +10 mA; (4)Operating Junction Temperature TJ: 150 °C; (5)Operating Ambient Temperature Range TA: 0 to +70°C; (6)Storage Temperature Range Tstg: –65 to +150 °C; (7)Total Power Dissipation @ TA = 25°C PD: Derate above 25°C Ambient Temperature D, LP Suffix Plastic Package 0.70W, P Suffix Plastic Package 1.10W, DM Suffix Plastic Package 0.52W; (8)Total Power Dissipation @ TC = 25°C PD: Derate above 25°C Case Temperature D, LP Suffix Plastic Package 1.5W, P Suffix Plastic Package 3.0W.

Features

BC557B features: (1)Programmable Output Voltage to 36 V; (2)Voltage Reference Tolerance: ±0.4%, Typ @ 25°C (TL431B); (3)Low Dynamic Output Impedance, 0.22 W Typical; (4)Sink Current Capability of 1.0 mA to 100 mA; (5)Equivalent Full–Range Temperature Coefficient of 50 ppm/°C Typical; (6)Temperature Compensated for Operation over Full Rated Operating Temperature Range; (7)Low Output Noise Voltage.