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Amplifier Transistors

BC546B, BC547A, B, C, BC548B, C Amplifier Transistors
NPN Silicon

• Pb−Free Package is Available*

Rating Collector-Emitter Voltage BC546 BC547 BC548 Collector-Base Voltage BC546 BC547 BC548 Emitter-Base Voltage Collector Current − Continuous Total Device Dissipation @ TA = 25°C Derate above 25°C Total Device Dissipation @ TC = 25°C Derate above 25°C Operating and Storage Junction Temperature Range VEBO IC PD PD TJ, Tstg VCBO 80 50 30 6.0 100 625 5.0 1.5 12 −55 to +150 Vdc mAdc mW mW/°C Watt mW/°C °C

Symbol VCEO

Value 65 45 30

Unit Vdc


Vdc TO−92 CASE 29 STYLE 17 1 2 3 BC 54xx YWWG

BC54xx = Specific Device Code Y = Year WW = Work Week G = Pb−Free Package

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.

See detailed ordering and shipping information in the package dimensions section on page 5 of this data sheet.

Characteristic Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Symbol RqJA RqJC Max 200 83.3 Unit °...


Single Supply Dual Operational Amplifiers

LM258, LM358, LM358A, LM358E, LM2904, LM2904A, LM2904E, LM2904V, NCV2904

Single Supply Dual Operational Amplifiers
Utilizing the circuit designs perfected for Quad Operational Amplifiers, these dual operational amplifiers feature low power drain, a common mode input voltage range extending to ground/VEE, and single supply or split supply operation. The LM358 series is equivalent to one−half of an LM324.
These amplifiers have several distinct advantages over standard operational amplifier types in single supply applications. They can operate at supply voltages as low as 3.0 V or as high as 32 V, with quiescent currents about one−fifth of those associated with the MC1741 (on a per amplifier basis). The common mode input range includes the negative supply, thereby eliminating the necessity for external biasing components in many applications. The output voltage range also includes the negative power supply voltage.
• Short Circuit Protected Outputs • True Differential Input Stage • Single Supply Operation: 3.0 V to 32 V • Low Input Bias Currents • Internally Compensated • Common Mode Range Extends to Negative Supply • Single and Split Supply Operation • ESD Clamps on the Inputs Increase Ruggedness of the Device
without Affecting Operation
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP ...


Adjustable precision shunt regulators

TL431 family
Adjustable precision shunt regulators
Rev. 6 — 9 January 2019

Product data sheet

1. Product profile

1.1. General description
Three-terminal shunt regulator family with an output voltage range between Vref = 2.495 V and 36 V, to be set by two external resistors.

Table 1. Product overview

Reference voltage Temperature range (Tamb)

tolerance (Vref)

0 °C to 70 °C

-40 °C to 85 °C

2.0 %



1.0 %



0.5 %




Pinning configuration (see Table 5)
normal pinning normal pinning mirrored pinning normal pinning normal pinning mirrored pinning normal pinning normal pinning mirrored pinning

1.2. Features and benefits
• Programmable output voltage up to 36 V • Three different reference voltage tolerances: • • Standard grade: 2 %
• A-Grade: 1 % • B-Grade: 0.5 % • Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C) • Low output noise • Typical output impedance: 0.2 Ω • Sink current capability: 1 mA to 100 mA • AEC-Q100 qualified (grade 1)


TL431 family
Adjustable precision shunt regulators

1.3. Applications
• Shunt regulator • Precision current limiter • Precision constant current sink • Isolated feedback loop for Switch Mode Power Supply (SMPS)

1.4. Quick reference da...


1-Wire Digital Thermometer

Click here for production status of specific part numbers.

Programmable Resolution 1-Wire Digital Thermometer

General Description
The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.
●● Thermostatic Controls ●● Industrial Systems ●● Consumer Products ●● Thermometers ●● Thermally Sensitive Systems
Ordering Information appears at end of data sheet.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.

Benefits and Features
●● Unique 1-Wire® Interface Requires Only One Port Pin for Communication
●● Reduce Component Coun...

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