2N 2N 2N Units. Collector – Emitter Voltage. VCEO. . verify that the information in this data sheet is current before using this product. Visit for additional data sheets and product information. Forward Current Transfer Ratio. IC = 10 Adc, VCE = 3 Vdc. 2N 2N NPN POWER SILICON TRANSISTOR. Qualified per MIL-PRF/ T4- LDS Rev. 1 (). Page 1 of 5. DEVICES. LEVELS. 2N 2N

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However, its main function is to return energy stored in the magnetizing inductance to the line and thereby reset the core after each cycle of operation. The output fre- quency is equal to half that of the oscillator. Here a capacitor is connected from Pin 3 and Pin 4 to Vee- The value of this capacitor determines the minimum duration of the overvoltage condition to which is necessary to trip the OVP.

Diodes Most diodes are marked with a part number and some means of identifying which lead is the cathode. An alternative to this is scientific acceptance sampling. The body of the wire is white and the color band spirals around the wire lead. The tolerance rating for a surface-mount resistor is expressed with a single character at the end of the numeric value code, according to Table Alt of the power-supply control functions reside in the MC pulse width modulation control I.

The circuit operates in the following manner; when Yqc rises above the trip point set by R1 and R2, the internal current source begins charging the capacitor, Cp, connected to pins 3 and 4.

However, at present, most designers find it less costly and more effective to add a high frequency noise filter rather than use a relatively expensive capacitor with low equivalent series inductance ESL. Draw a line from hr through chosen heatsink fin thickness, x, to find a. Current limiting and thermal shutdown are provided datwsheet make the fatasheet extremely rugged.


And the error amplifier in this case is nothing more than an op amp, and reference such as the TL from Motorola.

RMS and Peak repetitive rectifier current ratings can be determined from Figure All are nonweatherproof and have a nonconstant impedance. For the R package, the case is ground. There is a cost penalty here over the single transistor circuit due to the extra transistor, diode and floating base drive requirement of the upper switch transistor. If a replacement IC uses much more current than the device it replaces, a heat sink or blower may be needed to keep it cool.

The delay capacitor is used to provide some datzsheet immunity and to prevent the loss of a single half cycle from triggering the line fault signal. Some units are marked with a fifth band that represents the percentage of resistance change per hours of operation: Larger powered iron toroids are often used in the main LC output filter, although the higher permeability ferrite C and E cores with relatively large gaps can also be used. This inductance effectively snubs most tum-on load lines so that the rectifier recovery or short circuit current and the input voltage are not applied simultaneously to the transistor.

A variety of current ranges from mA to 3. The current limit adjust is set for a maximum dataheet current of 85 amperes. Adustable, low temperature coefficient trip point.

2N Datasheet(PDF) – Comset Semiconductor

The inductance and saturating current level of the primary are inherent to the design, and should be checked in the circuit or other suitable test fixture. In the following sections, a design procedure for convection cooled heatsinks is given.

The explanation of each section of the power supply, which follows, applies not only to this model but to the higher power 12 V, 84 A model shown in Figureas well.

Less output current is now required to keep Va and Vr2 at a level sufficient to bias Q3 on since the voltage at its emitter has the tendency to decrease faster than that at its base. However, this method presents a basic problem to the regulator designer.


The most frequently used reliability measure for regulators is the failure rate, expressed in percent per thousand hours. At an input of 90 Vac, full-load output voltages are 4. Determination of Input Voltage, Vin: First, a trial heatsink is chosen: As an aid in the selection of a suitable rectifier or bridge, the brief datashset guide of Table is included.

In order to simplify the design of the input supply see Section 8V,n is chosen to be 16V average with a 3V p-p ripple at full load and up to 25V at no load. A diode clamp can protect the lower transistor but a snubber or zener clamp must still be used to protect the top transistor from switching tran- sients.


The input rectifier is generally a bridge that operates off the ac line and into a capacitive filter. If dataxheet current capability is required, or if the IC regulator does not possess sufficient safe-operating-area SOAthe addition 22n6249 an external series pass element is necessary. V maxlow drift 0. With this circuit a designer can safely use the faster V to V bipolar or FET Switchmode transistors and push operating frequencies considerably higher.

Res Thick Film 2.

2N Datasheet(PDF) – New Jersey Semi-Conductor Products, Inc.

Very often a mV switching spike at the output may be attenuated considerably at the load itself due to the series inductance of the connecting cables and the additional filter capacitors found in many logic circuits.

The magnitude of the positive output voltage is equal to and tracks the negative output voltage. Values for 0jc and Osa are found on the device and heatsink data sheets, while dcs is given in Table The output is bypassed using a small 0.