Silicon Bipolar Low Noise Microwave Transistors 2N2857 Case Style TO-72 CAN (509) Features • High Gain (19dB Typical @ 450 MHz) • Low Noise Figure At Low Ic • Gold Metalization • Useful To 700 MHz • Can be Screened to JANTX, JANTXV Equivalent Levels • Excellent Reliability Description Designed especially for low cost, high reliability type applications, this NPN Silicon Planar Transistor offers low noise, high gain performance, which meets or exceeds all JAN specifications. These devices can be fully tested and screened in accordance with MIL-MRF19500 procedures. A 1.8 GHz current gain-bandwidth product (f T) is typical for this device. The transistors are rugged and employ gold metalization for an unprecedented reliability. Applications IF, VHF, UHF, TV and RF amplifiers. Specification Subject to Change Without Notice M-Pulse Microwave____________________________________________________________________________________ 576 Charcot Avemue, San Jose, California 95131 Tel (408) 432-1480 Fax (408)) 432-3440 1 Bipolar Low Noise Transistors 2N2857 Absolute Maximum Ratings 2N2857 Series Collector-Base Voltage VCBO 30 V Collector-Emitter Voltage VCEO 15 V Emitter-Base Voltage VEBO 1.5 V Collector Current IC 50 mA Junction Operating Temperature Tj 200°C Storage Temperature Chip or Ceramic Packages Plastic Packages -65°C to +200°C -65°C to +125°C Total Power Dissipation at 25°C 509 Case Style 450 mW Electrical Specifications @ 25°C 2N2857 Series Condition Symbol Units 2N2857 509 pkg Gain Bandwidth Product VCE = 10 volts IC = 8 mA fT GHz 1.8 typ Small Signal Power Gain VCE = 6 volts IC = 1.5 mA f = 450 MHz GPE dB Noise Figure 50 Ohms VCE = 6 volts IC = 1.5 mA f = 450 GHz NF dB Magnitude of small Signal short-circuit Transfer ratio VCE = 6 volts IC = 5 mA f = 100 MHz |hfe| Low frequency small Signal current transfer ratio VCE = 6 volts IC = 2 mA f = 1 KHz hfe Collector to base Feedback capacitance VCE = 6 volts CCB Collector base time constant VCE = 6 volts IC = 2 mA f = 1 KHz rb’ Cc Parameter of Test 12.5 – 21.0 4.5 Max. 10 - 19 50 - 220 pf 1.0 Max. psec 4 - 15 Specification Subject to Change Without Notice M-Pulse Microwave____________________________________________________________________________________ 576 Charcot Avemue, San Jose, California 95131 Tel (408) 432-1480 Fax (408)) 432-3440 2 Bipolar Low Noise Transistors 2N2857 Electrical Specifications @ 25°C Parameter Condition Symbol Min Typical Max Units ICBO 10 nA IC = 30 mA BVCEO 15 25 ---- Volts Collector-Base breakdown Voltage IC = 1 uA BVCBO 30 47 Volts Emitter-Base breakdown Voltage IC = 1 uA BVEBO 3 5.5 Volts Forward Current Gain VCE = 1 volts IC = 3 mA hFE 30 100 150 Collector-Base Junction Capacitance VCB = 10 volts f = 1 MHz CCB .6 1.0 pF (509) Base-Emitter Voltage Saturated IC = 10 mA IB = 1 mA VBESAT ---- .8 1.0 Volts Collector-Emitter Voltage Saturated IC = 10 mA IB = 1 mA VCESAT ---- .2 .4 Volts Collector Cut-off Current VCB = 15 volts IE = 0 µA Collector-Emitter breakdown Voltage Typical Scattering Parameters in the TO-72 Can Package FREQUENCY (MHz) 100 200 300 400 450 500 600 700 COLLECTOR CURRENT (mA) 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 1.0 1.5 3.0 5.0 INPUT REFLECTION COEFFICIENT MAG ANGLE .91 -26° .88 -39° .75 -48° .67 -53° .82 -43° .77 -48° .61 -65° .49 -77° .69 -64° .63 -70° .45 -89° .37 -100° .62 -76° .56 -81° .39 -100° .32 -111° .56 -80° .55 -86° .39 -104° .32 -117° .54 -87° .49 -93° .34 -112° .29 -123° .46 -102° .41 -108° .30 -126° .26 -138° .44 -111° .38 -117° .29 -135° .25 -145° FORWARD TRANSMISSION COEFFICIENT MAG ANGLE 3.2 152° 3.9 149° 6.5 136° 8.2 128° 3.0 138° 3.6 135° 5.4 122° 6.4 114° 2.5 120° 3.0 117° 4.0 105° 4.5 99° 2.3 110° 2.6 108° 3.9 97° 3.7 91° 2.1 107° 2.2 102° 2.8 92° 3.4 87° 2.0 101° 2.2 97° 2.8 87° 3.0 83° 1.7 91° 1.9 88° 2.3 79° 2.5 76° 1.6 85° 1.8 83° 2.1 75° 2.2 79° REVERSE TRANSMISSION COEFFICIENT MAG ANGLE .04 73° .04 71° .04 70° .03 69° .06 65° .06 65° .05 61° .04 60° .08 54° .07 52° .06 55° .06 58° .09 51° .09 50° .07 56° .06 60° .09 49° .08 51° .07 55° .06 60° .10 49° .09 50° .08 56° .07 61° .11 47° .10 49° .09 57° .09 63° .11 47° .11 50° .10 60° .09 64° OUTPUT REFLECTION COEFFICIENT MAG ANGLE .96 -11° .95 -12° .89 -15° .84 -16° .92 -16° .92 -16° .82 -18° .78 -18° .89 -21° .84 -23° .76 -22° .72 -21° .84 -25° .81 -26° .79 -24° .71 -23° .84 -26° .80 -26° .74 -25° .72 -23° .82 -28° .78 -28° .73 -26° .70 -24° .77 -31° .74 -31° .70 -28° .68 -26° .72 -34° .72 -33° .68 -30° .67 -28° Specification Subject to Change Without Notice M-Pulse Microwave____________________________________________________________________________________ 576 Charcot Avemue, San Jose, California 95131 Tel (408) 432-1480 Fax (408)) 432-3440 3 Bipolar Low Noise Transistors 2N2857 INCHES DIM MIN. MAX. A B C D E F G H J K L 0.350 0.240 0.315 0.370 0.260 0.335 0.040 0.500 0.016 0.021 0.190 0.210 89 DEG 91 DEG 0.029 0.043 43 DEG 47 DEG 0.028 0.034 MILLIMETERS MIN. MAX. 8,89 6,11 8,00 9,40 6,60 8,51 1,02 12,70 0,41 0,53 4,83 5,33 89 DEG 91 DEG 0,74 1,09 43 DEG 47 DEG 0,71 0,86 Specification Subject to Change Without Notice M-Pulse Microwave____________________________________________________________________________________ 576 Charcot Avemue, San Jose, California 95131 Tel (408) 432-1480 Fax (408)) 432-3440 4