Bay Linear Inspire the Linear Power B8250 Surface Mount Zero Bias Schottky Detector Diodes Series Description Features The B-8250 line of zero bias Schottky detector diodes by Bay Linear have been engineered for use in small signal (Pin<-20 dBm) applications at frequencies below 2.0 GHz. The ideal applications are for RF/ID and RF Tags where primary (DC bias) power is not available. * * * * At Bay Linear, our commitment to quality components gives our customers a reliable second source of products, which are tested at a more stringent level than our competitors. Manufacturing techniques assure that when two diodes are mounted into a single package they are taken from adjacent sites on the wafer. * * * * Surface Mount SOT-23 3 Pin Packages SOT-143 Packages 4 Pin Packages Miniature SOT-323/363 3 pin and 6 pin High Detection Sensitivity: up to 50mV/W at 915 MHz Low Flicker Noise: -165 dBV/Hz at 100Hz Low reverse leakage Matched Diodes High Thermal Conductivity for greater Power In cross referenced parts, we guarantee pin to pin compatibility. The various package configurations available provide a low cost solution to a wide variety of design problems. Pin Connection Ordering Information Pin Connections and Package Marking C4Z 1 2 3 Package SOT-26 Part No. B850XK6 -X.X 6 5 4 Notes: 1. Package marking provides orientation and identification 2. See "Electrical Specifications" for appropriate package marking Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B8250 SOT-323 Package Lead Code Identification (top view) SINGLE SERIES SOT-23/SOT-143 Package Lead Code Identification (top view) SINGLE 3 SERIES 3 3 1 1 1 2 B 8250 3 2 1 2 2 B 8252 UNCONNECTED PAIR 3 4 SOT-23 Package 6 Lead Code Identification (top view) UNCONNECTED TRIO 6 5 4 1 6 BRIDGE QUAD 5 4 2 B 8255 1 2 3 1 B 8256 2 3 B 8254 Equivalent Linear Circuit Model Rj RS Cj RS=series resistance (see Table of SPICE parameters) CJ = junction capacitance (see Table of SPICE parameters) RJ = 8.33 X 10-5nT where Ib = externally applied bias current in amps Is = saturation current (see table of SPICE parameters) T = temperature, K n = ideality factor (see table of SPICE parameters) Bay Linear, Inc SPICE PARAMETER Parameter BV CJO EG IBV IS N RS PB (VJ) PT(XT1) M Units V pF eV A A V 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 B 825X 5.0 0.175 0.68 2.9 E-4 2.9 E-6 1.03 26 0.350 1.95 0.49 www.baylinear.com B8250 Absolute Maximum Ratings Parameter Peak Inverse Voltage Junction Temperature Storage Temperature Operating Temperature Thermal Resistance[2] Symbol PIV TJ TSTG TNP jc SOT-23/143 2.0 150 -65 to 150 -65 to 150 500 SOT-323 2.0 150 -65 to 150 -65 to 150 150 Units V C C C C/W DC Electrical Specifications (TC = 25C, Single Diode) Package Marking Part No. 8250 8251 8252 8253 8254 8255 8256 C0 C1 C2 C3 C4 C5 C6 Maximum Forward Voltage VF (mV) Configuration Single Single Series Pair[2,3] Series Pair[2,3] Bridge Quad Unconnected Pair[2,3] Unconnected Trio 150 IF=0.1 mA Test Conditions Typical Capacitance CT (pF) 250 0.30 IF=1.0 mA VF=-0.5V to -1.0V F=1 MHz DC Electrical Specifications, TC = +25C, Diode Pairs Part Number 8252 8253 Test Conditions Maximum Forward Voltage Difference VF (mV) Maximum Capacitance Difference CT (pF) 15 -0.5 IF = 0.1mA VF = -0.5V to -1.0 V F = 1 MHz Notes: 1. Operation in excess of any one of these conditions may result in permanent damage to the device 2. TC = +25C, where TC is defined to be the temperature at the package pins where contact is made to the circuit board Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B8250 10000 RL = 100 K 1000 10 VOLTAGE OUT (mV) IF - FORWARD CURRENT (mA) 100 1 0.1 915 MHz 100 10 1 DIODES TESTED IN FIXED-TUNED FR4 MICROSTRIP CIRCUITS. 0.01 0.1 -50 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 VF - FORWARD VOLTAGE (V) 2.9 2.7 10 DIODES TESTED IN FIXED-TUNED FR4 MICROSTRIP CIRCUITS. 0.3 -50 -40 -30 POWER IN (dBm) Graph 3: +25C Expanded Output Voltage vs. Input Power. See Figure 2. OUTPUT VOLTAGE (mv) VOLTAGE OUT (mV) 3.1 1 -20 -10 0 Graph 2: +25C Output Voltage vs. Input Power at Zero Bias RL = 100 K 915 MHz -30 POWER IN (dBm) Graph 1: Typical Forward Current vs. Forward Voltage 30 -40 FREQUENCY = 2.45 GHz PIN = -40 dBm RL = 100 K 2.5 2.3 2.1 1.9 1.7 1.5 1.3 1.1 MEASUREMENTS MADE USING A FR4 MICROSTRIP CIRCUIT. 0.9 0 10 20 30 40 50 60 70 80 90 100 TEMPERATURE (C) Graph 4: +25C Output Voltage vs. Temperature. Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com Advance Information- These data sheets contain descriptions of products that are in development. The specifications are based on the engineering calculations, computer simulations and/ or initial prototype evaluation. Preliminary Information- These data sheets contain minimum and maximum specifications that are based on the initial device characterizations. These limits are subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges. The application circuit examples are only to explain the representative applications of the devices and are not intended to guarantee any circuit design or permit any industrial property right to other rights to execute. Bay Linear takes no responsibility for any problems related to any industrial property right resulting from the use of the contents shown in the data book. Typical parameters can and do vary in different applications. Customer's technical experts must validate all operating parameters including " Typical" for each customer application. LIFE SUPPORT AND NUCLEAR POLICY Bay Linear products are not authorized for and should not be used within life support systems which are intended for surgical implants into the body to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility applications without the specific written consent of Bay Linear President. Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com