BOM SCHEMATICS

FCC ID: OHYRFTM

Parts List/Tune Up Info

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FCCID_28924

RF99 Wireless Thermometer March 12, 1999 Revision: 05 Common TRANSMITTER Component List Quantity Part Description Tx - Mechanical:______________________________________________________________________________ | See Mechanical Transmitter Components List |____________________________________________________________________________________________ Tx - Circuit Boards:___________________________________________________________________________ | 1 Digital board, double sided FR4, 1.0 mm thick, 0.5 -1.0 ounce copper (36 x 35 mm estimate) | 1 RF board, double sided FR4, 1.0 mm thick, 1.0 ounce copper (20.2 x 24.6mm) |____________________________________________________________________________________________ Tx - Electro-Mechanical:_______________________________________________________________________ | 1 LCD glass panel (20 x 33 mm glass size, 14 x 29 mm view area) | 1 LCD elastomeric connector (32 mm long) | 1+1+1 Battery contacts for 2 AA cells (+ve, -ve, jumper) | 1 3 wire ribbon cable connecting RF board to digital board | 1 2 wires to connect to battery clips | 1 2 wire connect Humidity sensor (humidity version only) | 8+ screws for assembly | 1 Push button momentary switch NormOpen, for C/F change (SW1) | 1 Push button momentary switch NormOpen, for Channel select (SW2) |____________________________________________________________________________________________ Tx - Digital Board (Production Version) Electrical:_________________________________________________ | 1 MSM64162, 3V, CMOS micro (capable of humidity circuit installation, not 64162D) (1C1) | 1 32768 Hz quartz watch crystal (X1) | 1 1 K-ohm 1% resistor, SMT or thru hole (R3) | 1 10 K-ohm 1% resistor, SMT or thru hole (R4) | 1 10 K-ohm 5% resistor, SMT (R5) | 2 51 K-ohm 5% resistor, SMT (R1,R2) | 6 0.1 microfarad, minimum 10 volt, ceramic capacitor, SMT (C3, C4, C5, C6, C7, C8) | 1 3300 picofarad NPO or COG ceramic capacitor, SMT (C1) | 1 HUMIDITY sensor C5-M3 (HM-1) | | 1 Temp. probe, 1.2 meter x 2wire cable(white & cap, Korean thermistor, Saitek custom potted cap) | (TH-1) (figure RF-Tx-32) | | 1 IN4001 Diode (D1) | 1 22 ohm 1watt resistor (R11) | | 5 values tbd HUMIDITY ONLY COMPONENTS (R6, R7, R8, R9, C2) | | |____________________________________________________________________________________________

RF99 Wireless Thermometer March 12, 1999 Revision: 05

RF99 Wireless Thermometer March 12, 1999 Revision: 05 TRANSMITTER Component List (cont’d) Quantity Part Description Tx - RF Board:________________________________________________________________________________ | 1 SAW resonator 315MHz, RFM RO-2073 RF Monolithics Inc. SAW1 | | 1 2 to 6 picofarads ceramic trim cap, Voltronics JZ060 SMT C4 | | 1 BFS17 NPN RF transistor Q1 | | 1 3.9 picofarad, 0805, +/-0.25p NPO ceramic capacitor C2 | 1 33 picofarad, 0805, 5%, 50V, NPO ceramic capacitor C5 | 1 68 picofarad, 0805, 5% 50V NPO, capacitor C6 | 3 470 picofarad, 0805, 10% 50V NPO, capacitor C1, C3 | | 1 22 nanohenry, 1008, 10% Inductor (Matsuta 1008-22NK) L2 | 1 270 nanohenry, 1008, 10% Inductor (Matsuta 1008-R27K) L1 | | 1 22 ohm 5% resistor, 0805, 1/10th watt R1 | 0 optional part, resistor, 0805, 1/10th watt R3 (NOT REQUIRED) | 1 680 ohm 5% resistor, 0805, 1/10th watt R4 | 1 5.6 K-ohm 5% resistor, 0805, 1/10th watt R2 | 1 Antenna wire, overmolded jacket, with end cap, white matte finish, approx 1.6mm diam (Fig. RF-Tx-31) | (length of wire 430 +/- 10mm from solder hole to end of conductor) |____________________________________________________________________________________________ FCC APPROVAL BILL OF MATERIALS

RF99 Wireless Thermometer March 12, 1999 Revision: 05


Document Created: 2001-07-01 19:43:06
Document Modified: 2001-07-01 19:43:06
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