W3127 Datasheet version 1.3. ISM 433MHz Helical Antenna. (19/19). ISM 433MHz Helical Antenna Ground cleared under antenna, clearance area 8.50x40.00 mm. Pulse Part Number: W3127 Features - Plastic supported helical antenna - Size (helix): Length 35.35mm, 7mm - Low weight (1.8g) - Mounting on top of the PWB - Through hole mechanical support pegs - Feed contact by soldering via PWB hole - Tray packing - RoHS Compliant Product Applications - Remote controls, toys etc. - 433MHz ISM Band Systems Electrical specifications +25 C Note: Electrical characteristics depend on test board (GP) size and antenna positioning on GP and Ground Clearance area size. ISM 433MHz Typical performance (test board size 100x40 mm, PWB ground clearance area 8.50 x40.00 mm), tuning and matching circuit: tuning 12nH series, matching 6.8nH shunt for Pulse standard evaluation board. Frequency Range Max Gain Return loss Impedance Operating MHz dBi min. dB Temperature C 433 435 -2.9 -15 50 -40 to +85 Pulse Finland Oy Takatie 6 90440 Kempele, Finland Tel: +358 207 935 500 Fax: +358 207 935 501 www.pulseeng.com/antennas 2014. All Rights Reserved. 7.00 W3127 Datasheet version 1.3. ISM 433MHz Helical Antenna. (19/19). ISM 433MHz Helical Antenna Ground cleared under antenna, clearance area 8.50x40.00 mm. Pulse Part Number: W3127 Terminal Configuration 12 nH 0 6.8 nH Feed line 50 Ground Clearance Area (8.50 x 40.00 mm) all metallization should be removed from all PWB layers PWB Layout 12 nH 0 Feed contact 6.8 nH Feed line 50 Tuning component Ground Clearance Area (8.50 x 40.00 mm) (fine tuning) all metallization should be removed from all PWB layers Ground via hole Tuning component (raw tuning) Feed contact Matching component Tuning component (fine tuning) 40 mm Ground via hole Tuning component (raw tuning) Matching component 40 mm Terminal Configuration and Antenna Dimensions Helix Helix 2 1 Antenna Features 35.35 1 2 No. Terminal Terminal Name Dimensions 1 Feed Wire diameter terminal 0.8mm 2 Support Diameter 2.5mm, length 2.6mm Matching circuit needs to placed on PCB close to antenna feed terminal. Matching component values depend on device construction size, surrounding mechanics, materials etc.. 4.15 25.00 Pulse Finland Oy Takatie 6 90440 Kempele, Finland Tel: +358 207 935 500 Fax: +358 207 935 501 www.pulseeng.com/antennas 2014. All Rights Reserved. 7.30 9.90 100 mm 100 mm