RXM-GPS-R4-T Linx Technologies, RXM-GPS-R4-T Datasheet - Page 33

• Manufacturer Part Number: RXM-GPS-R4-T
• Description: GPS Modules R4 Series GPS Recvr Module Tape and Reel
• Manufacturer: Linx Technologies

Specifications of RXM-GPS-R4-T

• Rohs: yes
• Frequency Band: 1575.42 MHz
• Number Of Channels: 48
• Time To First Fix (cold Start): 32 s
• Acquisition Sensitivity: - 160 dBm
• Horizontal Position Accuracy: 2.5 m
• Operating Supply Voltage: 3.3 V
• Operating Supply Current: 56 mA
• Interface Type: Serial
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Dimensions: 15 mm x 13 mm x 2.2 mm
• Minimum Operating Temperature: - 40 C

Production Guidelines
The modules are housed in a hybrid SMD package that supports hand
and automated assembly techniques. Since the modules contain discrete
components internally, the assembly procedures are critical to ensuring
the reliable function of the modules. The following procedures should be
reviewed with and practiced by all assembly personnel.
Hand Assembly
Pads located on the bottom of the
module are the primary mounting
surface. Since these pads are
inaccessible during mounting,
castellations that run up the side
of the module have been provided
to facilitate solder wicking to the
module’s underside. This allows
for very quick hand soldering for
prototyping and small volume
production.
If the recommended pad guidelines have been followed, the pads will
protrude slightly past the edge of the module. Use a fine soldering tip to
heat the board pad and the castellation, then introduce solder to the pad
at the module’s edge. The solder will wick underneath the module,
providing reliable attachment. Tack one module corner first and then work
around the device, taking care not to exceed the times listed below.
Figure 35: Absolute Maximum Solder Times
Absolute Maximum Solder Times
Hand Solder Temperature TX: +225ºC for 10 seconds
Hand Solder Temperature RX: +225ºC for 10 seconds
Recommended Solder Melting Point: +180ºC
Reflow Oven: +240°C Max. (See Figure 36)
!
Warning:
Pay attention to the absolute maximum solder times.
–
Figure 34: Soldering Technique
Solder
29
Soldering Iron
Tip
PCB Pads
–
Castellations