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Hand Assembly
Pads located on the bottom of the
Castellations
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
Soldering Iron
Tip
Solder
PCB Pads
Figure 21: Soldering Technique
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.
!
Warning: Pay attention to the 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: +250°C Max. (See Figure 23)
Figure 22: Absolute Maximum Solder Times
– 19 –
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相关代理商/技术参数
RXM-418-LR
功能描述:射频模块 RF Receiver 418MHz
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
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RXM-418-RM
功能描述:RECEIVER RF 418MHZ RoHS:否 类别:RF/IF 和 RFID >> RF 接收器 系列:RM 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 09/Jan/2012 标准包装:50 系列:* 频率:850MHz ~ 2.175GHz 灵敏度:- 数据传输率 - 最大:- 调制或协议:- 应用:* 电流 - 接收:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 特点:- 电源电压:4.75 V ~ 5.25 V 工作温度:0°C ~ 85°C 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘
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功能描述:射频模块 RF Receiver 433MHz
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