28498 Dresden Elektronik, 28498 Datasheet - Page 10
![DERFMEGA128-22A02](/photos/14/22/142244/mfg_28498_sml.jpg)
28498
Manufacturer Part Number
28498
Description
DERFMEGA128-22A02
Manufacturer
Dresden Elektronik
Series
deRFmega128r
Specifications of 28498
Frequency
2.4GHz
Data Rate - Maximum
2Mbps
Modulation Or Protocol
802.15.4
Applications
General Purpose
Power - Output
2.4dBm
Sensitivity
-101dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
18mA
Current - Transmitting
18mA
Data Interface
Connector, 2 x 23
Memory Size
1Mb
Antenna Connector
U.FL
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
284980-2
Manufacturer:
AMPTYCO
Quantity:
42 416
User Manual
Version 01.03
2010-09-07
6. Soldering Profile of deRFmega128-22C00 and deRFmega128-22C02
Table 5 gives the soldering profile for the radio modules.
Table 5: Soldering Profile
Profile Feature
Average-Ramp-up Rate (217°C to Peak)
Preheat Temperature 175°C ±25°C
Temperature Maintained Above 217°C
Time within 5°C of Actual Peak Temperature
Peak Temperature Range
Ramp-down Rate
Time 25°C to Peak Temperature
Figure 7 shows a recorded soldering profile for a radio module. The blue colored line
illustrates a temperature sensor placed next to the soldering-contacts of the radio module.
The pink line shows the set temperatures depending on the zone within the reflow soldering
machine.
Figure 7: Recorded soldering profile
A solder process without supply of nitrogen causes a discoloration of the metal RF-shielding.
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
01237 Dresden / Germany
280
260
240
220
200
180
160
140
120
100
80
60
40
Radio modules deRFmega128
Tel.: +49 351 – 31 85 00
Fax: +49 351 – 3 18 50 10
wireless@dresden-elektronik.de
www.dresden-elektronik.de
Measured Temp.
t [s]
Zone Temp.
Values
3°C/sec max.
180 sec. max
60 sec. to 150 sec.
20 sec. to 40 sec.
260°
6°C/sec max.
8 min. max.
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