Gemalto M2M GmbH MC56 User Manual

MC55/56 Hardware Interface Description 
Confidential / Preliminary 

s

 

MC55/56_hd_v03.00 

Page 69 of 104 

16.08.2005 

MC55/56 uses an ultra-miniature SMT antenna connector 
supplied from Hirose Ltd. The product name is: 
 

 
The position of the antenna connector on the MC55/56 board can 
be seen in Figure 40.  
 

Figure 30: Mechanical dimensions of U.FL-R-SMT connector  

 
 
 

Table 21: Product specifications of U.FL-R-SMT connector 

Nominal impedance 

50 

Ω 

Rated frequency 

DC to 6 GHz 

Operating temp: -40°C to +90°C 
Operating humidity: max. 90% 

Female contact holding 
force 

0.15 N min 

Measured with a 

∅ 0.475 pin 

gauge 

Repetitive operation 

Contact resistance: 
Centre 25 m

Ω  

Outside 15m

Ω 

30 cycles of insertion and 
disengagement 

Vibration 

No momentary disconnections of 
1 µs; 
No damage, cracks and looseness 
of parts 

Frequency of 10 to 100 Hz, 
single amplitude of 1.5 mm, 
acceleration of 59 m/s

2

, for 5 

cycles in the direction of each of 
the 3 axes 

Shock 

No momentary disconnections of 
1 µs. 
No damage, cracks and looseness 
of parts. 

Acceleration of 735 m/s

2

, 11 ms 

duration for 6 cycles in the 
direction of each of the 3 axes 

Humidity resistance 

No damage, cracks and looseness 
of parts. 
Insulation resistance:  
100 M

Ω min. at high humidity 

500 M

Ω min when dry 

Exposure to 40°C, humidity of 
95% for a total of 96 hours 

Temperature cycle 

No damage, cracks and looseness 
of parts. 
Contact resistance: 
Centre 25 m

Ω  

Outside 15m

Ω 

Temperature: +40°C 

→ 5 to 35°C 

→ +90°C → 5 to 35°C 
Time: 30 min. 

→ within 5 min. → 

30 min. 

→ within 5 min 

Salt spray test 

No excessive corrosion 

48 hours continuous exposure to 
5% salt water