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M4Z28-BR00SH1 Fiches technique(PDF) 2 Page - STMicroelectronics |
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M4Z28-BR00SH1 Fiches technique(HTML) 2 Page - STMicroelectronics |
2 / 7 page M4ZXX-BR00SH 2/7 MECHANICAL INFORMATION Electrical connection to the SOIC is made through two pins that connect to the press fitted sockets at one end of the SOIC. Critical contact points be- tween the pins and sockets are gold-plated to re- sist oxidation. Internally, each socket contains six independent contact fingers to form redundant connections between the two components. These sockets were designed to provide high point con- tact force to provide the lowest possible contact re- sistance. The SNAPHAT top also incorporates four molded-in retaining clips which hold onto the ends of the SOIC insuring mechanical and electri- cal connection even under severe mechanical shock and vibration. The combined SOIC and SNAPHAT assembly can sustain shock levels in excess of 100 g without separating. This package also passes variable frequency testing in accor- dance with MIL-STD-883, method 2007.2, condi- tion A. Figure 2 illustrates the affect of repeated insertion and extraction of the SNAPHAT top to the SOIC. The force required to extract the SNAPHAT, and then to re-insert it, reduces each time. After three or four extractions, though, the reduction starts to become unnoticeable, and the force required remains at a fairly constant figure. Typically, though, the SNAPHAT will only need to be extracted and re-inserted once in its lifetime. BATTERY CHARACTERISTICS Figure 3 illustrates the lithium coin cell discharge rate for a given load. This demonstrates the char- Figure 2. SNAPHAT Insertion/Extraction Forces AI02526 0 2.5 5 12 3 6 Number of Extractions 45 7 7.5 10 12.5 5 7.5 20 9 8 10 Average Insertion Force Average Extraction Force Table 1. Description Parameter Value Operating Temperature 1 = 0 to 70 °C 6 = –40 to 85 °C Storage Temperature –40 to 85 °C Nominal Battery Voltage 2.8 V Nominal Battery Capacity 48 mAh M4Z28 120 mAh M4Z32 Battery Chemistry Li(CF)x acteristically flat voltage level supplied by the bat- tery until very near the end of its life. These discharge levels have been greatly accelerated in comparison to the normal, actual usage. UL RECOGNITION The M4Zxx-BR00SH has been recognized by Un- derwriters Laboratories under their Component Recognition Program and carries U.L. File Num- ber E89556. BATTERY LIFE For information on Data Retention Life and Battery Storage Life, please refer to the Application Note AN1012. |
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