M4T28-BR12SH1 STMicroelectronics, M4T28-BR12SH1 Datasheet
M4T28-BR12SH1
Specifications of M4T28-BR12SH1
Available stocks
Related parts for M4T28-BR12SH1
M4T28-BR12SH1 Summary of contents
Page 1
... REMOVABLE BATTERY AVOIDS HEAT ASSOCIATED WITH SURFACE MOUNT PROCESS SNAPS DIRECTLY ONTO SURFACE- MOUNTED SNAPHAT SOIC CHOICE OF BATTERY CAPACITIES: – M4T28-BR12SH = 48 mAh – M4T32-BR12SH = 120 mAh KEYED INSERTION TO INSURE PROPER ASSEMBLY REMOVABLE FOR REPLACEMENT and PROPER DISPOSAL AVAILABLE IN TUBES OR TAPE & REEL FOR USE WITH THE 28 and 44-PIN SOIC VERSIONS OF THE TIMEKEEPER® ...
Page 2
... M4T28-BR12SH, M4T32-BR12SH TABLE OF CONTENTS SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Logic Diagram (Figure 2 Signal Names (Table 1 MAXIMUM RATING Absolute Maximum Ratings (Table 2 AND AC PARAMETERS Operating and AC Measurement Conditions (Table 3 MECHANICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SNAPHAT Insertion/Extraction Forces (Figure 3 Battery Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 UL Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 General Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Battery Discharge Rates (Figure 4 DIP Extractor Tool (Figure 5 ...
Page 3
... X1 X2 SNAPHAT V BAT– V BAT+ M4T28-BR12SH, M4T32-BR12SH The SNAPHAT top contains both the battery and crystal and is designed to be “snapped on” after the SOIC is surface mounted on the PC board. Thus the two piece solution avoids the battery and crystal from having to be exposed to the high tem- peratures of the surface mount process ...
Page 4
... M4T28-BR12SH, M4T32-BR12SH MAXIMUM RATING Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicat the Operating sections of this specification is Table 2 ...
Page 5
... Typically, though, the SNAPHAT will only need to be extracted and re-inserted once in its lifetime. Average Insertion Force Average Extraction Force Number of Extractions M4T28-BR12SH, M4T32-BR12SH AI02526 5/11 ...
Page 6
... M4T28-BR12SH, M4T32-BR12SH Battery Characteristics Figure 4 illustrates the lithium coin cell discharge rate for a given load. This demonstrates the char- 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 ...
Page 7
... SH = SNAPHAT® Temperature Range ° –40 to 85°C Shipping Method blank = Tubes TR = Tape & Reel For a list of available options (e.g., Speed, Package) or for further information on any aspect of this device, please contact the ST Sales Office nearest to you. M4T28-BR12SH, M4T32-BR12SH M4T 28-BR12 7/11 ...
Page 8
... M4T28-BR12SH, M4T32-BR12SH PACKAGE MECHANICAL INFORMATION Figure SNAPHAT Housing for 48 mAh Battery & Crystal, Package Outline Note: Drawing is not to scale. Table SNAPHAT Housing for 48 mAh Battery & Crystal, Package Mechanical Data Symb Typ 8/ Min Max 9.78 6.73 7.24 6.48 6.99 0.38 0.46 ...
Page 9
... E mm Min Max 10.54 8.00 8.51 7.24 8.00 0.38 0.46 0.56 21.21 21.84 17.27 18.03 15.55 15.95 3.20 3.61 2.03 2.29 M4T28-BR12SH, M4T32-BR12SH SHTK-A inches Typ Min Max 0.415 0.315 0.335 0.285 0.315 0.015 0.018 0.022 0.835 0.860 0.680 0.710 0.612 ...
Page 10
... M4T28-BR12SH, M4T32-BR12SH REVISION HISTORY Table 7. Document Revision History Date November 1999 First Issue 03/01/01 Reformatted 10/11 Revision Details ...
Page 11
... Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. The ST logo is registered trademark of STMicroelectronics All other names are the property of their respective owners. © 2001 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES www.st.com M4T28-BR12SH, M4T32-BR12SH 11/11 ...