15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com
PARAMETERS
CONDITIONS
ECX-1210B
UNITS
MIN
TYP
Frequency
32.768
KHz
Frequency Tolerance*
@ +25°C
ppm
Load Capacitance
Specify in P/N
12.5
pF
Drive Level
DL
μW
Equivalent Series Resistance
R1
Ω
Turnover Temperature
+20
+25
°C
Temperature Coefficient
-0.02
-0.03
ppm/°C²
Shunt Capacitance
Co
1.5
pF
Aging (First Year)
@ +25°C ±3°C
ppm
Operating Temperature*
Topr
-40
°C
Storage Temperature
Tstg
-40
°C
ECS - FREQUENCY ABBREVIATION
LOAD
CAPACITANCE
PACKAGE
CUSTOM OPTIONS
Tolerance
PACKAGING
Operating Temp
PAD CONNECTIONS
In/Out
Ground
Out/In
No Connect
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
ECX-1210B SMD CRYSTAL
• Low Power RTC Applications
such as STM32 AN2867
• 1.2 x 1.0 mm Footprint
• Extended Temp. Range
• RoHS Compliant
• Applications: Smartphones,
wireless modules, wearable
devices
DIMENSIONS (mm)
PART NUMBERING GUIDE: Example ECS-.327-12.5-1210B-CN-TR
Figure 2) Suggested Land Pattern
Figure 1) Top, Side, and Bottom views
.327 = 32.768 KHz
12.5 = 12.5 pF
9 = 9 pF
7 = 7 pF
6 = 6 pF
-1210B = ECX-1210B
Blank = ±20 ppm
* C = ± 10 ppm
The ultra-miniature 4-Pad ECX-1210B is a very compact SMD
Tuning Fork Crystal. The 1.2 x 1.0 x 0.35 mm ceramic package is
the smallest in it’s class. This is very popular with small
wearables and medical devices.
TR = Tape
& Reel
5K/Reel
ECX-1210B
32.768 KHz
SMD Tuning Fork Crystal
Rev.2020
ECS
* Contact ECS for availability
Request a Sample
* Specify options in part number
M = -20 ~ +70°C
N = -40 ~ +85°C
P = -40 ~ +105°C
15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com
SOLDER PROFILE
Peak solder Temp +260°C Max 10 sec Max.
2 Cycles Max.
MSL 1, Lead Finish Au
POCKET TAPE DIMENSIONS (mm)
ECX-1210B
32.768 KHz
SMD Tuning Fork Crystal
Figure 1) Suggested Reflow Profile