SHT21P SENSIRION, SHT21P Datasheet - Page 7

• Manufacturer Part Number: SHT21P
• Description: SENSOR, HUMIDITY & TEMP
• Manufacturer: SENSIRION

Specifications of SHT21P

• Humidity Range: 0 - 100% RH
• Sensor Output: Analogue - PWM Interface
• Sensor Terminals: SMD
• Response Time: 8s
• Supply Voltage Range: 2.1V To 3.6V
• Accuracy: 2% RH
• Supply Voltage: 3VDC
• Termination: RoHS Compliant
• Capacitance: 0µF
• Rohs Compliant: Yes
• Sensing Accuracy: 2%
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 2 - 1 Year

Datasheet SHT21P
7 Environmental Stability
The SHT2x sensor series were tested according to AEC-
Q100 Rev. G qualification test method. Sensor
specifications are tested to prevail under the AEC-Q100
temperature grade 2 test conditions listed in Table 9
Sensor performance under other test conditions cannot be
guaranteed and is not part of the sensor specifications.
Especially, no guarantee can be given for sensor
performance in the field or for customer’s specific
application.
Table 5: Qualification tests: HTOL = High Temperature
Operating Lifetime, TC = Temperature Cycles, UHST =
Unbiased Highly accelerated Stress Test, THB = Temperature
Humidity Biased. For details on ESD see Sect. 4.1.
If sensors are qualified for reliability and behavior in
extreme conditions, please make sure that they
experience same conditions as the reference sensor. It
should be taken into account that response times in
assemblies may be longer, hence enough dwell time for
the measurement shall be granted. For detailed
information please consult Application Note “Qualification
Guide”.
8 Packaging
8.1
SHT2x sensors are provided in DFN packaging (in
analogy with QFN packaging). DFN stands for Dual Flat
No leads.
The sensor chip is mounted to a lead frame made of Cu
and plated with Ni/Pd/Au. Chip and lead frame are over
molded by green epoxy-based mold compound. Please
note that side walls of sensors are diced and hence lead
frame at diced edge is not covered with respective
protective coating. The total weight of the sensor is 25mg.
13
14
www.sensirion.com
Environment Standard
THB
ESD immunity HBM 4kV, MM 200V, CDM
Latch-up
HTOL
TC
UHST
Sensor operation temperature range is -40 to 105°C according to AEC-Q100
temperature grade 2.
According to accuracy and long term drift specification given on Page 2.
Packaging Type
125°C, 408 hours
-50°C - 125°C, 1000 cycles
130°C / 85%RH / ≈2.3bar, 96h Within
85°C / 85%RH, 1000h
750V/500V (corner/other pins)
force current of ±100mA with
T
amb
= 125°C
Results
Within
specifications
Within
specifications
specifications
Within
specifications
Qualified
Qualified
14
Version 1.1 – May 2010
13
.
8.2
For SHT2x a filter cap SF2 will be provided. It is designed
for fast response times and compact size. Please find the
datasheet on Sensirion’s web page.
For testing of SHT2x sensors sockets, such as from
Plastronics,
recommended (see e.g. www.locknest.com).
8.3
All SHT21 are laser marked with an alphanumeric, five-
digit code on the sensor – see Figure 11.
Figure 11 Laser marking on sensor. For details see text.
The marking on the sensor consists of two lines with five
digits each. The first line denotes the sensor type
(SHT21). The first digit of the second line defines the
output mode (D = digital, Sensibus and I2C, P = PWM, S =
SDM). The second digit defines the manufacturing year (0
= 2010, 1 = 2011, etc.). The last three digits eventually
represent an alphanumeric tracking code. That code can
be decoded by Sensirion only and allows for tracking on
batch level through production, calibration and testing –
and will be provided upon justified request.
Reels are also labeled, as displayed in Figure 12 and
Figure 13, and give additional traceability information.
Figure 12: First label on reel: XX = Sensor Type (21 for SHT21),
O = Output mode (D = Digital, P = PWM, S = SDM), NN = Chip
Version, Y = last digit of year, RRR = number of sensors on reel
divided by 10 (200 for 2000 units), TTTTT = Traceability Code.
Lot No.:
Quantity:
RoHS:
Lot No.
Filter Cap and Sockets
Traceability Information
part
XXO-NN-YRRRTTTTT
RRRR
Compliant
SHT21
P0AC4
number
10LQ50S13030
are
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