SHT21S SENSIRION, SHT21S Datasheet - Page 8

• Manufacturer Part Number: SHT21S
• Description: SENSOR, HUMIDITY & TEMP
• Manufacturer: SENSIRION

Specifications of SHT21S

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

Datasheet SHT21S
Figure 12 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 Figures 19 and 20,
and give additional traceability information.
Figure 13: 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.
Figure 14: Second label on reel: For Device Type and Part
Order Number (See Packaging Information on page 2), Delivery
Date (also Date Code) is date of packaging of sensors (DD =
day, MM = month, YYYY = year), CCCC = Sensirion order
number.
8.4
SHT2x are provided in tape & reel shipment packaging,
sealed into antistatic ESD bags. For SHT21S standard
packaging sizes are 400, 1500 and 5000 units per reel.
www.sensirion.com
Lot No.:
Quantity:
RoHS:
Lot No.
Device Type:
Description:
Part Order No.
Date of Delivery: DD.MM.YYYY
Order Code:
Shipping Package
XXO-NN-YRRRTTTTT
RRRR
Compliant
1-100PPP-NN
Humidity & Temperature Sensor
SHTxx
1-100PPP-NN or Customer Number
45CCCC / 0
SHT21
S0AC4
Version 1.1 – May 2010
Each reel contains 440mm (55 pockets) header tape and
200mm (25 pockets) trailer tape.
The drawing of the packaging tapes with sensor
orientation is shown in Figure 15. The reels are provided in
sealed antistatic bags.
Figure 15 Sketch of packaging tape and sensor orientation.
Header tape is to the right and trailer tape to the left on this
sketch.
R0.3 MAX
1.3
0.3
4.0
2.0
3.3
8.0
Ø0.15 MIN
Ø0.15 MIN
R0.25
0.25
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