Datasheet SHT7x
www.sensirion.com
Version 4.1 – July 2008
9/11
SHT7x have been tested according to the test conditions
given in Table 11. 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.
Please contact Sensirion for detailed information.
Environment Standard
Results 16
HTOL
125°C, 1000 h
Within
specifications
TC
-40°C - 125°C, 500 cycles
Acc. JESD22-A104-C
Within
specifications
THU
85°C / 85%RH, 1000h
Within
specifications
ESD immunity MIL STD 883E, method 3015
(Human Body Model at ±2kV)
Qualified
Latch-up
force current of ±100mA with
Tamb = 80°C, acc. JEDEC 17
Qualified
Table 11: Qualification tests: HTSL = High Temperature Storage
Lifetime, TC = Temperature Cycles, UHST = Unbiased Highly
accelerated temperature and humidity Test, THU = Temperature
humidity unbiased
6 Packaging
6.1
Packaging type
The device is supplied in a single-in-line pin type package.
The sensor housing consists of a Liquid Crystal Polymer
(LCP) cap with epoxy glob top on a standard 0.6 mm FR4
substrate. The sensor head is connected to the pins, by a
small bridge to minimize heat conduction and response
times. The pins are made of Cu/Be alloy coated with
1.3 m Ni and 0.5 m Au, which are soldered to the FR4
substrate by lead-free solder paste. The gold plated back
side of the sensor head is connected to the GND pin. A
100nF capacitor is mounted on the back side between
VDD and GND. The device is fully RoHS and WEEE
compliant – thus it is free of of Pb, Cd, Hg, Cr(6+), PBB
and PBDE.
Size including pins is 19.5 x 5.08 x 3.1mm. Total weight:
168 mg, weight of sensor head: 73 mg.
All pins are Au plated to avoid corrosion. They can be
soldered or mate with most 1.27 mm (0.05’’) sockets, for
example: Preci-dip / Mill-Max 851-93-004-20-001 or
similar.
16 According to accuracy and long term drift specification given on Page 2.
6.2
Traceability Information
All SHT7x are marked with an alphanumeric, three digit
code on the chip cap (for reference: V3 sensors were
labeled with numeric codes) – see “B2G” on Figure 1. The
lot numbers allow full traceability through production,
calibration and testing. No information can be derived from
the code directly, respective data is stored at Sensirion.
Labels on the reels are displayed in Figures 14 and 15,
they both give traceability information.
Figure 14: First label on reel: XX = Sensor Type (71 for SHT71),
04 = Chip Version (V4), Y = last digit of year, RRRR = number of
sensors on reel, TTTT = Traceability Code.
Figure 15: Second label on reel: For Device Type and Part
Order Number please refer to Table 12, Delivery Date (also
Date Code) is date of packaging of sensors (DD = day, MM =
month, YYYY = year), CCCC = number of order.
6.3
Shipping Package
SHT7x are shipped in 32mm tape at 50pcs each – for
details see Figure 16 and Table 12. Reels are individually
labeled with barcode and human readable labels, see
section 6.2.
Sensor Type
Packaging
Quantity
Order Number
SHT71
Tape Stripes
50
1-100092-04
SHT75
Tape Stripes
50
1-100071-04
Table 12: Packaging types per sensor type.
Dimensions of packaging tape is given in Figure 16. All
tapes have a 7 pockets empty leader tape (first pockets of
the tape) and a 7 pockets empty trailer tape (last pockets
of the tape).
Device Type:
1-100PPP-04
Description:
Humidity & Temperature Sensor
SHTxx
Part Order No.
1-100PPP-04 or Customer Number
Date of Delivery: DD.MM.YYYY
Order Code:
45CCCC / 0
Lot No.:
XX0-04-YRRRRTTTT
Quantity:
RRRR
RoHS:
Compliant
Lot No.
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