Product Specification:
Thermopile Sensor
HTS-E21-F3.91/F4.26

HEIMANN Sensor GmbHAuthor(s): W. Leneke,
J. Schieferdecker

Rev.: R 03 / 12.08.2011

Page 1 of 6

Specification Thermopile Sensor
HTS-E21-F3.91/F4.26
Part No. 1015

R 03Author(s):W. Leneke, M. Simon

Revision History
VersionDateRemarks

R 01

04.08.2005

1. Draft of HEIMANN Sensor GmbH

R 02

30.06.2010

general update

R 03

12.08.2011

Update parameter

Spec_ThermopileSensor_HTS-E21-F3.91_4.26_R03_PN1015.doc© HEIMANN Sensor GmbH

Product Specification:
Thermopile Sensor
HTS-E21-F3.91/F4.26

HEIMANN Sensor GmbHAuthor(s): W. Leneke,
J. Schieferdecker

Rev.: R 03 / 12.08.2011

Page 2 of 6

1. Purpose, Scope
The new thermopile infrared sensor from Heimann Sensor, comprising a new type CMOS
compatible sensor chip plus a thermistor reference chip, features good sensitivity, small
temperature coefficient of sensitivity as well as high reproducibility and reliability.
The sensor will be available in standard transistor outline packages in different sizes,
equipped with an IR transmitting filter window (transmission curve as shown below).

2. Absolute Maximum Ratings
Parameter

SymbolLimitsMin

Typ.

UnitsConditions

Maxstorage temperature-40120°C

operating temperature-20120°C

3. General and Electrical Parameter Thermopile
Parameter

SymbolLimitsMinelement size
resistance

RTP

69

84

Conditions

mm2

absorbing areakΩ-40°C to 100°C%/K

25°C
Heimann Sensor test set-up “F1”:
IR source HSL-EMIRS200,6.5V, 4.5Hz, distance 15mmMax

1.2*1.2

TC of resistancesignal voltage
channel 3.9
signal voltage
channel 4.26

Typ.

Units

1120.02VS

65100125µV

VS120155185µV

noise voltage

VRMS

37

time constantτ10nV/√Hz
13

Spec_ThermopileSensor_HTS-E21-F3.91_4.26_R03_PN1015.doc

r.m.s., 25°Cms© HEIMANN Sensor GmbH

Product Specification:
Thermopile Sensor
HTS-E21-F3.91/F4.26

HEIMANN Sensor GmbHAuthor(s): W. Leneke,
J. Schieferdecker

Rev.: R 03 / 12.08.2011

Page 3 of 6

4. General and Electrical Parameter Thermistor
TypeThermistor 100kΩ

Parameter

SymbolLimits
Min

Typ.

Max

Units

Conditions

resistance

RTH

95

100

105kΩ

25°C

BETA-value

β3900

39403980

K25°C/50°C

T / °C

Rth_min / Ohm

Rth_nom / Ohm

Rth_max / Ohm-301557900

1655000

1753100-25

11633201234000

1306680-20875826928700981974-15665010704500744190-10508730538500568370-53921084146004372920304466321700338934523807225140026472810187444197800208056151485681566001646322011840412480013109625

95000

100000105000

30

76537

80630

84713

35

62032

65380

68738

40

50543

53310

56077

45

41386

43680

45984

5034070

35980

37890

55

28174

29770

31366

60

23405

24750

26095

6519536

20670

21804

70

16383

17340

18297

75

13788

14600

15422

80

11653

12350

13047

85

9890

10480

11080

90

8421

8930

9444

95

7197

7635

8076

100

6172

6551

6935

Spec_ThermopileSensor_HTS-E21-F3.91_4.26_R03_PN1015.doc© HEIMANN Sensor GmbH

Product Specification:
Thermopile Sensor
HTS-E21-F3.91/F4.26

HEIMANN Sensor GmbHAuthor(s): W. Leneke,
J. Schieferdecker

Rev.: R 03 / 12.08.2011

Page 4 of 6

5. Filter Characteristics
Filter F3.91
Parameter
Center wavelength(CWL)
Half power bandwidth(HPB)
HPB/CWL
Peak transmittanceBlocking

Min

Limits
Typ.

Max

3.87

3.91

3.95µm

7090

110nm

2.3%%%%%

76
Taverage < 0.1%
Tpeak < 1%
Tpeak < 1%

Filter F4.26
Parameter
Center wavelength(CWL)
Half power bandwidth(HPB)
HPB/CWL
Peak transmittance
Blocking

Units Conditions

Min

Limits
Typ.

Max

4.22

4.26

4.32µm

160

180

200nm

from UV to band passfrom UV to band passfrom band pass to 12µm

Units Conditions

4.273
Taverage < 0.1%
Tpeak < 1%
Tpeak < 1%

Spec_ThermopileSensor_HTS-E21-F3.91_4.26_R03_PN1015.doc%%%%%from UV to band passfrom UV to band passfrom band pass to 12µm

© HEIMANN Sensor GmbH

Product Specification:
Thermopile Sensor
HTS-E21-F3.91/F4.26

HEIMANN Sensor GmbHAuthor(s): W. Leneke,
J. Schieferdecker

Rev.: R 03 / 12.08.2011

Page 5 of 6

Filter F3.91 / F4.26

Transmission / %1009080

Filter F 3.91

Filter F 4.26

70
60
50
40
30
20
1003,63,844,24,44,64,8

Wavelength / µm

Spec_ThermopileSensor_HTS-E21-F3.91_4.26_R03_PN1015.doc© HEIMANN Sensor GmbH

HEIMANN Sensor GmbHAuthor(s): W. Leneke,
J. Schieferdecker

Rev.: R 03 / 12.08.2011

Product Specification:
Thermopile Sensor
HTS-E21-F3.91/F4.26
Page 6 of 6

6. Drawing and Pin Assignment

7. Liability
Changes or modifications at the product which haven't influence to the performance
and/or quality of the device haven't to be announced to the customers in advance.
Customers are requested to consult with Heimann Sensor representatives before theuse of Heimann Sensor products in special applications where failure or abnormal
operation may directly affect human lives or cause physical injury or property
damage. The company or their representatives will not be responsible for damage
arising from such use without prior approval.

Spec_ThermopileSensor_HTS-E21-F3.91_4.26_R03_PN1015.doc© HEIMANN Sensor GmbH