AAS-920-308B - 09/2014

www.amphenol-sensors.com

© 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice.

Other company names and product names used in this document are the registered trademarks or

trademarks of their respective owners.

Amphenol

Advanced Sensors

Dissipation Constant

BR32

• Still air at 77°F (25°C): 0.285 mW/°C

• Still water at 77°F (25°C): 1.4 mW/°C

BR42

• Still air at 77°F (25°C): 0.33 mW/°C

• Still water at 77°F (25°C): 1.65 mW/°C

BR55

• Still air at 77°F (25°C): 0.5 mW/°C

• Still water at 77°F (25°C): 2.50 mW/°C

Power Rating (In Air)

BR32

• Maximum Power Rating: 0.035 W

• 100% Maximum Power To: 302°F (150°C)

• Derated to 0% at: 572°F (300°C)

BR42

• Maximum Power Rating: 0.042 W

• 100% Maximum Power To: 302°F (150°C)

• Derated to 0% at: 572°F (300°C)

BR55

• Maximum Power Rating: 0.050 W

• 100% Maximum Power To: 302°F (150°C)

• Derated to 0% at: 572°F (300°C)

Code

Letter

R vs T

Curve

25/125

Ratio

Nominal Resistance Range

at 77°F (25°C)

BR32

BR42

BR55

E

0

5.0

-

30 to 51

Ω

30 to 51

Ω

A

1

11.8

100 to 300

Ω

51 to 150

Ω

51 to 150

Ω

A

2

12.5

300 to 750

Ω

150 to 360

Ω

150 to 360

Ω

A

3

14

750 to 1.5 k

Ω

360 to 750

Ω

360 to 750

Ω

A

4

16.9

1.5 to 3.0 k

Ω

750 to 1.5 k

Ω

750 to 1.5 k

Ω

A

5

19.8

3.0 to 6.8 k

Ω

1.5 to 3.6 k

Ω

1.5 to 3.6 k

Ω

A

6

22.1

6.8 to 13 k

Ω

3.6 to 6.2 k

Ω

3.6 to 6.2 k

Ω

A

7

22.7

13 to 18 k

Ω

6.2 to 9.1 k

Ω

6.2 to 9.1 k

Ω

B

8

29.4

18 to 51 k

Ω

9.1 to 27 k

Ω

9.1 to 27 k

Ω

B

9

30.8

51 to 82 k

Ω

27 to 43 k

Ω

27 to 43 k

Ω

B

10

32.3

82 to 150 k

Ω

43 to 75 k

Ω

43 to 75 k

Ω

B

11

35.7

150 to 330 k

Ω

75 to 160 k

Ω

75 to 160 k

Ω

B

12

38.1

330 to 680 k

Ω

160 to 360 k

Ω

160 to 360 k

Ω

B

13

45

680 to 1.5 M

Ω

360 to 750 k

Ω

360 to 750 k

Ω

B

14

48.1

1.5 to 3.0 M

Ω

750 to 1.5 M

Ω

750 to 1.5 M

Ω

B

15

56.5

3.0 to 6.2 M

Ω

1.5 to 3.0 M

Ω

1.5 to 3.0 M

Ω

D

16

75.6

6.2 to 10 M

Ω

3.0 to 8.2 M

Ω

3.0 to 8.2 M

Ω

D

17

81

-

8.2 to 20 M

Ω

8.2 to 20 M

Ω

Options

• Non-standard resistance tolerances

• Non-standard resistance values

• Specify reference temperature(s) if it is not 77°F (25°C)

• Mounting in special housings or enclosures

• Longer continuous leads

• Welded or soldered extension leads; specify lead material,

diameter, length, and insulation, if any.

• Solderable or weldable/solderable leads

• Leads can be pre-tinned or treated for improved soldering

• Calibration_specify temperature(s)

• Interchangeable pairs or sets, R-vs-T curve matching; specify

temperature range(s) and tolerance(s)

• Special aging and conditioning for high reliability applications

*The zero-power resistance at 77°F (25°C), expressed in

Ω, is identified by a

three digit code number. The first two digits represent significant figures, and

the last digit specifies the number of zeros to follow. Example: 10k

Ω= “103”.

The standard resistance values are from the 24-Value series decade as specified

in Military Standard MS90178.

1.0 / 1.1 / 1.2 / 1.3 / 1.5 / 1.6 / 1.8 / 2.0 / 2.2 / 2.4 / 2.7 / 3.0

3.3 / 3.6 / 3.9 / 4.3 / 4.7 / 5.1 / 5.6 / 6.2 / 6.8 / 7.5 / 8.2 / 9.1

Ordering Information

The code number to be ordered may be specified as follows:

Code

Type

BR

Ruggedized bead structure

Code Diameter

11

11 mils

14

14 mils

16

16 mils

23

23 mils

32

32 mils

42

42 mils

55

55 mils

Code

Lead Configuration

K

Adjacent leads with stub ends glass coated

P

Opposite leads

Code

Material System Code

X

See table A or table B for code number

Code

Power

X

Zero-power resistance as 77°F (25°C)

(see note 2 for code number)

Code

Tolerance*

F

1

G

2

J

5

K

10

L

15

M

20

N

25

P

30

Q

40

R

50

S

BR -

____ - ____ - ____ - ____

- ____

Typical model number

Special tolerances are available upon request. Consult factory for special resistance tolerances, non-

standard resistances and/or non-standard temperatures.