Omega Products CY670A-CO User Manual

T-3

tolerance band (E), which
is available only as a bare
die. For applications
requiring greater accuracy,
CY670-SD diodes are
available with calibration
across the full 1.4 to 500 K
temperature range.

The CY670E bare die sensor
provides the smallest physical size
and fastest thermal response time
of any silicon diode on the market
today. This is an important
advantage for applications where
size and thermal response time are
critical, including focal plane arrays
and high temperature
superconducting filters for cellular
communication.

General tolerence of ±0.127 (±0.005) unless otherwise noted.

Approx.

0.042

(1.080)

20.066
(0.790)

0.102

(0.004)

3.175

(0.125)

ø0.381
(0.015)

0.075

(1.905)

0.027

(0.698)

⻬ Best Accuracy Across

the Widest Useful
Temperature Range,

1.4 to 500 K

⻬ Tightest Tolerances

for Applications from
30 to 500 K

⻬ Rugged, Reliable

SD Package (Designed
to Withstand Repeated
Thermal Cycling and
Minimize Sensor
Self-Heating)

⻬ Conformance to

Standard Curve CY670
(Temperature Response
Curve Variety of
Packaging Options)

⻬ Bare Die Sensors with

the Smallest Size and
Fastest Thermal
Response Time

⻬ Non-Magnetic Sensor

The CY670 Series silicon diodes
offer a more accurate reading of
temperature ranges compared to
previously marketed silicone diodes.
Conforming to the curve CY670
standard voltage vs. temperature
response curve, sensors within the
CY670 Series are interchangeable,
and for many applications they do
not require individual calibration.
CY670 Series sensors in the SD
package are available in 5 tolerance
bands—3 for general cryogenic use
across the 1.4 to 500 K temperature
range, and 1 that offers superior
accuracy for applications from 30 K
to room temperature. The CY670
Series sensors also come in a

Specifications

Standard Curve: Curve CY670,

see chart next page

Recommended Excitation:

10 µA, ±0.1%

Max Reverse Voltage: 60V
Max Current Before Damage:

1 mA, continuous or 100 mA, pulsed

Dissipation at Recommended
Excitation: 16 µW @ 4.2 K;

10 µW @ 77 K; 5 µW @ 300 K

CY670A-SD, $575,
shown smaller
than actual size.

Dimensions: mm (in)
ø=diameter

CY670-SD

Cryogenic
Temperature Sensors

Silicon Diodes

CY670 Series

Starts at

$

220

T-4

T

Thermal Response Time:

SD Model: Typical <10 ms @

4.2 K, 100 ms @ 77 K,
200 ms @ 305 K
BR Model: 1 ms @ 4.2 K,
13 ms @ 77 K, 20 ms @ 305 K

Use in Radiation: Recommended for
use only in low level radiation
Use in Magnetic Field: Not
recommended for use in magnetic field
applications below 60 K; low magnetic
field dependence when used in fields
up to 5 tesla above 60 K

Reproducibility(*): ±10 mK @ 4.2 K

(*) Short-term reproducibility data is obtained

by subjecting sensor to repeated thermal
shocks from 305 to 4.2 K.

Dimensions: mm (in)

Range Limit Limit
of Use Min Max

CY670-SD 1.4 K 500 K
CY670E-BR 1.4 K 500 K

Typical Long Term

Temperature Accuracy Accuracy (*)

1.4 K ±12 mK —

4.2 K ±12 mK 10 mK
10 K ±12 mK —
77 K ±22 mK 40 mK
300 K ±32 mK 25 mK
500 K ±50 mK —

Temperature Tolerance at Temperature Range
Band 2 to 30 K 30 to 100 K 100 to 305 K 305 to 500 K
A (1) ±0.25 K ±0.25 K ±0.50 K ±0.50 K
B (2) ±0.50 K ±0.50 K ±0.50 K ±0.33% of T

(1.01 to 1.65 K)

C (3) ±1.0 K ±1.0 K ±1.0 K ±0.5% of T

(1.53 to 2.50 K)

D (4) ±1.5 K ±0.25 K ±0.30 K ±0.1% of T
(PRT Band) (0.305 to 0.500 K)

E ±1.0 K ±0.25 K ±0.25% of T ±0.25% of T
(Bare Chip Band) (0.25 to 0.76 K) (0.76 to 1.25 K)

Calibrated Accuracy

Temperature Volts dV/dT (mV/K)

1.4 K 1.64 -12.5

4.2 K 1.58 - 31.6
10 K 1.38 -26.8
77 K 1.03 -1.73
305 K 0.560 -2.30

Temperature Response Data Table
(Typical for CY670)

Tolerance Bands for the CY670 Series Diode Thermometer

(*) Long term stability data is obtained by subjecting sensor

to 200 thermal shocks from 305 to 77 K.

Model No. Price Description
MA-2024 $110 Reference Book: Concise Handbook of Mathematics and Physics

Accessories

CY670E-BR

0.432

(0.017)

Bottom of

die collector

( + Connection)

0.102

(0.004)

0.406

(0.016)

0.102

(0.004)

Base

( – Connection)

Emitter

(No connection)

0.178

(0.007)

CY670-LR

CY670-ET

CY670-BO

CY670-CU

4-leads

CY670-MT

914.4

(36.0)

0.762

(0.030)

4.343

(0.171)

ø0.127

(ø0.005)

ø7.950

(ø0.313)

ø2.946

(ø0.116)

General tolerance of ±0.127 (±0.005) unless otherwise noted

36 AWG Quad-Lead

phosphor-bronze wire

(914.4 [36.0] long)

TM

Dimensions: mm (in)

Dimensions: mm (in)

Accuracy Band Availability

12 3 4—

Dimensions: mm (in)

Accuracy Band Availability

12 3 4—

Dimensions: mm (in)

Accuracy Band Availability

12 3 4—

Dimensions: mm (in)

Accuracy Band Availability

12 3 4—

Dimensions: mm (in)

Accuracy Band Availability

12 3 4—

T-5

Accuracy Band Availability

12 3 4—

CY670-SD

0.075

(1.905)

Approx.

0.042

(1.080)

General tolerence of ±0.127 (±0.005) unless otherwise noted.

3.175

(0.125)

20.066
(0.790)

0.102

(0.004)

ø0.381
(0.015)

0.027

(0.698)

2.661

(0.105)

General tolerance of ±0.127 (±0.005)
unless otherwise noted

ø2.946 (ø0.116)

through hole

Beryllium oxide heat sink chip

0.38 (0.015)

3.175

+0.127

-0.000

19.304
(0.760)

(0.300)

(0.125 )

7.620

+0.005

-0.000

0.381

(0.015)

3.810

(0.150)

ØØ3.099

(

Ø0.122)

0.102

(0.004)

2.667

(0.105)

8.890

(0.350)

0.102

(0.004)

General tolerance of ±0.127 (±0.005)
unless otherwise noted

19.304

(0.760)

5.207

(0.205)

3.175 (0.125)

To Order

(Specify Model Number)

Model No. Price Description
CY670A-SD $575 Cryogenic sensor, flat sensor, band A
CY670B-SD 299 Cryogenic sensor, flat sensor, band B
CY670C-SD 220 Cryogenic sensor, flat sensor, band C
CY670D-SD 272 Cryogenic sensor, flat sensor, band D
CY670A-CU 650 Cryogenic sensor, small copper bobbin, band A
CY670B-CU 375 Cryogenic sensor, small copper bobbin, band B
CY670C-CU 299 Cryogenic sensor, small copper bobbin, band C
CY670D-CU 335 Cryogenic sensor, small copper bobbin, band D
CY670A-CO 599 Cryogenic sensor, clamp style, band A
CY670B-CO 330 Cryogenic sensor, clamp style, band B
CY670C-CO 255 Cryogenic sensor, clamp style, band C
CY670D-CO 290 Cryogenic sensor, clamp style, band D
CY670A-LR 599 Cryogenic sensor, half rounded cylinder, band A
CY670B-LR 388 Cryogenic sensor, half rounded cylinder, band B
CY670C-LR 255 Cryogenic sensor, half rounded cylinder, band C
CY670D-LR 292 Cryogenic sensor, half rounded cylinder, band D
CY670A-CY 670 Cryogenic sensor, large copper bobbin, band A
CY670B-CY 388 Cryogenic sensor, large copper bobbin, band B
CY670C-CY 333 Cryogenic sensor, large copper bobbin, band C
CY670D-CY 365 Cryogenic sensor, large copper bobbin, band D
CY670A-ET 599 Cryogenic sensor, screw in, band A
CY670B-ET 388 Cryogenic sensor, screw in, band B
CY670C-ET 255 Cryogenic sensor, screw in, band C
CY670D-ET 289 Cryogenic sensor, screw in, band D
CY670A-MT 599 Cryogenic sensor, metric screw in, band A
CY670B-MT 388 Cryogenic sensor, metric screw in, band B
CY670C-MT 255 Cryogenic sensor, metric screw in, band C
CY670D-MT 289 Cryogenic sensor, metric screw in, band D
CY670A-BO 650 Beryllium oxide heat sink block, band A
CY670B-BO 350 Beryllium oxide heat sink block, band B
CY670C-BO 260 Beryllium oxide heat sink block, band C
CY670D-BO 290 Beryllium oxide heat sink block, band D
CYC670E-BR-10 1460 Cryogenic sensor, bare ship, package of 10

MOST POPULAR MODELS HIGHLIGHTED!

Ordering Examples: CY670A-SD, cryogenic sensor, $575.
CY670B-CU, cyrogenic sensor, small copper bobbin, band B, $375.

CY670-CY

CY670-CO

Accuracy Band Availability

12 3 4—

ø6.350

(ø0.250)

General tolerance of ±0.127 (±0.005)

unless otherwise noted

7.925

(0.312)

5.080

(0.200)

8.077

(0.318)

11.252
(0.443)

3.810

(0.150)

4-40 shoulder screw

Dimensions: mm (in)
ø=diameter

Dimensions: mm (in)
ø=diameter

T-6

T

Accuracy Band Availability

—2 3 4—

ø2.997

(ø0.118)

through hole

ø14.224
(ø0.560)

2-30 AWG PFA coated stranded copper wire
(914.4 [36] long)

General tolerance of ±0.127 (±0.005) unless otherwise noted

0.200
(5.080)

One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | [e-mail]

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