Comus-International-BFM-1C-12CW

+125°C  

Relays  

Operation  

Part Number: BFM-CW Series  

1A & 1C Instrumentation Reed Relays for -40

°

C to +125

°

C Operation  

Product Data Sheet  

PICTURE  

FEATURES  

• Wide Operating

T

e

mperature Range -40°C to +125°C  

• High Reliability Instrumentation Grade (  

sputtered Ruthenium Form A contacts  

• Industry Standard Packages  

) reed switch with  

• Hermetically sealed contacts for long life  

• Standard Coaxial shield (50Ω impedance)  

• High Insulation Resistance: 10

12

Ω MIN (Form A)  

• Metal Cover (reduces magnetic interaction)  

CIRCUIT DIAGRAM

 

(

T

o

p View)  

8

1

7

6

5

8

7

6

5

2

3

4

1

2

3

4

1 FORM A  

1 FORM C  

Unused pins are omitted  

ORDERING INFORMATION  

Series  

Form  

Coil  

Standard Features  

1A  

1C  

05  

12  

C =

 

Coaxial Shield (Tied to pins #6 & #7)  

W = Wide

T

e

mperature  

BFM  

Part Number Example:

 

BFM-XX-XXXX  

BFM-1A-05CW = 1 form A, 5 Volt Coil with Coaxial Shield and Wide

T

e

mperature  

DIMENSIONS  

0.250  

(6.35)  

0.820 (20.83)  

0.300 (7.62)  

0.020  

(0.51)  

0.125 (3.18)  

Ø 0.018  

(Ø 0.45)  

0.100  

(2.54)  

0.075  

(1.90)  

0.100  

(2.54)  

0.600 (15.24)  

0.700 (17.78)  

0.060  

(1.50)  

Drawings not to scale.  

All dimensions in inches (mm) nominal.  

As part of the company policy of continued product improvement, specifications may change without notice. Our sales office will be pleased to help you with the latest information on this product range and  

the details of our full design and manufacturing service. All products are supplied to our standard conditions of sale unless otherwise agreed in writing.  

Phone: (1) 973 777 6900  

Fax: (1) 973 777 8405  

Belgium: + 32 (0)12 390400 – Comus Europe Ltd (Assemtech) UK: +44 (0) 1255 862236 – Germany: +49 (0)911 923 15 943 – Netherlands: +31(0)45 54 39 345 – India: +(91) (44) 42023510  

©2016 Copyright Comus International, 454 Allwood Road, Clifton NJ 07012, USA  

1 / 2016  

An ISO 9001 Certified Company  

+125°C  

Relays  

Operation  

Part Number: BFM-CW Series  

1A & 1C Instrumentation Reed Relays for -40

°

C to +125

°

C Operation  

Product Data Sheet  

COIL DATA-STANDARD TYPE 1 FORM A (at 20

˚

C)  

NOMINAL COIL  

VOLTAGE (VDC)  

COIL RESISTANCE  

MAX OPERATE  

VOLTAGE (VDC)  

MAX RELEASE  

VOLTAGE (VDC)  

MAX COIL  

VOLTAGE (VDC)  

±

10% (

Ω

)  

5

240  

2.5  

6.7  

0.4  

1

7

12  

1500  

16  

COIL DATA-STANDARD TYPE 1 FORM C (at 20

˚

C)  

NOMINAL COIL  

VOLTAGE (VDC)  

COIL RESISTANCE  

MAX OPERATE  

VOLTAGE (VDC)  

MAX RELEASE  

VOLTAGE (VDC)  

MAX COIL  

VOLTAGE (VDC)  

±

10% (

Ω

)  

5

240  

2.5  

6.7  

0.4  

1

7

12  

1500  

16  

CONTACT RATING  

REL

A

Y

M

ODEL  

1A  

10 W  

1C  

5 W  

Max Switching Power  

Max Switching Voltage  

Max Switching Current  

Max Carry Current  

200 VDC  

0.5 A  

150 VDC  

0.25 A  

1 A  

1.5 A  

SPECIFICATIONS  

REL

A

Y

M

ODEL  

1A  

1C  

Contact Resistance (Initial)  

100 mΩ  

0.5 ms  

0.1 ms  

150 mΩ  

1.0 ms  

2.0 ms  

Operate Time – including Bounce (at Nominal Voltage) (Typical)  

Release Time (Typical)  

Insulation Resistance Between all Isolated pins  

(+20°C, 40%RH, 100V) (MIN)  

10

12

Ω  

10

9

Ω  

Dielectric Strength: Across Contacts (DC/Peak AC Resistive) (MIN)  

Dielectric Strength: Contacts to Coil (DC/Peak AC Resistive) (MIN)  

350 V  

350 V  

200 V  

200 V  

Dielectric Strength: Contacts/Shield to Coil (DC/Peak AC Resistive) (MIN)  

1500 V  

1500 V  

Capacitance Across Open Contacts: Shield Floating/Guarding (Typical)  

1.0 / 0.3 pF  

2.0 / 1.0 pF  

Vibration  

20G  

50G  

Shock  

Operating

T

e

mperature  

Storage

T

e

mperature  

-40°C to 125°C  

-40°C to 125°C  

500 x 10

6

Ops  

100 x 10

6

Ops  

Life Expectancy (1.0

V

, 10mA Load) (Typical)  

As part of the company policy of continued product improvement, specifications may change without notice. Our sales office will be pleased to help you with the latest information on this product range and  

the details of our full design and manufacturing service. All products are supplied to our standard conditions of sale unless otherwise agreed in writing.  

Phone: (1) 973 777 6900  

Fax: (1) 973 777 8405  

Belgium: + 32 (0)12 390400 – Comus Europe Ltd (Assemtech) UK: +44 (0) 1255 862236 – Germany: +49 (0)911 923 15 943 – Netherlands: +31(0)45 54 39 345 – India: +(91) (44) 42023510  

©2016 Copyright Comus International, 454 Allwood Road, Clifton NJ 07012, USA  

1 / 2016  

An ISO 9001 Certified Company