Comus-International-BFH-2C-05

1 Form C  

Relays  

(

)

1A/1B 1

0

W

att!  

Part Number: BFH Series  

Multi-Pole Instrumentation Reed Relays – 2 Form A, 3 Form A, 1 Form C, and 2 Form C  

Product Data Sheet  

NEW!  

PICTURE  

FEATURES  

• Multi-pole designs 2 Form A, 3 Form A, 1 Form C (1A/1B), and 2 Form C  

• High Reliability Instrumentation Grade  

sputtered Ruthenium Form A contacts  

reed switch with  

• Optional Electrostatic or Coaxial Shield (BFH-2A & BFH-1C Only)  

• High Insulation Resistance: 10

12

Ω MIN (Form 2A, 3A & 1C) & 10

9

Ω (Form 2C)  

• Metal Cover (reduces magnetic interaction)  

• Industry Standard Packages  

• Custom Designs Available  

CIRCUIT DIAGRAM

 

(

T

o

p View)  

8

1

5

8

1

7

6

5

8

7

6

5

8

1

7

2

6

5

2

3

4

2

3

4

1 –  

+ 3  

4

3

4

BFH-2A  

BFH-3A  

NEW!

BFH-1C  

BFH-2C  

ORDERING INFORMATION  

Series  

Form  

Coil  

Options  

2A  

3A  

1C*  

2C  

05  

12  

E =

 

Electrostatic Shield (BFH-2A & BFH-1C Only)  

C =

 

Coaxial Shield (BFH-2A & BFH-1C Only)  

BFH  

Part Number Example:

 

BFH-XX-XXX  

BFH-2A-12E = 2 form A, 12 Volt Coil with Electrostatic Shield  

NOTE:

Model BFH-2A & BFH-1C, pin #6 is tied to optional electrostatic shield, pins #6 & #7 are tied to optional coaxial shield.  

*1C is polarity sensitive, positive (+) voltage must be applied to coil pin #3. Break-Before-Make is not guaranteed.  

DIMENSIONS  

0.210  

0.810 (20.57)  

(5.33)  

0.370  

(9.40)  

0.020  

(0.50)  

0.138  

(3.50)  

Ø 0.018  

(Ø 0.45)  

0.10  

(2.54)  

0.500 (12.70)  

0.700 (17.78)  

1

8

2

7

3

6

4

5

BOTTOM VIEW  

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  

©2017 Copyright Comus International, 454 Allwood Road, Clifton NJ 07012, USA  

Rev: 2

 

– Date:

 

Oct/2/2017 – Signature:

 

BR  

An ISO 9001 Certified Company  

1 Form C  

Relays  

(

)

1A/1B 1

0

W

att!  

Part Number: BFH Series  

Multi-Pole Instrumentation Reed Relays – 2 Form A, 3 Form A, 1 Form C, and 2 Form C  

Product Data Sheet  

NEW!  

COIL DATA-STANDARD TYPE (at 20

˚

C)  

MUST OPERATE  

VOLTAGE MAX  

[V] at 20°C  

MUST RELEASE  

VOLTAGE MIN  

[V] at 20°C  

NOMINAL VOLTAGE  

DC±10% [V]  

COIL RESISTANCE  

±

10% (

Ω

)  

MAX COIL  

VOLTAGE [V]  

PART NUMBER  

BFH-2A  

BFH-3A  

BFH-2C  

5

12  

5

175  

1000  

230  

3.8  

9.0  

3.8  

9.0  

0.4  

1.0  

0.4  

1.0  

7

16  

7

NEW!  

BFH-1C  

12  

1000  

16  

CONTACT RATING  

NEW!  

REL

A

Y

M

ODEL  

2A & 3A  

10 W  

1C (1A/1B)  

10 W  

2C  

Max Contact Rating  

Max Switching Voltage  

Max Switching Current  

Max Carry Current  

5 W  

100 VDC  

0.25 A  

1.0 A  

200 VDC  

0.5 A  

200 VDC  

0.5 A  

1.5 A  

1.5 A  

SPECIFICATIONS  

REL

A

Y

M

ODEL  

2A & 3A  

150 mΩ  

250 VDC  

1000 VDC  

1000 VDC  

10

12  

1C (1A/1B)  

150 mΩ  

2C  

200 mΩ  

200 VDC  

N/A  

Static Contact Resistance (Initial)  

Dielectric Strength Between Contacts (Min)  

Dielectric Strength Contacts to Shield (Min)  

Dielectric Strength Contacts / Shield to Coil (Min)  

250 VDC  

1000 VDC  

1000 VDC  

10

12  

1000 VDC  

10

9  

Insulation Resistance Between all Isolated pins at 100V 25

°

C, 40%RH (Min)  

Capacitance – Typical No Shield  

Capacitance – Typical Shield Guarding  

Operate Time – Including Bounce – Typical  

Release Time – Typical  

0.8 pF  

0.8 pF  

2.0 pF  

N/A  

0.2 pF  

0.2 pF  

0.5 mS  

0.5 mS  

1.5 mS  

2.0 mS  

0.15 mS  

0.5 mS  

Vibration  

20G  

Shock  

50G  

Operating

T

e

mperature  

-20

°

C to +85

°

C  

-40

°

C to +100

°

C  

500 x 10

6

Ops  

Storage

T

e

mperature  

500 x 10

6

Ops  

100 x 10

6

Ops  

Life Expectancy (Signal Level 1.0V, 10mA) (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  

©2017 Copyright Comus International, 454 Allwood Road, Clifton NJ 07012, USA  

Rev: 2

 

– Date:

 

Oct/2/2017 – Signature:

 

BR  

An ISO 9001 Certified Company