1)

Special code3)

Notes:1) The data shown above are initial values.

2) To supply rated step voltage to coil is the foundation of relay proper operation. Please make sure the applied voltage to the coil reach at

rated values.

Please refer to the typical diagram below for single side stable relay. The "V_coil" is the rated voltage:

3) In case 5V of transistor drive circuit, it is recommended to use 4.5V type relay, and 3V to use 2.4V type relay.

4) For monostable relays，if you need to drop down voltage and hold mode after reliably operating,make sure that the effective value of

holding voltage is not less than 60% of the rated voltage.

5) Maximum voltage refers to the maximum voltage which relay coil could endure in a short period of time.

6) When user's requirements can't be found in the above table, special order allowed.

7) During the relay pick-up or drop-out processes, there are stages of contact pressure change, contact vibration and unstable contact etc.

When the voltage applied to coil is gradually changed, it will lengthen the unstable stage and affect relay endurance. To reduce this

influence, please apply step voltage(switching circuit) to relay coil.

RES2

RES1

GND

DIODE

V_coil

Port1

RELAY

VCC

V

ORDERING INFORMATION

Coil voltage

1.5, 2.4, 3, 4.5, 5, 6, 9, 12, 24VDC

HFD4 /

24

-L

Sort

Type

(XXX)

R

S

L: 1 coil latching

Nil: Single side stable

Terminal type

R: Tape and reel packing (Only for SMT type)

Nil: Tube packing(Only for DIP type)

Packing style

XXX: Customer special requirement

Nil: Standard

For instance: (478) indicates a monostable sensitive product with a rated coil power of 100mW;

Product with 888 suffix is for application at 105 ;

(356) indicates a low-halogen product that meets the requirements of

IEC 61249-2-21.

S3: J-legs SMT

Nil: DIP

S: Standard SMT

S1: Short terminal SMT

COIL DATA

at 23

Notes: 1) R type (tape and reel) packing is moisture-proof which meets requirement of MSL-3. Please choose R type packing for SMT products.

For R type, the letter "R" will only be printed on packing tag but not on relay cover. Tube packing is normally not available for SMT

products unless specially requested by customer. But please note that tube packing is not moisture-proof so please bake the products

before use according to description of Notice 10 herewith. In addition, tube packaging will be adopted when the ordering quantity of R

type is equal to or less than 100 pieces unless otherwise specified.

2) When coil sort, contact material, terminal type or packing style are needed, pleaes add "-" after coil voltage is selected. For instance,HFD4/24-SR.

3) The customer special requirement express as special code after evaluating by Hongfa.

4) The standard tube length is 520mm,Any special requirement needed, please contact us for more details.

5) For products that should meet the explosion-proof requirements of "IEC 60079 series",please note [Ex] after the specification while placing

orders.Not all products have explosion-proof certification,so please contact us if necessary, in order to select the suitable products.

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