HFD16 SUBMINIATURE SIGNAL RELAY

Features
● 8A switching capability
● UL insulation system: Class F
● Epoxy sealed for automatic-wavesoldering and cleaning
File No.: E133481
● Standard PCB layout
● Product in accordance to IEC 60335-1 available
● Products compliant with IEC 60079 available
● 1.5kV dielectric strength between
File No.: R50374275 coil & contacts is available RoHS compliant

CONTACT DATA CHARACTERISTICS

Contact arrangement 1A1C Termination PCB(DIP)
100mΩ max.(AgNi gold-plated specifications0.1A Unit weight Approx. 4g
Contact resistance1) 30mVDC,AgNi non gold-plated specifications and
AgSnO2:1A 30mVDC) Construction Plastic sealed
Contact material AgNi, AgSnO2 Notes: 1) The data shown above are initial values；
3A 30VDC 2) UL insulation system: Class F；
Contact rating 3) (413) indicates products with dielectric withstand voltage
(Res. load) 3A 250VAC between coil and contact ≥1500VAC 1 min
Max. switching voltage 250VAC / 220VDC
Max. switching current 8A(30VDC) COIL
Max. switching power 750VA / 90W
Coil power C type: 150mW; H type: 200mW
Min.applicable load 5V 1mA(Suitable for AgNi gold-plated specifications)

Mechanical endurance 1 x 107OPS

1C type:1 x 10 OPS(NO:AgNi,85℃,1s on 9s off,3A 30VDC)
5

Electrical endurance
5 x 104OPS(NO:AgNi,Room temp,1s on 9s off,3A 250VAC) COIL DATA 23℃
1A type:2 x 105OPS(NO:AgNi,85℃,1s on 9s off,3A 30VDC)
1 x 105OPS(NO:AgNi,85℃,1s on 9s off,3A 250VAC) High sensitive type：(200mW)
Notes: 1) The data shown above are initial values. Nominal Initial Pick-up Initial Drop-out Max. Coil
2) Min. applicable load is reference value. Please perform the Voltage Voltage
Voltage Voltage5) Resistance
confirmation test with the actual load before production since VDC VDC
VDC VDC x (1±10%)Ω
reference value may change according to switching frequencies, max. min.
environmental conditions and expected contact resistance and 2.4 1.80 0.24 4.8 28.8
reliability.
3 2.25 0.3 6.0 45.0
CHARACTERISTICS 4.5 3.38 0.45 9.0 101.3
Insulation resistance 1000MΩ(at 500VDC) 5 3.75 0.5 10 120
1100VAC 1min 6 4.50 0.6 12 180
between coil & contacts 1500VAC 1min(413 9 6.75 0.9 18 400
Dielectric
strength specification only)(3) 12 9.00 1.2 24 700
between open contacts 750VAC 1min 18 13.5 1.8 36 1620
Operate time (at rated voltage.) 5ms max. 24 18.0 2.4 48 2800
Release time (at rated voltage.) 5ms max.
NO: 294 m/s2 Super sensitive type：(150mW)
Shock Functional
NC: 147 m/s2 Nominal Initial Pick-up Initial Drop-out Max. Coil
resistance Voltage Voltage
Destructive 980 m/s2 Voltage Voltage5) Resistance
VDC VDC
NO: 10Hz to 55Hz 3.3mm DA VDC VDC x (1±10%)Ω
max. min.
Vibration Functional 2.4 1.92
NC: 10Hz to 55Hz 2.5mm DA 0.24 4.8 38.4
resistance
Destructive 10Hz to 55Hz 5mm DA 3 2.40 0.3 6.0 60.0
between open 4.5 3.60 0.45 9.0 135
Surge 1000V(FCC part 68)
contacts(10/160μs) 5 4.00 0.5 10 166.7
withstand
voltage between coil & 6 4.80 0.6 12 240
1500V(Telecordia)
contacts(2/10μs)
9 7.20 0.9 18 540
Humidity 5% ~ 85%RH
12 9.60 1.2 24 960
Ambient temperature -40℃ ~ 85℃
18 14.4 1.8 36 2160
24 19.2 2.4 48 3840

HONGFA RELAY
ISO9001, IATF16949 , ISO14001, ISO45001, IECQ QC 080000, ISO/IEC 27001 CERTIFIED 2024 Rev. 2.00

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 COIL DATA 23℃
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.：

VCC

RES2 V_coil

RELAY DIODE V

Port1
RES1

GND

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.

SAFETY APPROVAL RATINGS

3A 30VDC,85℃
3A 250VAC
AgNi
5A 125VAC
H 1A 125VAC,85℃
High sensitive type 3A 30VDC,85℃
3A 250VAC
AgSnO2
UL/CUL 1A 250VAC,85℃
TV-1 125VAC
3A 250VAC
AgNi
3A 30VDC,85℃
C
3A 250VAC
Super sensitive type
AgSnO2 3A 30VDC,85℃
TV-1 125VAC
3A 30VDC ,85℃
3A 250VAC
H AgNi 1A 250VAC
High sensitive type 1A 125VAC,85℃
TUV 5A 125VAC
C 3A 30VDC,85℃
Super sensitive type 3A 250VAC
AgSnO2
1A 250VAC,85℃
1(1)A 250VAC
Notes: 1) All values unspecified are at room temperature.
2) Only typical loads are listed above. Other load specifications can be available upon request.

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 ORDERING INFORMATION

HFD16/ 24 -Z H -3 N （XXX）
Type

2.4, 3, 4.5, 5, 6, 9,
Coil voltage
12, 18, 24 VDC

Contact arrangement H: 1 Form A Z: 1 Form C

Coil power C: Super sensitive(150mW) H: High sensitive(200mW)

Contact material 3: AgNi T: AgSnO2

Contact plating Nil: gold plated(Only for AgNi type) N: No gold plated

XXX: Customer special requirement Nil: Standard

Special code1) For instance:Product with 413 suffix is indicate dielectric withstand
voltage between coil and contact ≥1500VAC 1 min.
Notes: 1) The customer special requirement express as special code after evaluating by Hongfa.
2) The standard size of this pruduct tube package is 409mm, Any special requirement needed, please contact us for more details.
3) 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.

OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT Unit: mm

Outline Dimensions Wiring Diagram PCB Layout

(Bottom view) (Bottom view)

15.7 0.6
0.3
0.5
0.7

5×Ø1
0.3

1 Form A
10.6
12

7.62

7.62
10.16 2.54
3.5

(Bottom view)
1.2 10.16 2.54

15.7 0.6
0.3
0.5 6×Ø1
0.7

0.3
10.6

1 Form C
7.62

7.62
12

10.16 2.54
3.5

(Bottom view)
1.2 10.16 2.54

Remark: 1) The pin dimension of the product outline drawing is the size before tinning(it will become larger after tinning),and the mounting hole
size is the recommended design size of the PCB board hole.The specific PCB board hole design size can be mapped and adjusted
according to the actual product.
2) In case of no tolerance shown in outline dimension: outline dimension ≤1mm, tolerance should be ±0.2mm;
outline dimension ＞1mm and ≤5mm, tolerance should be ±0.3mm; outline dimension ＞5mm, tolerance should be ±0.4mm.
3) The tolerance without indicating for PCB layout is always ±1mm.
4) The width of the gridding is 2.54mm.

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 CHARACTERISTIC CURVES

MAXIMUM SWITCHING POWER ENDURANCE CURVE

1000V
Contact Voltage

Operations (X10000 OPS)

AC Resistive Load
500

30VDC Resistive Load

100V DC Resistive Load 100

50
30V

10V
10

250VAC Resistive Load

10mV
1
10uA 10mA 100mA 1A 10A 0 1 2 3 4 5 6 7

Contact Current Switching Current (A)

Test conditions:
NO:AgNi,Resistive Load,85℃,1s on 9s off.

Notice
1) To avoid using relays under strong magnetic field which will change the parameters of relays such as pick-up voltage and drop-out voltage.
2) Energizing coil with rated voltage is basic for normal operation of a relay, please make sure the energized voltage to relay coil have reached the
rated voltage. Regarding latching relay, in order to maintain the "set" or "reset" status, impulse width of the rated voltage applied to coil should
be more than 5 times of "set" or "reset" time.
3) For a monosteady state relay, after the relay is reliably operated, if it needs to be kept under pressure, make sure that the effective value of the
voltage is not less than 60% of the rated voltage;
4) The relay may be damaged because of falling or when shocking conditions exceed the requirement.
5) Please use wave soldering or manual soldering for straight-in relay. If you need reflow welding, please confirm the feasibility with us.
6) Contact is recommended for suitable condition and specifications if water cleaning or surface process is involved in assembling relays on PCB.
7) Plastic sealed type is recommended for an environment with noxious gas such as H2S, SO2 and NO2,ect., and/or when load current is ow,and/or
the PCB boards need to be washed after relays are soldered.
8) Regarding the plastic sealed relay, we should leave it cooling naturally untill below 40℃ after welding, then clean it and deal with coating,
remarkably the temperature of solvents should also be controlled below 40℃.Please avoid cleaning the relay by ultrasonic, avoid using the
solvents like gasoline, Freon, and so on, which would affect the configuration of relay or influence the environment.
9) When applied with continuous current, the heat from relay coil will age its isolation. Thus, please do not ground connected the coil to reduce
electrical errosion if possible. And please provide protection circuit to avoid broken wire and losses.
10) Please make sure that there are no silicon-based substances (such as silicon rubber, silicone oil, silicon-based coating agents, silicon fillers,
etc.) around the relay, because it will generate silicon-containing volatile gas, which may cause poor contact in case of silicon-containing volatile
gas sticking on contact.
11) About preferable condition of operation, storage and transportation, please refer to "Explanation to terminology and guidetines of relay".
12) 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.

Disclaimer
The specification is for reference only. See to "Terminology and Guidelines" for more information. Specifications subject to change without notice.
We could not evaluate all the performance and all the parameters for every possible application. Thus the user should be in a right position to
choose the suitable product for their own application. If there is any query, please contact Hongfa for the technical service. However, it is the
user’s responsibility to determine which product should be used only.
© Xiamen Hongfa Electroacoustic Co., Ltd. All rights of Hongfa are reserved.

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