# Signal Relay, 12 VDC, SPDT, 1 A, HFD17-1 Series, Through Hole, Non Latching
**URL**: https://novapart.co/products/HFD17-1/12-Z-3N/signal-relay-12-vdc-spdt-1-a-hfd17-series-through
**SKU**: HFD17-1/12-Z-3N
**Manufacturer**: HONGFA
**Category**: Switches & Relays || Relays || Signal Relays
**Price**: €1.0600
**Stock**: 1000+
**Lead Time**: 148 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Coil Type | Non Latching |
| Coil Voltage | 12VDC |
| Product Range | HFD17-1 Series |
| Relay Mounting | Through Hole |
| Coil Resistance | 700ohm |
| Contact Current | 1A |
| Relay Terminals | PC Pin |
| Contact Material | Silver Nickel |
| Contact Voltage Vac | 250V |
| Contact Voltage Vdc | 220V |
| Contact Configuration | SPDT |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:4733537/)
## **HFD17**
## **SUBMINIATURE SIGNAL RELAY**
## **Features**
- 8A switching capability
- UL insulation system: Class F
- Epoxy sealed for automatic-wavesoldering and cleaning
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File No.: E133481
File No.: R50431434
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- Standard PCB layout
- Product in accordance to IEC 60335-1 available
- Products compliant with IEC 60079 available
- 2kV dielectric strength between
- coil & contacts is available
## **RoHS compliant**
## **CHARACTERISTICS**
## **CONTACT DATA**
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|||
|---|---|
|Termination|THT|
|Unit weight|Approx. 4g|
|Construction|Plastic sealed|
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Contact arrangement 1A, 1C
100mΩ max.(AgNi gold-plated specifications Contact resistance[1)] 0.1A 30mVDC,AgNi non gold-plated specifications and AgSnO2:1A 30mVDC) Contact material AgNi, AgSnO2 Contact rating 3A 30VDC (Res. load) 3A 250VAC Max. switching voltage 250VAC / 220VDC Max. switching current 8A(30VDC) Max. switching power 750VA / 90W Min.applicable load 5V 1mA(Suitable for AgNi gold-plated specifications) Mechanical endurance 1 x 10[7] OPS
**Notes:** 1) The data shown above are initial values ；
- 2) UL insulation system: Class F ；
- 3) (AL9) indicates products with dielectric withstand voltage between coil and contact ≥ 2000VAC 1 min
## **COIL**
Coil power H: 150mW; Nil: 200mW
1C type: 1 x 10[5] OPS(NO:AgNi,85 ℃ ,1s on 9s off, HFD17:3A 30VDC HFD17-1:1A 30VDC) Electrical endurance 5 x 10[4] OPS(NO:AgNi,Room temp,1s on 9s off, HFD17:3A 250VAC HFD17-1:1A 250VAC) 1A type: 2 x 10[5] OPS(NO:AgNi,85 ℃ ,1s on 9s off,3A 30VDC) 1 x 10[5] OPS(NO:AgNi,85 ℃ ,1s on 9s off,3A 250VAC)
## **COIL DATA**
23 ℃
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|||||||
|---|---|---|---|---|---|
|Standard type|(200mW)|
|Nominal|Initial Pick-up|Initial Drop-out|Max.|Coil|
|Voltage|VoltageVDC|VoltageVDC|Voltage|[5)]|Resistance|
|VDC|[1)]|max.|max.|VDC|x (1±10%)Ω|
|2.4|1.8|0.24|4.8|28.8|
|3|2.25|0.3|6.0|45.0|
|4.5|3.38|0.45|9.0|101.3|
|5|3.75|0.5|10|120|
|6|4.5|0.6|12|180|
|9|6.75|0.9|18|400|
|12|9.0|1.2|24|700|
|18|13.5|1.8|36|1620|
|24|18.0|2.4|48|2800|
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**Notes:** 1) The data shown above are initial values.
- 2) Min. applicable load is reference value. Please perform the confirmation test with the actual load before production since reference value may change according to switching frequencies, environmental conditions and expected contact resistance and reliability.
## **CHARACTERISTICS**
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|||||||||||
|---|---|---|---|---|---|---|---|---|---|
|Insulation resistance|1000MΩ(at 500VDC)|
|6|4.5|0.6|12|180|
|between open contacts|750VAC 1min|
|Dielectric|1500VAC 1min|9|6.75|0.9|18|400|
|strength|between coil & contacts|2000VAC 1min(AL9|12|9.0|1.2|24|700|
|specification only)|[(3)]|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.|
|High sensitive type|(150mW)|
|NO: 294 m/s|[2]|
|Shockresistance|FunctionalDestructive|NC: 147 m/s980 m/s|[2][2]|NominalVoltage|Initial Pick-upVoltageVDC|Initial Drop-outVoltageVDC|VoltageMax.|[5)]|ResistanceCoil|
|NO: 10Hz to 55Hz 3.3mm DA|VDC|[1)]|max.|max.|VDC|x (1±10%)Ω|
|Vibration|Functional|NC: 10Hz to 55Hz 2.5mm DA|2.4|1.92|0.24|4.8|38.4|
|resistance|
|Destructive|10Hz to 55Hz 5mm DA|3|2.4|0.3|6.0|60.0|
|between open|4.5|3.6|0.45|9.0|135|
|Surge|contacts(10/160μs)|1500V(FCC part 68)|5|4.0|0.5|10|166.7|
|withstand|
|voltage|between coil &|2000V(Telecordia)|6|4.8|0.6|12|240|
|contacts(2/10μs)|9|7.2|0.9|18|540|
|Humidity|5% ~ 85%RH|12|9.6|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|2026 Rev. 1.00|
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ISO9001, IATF16949 , ISO14001, ISO45001, IECQ QC 080000, ISO/IEC 27001 CERTIFIED
126
23 ℃
## **COIL DATA**
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. ：
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VCC
RES2 V_coil
RELAY DIODE V
Port1
RES1
GND
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- 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**
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HFD17 HFD17-1
3A 125VAC,85 ℃ 1A 125VAC,85 ℃
AgNi 3A 250VAC,Room temp 1A 250VAC,Room temp
UL/CUL 3A 30VDC,85 ℃ 1A 30VDC,85 ℃
3A 250VAC,85 ℃
1A 250VAC,85 ℃
AgSnO� 3A 30VDC,85 ℃
1A 30VDC,85 ℃
TV-1 125VAC,Room temp
3A 125VAC,85 ℃ 1A 125VAC,85 ℃
AgNi 3A 250VAC,Room temp 1A 250VAC,Room temp
3A 30VDC,85 ℃ 1A 30VDC,85 ℃
TÜV 3A 250VAC,85 ℃ 1A 250VAC,85 ℃
AgSnO� 3A 30VDC,85 ℃ 1A 30VDC,85 ℃
1(1) 250VAC,Room temp 1(1)A 250VAC
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**Notes:** 1) Only typical loads are listed above. Other load specifications can be available upon request.
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## **ORDERING INFORMATION**
HFD17/ 24 -Z H -3 N （ XXX ） HFD17:3A contact rating **Type** HFD17-1:1A contact rating 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 H:** High sensitive(150mW) **Nil:** Standard(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 code[2)] For instance:** Product with AL9 suffix is indicate dielectric withstand voltage between coil and contact ≥ 2000VAC 1 min.
**Notes:** 1) This product is suitable for wave soldering or manual soldering.
- 2) The customer special requirement express as special code after evaluating by Hongfa.
- 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.
- 4) 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.Flux proofed and dust cover type relays are prohibited in environments with water vapor and harmful gases (P, Cl, H2S, SO2, NO2). Plastic sealed relays shall be used with practical test verification.
## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT**
Unit: mm
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Outline Dimensions Wiring Diagram PCB Layout
(Bottom view) (Bottom view)
15.7
0.3 0.5 4 × Ø1
1 Form A
10.16 2.54
0.6
1.2 10.16 2.54 (Bottom view)
Outline Dimensions Wiring Diagram PCB Layout
(Bottom view) (Bottom view)
15.7
0.3 0.5 5 × Ø1
1 Form C
0.6 10.16 2.54
1.2 10.16 2.54 (Bottom view)
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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**
## HFD17
## MAXIMUM SWITCHING POWER
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1000V FRESS Sea4 AC Resistive Load +
S RRese NTT
100V DC Resistive Loa d
30V Le
10V
NEN
ECE Cr
10mV EIEN CTE FFD
10uA 10mA 100mA 1A 10A
Contact Current
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## ENDURANCE CURVE
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500
a 30VDC Resistive Load
100
50
@ FARE
§ 10 LINN
4 250VAC Resistive Load PAE EE
1 AL LEPC
0 1 2 3 4 5 6 7
Switching Current
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Test conditions:
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NO:AgNi,Resistive Load,85 ℃ ,1s on 9s off .
HFD17-1
## MAXIMUM SWITCHING POWER
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1000V ———— oe os AC Resistive Load UL
Eee
eee
100V Uf DC Resistive Loa d LUN Psd
E=-E SSE
30V SS
10V
NN
IPCC Ce
10mV PALLETEI EETT
10uA 100mA 1A 10A
Contact Current
**----- End of picture text -----**
## ENDURANCE CURVE
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**----- Start of picture text -----**
500
s
30VDC Resistive Load
x<2 100 CTT|}4} yt
50
® GYeCEEEEEEE EE
125VAC Resistive Load
§ 10 [Nt
FERNS
1 FOCERN EEECEEEEE
0 1 2 3 4 5 6 7
Contact Current
Test conditions:
NO:AgNi,Resistive Load,85 ℃ ,1s on 9s off .
**----- End of picture text -----**
## **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.Flux proofed and dust cover type relays are prohibited in environments with water vapor and harmful gases (P, Cl, H2S, SO2, NO2). Plastic sealed relays shall be used with practical test verification.
- 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.
129
## Links
- [View this product on Novapart](https://novapart.co/products/HFD17-1/12-Z-3N/signal-relay-12-vdc-spdt-1-a-hfd17-series-through)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/hongfa/hfd17-1-12-z-3n/signal-relay-spdt-12v-1a-th/dp/4733537)
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