# Automotive Relay, 12 VDC, 35 A, SPDT, Through Hole, PC Pin, HFKW Series

![Product image](https://novapart.co/image/farnell:4919914/)

**URL**: https://novapart.co/products/HFKW/012-1ZW-L/automotive-relay-12-vdc-35-a-spdt-through-hole-pc
**SKU**: HFKW/012-1ZW-L
**Manufacturer**: HONGFA
**Category**: Switches & Relays || Relays || Automotive Relays
**Price**: €1.8000
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Coil Voltage | 12VDC |
| Product Range | HFKW Series |
| Relay Mounting | Through Hole |
| Coil Resistance | 240ohm |
| Contact Current | 35A |
| Relay Terminals | PC Pin |
| Contact Material | Silver Tin Oxide |
| Contact Configuration | SPDT |
| Contact Voltage Dc Nom | 16V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4919914/)

**SUBMINIATURE AUTOMOTIVE RELAY** 

## **HFKW** 

## **Features** 

- Tight structure and light weight 

- High current contact capacity 

- (Carrying current: 35A/10min 25A/1h) 

- Improved heat resistance 

## **Typical  Applications** 

Central door lock, Power doors & windows, Turning lamp control, Mirror adjustment, Seat adjustment, Speed-limit indicator control, Warm-up control, Wiper control 

- Reflow soldering version available 

- RoHS & ELV compliant 

## **CHARACTERISTICS** 

|Contact arrangement|1A, 1C|
|---|---|
|Voltage drop (initial)1)|Typ.: 50mV (at 10A)<br>Max.: 250mV (at 10A)|
|Max. continuous current 2)|35A (at 23<br>, 10min)<br>25A (at 23<br>, 1h)<br>Cc|
|Max. switching current 3)|NO: 35A<br>NC: 20A|
|Max. switching voltage|16VDC|
|Min. contact load4)|1A 12VDC|
|Electrical endurance|See "CONTACT DATA"|
|Mechanical endurance|1 x 10<br>7OPS (300OPS/min)|
|Initial insulation resistance|100M<br>(at 500VDC)<br>Q|
|Withstand voltage5)|500VAC<br>Q|
|Operate time|Max.: 10ms  (at nomi. vol.)|
|Release time6)|Max.: 5ms|
|Ambient temperature|Plastic sealed:-40<br>to 85<br>Fluxproofed:-40<br>to 125<br>°C<br>°C<br>°C<br>°C|



Vibration resistance[7)] 10Hz to 55Hz 1.5mm DA Shock resistance[7)] 98m/s[2] Termination PCB[8)] Construction Plastic sealed, Flux proofed Unit weight Approx. 6g 1) Equivalent to the max. initial contact resistance is 100m Q (at 1A 12VDC). 

- 2) Test under the following conditions: 

- a.The relay is mounted on the PCB,the coil is applied with 100% rated votage; 

- b.The PCB board is a double layer board. The thickness of the copper foil is 4 oz (140µm),the width of each copper foil is 4.86x(1 + 5%)mm, the length of the copper foil is (50 + 1)mm,and the Tg value of the PCB board is 150 °C ; 

- c.The sample orders were only tested. 

- d.It varies by connection conditions. Additionally, reliable performance under repeated power-on cannot be guaranteed. Verify based on 

- 3) At 23actual operating conditions during use. c , 13.5VDC (100 cycles, resistive load). 4) Lower limit target for on-off operation at low load. This value varies by on-off frequency, environmental conditions and expected reliability level; verify with actual load during use . 

- 5) 1min, leakage current less than 1mA. 

- 6) The value is measured when voltage drops suddenly from nominal voltage to 0VDC and coil is not paralleled with suppression circuit. 

- 7) When energized, opening time of NO contacts shall not exceed 100µs, when non-energized, opening time of NC contacts shall not exceed 100µs, meantime, NO contacts shall not be closed. 

- 8) Since it is an environmental friendly product, please select lead-free solder when welding. The recommended soldering temperature and time is (260 +°C 3) , (5 + 0.5)s. 

## **CONTACT DATA**[5)] 

|Load<br>voltage<br>13.5VDC|Load type<br>Resistive<br>Make<br>Break<br>ee|Load type<br>Resistive<br>Make<br>Break<br>ee|Load current  A|Load current  A|Load current  A|On/Off ratio|On/Off ratio|Electrical<br>endurance<br>OPS|Contact<br>material|Load wiring<br>diagram4)|
|---|---|---|---|---|---|---|---|---|---|---|
||||1C||1A|On<br>s|Off<br>s||||
||||NO|NC|||||||
|||Make|20|10|20|2|2|2×105|AgSnO2|See<br>diagram 1|
|||Break<br>ee|20<br>ee|10<br>ee|20<br>ee|2<br>||2<br>|||||
||Resistive|Make<br>Herr]<br>ee|30<br>Herr]<br>ee|—<br>Herr]<br>ee|30<br>Herr]<br>ee|2<br>Herr]<br>||2<br>Herr]<br>||1×105<br>Herr]|AgSnO2<br>Herr]|See<br>diagram 2|
|||Break<br>Herr]<br>ee|30<br>Herr]<br>ee|—<br>Herr]<br>ee|30<br>Herr]<br>ee||||||
||Motor<br>Locked|Make<br>Herr]<br>ee|253)<br>Herr]<br>ee|—<br>Herr]<br>ee|253)<br>Herr]<br>ee|0.2<br>Herr]<br>||2<br>Herr]<br>||1×105<br>Herr]|AgSnO2<br>Herr]|See<br>diagram 3|
|||Break<br>ee<br>ee|253)<br>ee<br>ee|—<br>ee<br>ee|253)<br>ee<br>ee||||||



HONGFA RELAY ISO9001, IATF16949 , ISO14001, ISO45001, IECQ QC 080000, ISO/IEC 27001 CERTIFIED 2025  Rev. 2.00 ~~CE~~ 

71 

|Load<br>voltage<br>13.5VDC|Load<br>Lamp1)|type|Load current   A|Load current   A|Load current   A|On/Off ratio|On/Off ratio|Electrical<br>endurance<br>OPS|Contact<br>material|Load wiring<br>diagram4)|
|---|---|---|---|---|---|---|---|---|---|---|
||||1C||1A|On<br>s|Off<br>s||||
||||NO|NC|NO||||||
|||Make|902)|—|902)|1|9|1×105<br>(at 85<br>)|AgSnO2|See<br>diagram 4|
|||Break|8.8|—|8.8||||||
||Lamp1)|Make|6×21W|—|6×21W|1|6|1×105|AgSnO2|See<br>diagram 4|
|||Break|||||||||
||Flasher|Make|3×21W|—|3×21W|0.365|0.365|2×106|Special<br>AgSnO2|See<br>diagram 5|
|||Break|||||||||



- 1)  When it is utilized in flasher, a special AgSnO2 contact material should be used and the customer special code should be (170) as a suffix. Please connect by the polarity according to the diagram below. 

- 2)  Corresponds to the peak inrush current on initial actuation (cold filament). 

- 3)  Corresponds to the peak inrush current on initial actuation (motor). 

- 4)  The load wiring diagrams are listed below (Ratings of NO, NC are tested based on different samples seperately) : 

**==> picture [415 x 65] intentionally omitted <==**

**----- Start of picture text -----**<br>
3 3 3 RL-1 3 3<br>NO<br>5 4 5 4 5 4 NC M Motor 5 5<br>R Resistive R Resistive R Resistive NO Lamp Flasher<br>NC<br>RL-2<br>diagram 1 diagram 2 diagram 3 diagram 4 diagram 5<br>**----- End of picture text -----**<br>


- 5)  When the load voltage is at 24VDC or higher, or the applications conditions are different from the table above, please submit the detailed application conditions to Hongfa to get more support. 

## **COIL DATA** 

|Nominal voltage 1)<br>VDC|Pick-up voltage<br>VDC<br>max.|Pick-up voltage<br>VDC<br>max.|Pick-up voltage<br>VDC<br>max.|Drop-out  voltage<br>VDC<br>min.|Drop-out  voltage<br>VDC<br>min.|Drop-out  voltage<br>VDC<br>min.|x(1<br>10%)<br>Coil<br>resistance|Power<br>consumption<br>W|
|---|---|---|---|---|---|---|---|---|
||23|85|125|23|85|125|23|23|
|6|3.6|4.5|5.1|0.5|0.6|0.7|60|0.6|
|9|5.4|6.8|7.6|0.7|0.8|0.9|135|0.6|
|10|6.3|7.9|8.9|0.8|1.0|1.1|180|0.6|
|12|7.3|9.2|10.3|1.0|1.2|1.4|240|0.6|



- 1)  Other types on request. 

## **ORDERING INFORMATION** 

**==> picture [454 x 171] intentionally omitted <==**

**----- Start of picture text -----**<br>
HFKW  / 012 -1Z W -L C (XXX)<br>Type<br>006 : 6VDC           009 : 9VDC<br>Coil voltage<br>010 : 10VDC         012 : 12VDC<br>Contact arrangement 1H : 1 Form A        1Z : 1 Form C<br>Contact material W:  AgSnO2<br>Construction  [1)]  L:  Flux proofed (Reflow soldering version)     Nil:  Plastic sealed [2)]<br>Packing style C:  Tape and reel packing  Nil:  Tube packing<br>Special code [3)] XXX:  Customer special requirement               Nil:  Standard<br>**----- End of picture text -----**<br>


**Notes:** 1) The structure of HFKW/ □□□- 1ZW - L □ is only flux proof, the open vent hole is at the bottom of the base. 

- 2) Contact us for suitable soldering conditions and product specifications if post-soldering cleaning or surface treatment is required after the relays are soldered onto the PCB. 

   - 3) The performance parameters of products with characteristic numbers shall be subject to the specific specifications provided by Hongfa. 

72 

Unit: mm 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

**==> picture [88 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
Outline Dimensions<br>**----- End of picture text -----**<br>


**==> picture [36 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 Form A<br>**----- End of picture text -----**<br>


**==> picture [358 x 257] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.5   0.3 10.2   0.3<br>15.7 max 12.5 max<br>1<br>2x0.3<br>0.3 0.4<br>1<br>2x1<br>**----- End of picture text -----**<br>


**==> picture [218 x 293] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 Form C<br>2.5   0.3 10.2   0.3<br>15.7 max<br>0.3<br>2x1<br>2x1<br>**----- End of picture text -----**<br>


**==> picture [117 x 137] intentionally omitted <==**

**----- Start of picture text -----**<br>
12.5 max<br>1<br>2x0.3 2x0.4<br>**----- End of picture text -----**<br>


Remark: ***** The additional tin top is max. 1mm. 

73 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

Unit: mm 

Wiring Diagram (Bottom view) 

PCB Layout (Bottom view) 

**==> picture [442 x 111] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 Form A 1 Form C 1 Form A 1 Form C<br>4× 1.4 + 0.20 (1.62) × + 0.20 (1.62)<br>1 5 1 5<br>3 3<br>2 2 4<br>2.5 ± 0.1 10.2 ± 0.1 2.5 ± 0.1 10.2 ± 0.1<br>**----- End of picture text -----**<br>


## **TAPE AND REEL PACKING** 

Unit: mm 

**==> picture [325 x 150] intentionally omitted <==**

**----- Start of picture text -----**<br>
Direction of Relay Insertion<br>Reel<br>I<br>4:1<br>Cover tape<br>Embossed<br>carrier tape<br>I<br>**----- End of picture text -----**<br>


## Direction of Relay Insertion 

**==> picture [277 x 112] intentionally omitted <==**

**----- Start of picture text -----**<br>
adhesive tape<br>Cover tape adhesive tape<br>Feed direction<br>during customer usage<br>a t  least 2 empty at least 3 empty<br>relay positions relay positions<br>Cover tape<br>**----- End of picture text -----**<br>


74 

Unit: mm 

## **TAPE AND REEL PACKING** 

**==> picture [189 x 155] intentionally omitted <==**

**----- Start of picture text -----**<br>
Reel Dimensions<br>2<br>3-R1  32.4 [0.6]<br>38.4  1<br>**----- End of picture text -----**<br>


Tape Dimensions 

**==> picture [241 x 120] intentionally omitted <==**

**----- Start of picture text -----**<br>
4<br>2<br>24<br>**----- End of picture text -----**<br>


## **CHARACTERISTIC CURVES** 

## 1. Coil operating voltage range (NO contacts, at 13.5VDC) 

**==> picture [428 x 158] intentionally omitted <==**

**----- Start of picture text -----**<br>
Intermittent coil operation Intermittent coil operation Intermittent coil operation<br>is required in this region is required in this region is required in this region<br>at 15A or more carrying current at 15A or more carrying current at 15A or more carrying current<br>15 15 15<br>Continuously applicable Continuously applicable<br>coil voltage range coil voltage range<br>10 10 10<br>Continuously applicable<br>coil voltage range<br>5 5 5<br>-40 0 50 100 -40 0 50 100 -40 0 50 100<br>Ambient temperature( ) Ambient temperature( ) Ambient temperature( )<br>HFKW/009-1ZW(XXX) HFKW/010-1ZW(XXX) HFKW/012-1ZW(XXX)<br>**----- End of picture text -----**<br>


75 

## **CHARACTERISTIC CURVES** 

**==> picture [162 x 10] intentionally omitted <==**

**----- Start of picture text -----**<br>
2. Load curve (NO contacts,  at 23 )<br>**----- End of picture text -----**<br>


**==> picture [365 x 137] intentionally omitted <==**

**----- Start of picture text -----**<br>
Electrical endurancecurve (Motor locked) Coil temperature rise<br>Coil power<br>30<br>120<br>20<br>0.6W<br>100<br>Carrying current  20A<br>10 80<br>0.6W<br>60 Carrying current  10A<br>5<br>40 0.6W<br>Carrying current  0A<br>20<br>0<br>10 20 30 40 50 0 10 20 40<br>Switching current (A) Time (min)<br>**----- End of picture text -----**<br>


HFKW/012-1ZW(XXX) 

HFKW/012-1ZW(XXX) 

**Test conditions:** 0.2s ON, 2s OFF 

Notes:The coil temperature rise test requires the relay to be installed on the PCB board; The PCB board is a double layer board; 

The thickness of the copper foil is 4 oz (140µm),the width of each copper foil is 4.86x(1 5%)mm; The length of the copper foil is (50 1)mm, Installation spacing is 100mm. 

## 3. Reflow soldering, temperature on PCB board. 

(Recommended soldering temperature, only for reflow soldering version) 

**==> picture [180 x 130] intentionally omitted <==**

**----- Start of picture text -----**<br>
Temperature<br>( )<br>Soldering<br>max.250<br>230<br>180<br>150 Preheating<br>30max Time(s)<br>120max<br>**----- End of picture text -----**<br>


## Disclaimer 

The specification is for reference only. See to "Terminology and Guidelines" for more information. Specifications subject to change without notice. In case there is specific criterion (such as mission profile, technical specification, PPAP etc.) checked and agreed by and between customer and Hongfa, this specific criterion should be taken as standard regarding any requirement on Hongfa product. 

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. 

76 



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- [Supplier page](https://es.farnell.com/hongfa/hfkw-012-1zw-l/automotive-relay-spdt-12v-35a/dp/4919914)
---

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