HFD5-TC/12-SR

**MINIATURE 5TH GENERATION HIGH-TEMPERATURE SIGNAL RELAY** 

## **HFD5-T** 

## **Features** 

- Extended temp. range up to 125 ℃ 

- An ideal alternative to small high-temperature reed relays 

- Operate/release (reset) time ≤ 2.0ms 

- Bifurcated contacts 

- 2 Form C configuration 

- Products with electrical endurance ≥ 1x10[8] ops available 

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File No. ： E133481<br>File No. ： R 50674706<br>**----- End of picture text -----**<br>


- Low halogen products conforming to IEC61249-2-21 are available 

- Both THT & SMT types available 

- Single side stable and latching type available 

- Smallest size in signal relay industry: 9.0(L)×4.8(W)×4.9(H) mm 

## **RoHS compliant** 

## **CONTACT DATA** 

Contact arrangement 2Z Contact resistance 150mΩ max.(at 10mA 30mVDC) Contact material Ag alloy+Au plated Contact rating 0.5A 30VDC (Res. load) 0.3A 125VAC Max. switching current 0.8A(30VDC) Max. switching voltage 125VAC/60VDC Max. switching power 37.5VA/15W Max.continuous current 0.8A(125 ℃ ) Min.  applicable load[2)] 10mV 10μA Mechanical endurance 1×10[8 ] OPS 1×10[5] OPS(125 ℃ , 1s on ： 9s off , NO or NC , 0.5A 30VDC) 1×10[5] OPS(125 ℃ , Electrical 1s on ： 9s off , NO or NC , 0.3A 125VAC) endurance[3)] 1×10[8] OPS(AR8)[4)] (40 ℃， 0.1s on ： 0.1s off, Two sets of NO or NC in paralle[5)] , 10mA  5VDC) 

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. 

- 3) Only typical loads are listed above. Other load specifications can be available upon request. 

- 4) (AR8) indicates products with electrical endurance ≥ 1x10[8] OPS . 

- 5) Two sets of NO or NC parallel wiring diagrams (bottom view) are as follows: 

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1 2 3 4 1 2 3 4<br>8 7 6 5 8 7 6 5<br>Orientation mark Orientation mark<br>**----- End of picture text -----**<br>


- 6) For low level and long durability applications, it is recommended to use two sets of NO or NC in parallel. If you need to use a single set of NO or NC, please contact our company. 

## **SAFETY APPROVAL RATINGS** 

|UL/CUL<br>TUV|Ag alloy+Au plated<br>Ag alloy+Au plated|Ag alloy+Au plated<br>Ag alloy+Au plated|Ag alloy+Au plated<br>Ag alloy+Au plated|0.3A 125VAC 125<br>0.5A  30VDC 125<br>0.3A 125VAC 125<br>0.5A  30VDC 125|
|---|---|---|---|---|



## **CHARACTERISTICS** 

|Between coil &<br>contacts<br>Between open<br>contacts<br>Between contact<br>sets<br>Insulation resistance<br>Dielectric<br>strength<br>|||<br>||Between coil &<br>contacts<br>Between open<br>contacts<br>Between contact<br>sets<br>Insulation resistance<br>Dielectric<br>strength<br>|||<br>||1000MΩ(500VDC)<br>1000VAC 1min<br>500VAC 1min<br>1000VAC 1min|
|---|---|---|
|Operate time (Set time)||2.0ms max|
|Release time (Set time)<br>Vibration<br>resistance<br>Functional<br>Destructive<br>Functional<br>Destructive<br>Shock<br>resistance<br>|<br>~~id~~<br>~~|~~<br>~~|~~||2.0ms max.<br>735m/s2<br>980m/s2<br>10Hz to 55Hz  3.3mm DA<br>10Hz to 55Hz  5.0mm DA|
|Humidity||5% to 85%RH|
|Ambient temperature<br>Termination<br>Unit weight||-40℃to 125℃<br>THT, SMT<br>Approx. 0.5g|
|Moisture sensitivity levels<br>(Only for SMT type,<br>JEDEC-STD-020)||MSL-3|
|Construction||Plastic sealed|



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

## **COIL** 

|Coil power|Single side stable<br>1 coil latching||See table“COIL DATA”<br>See table“COIL DATA”|
|---|---|---|---|
|Temperature rise|50K max.(0.8A||Load,at 125℃)|



## **HIGH-FREQUENCY CHARACTERISTICS**[1)] 

|Frequency2)|100MHz|900MHz|
|---|---|---|
|Insertion loss3)|0.03dB|0.3dB|
|V.SWR3)|1.05|1.4|
|Isolation3)|45dB|25dB|



- Notes: 1) The characteristic impedance of the measuring system is 50Ω . 2) If there is a demand for frequencies higher than 1GHz, please contact us. 

   - 3) The data shown above are initial values. 

## HONGFA RELAY 

ISO9001, IATF16949 , ISO14001, ISO45001, IECQ QC 080000, ISO/IEC 27001 CERTIFIED 

2025  Rev. 1.00 

001 

at 23 ℃ 

## **COIL DATA** 

## **Single side stable** 

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Nominal Initial Pick-up Initial  Drop-out Coil Nominal Nominal Power Max.<br>Coil Code Voltage VoltageVDC [2)] VoltageVDC Resistance current mW Voltage<br>VDC max. min. Ω mA approx VDC [5)]<br>HFD5-T/1.5 1.5 1.13 0.15 28×(1±10%) 53.3 80 2.3<br>HFD5-T/2.4 2.4 1.80 0.24 72×(1±10%) 33.3 80 3.6<br>HFD5-T/3 [ 3)] 3.0 2.25 0.30 112.5×(1±10%) 26.7 80 4.5<br>HFD5-T/4.5 4.5 3.38 0.45 253×(1±10%) 17.8 80 6.8<br>HFD5-T/5 [ 3)] 5.0 3.75 0.50 313×(1±10%) 16.0 80 7.5<br>HFD5-T/6 6.0 4.50 0.60 450×(1±10%) 13.3 80 9.0<br>HFD5-T/9 9.0 6.75 0.90 1013×(1±10%) 8.9 80 13.5<br>HFD5-T/12 12.0 9.00 1.20 1800×(1±10%) 6.7 80 18.0<br>HFD5-T/24 24.0 18.00 2.40 5760×(1±10%) 4.2 100 36.0<br>**----- End of picture text -----**<br>


## **1 coil latching** 

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Nominal Initial Pick-up Initial  Drop-out Coil Nominal Nominal Power Max.<br>Coil Code Voltage VoltageVDC [2)] VoltageVDC Resistance current mW Voltage<br>VDC max. max. Ω mA approx VDC [5)]<br>HFD5-T/1.5-L 1.5 1.13 1.13 28×(1±10%) 53.3 80 2.3<br>HFD5-T/2.4-L 2.4 1.80 1.80 72×(1±10%) 33.3 80 3.6<br>HFD5-T/3-L [ 3)] 3.0 2.25 2.25 112.5×(1±10%) 26.7 80 4.5<br>HFD5-T/4.5-L 4.5 3.38 3.38 253×(1±10%) 17.8 80 6.8<br>HFD5-T/5-L [ 3)] 5.0 3.75 3.75 313×(1±10%) 16.0 80 7.5<br>HFD5-T/6-L 6.0 4.50 4.50 450×(1±10%) 13.3 80 9.0<br>HFD5-T/9-L 9.0 6.75 6.75 1013×(1±10%) 8.9 80 13.5<br>HFD5-T/12-L 12.0 9.00 9.00 1800×(1±10%) 6.7 80 18.0<br>HFD5-T/24-L 24.0 18.00 18.00 5760×(1±10%) 4.2 100 36.0<br>**----- End of picture text -----**<br>


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

- 2) Initial Pick-up voltage is the factory value of the relay 

- 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<br>RES2 V_coil<br>RELAY DIODE V<br>Port1<br>RES1<br>GND<br>**----- End of picture text -----**<br>


- 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. 

002 

## **ORDERING INFORMATION** 

HFD5-T/ 12 -L S R （ XXX ） **Type** 1.5 2.4 3 4.5 **Coil voltage** 5 6 9 12 24VDC **Sort L:** 1 coil latching **Nil:** Single side stable **S:** Standard SMT **Terminal type         S1:** Short terminal SMT **Nil:** THT[1)] **R:** Tape and reel packing (Only for SMT type)[2)] **Packing style Nil:** Tube packing(Only for THT type) **XXX:** Customer special requirement **Nil:** Standard For instance: Product with  825 suffix is applicable to low level load applications, such as **Special code**[(3)] testing, medical treament , communication, etc. Product with AR8 suffix is indicate electrical endurance ≥ 1x10[8] OPS 

Notes:  1) Please use wave soldering or manual  soldering for straight-in relay.If you need reflow welding please confirm the feasibility with us. 

- 2)  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 11 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. 

   - 3) When coil sort, terminal type or packing style are needed, pleaes add "-" after coil voltage is selected. For instance, HFD5-T/12-SR. 

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

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

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Unit: mm<br>**----- End of picture text -----**<br>


## Outline Dimensions 

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PCB Layout(Bottom view)<br>**----- End of picture text -----**<br>


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THT<br>**----- End of picture text -----**<br>


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9 4.8<br>3.2 2.2 2.2<br>8x   0.85<br>0.7 0.4 0.15<br>3.2<br>3.2 2.2 2.2<br>S type: Standard SMT<br>9 4.8 3.2 2.2 2.2<br>0.7 0.4 0.15<br>3.2 2.2 2.2 3.2 0.8<br>5.7<br>**----- End of picture text -----**<br>


003 

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

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Unit: mm<br>**----- End of picture text -----**<br>


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


PCB Layout(Bottom view) 

S1: Short terminal SMT 

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9 4.8<br>| | ~ 3.2 + 2.2 +- 2.2<br>| LT<br>0.7 0.4 0.15 0.8<br>3.2 2.2 2.2 3.2<br>ce | B e<br>ey 4.8 “eben<br>**----- End of picture text -----**<br>


Wiring Diagram(Bottom view) 

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Single side stable 1 coil latching<br>1 2 3 4 1 2 3 4<br>8 7 6 5 8 7 6 5<br>Orientation mark Orientation mark<br>No energized condition  Reset condition<br>**----- End of picture text -----**<br>


Pin Layout Single side stable & 1 coil latching 

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1 2 3 4<br>8 7 6 5<br>Orientation mark<br>_ AA B e<br>**----- End of picture text -----**<br>


> Remark: 1) 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. 2) The tolerance without indicating for PCB layout  is always ±0.1mm. 

3) The pin dimension of the product outline drawing is the size before 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 adiusted according to the actual product. 

004 

## **TAPE PACKING** 

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Unit: mm<br>**----- End of picture text -----**<br>


## Direction of Relay Insertion 

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I<br>Reel 4:1<br>Cover tape S Orientation mark<br>—<br>KK \ °<br>0) <S ~_ 0 j oo C000 p P000 00 Feed direction<br>\ | 3<br>W x \ Ch<br>&<br>Embossed<br>j carrier tape S S P Yee<br>Notes: S type/S1 type<br>I 1)  Packing: 1000pcs/reel, 4 reels/carton.<br>2)  MOQ for reel packing is 1000pcs.<br>adhesive tape<br>_ Cover tape Cover tape adhesive tape<br>| / \\ during customer usageFeed direction \\<br>eee ee at least 5 empty \\ \\ at least 5 empty \\<br>relay positions relay positions<br>**----- End of picture text -----**<br>


Reel Dimensions 

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13 [±0.2] 29.4 [±1]<br>2 [±0.3] 24.4 1.60<br>@ LJ Lt:<br>Ut i<br>3-R1<br>a 21 [±0.5] LN | 8<br>**----- End of picture text -----**<br>


## Tape Dimensions 

(S type: Standard SMT,S1 type ： Short terminal SMT) 

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wo B-B<br>4.00 2.00 @ 1.50 N 0.50<br>! B an 2 1.50 : A-A<br>wy si si So S o — |<br>A A<br>Pot Pot Po Pes Pde | = s NINE<br>_= _= _= _= | E 5.10<br>Dora bil iN bil Weare = ||<br>B<br>5.50<br>12.00<br>**----- End of picture text -----**<br>


## **HIGH FREQUENCY CHARACTERISTICS CURVES** 

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ISOLATION INSERTTION LOSS VOLTAGE STANDING WAVE RATIO<br>0 0 2.0<br>o 10 (TM TM TT 2 eA © ME<br>5 20 0.2 1.8 Ta TT<br>DT | BL TIN<br>s2 30 | TUM Tia TUT = UIE TAINETT TUTTT @ TTIaaTAME THT<br>40 en atl 2 0.4 LUALI TU 1.6 a<br>50 DM 2 LUN TI TUT a a<br>60 0.6 1.4<br>7080 a 0.8 1.2 {|<br>90 || a NO NC a a NO NC LAI AIT NO NC<br>100 10 ELLUM 100 Ct eemr 1000 1.0 10 2a 100 iil| 1000 1.0 | 10 ee LE 100 | be 1000 corel<br>Frequency MHz Frequency MHz Frequency MHz<br>**----- End of picture text -----**<br>


Remark: 1) Ambient temperature conditions is 23 ℃; 

- 2) The data shown above are initial values. 

- 3) The high-frequency characteristics will vary depending on the PCB board.Please be sure to check performance parameters including durability in actual equipment before use. 

- 4) Test model and specification: HFD5-T/XX-SR, test instrument: Keysight E5071C network analyzer, the characteristic impedance of the measurement system is 50Ω . 

## **CHARACTERISTIC  CURVES** 

MAX.SWITCHING POWER CURVE 

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1000V<br>eetssCOM AC Resistive Coon<br>100V<br>30V [|| TANT<br>[| DC Resistive ell<br>10V | || Oa ll<br>10mV a a<br>10uA 10mA 100mA 1A 10A<br>Contact Current (A)<br>**----- End of picture text -----**<br>


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ENDURANCE CURVE<br>**----- End of picture text -----**<br>


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500<br>aa SS<br>a<br>100 30VDC Resistive Load<br>| EA T<br>50<br>© (VV i fi tf] | tT ft tT ft ye<br>o ENN See<br>So 10 1 TNNIET EEE<br>125VAC Resistive Load<br>a<br>0 ERCPCC EEE Eee<br>0 0.5 1.0 1.5<br>Contact Current (A)<br>Test conditions:<br> Resistive load, 1s on 9s off.<br>**----- End of picture text -----**<br>


REFLOW WELDING,TEMPERATURE ON PCB BOARD 

RECOMMENDED WELDING TEMPERATURE 

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( Only for SMT version )<br>Temperature<br>( ℃ )<br>max.245 Soldering<br>220<br>180 AK max. 3 ℃ /s<br>Preheating<br>150<br>max. 6 ℃ /s<br>max. 60 Time(s)<br>max. 100 max. 100<br>a ia<br>max. 280 =<br>**----- End of picture text -----**<br>


004 

## **Notice** 

1)  This relay is highly sensitive polarized relay, if correct polarity is not applied to the coil terminals, the relay does not operate properly. 

- 2)  To avoid using relays under strong magnetic field which will change the parameters of relays such as pick-up voltage and drop-out voltage. 

- 3)  Relay is on the "reset" status when being released from stock, with the consideration of shock risen from transit and relay mounting, it should be changed to the "set" status when application(connecting to the power supply). Please reset the relay to "set" or "reset" status on request. 

- 4)  The relay action voltage and release/return voltage are the initial values tested under standard conditions (23 C). Applying rated voltage to both ends of the relay coil is the basis for normal operation of the relay. Considering the influence of environment temperature, coil temperature rise (such as hot start), voltage fluctuation, etc., in order to ensure the safety margin, make sure that the voltage applied to both ends of the relay coil reaches the rated voltage before use. For a magnetic retention relay, the pulse width of the rated voltage applied to both ends of the relay coil must be more than five times the action or recovery time in order to ensure its action or recovery. 5)  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; 

- 6)  The relay may be damaged because of falling or when shocking conditions exceed the requirement. 

- 7)  For SMT products, validation with real application should be done before your series production, if the reflow-soldering temperature curve is out of our recommendation. Generally, two-time reflow-soldering is not recommended for the relay. However, if two-time reflow-soldering is required, a 60-min. interval should be guaranteed and a validation should be done before production. 

- 8)  Please use wave soldering or manual soldering for straight-in relay. If you need reflow welding, please confirm the feasibility with us. 

- 9)  Contact is recommended for suitable condition and specifications if water cleaning or surface process is involved in assembling relays on PCB. 

- 10)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. 

- 11)Relays packaged in moisture barrier bags meet MSL-3 requirements. The relays should be stored at ambient conditions of ≤ 30 ℃ and ≤ 60% RH after they are removed from their packaging, and should be used within 168 hours. If the relays cannot be used within 168 hours, please repack them or store them in a drying oven at 25 ℃ ±5 ℃ , ≤ 10% RH. Otherwise, relays may be subjected to a soldering test to check their performance, or they may be used after keeping them in an oven for 72 hours at with 50 ℃ ±5 ℃ , ≤ 30% RH. 

- 12)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. 

- 13)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. 

- 14)About preferable condition of operation, storage and transportation, please refer to "Explanation to terminology and guidetines of relay. 

- 15)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.