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Taiko Device Techno & Co., Ltd. 
RTC1L RELAY SPECIFICATIONS
All data are at 20°C ambient temperature unless otherwise noted. 
  RTC1
 
 PCB Miniature High Current Latching relay.  
   
   
 Covers a broad range  
 of automotive applications.  
   
 The relays are lead free / RoHS compliant.  
   
   
   
 Please observe the special notes at the last page of this data sheet.  
        RTC1L  
 Available Standard Types        
RTCL1  Standard Type  reflow solderable 125°C max. ambient temperature  
 The standard Reflow types have a vent-hole in the cover (Letter T appended)  
   
 Special Features available:  ( see nomenclature page)  
   
           
 Available Coil Options        
Contact versions Coil Resistance  Nominal Power Polarity at Pin 6 Set Voltage Reset Voltage
Form C contact 75 Ω each 1.920 W plus 6.5 V 6.5 V
Form U contact 75 Ω each 1.920 W minus 7.2 V 7.2 V
   ±10%    
   
   
ITEM   SPECIFICATION
 Contact Arrangement
 1 Form C / 1Form U
 Contact Material
 AgSnO2 Alloy
 Contact Resistance
 Typical 3 mΩ (max 50mΩ at 6 VDC 1A)
 Contact Rated Load
 25A at 14VDC Motor load (Locked Rotor)
 Max. Switching Current/ Voltage
 30A at 16VDC
 Max. Continuous Current at 20 °C
 30A at 14VDC for 1hour
 Min. Switching Current (recommended)
 1A at 12VDC
 Dielectric Strength
 500VAC for 1 minute (between coil and contact)
 500VAC for 1 minute (between open contacts)
 Insulation Resistance
 Min 100MΩ  (at 500VDC)
 SET / RESET pulse
 min 10ms
 max 1 s
 Set Time
 Max 10ms (at 12VDC, 20℃ with pulse > 10 ms)
 Reset Time
 Shock resistance
 False Operation
 Min 98m/s2 ( 10G) :Shock wave 11ms
 Endurance
 Min 980m/s2 (100G) :Shock wave 6ms
Vibration resistance
 False Operation
 Min 43m/s2 ( 4.4G) at 10 to 500Hz
 Endurance
 Mechanical Life (no load)
 Min 10×106 Operations(300 cycles/minute)
 Electrical Life at rated load
 Min 1.0×105 Operations  (2 sec. ON/ 2 sec. OFF)
 Ambient Temperature range
 -40°C to 125°C
 Weight
 Approx. 10 g
   
           
TECHNICAL REFERENCE DATA FOR THE RTCL1-75 RELAY
 Contact Resistance of the NO contact    Contact Resistance of the NC contact  
 
 
 
 
       
       
       
       
       
       
       
       
       
       
       
       
       
       
       
           
 Set Time with 12 V  Reset Time with 12V
 
 
 
 
       
       
       
       
       
       
       
       
       
       
       
       
       
       
       
           
 Operating Voltage Range        
   
 
     
   
   
Please note, that this diagram
shows the SET/ RESET Voltage range
and the Maximum Voltage is 16 V
for coil at ambient temperature.

Not valid for continuous condition
since it is required, 
that the latching relays are
energized by impulses only.

 No Load Current considered.

  
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
           
TECHNICAL REFERENCE DATA FOR THE RTCL1-75 RELAY
 Coil temperature rise
        
 
 
 
 
       
       
       
       
       
       
       
       
       
       
       
       
       
       
       
           
 Over current limit
      Set and Reset Time  
 
 
 
 
       
       
       
       
       
       
       
       
       
       
       
       
       
       
       
       
 Contact voltage drop over the NO contact
      
   
 
     
   
 
increasing current  
  decreasing current  
This diagram shows
the voltage drop over current
for the NO contact during
the increase of the current
and during the decrease 		 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
           
 External Dimensions / Wiring Diagram / PCB Pin Layout      
 
         
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
           
 Packaging specification        
 Standard Tube Packaging 40 relays per tube, 20 tubes per box (800 relays per box)  
   
 
 
   
   
   
   
   
   
   
   
   
   
   
 Notes:          
   
The benefit of a latching relay lies in the fact that it can be operated with short pulses so that the heat of the coil which normally is the highest contributor is not recognizable any more
Therefore a latching relay can carry higher currents than a neutral relay.
Latching relays need to be turned on by one pulse at one winding and turned off by a puls in the opposite direction or by another pulse to a second winding.
A latching relay is recognizable  by at least 3 coil pins instead of 2 of a neutral relays
 
Since the 2 windings of the coil of the TCL are not symmetrical you cannot swap the function from one winding to the other. The coils which require the pin 6 to be "minus" are marked with the letter "H" at the end.
 
A latching relay should be operated by pulses with a width between 10 ms and 1000ms.
 
If the pulse is too short, the relay may not operate. If the voltage is applied too long especially at high ambient temperature the coil might overheat quickly.
Apply a voltage to the coil in the polarity specified by the internal connection diagram of the relay.
Do not apply voltage at the set and reset windings at the same time.
 
A latching relay is factory-set to the reset state for shipment.
However, it may be SET while being transported due to vibration or shock.
 
Therefore it is recommendable to reset the relay before the PCB is tested.
 
The spring of this relay might relax if you run these relays in a SET condition through the reflow oven
 
Taiko recommends to RESET the relays in a special step before reflow soldering.
 
 For further information, please contact Taiko device Techno.
 
 Disclaimer:          
   
 The above information is for information only and with no responsibility, not binding and can be changed any time.
 Taiko Device Techno cannot be held responsible for typos, or misprints.