OPTO 22 - 120D3 _ 120 VAC, 3 Amp, DC Control Solid State Relay (SSR)

Quick Specs:

120 VAC
3 Amp
DC Control Solid State Relay (SSR)

The 120D3 is a DC-controlled Power Series relay that switches 120 VAC at up to 3 A.

Power Series relays provide 4000 volts of isolation between input and output, and offer zero-voltage turn-on and zero-current turn-off. They are UL and CSA recognized and are a CE component, UKCA certified.

Lots of information on choosing and using SSRs can be found in the SSR data sheet. Also see the Manufacturers' part number cross-reference list.

This SSR carries a lifetime warranty.

NOTE: We do not recommend mounting the terminal side of the SSR to a flat PCB (printed circuit board) or other flat surface, because there may be some variation in terminal height from one terminal to another and from one SSR to another. Use the MP or P series SSRs for PCB mounting.

Specifications:

Optical Isolation Input to Output	4,000 V
Turn-on Time	½ cycle maximum
Turn-off Time	½ cycle maximum
Operating Frequency	25 to 65 Hz (operates at 400 Hz with six times off-state leakage)
Coupling Capacitance Input to Output	8 pF maximum
DV/DT Off-state	200 volts per microsecond
DV/DT Commutating	Snubbed for rated current at 0.5 power factor

	120D3	120D10	120D25	120D45
Nominal AC Line Voltage	120	120	120	120
Nominal Current Rating (Amps)	3*	10*	25*	45*
1 cycle Surge (Amps) Peak	85	110	250	650
Nominal Signal Input Resistance (Ohms)	1000	1000	1000	1000
Signal Pick-up Voltage	3VDC (32V allowed)	3VDC (32V allowed)	3VDC(32V allowed)	3VDC (32V allowed)
Signal Drop-out Voltage	1 VDC	1 VDC	1 VDC	1 VDC
Peak Repetitive Voltage Maximum	600	600	600	600
Maximum Output Voltage Drop	1.6 volts	1.6 volts	1.6 volts	1.6 volts
Off-State Leakage (mA) Maximum	2.5mA	7 mA	7 mA	7 mA
Operating Voltage Range (Volts AC)	12 - 140	12 - 140	12 - 140	12 - 140
I²t Rating t=8.3 (ms)	30	50	250	1750
Isolation Voltage	4,000V_RMS	4,000V_RMS	4,000V_RMS	4,000V_RMS
Ã¸jc** (°C/Watt)	11	1.3	1.2	0.67
Dissipation (Watts/Amp)	1.7	1.6	1.3	0.9
Notes: * Ambient temperature will affect the current rating. For details, see the Thermal Ratings charts in the Solid State Relays Data Sheet (form 0859). ** Ã¸jc = Thermal resistance from internal junction to base. Maximum internal junction temperature is 110 °C.

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