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Solid-state Timer


5 VDC, Output Time-limit: SPST-NO Time-limit: SPST-NC, One shot output/Signal OFF delay, Time range: 0.1 to 1 s (4 range), PCB terminal

Rated power supply voltage 5 VDC Ripple 3% max.
Control output (Type) Time-limit: SPST-NO ,Time-limit: SPST-NC
Operating resetting Instantaneous operation, time-limit resetting/external resetting
Connecting method PCB terminal

Item list of H3FA

  • Ratings/Specifications
Rated power supply voltage5 VDC Ripple 3% max.
Allowable voltage variable range90 to 110% of the power supply voltage
Power consumptionApprox. 230 mW
Number of time ranges4
Time range (n)0.1 to 1 s
1 to 10 s
0.1 to 1 min
1 to 10 min
Operation modeOne shot output, Signal OFF delay
Control output (Type)Time-limit: SPST-NO ,Time-limit: SPST-NC
Control output (Contact output)3 A at 250 VAC (Resistive load)
Minimum applicable load: 10 mA at 5 VDC (failure level: P Reference value)
Operating resettingInstantaneous operation, time-limit resetting/external resetting
Ambient temperature rangeOperating: -10 to 55℃ (non-icing)
Storage: -25 to 65℃ (non-icing)
Ambient humidity rangeOperating: 35 to 85%
Accuracy of operating time±0.5% FS max. (±0.5% ±10 ms in a range of 1 s)
Setting error0 to +30% FS max. (at 20 ℃, rated voltage)
Reset time10 ms max.
Influence of voltage±2% FS max.
Influence of temperature±5% FS max.
±5% ±10 ms max. in a range of 1 s
Insulation resistance100 MΩ min. (at 500 VDC)
Dielectric strengthBetween control output terminals and operating circuit: 1,500 VAC 50/60 Hz 1 min
Between non-continuous contacts: 1,000 VAC 50/60 Hz 1 min
Vibration resistanceDestruction: 10 to 55 Hz, 0.375 mm single amplitude each in 3 directions for 2 h
Malfunction: 10 to 55 Hz, 0.25 mm single amplitude each in 3 directions for 10 min
Shock resistanceDestruction: 1,000 m/s**2, 3 times each in 6 directions
Malfunction: 100 m/s**2, 3 times each in 6 directions
Life expectancy (relay output)Electrical: 100,000 operations min. (3 A at 250 VAC, resistive load at 1800 operations/h)
Mechanical: 10 million operations min. (under no load at 1,800 operations/h)
Connecting methodPCB terminal
WeightApprox. 15 g
  • Dimensions

Outline drawing

  • Internal connection

Internal connection

  • Time ranges

Time ranges

  • Operating chart

Operating chart

One shot output

Signal OFF delay


Solid-state Timer