FA55

The FA55 responds very quickly to induced lightning and electrostatic discharges.
Capable of passing many types of AC withstand tests.
Ideal for protecting power supplies from power line voltage surges.

Features

  • Small size (φ5.5mm, length = 7mm).
  • Allows performing the AC withstand voltage test.
  • Quick response for voltage surges and low limiting voltage.
  • Small capacitance and excellent insulation resistance.
  • Stable for repeated discharge tests and for many environmental fluctuations.
  • Axial and radial taping available.
  • No polarity.
  • No dark effect.
  • The FA55 surge absorber combined in series with a varistor is used for surge protection in many types of power supplies.

Dimensions

 

 

 

Note 1) Max diameter.
Note 2) The longer of glass width or stud width.


Characteristics

Part Number Impulse Sparkover
Voltage
1.2/50μs
Insulation Resistance
(IR)
Electrostatic Capacitance
1kHz-6V
Surge Current Capacity
8/20μs
Surge Life Test
8/20μs
100A
FA55-272 4500V max ≥ 100MΩ 500VDC 1pF max 2500A 300times
FA55-302 5000V max
FA55-362 5000V max
FA55-402 6000V max
Part Number AC Withstanding Voltage DC Sparkover Voltage
VS
*Reference value
UL Recognized EN Recognized
3)
UL 1449
4)
EN60065
EN60950-1
FA55-272 1000VAC-1min 2700V (2160 ~ 3240) ○ 1)  
1200VAC-3s
FA55-302 1500VAC-1min 3000V (2400 ~ 3600) ○ 1) ○ 2)
FA55-362 1800VAC-3s 3600V (2880 ~ 4320) ○ 1) ○ 2)
FA55-402 2000VAC-1min 4000V (3200 ~ 4800) ○ 1) ○ 2)

1): Approved if used with a varistor (125VAC: V1mA ≧ 270V, D ≧ φ10mm, 250VAC: V1mA ≧ 470V, D ≧ φ10mm) connected in series (soldered, crimped, or welded).
2): Approved if used with a varistor (250VAC: V1mA ≧ 470V, D ≧ φ5mm) connected in series (soldered, crimped, or welded).
3): UL Standard 1449 File No.E318314
4): FA55 recognized for EN60065, EN60950-1 through TÜV. Report No. J50189760

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