FOD4208 Fairchild Semiconductor, FOD4208 Datasheet - Page 8

• Manufacturer Part Number: FOD4208
• Description: Triac & SCR Output Optocouplers 800V RANDOM PHASE TRIAC
• Manufacturer: Fairchild Semiconductor

Specifications of FOD4208

• Configuration: 1
• Maximum Input Current: 30 mA
• Maximum Operating Temperature: + 100 C
• Maximum Power Dissipation: 500 mW
• Maximum Reverse Diode Voltage: 6 V
• Maximum Turn-on Time: 60 us
• Minimum Operating Temperature: - 55 C
• Output Type: AC
• Package / Case: PDIP Black
• Typical Input Voltage: 1.28 V
• Zero-crossing Circuit: No
• Output Device: Triac
• Isolation Voltage: 5000 Vrms
• Peak Output Voltage (vdrm): 800 V
• Maximum Input Voltage: 1.5 V
• Maximum Output Voltage: 560 VAC
• Minimum Trigger Current: 0.75 mA (Typ)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

©2004 Fairchild Semiconductor Corporation
FOD420, FOD4208, FOD4216, FOD4218 Rev. 1.4.0
Suggested method of firing two, back-to-back SCR’s with a Fairchild triac driver. Diodes can be 1N4001; resistors,
R1 and R2, are optional 330 .
Note: This optoisolator should not be used to drive a load directly. It is intended to be a discrete triac driver device
only.
V
CC
R
in
1
2
3
FOD4208
FOD4216
FOD4218
FOD420
Figure 12. Inverse-Parallel SCR Driver Circuit
6
5
4
R1
360
D1
8
SCR
R2
D2
SCR
LOAD
240 VAC
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