DESCRIPTION
The TCET1200 consists of a phototransistor optically
coupled to a gallium arsenide infrared-emitting diode in a
4 pin plastic dual inline package.

FEATURES
• High common mode rejection
• CTR offered in 5 groups
• Low temperature coefficient of CTR
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912

APPLICATIONS
• Switch-mode power supplies
• Line receiver
• Computer peripheral interface
• Microprocessor system interface
• Reinforced isolation provides circuit protection against
electrical shock (safety class II)
• Circuits for safe protective separation against electrical
shock according to safety class II (reinforced isolation):
- for appl. class I - IV at mains voltage ≤ 300 V
- for appl. class I - III at mains voltage ≤ 600 V
according to DIN EN 60747-5-5 (VDE 0884-5)

AGENCY APPROVALS
• UL1577
• cUL1577
• DIN EN 60747-5-5 (VDE 0884-5)
• BSI
• CQC GB8898-2011
• CQC GB4943.1-2011