VISHAY TCDT1120 TCDT1120G Optocoupler, Phototransistor Output User Manual - Data Sheet
Summary
Achieve reliable electrical isolation with these versatile phototransistor optocouplers. Designed for critical applications like switch-mode power supplies, office equipment, and data processing systems requiring reinforced safety separation. This technical guide details comprehensive specifications—including CTR variations, maximum ratings, and compliance with stringent standards (DIN EN 60747-5). Ideal for engineers needing a high-performance, robust solution that ensures component protection against electrical shock and guarantees system reliability.
Page 1 Text Content
TCDT1120/ TCDT1120G
Vishay Semiconductors
Optocoupler, Phototransistor Output
Features Extra low coupling capacity - typical 0.2 p F High Common Mode Rejection Four CTR groups available
Lead-free component
Component in accordance to Ro HS 2002/95/EC and WEEE 2002/96/EC
e3 Pb
Agency Approvals
Pb-free
UL1577, File No. E76222 System Code A, Double
(–) nc
Protection
BSI IEC60950 IEC60065
VDE Standards
DIN EN 60747-5-2 (VDE0884)
These couplers perform safety functions according to the following
DIN EN 60747-5-5 pending
equipment standards:
FIMKO DIN EN 60747-5-2(VDE0884)/ DIN EN 60747-5-5
pending
Applications
Optocoupler for electrical safety requirements
Switch-mode power supplies IEC 60950/EN 60950 Line receiver
Office machines (applied for reinforced isolation for mains voltage Computer peripheral interface ≤ 400 VRMS) Microprocessor system interface VDE 0804
Reinforced Isolation provides circuit protection Telecommunication apparatus and data processing against electrical shock (Safety Class II) IEC 60065 Circuits for safe protective separation against electri-
Safety for mains-operated electronic and related household appa-
cal shock according to safety class II (reinforced iso-
ratus
lation): • For appl. class I - IV at mains voltage ≤ 300 V
Order Information
• For appl. class I - III at mains voltage ≤ 600 V accord-
Part Remarks
ing to DIN EN 60747-5-2(VDE0884)/ DIN EN 60747-
TCDT1120 CTR > 40 %, DIP-6
5-5 pending, table 2.
TCDT1122 CTR 63 - 125 %, DIP-6 Description TCDT1123 CTR 100 - 200 %, DIP-6 TCDT1124 CTR 160 - 320 %, DIP-6
The TCDT1120(G) series consists of a phototransis-
tor optically coupled to a gallium arsenide infrared- TCDT1120G CTR > 40 %, DIP-6
emitting diode in a 6-lead plastic dual inline package. TCDT1122G CTR 63 - 125 %, DIP-6 The elements are mounted on one leadframe using a TCDT1123G CTR 100 - 200 %, DIP-6 coplanar technique, providing a fixed distance
TCDT1124G CTR 160 - 320 %, DIP-6
between input and output for highest safety require-
G = Leadform 10.16 mm; G is not marked on the body
ments.
Document Number 83532 www.vishay.com Rev. 1.6, 26-Oct-04
Page Summary Contents For VISHAY TCDT1120 TCDT1120G Optocoupler, Phototransistor Output User Manual - Data Sheet
Manual Details
| Brand | Vishay |
|---|---|
| Pages | 10 |
| File Size | 193.53 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
What electrical standards does this optocoupler comply with?
It complies with UL1577, BSI IEC60950/EN 60950, and supports safety functions according to DIN EN 60747-5-2.
How is the Current Transfer Ratio (CTR) specified for different models?
The CTR varies by model; for instance, TCDT1120G has a typical CTR > 40%, while TCDT1124G offers 160-320%.