[8] 3. Explanations Current Transfer Ratio (CTR) Rank, Trigger LED Current (IFT) Rank and Markings Transistor photocouplers are ranked for CTR and SCR, and Triac photocouplers and Photorelays are ranked for IFT. These rankings are shown in the table below. 3.1 CTR Rank and Markings (: available, : call Toshiba) Rank Device A or none YG GB Y GR BL GRL GRH TLP120 TLP121 TLP180 TLP181 TLP280 TLP280-4 TLP281 TLP281-4 TLP321 TLP321-2/-3/-4 TLP521-1 TLP521-2 TLP521-4 TLP531/532 TLP620 TLP620-2 TLP620-4 TLP621 TLP621-2 TLP621-4 Marking group TLP630 TLP631/632 TLP731/732 TLP733F/734F 167 [8] Explanations Marking Group Rank CTR A or None 50 to 600% CTR Rank Mark Blank, Y, Y , G, G , B, B , GB YG 50 to 300% Y, Y , G, G GB 100 to 600% GB, G, G , B, B Y 50 to 150% Y, Y GR 100 to 300% G, G BL 200 to 600% B, B GRL 100 to 200% G GRH 150 to 300% G Marking Group 3.2 Rank CTR CTR Rank Mark A or None 50 to 600% Blank, YG, GB, GR, BL GB 100 to 600% GB, GR, BL GR 100 to 300% GR BL 200 to 600% BL IFT Rank and Markings Rank IFT IFT Rank Mark None IFT max IFT7 7 mA max T7, T5 IFT5 5 mA max T5 IFT2 (Note6) 2 mA max T2 Blank, T7, T5 Note6: Only photorelay 3.3 Ordering Information To order photocouplers with rank selection, add rank name as a suffix to the standard part number. Examples: TLP181 (GR), TLP560G (IFT7) 3.4 Safety Standard Certification Use the Toshiba standard part numbers, without suffix, when applying for safety standards certification. Example: TLP621 (GR) TLP621 168 [8] 3.5 Marking Examples 3.5.1 For 1-ch Devices in DIP 4 pin and Mini-Flat Packages Explanations or Lot No. P Ex: TLP626: P626, TLP521-1: P521 Device name, without "TL" P521 TLP521-1 CTR or IFT rank mark Pin No.1 3.5.2 Others or Lot No. TLP Ex: TLP521-2: TLP521-2 TLP3063: TLP3063 Device Name CTR or IFT rank mark Pin No.1 3.5.3 TLP421 Pin No.1 Monthly Lot No. P421 Device Name Lot No. CTR rank mark Label example TYPE ADD.C TLP421 (D4-GR) Q'TY PCS. NOTE 169 TLP521-2 TLP521-2