Teccor® brand Thyristors 25 Amp Standard SCRs SK225xD Series RoHS Description Excellent unidirectional switches for phase control applications such as heating and motor speed controls. Standard phase control SCRs are triggered with few milliamperes of current at less than 1.5V potential. Features & Benefits • RoHS compliant • Voltage capability up to 1200 V • Surge capability up to 300 A Applications Agency Approval Agency • Electrically isolated package “LD -Package” and UL recognized for 2500VRMS Typical applications are AC solid-state switches, industrial power tools, line rectification 50/60Hz. Agency File Number Internally constructed isolated packages are offered for ease of heat sinking with highest isolation voltage. E71639 Main Features Schematic Symbol Symbol IT(RMS) VDRM /VRRM IGT Value Unit 25 A 1200 V 40 mA A K G SK225xD Series ©2015 Littelfuse, Inc Specifications are subject to change without notice. Revised: 08/20/15 Teccor® brand Thyristors 25 Amp Standard SCRs Absolute Maximum Ratings — 25A SCR Symbol Parameter Test Conditions VDRM /VRRM Repetitive Peak off-state/Reverse Voltage VDSM/VRSM Non-repetitive peak off-state/Reverse voltage IT(RMS) RMS on-state current IT(AV) Average on-state current ITSM Peak non-repetitive surge current I 2t I2t Value for fusing di/dt SK225RD TC=95°C SK225LD TC=75°C SK225RD TC=95°C V 1300 V 25 A 16 A single half cycle; f = 50Hz; TJ (initial) = 25°C 300 single half cycle; f = 60Hz; TJ (initial) = 25°C 360 tp = 8.3 ms 540 A 2s 50 A/μs 3 A Peak gate current TJ = 125°C Average gate power dissipation A TJ = 125°C 1 W Storage temperature range -40 to 150 °C Operating junction temperature range -40 to 125 °C Tstg TJ TC=75°C Unit 1200 Critical rate of rise of on-state current IGM PG(AV) SK225LD Value Notes : x = package Electrical Characteristics (TJ = 25°C, unless otherwise specified) Symbol IGT VGT Test Conditions Value Unit 40 mA MAX. VD = 12V; RL = 30Ω MAX. 1.5 V MIN. 1000 V/μs dv/dt VD = 2/3 VDRM; gate open; TJ = 125°C VGD VD = VDRM; RL = 3.3 kΩ; TJ = 125°C MIN. 0.2 V IH IT = 500mA (initial) MAX. 100 mA TYP. 15 μs TYP. 3 μs Value Unit 1.6 V IT=0.5A; tp=50µs; dv/dt=5V/µs; di/dt=-30A/µs tq IG = 2 x IGT; PW = 15µs; IT = 50A tgt Notes : x = package Static Characteristics Symbol VTM IDRM / IRRM Test Conditions IT = 50A; tp = 380μs MAX. TJ = 25°C VDRM / VRRM TJ = 125°C MAX. 10 μA 4 mA Thermal Resistances Symbol Rθ(J-C) SK225xD Series Parameter Junction to case (AC) Value SK225RD 1.0 SK225LD 1.9 Unit °C/W ©2015 Littelfuse, Inc Specifications are subject to change without notice. Revised: 08/20/15 Teccor® brand Thyristors 25 Amp Standard SCRs Figure 1: Normalized DC Gate Trigger Current vs. Junction Temperature Figure 2: N ormalized DC Gate Trigger Voltage vs. Junction Temperature 2.5 2.0 1.6 Ration of VGT /VGT (TJ=125o C) Ration of IGT /IGT (TJ =125o C) 2.0 1.5 1.0 0.5 0.0 1.2 0.8 0.4 -40 -15 10 35 60 85 0.0 110 125 Junction Temperature (TJ)-(o C) Intantaneous On-state Current (iT) – Amps Ration of I H /IH (TJ=125o C) 1.2 0.8 0.4 -40 -15 10 35 60 85 85 110 70 60 50 40 30 20 10 0 110 125 Figure 6: M aximum Allowable Case Temperature vs. RMS On-State Current Maximum Allowable Case Temperature (TC) - °C 30 25 20 15 10 5 5 10 15 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Instantaneous On-state Voltage (vT) – Volts Figure 5: Power Dissipation (Typical) vs. RMS On-State Current Average On-State Power Dissipation [PD(AV)] - (Watts) 60 80 Junction Temperature (TJ)-(o C) 20 RMS On-State Current [IT(RMS)] - (Amps) SK225xD Series 35 90 1.6 0 10 Figure 4: O n-State Current vs. On-State Voltage (Typical) 2.0 0 -15 Junction Temperature (TJ)-(o C) Figure 3: Normalized DC Holding Current vs. Junction Temperature 0.0 -40 25 130 120 SK225RD 110 100 90 SK225LD 80 70 60 50 40 CURRENT WAVEFORM: Sinusoidal LOAD: Resistive or Inductive CONDUCTION ANGLE: 180° 0 10 20 30 RMS On-State Current [IT(RMS)] - Amps ©2015 Littelfuse, Inc Specifications are subject to change without notice. Revised: 08/20/15 Teccor® brand Thyristors 25 Amp Standard SCRs Maximum Allowable Case Temperature (TC) - °C Figure 7: Maximum Allowable Case Temperature vs. Average On-State Current 130 SK225RD 120 110 100 90 SK225LD 80 70 60 50 40 CURRENT WAVEFORM: Sinusoidal LOAD: Resistive or Inductive CONDUCTION ANGLE: 180° 0 2 4 6 8 10 12 14 16 18 Average On-State Current [IT(AVE)] - Amps Peak Surge (Non-repetitive)On-state Current (ITSM) – Amps Figure 8: Surge Peak On-State Current vs. Number of Cycles 350 SUPPLY FREQUENCY: 50 Hz Sinusoidal LOAD: Resistive RMS On-State Current: [IT(RMS)]: Maximum Rated Value at Specified Case Temperature tp=10ms One cycle 300 250 Notes: 1. G ate control may be lost during and immediately following surge current interval. 2. O verload may not be repeated until junction temperature has returned to steady-state rated value. 200 150 100 50 0 1 10 100 1000 Surge Current Duration - Full Cycles Environmental Specifications Test AC Blocking Temperature Cycling Temperature/ Humidity Specifications and Conditions JESD22-A108C, 80% VDRM @125°C for 168 hours MIL-STD-750, M-1051, 100 cycles; -40°C to +150°C; 15-min dwell-time EIA / JEDEC, JESD22-A101 168 hours; 100V - DC: 85°C; 85% rel humidity Resistance to Solder Heat JESD22-B106C Solderability J-STD-022, category 3, test A SK225xD Series Design Considerations Careful selection of the correct device for the application’s operating parameters and environment will go a long way toward extending the operating life of the Thyristor. Good design practice should limit the maximum continuous current through the main terminals to 75% of the device rating. Other ways to ensure long life for a power discrete semiconductor are proper heat sinking and selection of voltage ratings for worst case conditions. Overheating, overvoltage (including dv/dt), and surge currents are the main killers of semiconductors. Correct mounting, soldering, and forming of the leads also help protect against component damage. ©2015 Littelfuse, Inc Specifications are subject to change without notice. Revised: 08/20/15 Teccor® brand Thyristors 25 Amp Standard SCRs Dimensions — TO-220AB (RD-Package) — Non-Isolated Mounting Tab Common with Center Lead Dimension ax E m 8m 3. ØM A H D V1 L3 F C2 L1 C3 L2 Note: Maximum torque to be applied to mounting tab is 3 in-lbs (0.3Nm). Min. Typ. Max. 4.40 4.60 0.173 0.181 0.61 0.88 0.024 0.035 C 0.46 0.70 0.018 0.028 C2 1.21 1.32 0.048 0.052 C3 2.40 2.72 0.094 0.107 D 8.60 9.70 0.339 0.382 E 9.60 10.4 0.378 0.409 F 6.20 6.60 0.244 0.260 29.8 1.102 1.70 0.045 2.95 0.104 2.54 28.0 L1 C Inches Max. B G B Typ. A H G Millimeters Min. 0.1 3.75 L2 1.14 L3 2.65 V1 1.173 0.148 45° 0.067 0.116 45° Dimensions — TO-220AB (LD-Package) — Isolated Mounting Tab Dimension ax E 3. C2 D V1 L3 H L1 C3 L2 Min. 4.40 4.60 0.173 B 0.61 0.88 0.024 0.035 C 0.46 0.70 0.018 0.028 B SK225xD Series 0.181 1.21 1.32 0.048 0.052 2.40 2.72 0.094 0.107 D 8.60 9.70 0.339 0.382 E 9.80 10.4 0.386 0.409 F 6.55 6.95 0.258 2.54 28.0 L1 Note: Maximum torque to be applied to mounting tab is 7 in-lbs. (0.8 Nm). Max. C3 G C Typ. C2 H G Typ. Inches Max. A A F ØM m 8m Millimeters Min. 29.8 1.102 3.75 1.14 1.70 0.045 L3 2.65 2.95 0.104 45° 1.173 0.148 L2 V1 0.274 0.1 0.067 0.116 45° ©2015 Littelfuse, Inc Specifications are subject to change without notice. Revised: 08/20/15 Teccor® brand Thyristors 25 Amp Standard SCRs Product Selector Gate Sensitivity Type Package SK225LD Part Number 40mA Standard SCR TO-220L SK225RD 40mA Standard SCR TO-220R Packing Options Marking Weight Packing Mode Base Quantity SK225LDTP Part Number SK225LD 2.2g Tube 1000 SK225RDTP SK225RD 2.0g Tube 1000 Part Numbering System Part Marking System S K2 25 LD TP DEVICE TYPE S: SCR PACKAGING TYPE TP: Tube Pack SK225RD YMMXXX VOLTAGE RATING K2: 1200V CURRENT RATING 25: 25A ® PACKAGE TYPE LD: TO-220 Isolated RD: TO-220 Non-Isolated Date Code Marking Y:Year Code MM: Month Code XXX: Lot Trace Code SK225xD Series ©2015 Littelfuse, Inc Specifications are subject to change without notice. Revised: 08/20/15