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Q4010LTTP
TRIAC, 400V, 10A, TO-220AB-3
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: LITTELFUSE
- Product type:
- Peak Repetitive Off State Voltage:400V; On State RMS Current:10A; Triac Case Style:TO-220AB; Gate Trigger Voltage Max:-; Peak Non Repetitive Surge Current:100A; Holding C 89Y6321
- MSL: -
- No. of Pins: 3Pins
- Product Range: QxxxxLTx Series
- Triac Case Style: TO-220AB
- Thyristor Mounting: Through Hole
- Holding Current Max: 60mA
- On State RMS Current: 10A
- Peak On State Voltage: 1.6V
- Gate Trigger Voltage Max: -
- Operating Temperature Max: 125°C
- Peak Non Repetitive Surge Current: 100A
- Peak Repetitive Off State Voltage: 400V
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 1.55 € |
| Current stock | 500+ |
| Lead time | 30 days |
Datasheet
**Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs ~~RoHS [~~ ## QxxxxLTx Series ## **Description** ~~PO~~ The Quadrac is an internally triggered Triac designed for AC switching and phase control applications. It is a Triac and DIAC in a single package, which saves user expense by eliminating the need for separate Triac and DIAC components. Standard type devices normally operate in Quadrants I & III triggered from AC line. Alternistor type Quadracs are used in circuits requiring high dv/dt capability. ## CT **Features & Benefits** **Agency Approval** bo Agency Agency File Number **®** L Package : E71639 ~~EO~~~ - RoHS Compliant • Surge capability up to 200 A - Glass – passivated junctions - Voltage capability up to 600 V **==> picture [504 x 25] intentionally omitted <==** **----- Start of picture text -----**<br> Schematic Symbol<br>Applications<br>ee<br>**----- End of picture text -----**<br> MT2 MT1 T ## **Main Features** Lo |Symbol|Value|Unit| |---|---|---| |IT(RMS)|4 to 15|A| |VDRM/ VRRM|400 to 600|V| |DIAC VBO|33 to 43|V| Excellent for AC switching and phase control applications such as lighting and heating. Typical applications are AC solid-state switches, light dimmers, power tools, home/ brown goods and white goods appliances. Alternistor Quadracs (no snubber required) are used in applications with extremely inductive loads requiring highest commutation performance. Internally constructed isolated package is offered for ease of heat sinking with highest isolation voltage. **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **1** Revised: 06/05/14 **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** ## **Absolute Maximum Ratings** **==> picture [506 x 208] intentionally omitted <==** **----- Start of picture text -----**<br> Value<br>Symbol Parameter Unit<br>Qxx04LT: TC = 95°C<br>IT(RMS) RMS forward current Qxx06LT/Qxx08LT/Qxx10LT: TC = 90°C 4 6 8 10 15 A<br>Qxx15LT: TC = 80°C<br>single half cycle; f = 50Hz;<br>46 65 83 100 167<br>ITSM Peak non-repetitive surge current single half cycle; f = 60Hz;TJ (initial) = 25°C A<br>55 80 100 120 200<br>TJ (initial) = 25°C<br>I [2] t I [2] t value for fusing tp = 8.3ms 12.5 26.5 41 60 166 A [2] s<br>di/dt Critical rate-of-rise of on-state current f = 60Hz; TJ =125°C 50 70 100 A/µs<br>IGM Peak gate current TJ = 125°C 1.5 A<br>Tstg Storage temperature range -40 to 150 °C<br>TJ Operating junction temperature range -40 to 125 °C<br>Qxx04LT Qxx06LT / Qxx06LTH Qxx08LT / Qxx08LTH Qxx10LT / Qxx10LTH Qxx15LT / Qxx15LTH<br>**----- End of picture text -----**<br> Note: xx = voltage ## **Electrical Characteristics (TJ = 25°C, unless otherwise specified) – Standard Quadrac** **==> picture [506 x 158] intentionally omitted <==** **----- Start of picture text -----**<br> Value<br>Symbol Test Conditions Unit<br>IH IT = 200mA (initial) MAX. 40 50 60 60 70 mA<br>400V 75 150 175 200 300<br>VD = VDRM; gate open; TJ=100°C MIN. 600V 50 125 150 175 200<br>dv/dt V/μs<br>400V 50 100 120 150 200<br>VD = VDRM; gate open; TJ=125°C MIN. 600V 50 85 100 120 150<br>dv/dt(c) di/dt(c) = 0.54 x IT(rms) / ms; TJ = 125°C MIN. 3 4 V/μs<br>tgt (note 1) TYP. 3 μs<br>Qxx04LT Qxx06LT Qxx08LT Qxx10LT Qxx15LT<br>**----- End of picture text -----**<br> (1) Reference test circuit in figure 10 and waveform in figure 11; CT = 0.1μF with 0.1μs rise time. Note: xx = voltage ## **Electrical Characteristics (TJ = 25°C, unless otherwise specified) – Alternistor Quadrac** **==> picture [506 x 162] intentionally omitted <==** **----- Start of picture text -----**<br> Value<br>Symbol Test Conditions Unit<br>IH IT = 20mA (initial) MAX. 50 50 60 70 mA<br>400V 575 925<br>VD = VDRM; gate open; TJ=100°C MIN. 600V 425 775<br>dv/dt V/μs<br>400V 450 700<br>VD = VDRM; gate open; TJ=125°C MIN. 600V 350 600<br>dv/dt(c) di/dt(c) = 0.54 x IT(rms) / ms; TJ = 125°C MIN. 25 30 V/μs<br>tgt (note 1) TYP. 3 μs<br>Qxx06LTH Qxx08LTH Qxx10LTH Qxx15LTH<br>**----- End of picture text -----**<br> (1) Reference test circuit in figure 10 and waveform in figure 11; CT = 0.1μF with 0.1μs rise time. Note: xx = voltage **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **2** Revised: 06/05/14 **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** ## **Trigger DIAC Specifications** **==> picture [507 x 103] intentionally omitted <==** **----- Start of picture text -----**<br> Symbol Test Conditions Value Unit<br>ΔVBO Breakover Voltage Symmetry MAX. 3 V<br>MIN. 33<br>VBO Breakover Voltage, forward and reverse MAX. 43 V<br>[ΔV±] Dynamic Breakback Voltage, forward and reverse (note 1) MIN. 5 V<br>IBO Peak Breakover Current MAX. 25 uA<br>CT Trigger Firing Capacitance MAX. 0.1 µF<br>**----- End of picture text -----**<br> (1) Reference test circuit in figure 10 and waveform in figure 11. ## **Static Characteristics** **==> picture [506 x 267] intentionally omitted <==** **----- Start of picture text -----**<br> Symbol Test Conditions Value Unit<br>VTM IT = 1.41 x IT(rms) A; tp = 380μs MAX. 1.6 V<br>TJ = 25°C 10<br>IDRM / IRRM VDRM / VRRM TJ = 100°C MAX. 500 µA<br>TJ = 125°C 2000<br>Thermal Resistances<br>Symbol Parameter Value Unit<br>Qxx04LT 3.6<br>Qxx06LT /<br>3.3<br>Qxx06LTH<br>Qxx08LT /<br>2.8<br>R θ (J-C) Junction to case (AC) Qxx08LTH °C/W<br>Qxx10LT /<br>2.6<br>Qxx10LTH<br>Qxx15LT /<br>2.1<br>Qxx15LTH<br>R θ (J-A) Junction to ambient 50 °C/W<br>**----- End of picture text -----**<br> Note : xx = voltage **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **3** Revised: 06/05/14 **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** **==> picture [245 x 430] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 1: Normalized DC Holding Current<br>vs. Junction Temperature<br>2.0<br>1.5<br>1.0<br>0.5<br>0.0<br>-40 -15 10 35 60 85 110<br>Junction Temperature (TJ) -- °C<br>Figure 3: On-State Current vs. On-State Voltage<br>(Typical) (6A to 15A)<br>50<br>45 TJ = 25°C<br>40<br>35 Qxx15LT<br>Qxx15LTH<br>30<br>25<br>20<br>15 Qxx06LT/Qxx06LTH<br>Qxx08LT/Qxx08LTH<br>10 Qxx10LT/Qxx10LTH<br>5<br>0<br>0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7<br>Instantaneous On-state Voltage (vT) – Volts<br> = 25°C)(TRatio of I/IJHH<br>) – AmpsInstantaneous On-state Current (iT<br>**----- End of picture text -----**<br> **Figure 5: Power Dissipation vs. RMS On-State Current (Typical) (6A to 15A)** **==> picture [243 x 176] intentionally omitted <==** **----- Start of picture text -----**<br> 18<br>16<br>14<br>Qxx15LT<br>12 Qxx15LTH<br>Qxx06LT/Qxx06LTH<br>Qxx08LT/Qxx08LTH<br>10 Qxx10LT/Qxx10LTH<br>8<br>6<br>4<br>CURRENT WAVEFORM: Sinusoidal<br>2 LOAD: Resistive or Inductive<br>CONDUCTION ANGLE: 360°<br>0<br>0 2 4 6 8 10 12 14 16<br>RMS On-State Current [IT(RMS)] - (Amps)<br>] - (Watts)<br>D(AV)<br>[P<br>Average On-State Power Dissipation<br>**----- End of picture text -----**<br> **==> picture [244 x 206] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 2: On-State Current vs. On-State Voltage<br>(Typical) (4A)<br>16<br>14 TJ = 25°C<br>12<br>10<br>Qxx04LT<br>8<br>6<br>4<br>2<br>0<br>0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6<br>Instantaneous On-state Voltage (vT) – Volts<br>) – AmpsInstantaneous On-state Current (iT<br>**----- End of picture text -----**<br> **==> picture [244 x 27] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 4: Power Dissipation vs. RMS On-State<br>Current (Typical) (4A)<br>**----- End of picture text -----**<br> **==> picture [244 x 399] intentionally omitted <==** **----- Start of picture text -----**<br> 4.0<br>3.5<br>3.0<br>2.5 Qxx04LT<br>2.0<br>1.5<br>1.0<br>CURRENT WAVEFORM: Sinusoidal<br>0.5 LOAD: Resistive or Inductive<br>CONDUCTION ANGLE: 360°<br>0.0<br>0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0<br>RMS On-State Current [IT(RMS)] - (Amps)<br>Figure 6: Maximum Allowable Case Temperature<br>vs. RMS On-State Current<br>130<br>CURRENT WAVEFORM: Sinusoidal<br>LOAD: Resistive or Inductive<br>120 Qxx08LT CONDUCTION ANGLE: 180°<br>Qxx08LTH<br>110<br>Qxx10LT<br>Qxx10LTH<br>100<br>Qxx04LT Qxx15LTQxx15LTH<br>90<br>Qxx06LT<br>Qxx06LTH<br>80<br>70<br>0 2 4 6 8 10 12 14 16<br>RMS On-State Current [IT(RMS)] - Amps<br>] - (Watts)<br>D(AV)<br>[P<br>Average On-State Power Dissipation<br>) - °C(TC<br>Maximum Allowable Case Temperature<br>**----- End of picture text -----**<br> **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **4** Revised: 06/05/14 **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** **Figure 7: Surge Peak On-State Current vs.** ~~**Number of Cycles**~~ **==> picture [270 x 179] intentionally omitted <==** **----- Start of picture text -----**<br> 1000<br>Qxx15LT/Qxx15LTH<br>Qxx10LT/Qxx10LTH<br>100<br>Qxx08LT/Qxx08LTH<br>Qxx06LT/Qxx06LTH<br>10<br>Qxx04LT<br>1<br>1 10 100 1000<br>Surge Current Duration -- Full Cycles<br>) – Amps<br>TSM<br>Peak Surge (Non-repetitive) On-state Current (I<br>**----- End of picture text -----**<br> Supply Frequency: 60Hz Sinusoidal Load: Resistive Value at Specific Case TemperatureRMS On-State Current: [IT(RMS)]: Maximum Rated Notes: 1. Gate control may be lost during and immediately following surge current interval. 2. Overload may not be repeated until junction temperature has returned to steady-state rated value. Note: xx = voltage **==> picture [244 x 195] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 8: DIAC VBO Change vs. Junction Temperature<br>4%<br>2%<br>0%<br>-2%<br>-4%<br>-6%<br>-8%<br>10%<br>-40 -20 0 20 40 60 80 100 120<br>Junction Temperature (TJ) -- °C<br> Change -- %<br>BO<br>V<br>**----- End of picture text -----**<br> **Figure 10: Test Circuit Waveform** **==> picture [244 x 179] intentionally omitted <==** **----- Start of picture text -----**<br> VC<br>+VBO<br>∆V+<br>0 t<br>∆V-<br>-VBO<br>IL<br>+IPK<br>0 t<br>-IPK<br>Typical pulse base width is 10μs<br>**----- End of picture text -----**<br> **==> picture [245 x 414] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 9: Test Circuit<br>RL<br>D.U.T. MT2<br>120 V<br>60 Hz<br>T<br>VC MT1<br>CT = 0.1 µF<br>Figure 11: Peak Output Current vs Triggering<br>Capacitance (Per Figure 9)<br>300<br>250<br>200<br>150<br>100<br>50<br>0<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0<br>Triggering Capacitance (CT) – μF<br>Typical (35V Device)<br>) – mA<br>PK<br>Peak Output Current (I<br>**----- End of picture text -----**<br> **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **5** Revised: 06/05/14 **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** ## **Soldering Parameters** |Refow Condition|Refow Condition|Pb – Free assembly| |---|---|---| |Pre Heat<br>- Temperature Min (Ts(min))<br>- Temperature Max (Ts(max))<br>- Time (min to max) (ts)<br>Average ramp up rate (Liquidus Temp)<br>(TL) to peak||150°C<br>200°C<br>60 – 180 secs<br>5°C/second max| |TS(max)to TL|- Ramp-up Rate|5°C/second max| |Refow|- Temperature (TL) (Liquidus)<br>- Temperature (tL)|217°C<br>60 – 150 seconds| |Peak Temperature (TP)||260+0/-5°C| |Time within 5°C of actual peak<br>Temperature (tp)||20 – 40 seconds| |Ramp-down Rate||5°C/second max| |Time 25°C|to peak Temperature (TP)|8 minutes Max.| |Do not exceed||280°C| |**Physical Specifcations**|**Physical Specifcations**| |---|---| ||| |**Terminal Finish**<br>**Body Material**|1005 Matte Tin-plated<br>UL Recognized epoxy meeting<br>fammability classifcation 94v-0| |**Lead Material**|Copper Alloy| ## **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. **==> picture [243 x 150] intentionally omitted <==** **----- Start of picture text -----**<br> t P<br>T P<br>Ramp-up<br>T S(max) T L t L<br>Ramp-down<br>Preheat<br>T S(min)<br>t S<br>25<br>time to peak temperature Time<br>Temperature<br>**----- End of picture text -----**<br> ## **Environmental Specifications** **==> picture [246 x 250] intentionally omitted <==** **----- Start of picture text -----**<br> Test Specifications and Conditions<br>MIL-STD-750: Method 1040, Condition A<br>High Temperature<br>Voltage Blocking Rated VDRM (VAC-peak), 125°C, 1008<br>hours<br>MIL-STD-750: Method 1051<br>Temperature Cycling -40°C to 150°C, 15-minute dwell,<br>100 cycles<br>Biased Temperature & EIA/JEDEC: JESD22-A101<br>Humidity 320VDC, 85°C, 85%RH, 1008 hours<br>MIL-STD-750: Method 1031<br>High Temp Storage<br>150°C, 1008 hours<br>Low-Temp Storage -40°C, 1008 hours<br>MIL-STD-750: Method 1056<br>Thermal Shock 0°C to 100°C, 5-minute dwell,<br>10-second transfer, 10 cycles<br>Autoclave EIA/JEDEC: JESD22-A102<br>(Pressure Cooker Test) 121°C, 100%RH, 2atm, 168 hours<br>Resistance to MIL-STD-750: Method 2031<br>Solder Heat 260°C, 10 seconds<br>Solderability ANSI/J-STD-002, Category 3, Test A<br>Lead Bend MIL-STD-750: Method 2036, Condition E<br>**----- End of picture text -----**<br> **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. Revised: 06/05/14 **6** **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** ## **Dimensions — TO-220AB (L-Package) — Is** ~~**olated Mounting Tab**~~ **==> picture [500 x 254] intentionally omitted <==** **----- Start of picture text -----**<br> TC MEASURING POINT Inches Millimeters<br>E A O P 8.13.320 Dimension Min Max Min Max<br>B A 0.380 0.420 9.65 10.67<br>C AREA (REF.)<br>0.17 in [2] 13.36 B 0.105 0.115 2.67 2.92<br>D .526<br>7.01 C 0.230 0.250 5.84 6.35<br>.276<br>D 0.590 0.620 14.99 15.75<br>E 0.142 0.147 3.61 3.73<br>F<br>F 0.110 0.130 2.79 3.30<br>R<br>G G 0.540 0.575 13.72 14.61<br>L<br>H H 0.025 0.035 0.64 0.89<br>J 0.195 0.205 4.95 5.21<br>K N K 0.095 0.105 2.41 2.67<br>J M<br>MT1 MT2 T (Trigger) Note: Maximum torque L 0.060 0.075 1.52 1.91<br>to be applied to mounting tab<br>is 8 in-lbs. (0.904 Nm). M 0.085 0.095 2.16 2.41<br>N 0.018 0.024 0.46 0.61<br>O 0.178 0.188 4.52 4.78<br>P 0.045 0.060 1.14 1.52<br>R 0.038 0.048 0.97 1.22<br>**----- End of picture text -----**<br> ## **Product Selector** **==> picture [506 x 178] intentionally omitted <==** **----- Start of picture text -----**<br> Voltage<br>Part Number Type Package<br>400V 600V 800V 1000V<br>Qxx04LT X X Quadrac TO-220L<br>Qxx06LT X X Quadrac TO-220L<br>Qxx06LTH X X Alternistor Quadrac TO-220L<br>Qxx08LT X X Quadrac TO-220L<br>Qxx08LTH X X Alternistor Quadrac TO-220L<br>Qxx10LT X X Quadrac TO-220L<br>Qxx10LTH X X Alternistor Quadrac TO-220L<br>Qxx15LT X X Quadrac TO-220L<br>Qxx15LTH X X Alternistor Quadrac TO-220L<br>**----- End of picture text -----**<br> Note: xx = Voltage **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **7** Revised: 06/05/14 **Teccor[®] brand Thyristors** 4 / 6 / 8 / 10 / 15 Amp Quadracs **==> picture [93 x 32] intentionally omitted <==** ## **Packing Options** **==> picture [399 x 267] intentionally omitted <==** **----- Start of picture text -----**<br> Part Number Marking Weight Packing Mode Base Quantity<br>Qxx04LT Qxx04LT 2.2 g Bulk 500<br>Qxx04LTTP Qxx04LT 2.2 g Tube 500 (50 per tube)<br>Qxx06LT Qxx06LT 2.2 g Bulk 500<br>Qxx06LTTP Qxx06LT 2.2 g Tube 500 (50 per tube)<br>Qxx06LTH Qxx06LTH 2.2 g Bulk 500<br>Qxx06LTHTP Qxx06LTH 2.2 g Tube 500 (50 per tube)<br>Qxx08LT Qxx08LT 2.2 g Bulk 500<br>Qxx08LTTP Qxx08LT 2.2 g Tube 500 (50 per tube)<br>Qxx08LTH Qxx08LTH 2.2 g Bulk 500<br>Qxx08LTHTP Qxx08LTH 2.2 g Tube 500 (50 per tube)<br>Qxx10LT Qxx10LT 2.2 g Bulk 500<br>Qxx10LTTP Qxx10LT 2.2 g Tube 500 (50 per tube)<br>Qxx10LTH Qxx10LTH 2.2 g Bulk 500<br>Qxx10LTHTP Qxx10LTH 2.2 g Tube 500 (50 per tube)<br>Qxx15LT Qxx15LT 2.2 g Bulk 500<br>Qxx15LTTP Qxx15LT 2.2 g Tube 500 (50 per tube)<br>Qxx15LTH Qxx15LTH 2.2 g Bulk 500<br>Qxx15LTHTP Qxx15LTH 2.2 g Tube 500 (50 per tube)<br>**----- End of picture text -----**<br> Note: xx = Voltage **==> picture [504 x 192] intentionally omitted <==** **----- Start of picture text -----**<br> Part Numbering System Part Marking System<br>Q 60 10 L T H 56 TO-220 AB - (L Package)<br>DEVICE TYPE<br>Q: Quadrac LEAD FORM DIMENSIONS<br>xx: Lead Form Option<br>VOLTAGE RATING<br>40: 400V TRIAC TYPE Q6010LTH<br>60: 600V (blank): Standard Triac YMXXX<br>H: Alternistor Triac<br>CURRENT RATING Trigger T: Internal Diac (33V – 43V) ®<br>04: 4A<br>06: 6A PACKAGE TYPE<br>08: 8A10: 10A L: TO-220 (Isolated)<br>15: 15A<br>Date Code Marking<br>Y:Year Code<br>M: Month Code<br>XXX: Lot Trace Code<br>**----- End of picture text -----**<br> **QxxxxLTx Series** ©2014 Littelfuse, Inc Specifications are subject to change without notice. **8** Revised: 06/05/14
Updated at June 8, 2026
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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