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Q6012LTH1LEDTP
Triac, Teccor®, 600 V, 12 A, TO-220AB, 110 A, 8 mA
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- Manufacturer: LITTELFUSE
- Product type:
- Peak Repetitive Off-State Voltage, Vdrm:600V; On State RMS Current IT(rms):12A; Triac Case Style:TO-220AB; Gate Trigger Current Max (QI), Igt:-; Gate Trigger Voltage Max Vgt:-; Peak
- MSL: MSL 1 - Unlimited
- SVHC: To Be Advised
- No. of Pins: 3Pins
- Product Range: Q6012LTH1LED
- Triac Case Style: TO-220AB
- Thyristor Mounting: Through Hole
- Holding Current Max: 8mA
- On State RMS Current: 12A
- Peak On State Voltage: 1.6V
- Gate Trigger Voltage Max: -
- Operating Temperature Max: 110°C
- Peak Non Repetitive Surge Current: 110A
- Peak Repetitive Off State Voltage: 600V
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 1.07 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**Teccor[®] brand Thyristors** 12 Amp Alternistor Quadrac for LED dimmer applications ## Q6012LTH1LED Series ## ~~RoHS |[__|SAM]~~ ## **Description** 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. Q6012LTH1LED series is designed to meet low load current characteristics typical in LED lighting applications. By keeping holding current at 8mA maximum, this Quadrac series is characterized and specified to perform best with LED loads. The Q6012LTH1LED series is best suited for LED dimming controls to obtain the lowest levels of light output with a minimum probability of flickering. **==> picture [379 x 162] intentionally omitted <==** **----- Start of picture text -----**<br> Agency Approval<br>Lo<br>Agency Agency File Number<br>L Package : E71639<br>Features<br>a EE<br>Main Features • As low as 8mA max<br>Lo<br>holding current<br>Symbol Value Unit<br>I 12 A<br>T(RMS) • UL Recognized TO-<br>VDRM / VRRM 600 V 220AB package<br>DIAC VBO 33 to 43 V<br>**----- End of picture text -----**<br> Q6012LTH1LED series is offered in the industry standard TO-220AB package with an isolated mounting tab that makes it best suited for adding an external heat sink. - **Features Benefits** • As low as 8mA max • Provides full control holding current of light out put at the extreme low end of load conditions. - • UL Recognized TO• 2500V AC min isolation 220AB package between mounting tab and active terminals - • 110°C rated junction • Improves margin of safe temperature operation with less heat sinking required - • di/dt performance of • Enable survivability 70A/μs of typically LED load operating characteristics - • QUADRAC version • Simplicity of circuit design includes intergrated DIAC & layout ## **Schematic Symbol** ~~Lo~~ **==> picture [95 x 36] intentionally omitted <==** **----- Start of picture text -----**<br> MT2 MT1<br>T<br>**----- End of picture text -----**<br> ## **Additional Information** **==> picture [198 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> Datasheet Resources Samples<br>**----- End of picture text -----**<br> ## **Applications** Excellent for AC switching and phase control applications such as lighting and motor speed controls. Typical applications are AC solid-state switches, light dimmers with LED loads, small low current motor in power tools, and low current motors in home/brown goods appliances. Internally constructed isolated package is offered for ease of heat sinking with highest isolation voltage. © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/02/16 **Teccor[®] brand Thyristors** 12 Amp Alternistor Quadrac for LED dimmer applications **==> picture [93 x 32] intentionally omitted <==** ## **Absolute Maximum Ratings** **==> picture [506 x 262] intentionally omitted <==** **----- Start of picture text -----**<br> Symbol Parameter Value Unit<br>IT(RMS) RMS forward current Tc = 90°C 12 A<br>single half cycle; f = 50Hz;<br>110<br>ITSM Peak non-repetitive surge current single half cycle; f = 60Hz;TJ (initial) = 25°C A<br>120<br>TJ (initial) = 25°C<br>I [2] t I [2] t value for fusing tp = 8.3ms 60 A [2] s<br>di/dt Critical rate-of-rise of on-state current f = 60Hz; TJ =110°C 70 A/µs<br>IGM Peak gate current TJ = 110°C 1.5 A<br>Tstg Storage temperature range -40 to 150 °C<br>TJ Operating junction temperature range -40 to 110 °C<br>Electrical Characteristics (TJ = 25°C, unless otherwise specified) – Alternistor Quadrac<br>Symbol Test Conditions Value Unit<br>IH IT = 20mA (initial) MAX. 8 mA<br>dv/dt VD = VDRM; gate open; TJ=110°C MIN. 45 V/μs<br>dv/dt(c) di/dt(c) = 0.54 x IT(rms) / ms; TJ = 110°C MIN. 2 V/μs<br>tgt (note 1) TYP. 3 μs<br>**----- End of picture text -----**<br> (1) Reference test circuit in figure 7 and waveform in figure 8; CT = 0.1μF with 0.1μs rise time. ## **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 7 and waveform in figure 8. ## **Static Characteristics** **==> picture [506 x 156] 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 = 110°C MAX. 1000 µA<br>Thermal Resistances<br>Symbol Parameter Value Unit<br>R θ (J-C) Junction to case (AC) 2.3 °C/W<br>R θ (J-A) Junction to ambient 50 °C/W<br>**----- End of picture text -----**<br> © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/02/16 **Teccor[®] brand Thyristors** 12 Amp Alternistor Quadrac for LED dimmer applications **==> picture [94 x 32] intentionally omitted <==** **==> picture [244 x 28] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 1: Normalized DC Holding Current<br>vs. Junction Temperature<br>**----- End of picture text -----**<br> **==> picture [244 x 411] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 2: On-State Current vs. On-State Voltage<br>(Typical)<br>45<br>40<br>TJ = 25°C<br>35<br>30<br>25<br>20<br>15<br>10<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>Figure 4: Maximum Allowable Case Temperature<br>vs. RMS On-State Current<br>130<br>CURRENT WAVEFORM: Sinusoidal<br>120 LOAD: Resistive or Inductive<br>CONDUCTION ANGLE: 180°<br>110<br>100<br>90<br>80<br>70<br>0 2 4 6 8 10 12 14<br>RMS On-State Current [IT(RMS)] - AmpsT(RMS)] - Amps] - Amps<br>) – AmpsInstantaneous On-state Current (iT<br>) - °C(TC<br>Maximum Allowable Case Temperature<br>**----- End of picture text -----**<br> **==> picture [245 x 211] intentionally omitted <==** **----- Start of picture text -----**<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: Power Dissipation vs. RMS On-State Current<br>(Typical)<br> = 25°C)(TRatio of I/IJHH<br>**----- End of picture text -----**<br> **==> picture [505 x 396] intentionally omitted <==** **----- Start of picture text -----**<br> 130<br>16 CURRENT WAVEFORM: Sinusoidal<br>120 LOAD: Resistive or Inductive<br>14 CONDUCTION ANGLE: 180°<br>12 110<br>10<br>100<br>8<br>6 90<br>4<br>CURRENT WAVEFORM: Sinusoidal 80<br>2 LOAD: Resistive or Inductive<br>CONDUCTION ANGLE: 360°<br>0 70<br>0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14<br>RMS On-State Current [IT(RMS)] - (Amps) RMS On-State Current [IT(RMS)] - AmpsT(RMS)] - Amps] - Amps<br>Figure 5: Surge Peak On-State Current vs. Number of Cycles<br>1000<br>Supply Frequency: 60Hz Sinusoidal<br>Load: Resistive<br>Value at Specific Case TemperatureRMS On-State Current: [IT(RMS)]: Maximum Rated<br>100 Notes:<br>1. Gate control may be lost during and immediately<br>following surge current interval.<br>2. Overload may not be repeated until junction<br>temperature has returned to steady-state<br>rated value.<br>10<br>1<br>1 10 100 1000<br>Surge Current Duration -- Full Cycles<br>] - (Watts) C<br>(TC) - °C(TC<br>D(AV)<br>[P<br>Average On-State Power Dissipation Maximum Allowable Case Temperature<br>) – Amps<br>TSM<br>Peak Surge (Non-repetitive) On-state Current (I<br>**----- End of picture text -----**<br> © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/02/16 **Teccor[®] brand Thyristors** 12 Amp Alternistor Quadrac for LED dimmer applications **==> picture [93 x 32] intentionally omitted <==** **==> picture [245 x 195] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 6: 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> **==> picture [244 x 19] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 8: Test Circuit Waveform<br>**----- End of picture text -----**<br> **==> 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 420] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 7: 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 9: Peak Output Current vs Triggering Capacitance<br>(Per Figure 7)<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> © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/02/16 **Teccor[®] brand Thyristors** 12 Amp Alternistor Quadrac for LED dimmer applications **==> picture [94 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°C+0/-5| |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 [246 x 458] 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>Environmental Specifications<br>Test Specifications and Conditions<br>MIL-STD-750: Method 1040, Condition A<br>High Temperature<br>Voltage Blocking Rated VDRM (VAC-peak), 110°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>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>Temperature<br>**----- End of picture text -----**<br> © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/02/16 **Teccor[®] brand Thyristors** 12 Amp Alternistor Quadrac for LED dimmer applications **==> picture [93 x 32] intentionally omitted <==** ## **Dimensions — TO-220AB (L-Package) — Isolated Mounting Tab** **==> picture [506 x 587] 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>Product Selector<br>Part Number Type Package<br>Q6012LTH1LED Alternistor Quadrac TO-220L<br>Packing Options<br>Part Number Marking Weight Packing Mode Base Quantity<br> Q6012LTH1LEDTP Q6012LTH1 2.2 g Tube 500 (50 per tube)<br>Part Numbering System Part Marking System<br> TO-220 AB - (L Package)<br>Q 60 12 L T H1 LED<br>DEVICE TYPE LED LIGHTING APPLICATION<br>Q: Quadrac<br>Q6012LTH1<br>VOLTAGE RATING TRIAC TYPE YMXXX<br>60: 600V H1: Low Holding Current<br> Alternistor Quadrac<br>®<br>CURRENT RATING Trigger<br>12: 12A T: Internal Diac (33V – 43V)<br>PACKAGE TYPE<br>L: TO-220 (Isolated)<br>Date Code Marking<br>Y:Year Code<br>M: Month Code<br>XXX: Lot Trace Code<br>**----- End of picture text -----**<br> © 2016 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/02/16
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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