Image not available
Illustrative purposes only
2N6348AG
Triac, 600 V, 12 A, TO-220AB, 2.5 V, 100 A, 40 mA
⚠️ 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, Vdrm:600V; On State RMS Current IT(rms):12A; Triac Case Style:TO-220AB; Gate Trigger Current Max (QI), Igt:75mA; Gate Trigger Voltage Max Vgt:2.5V; Peak Gate
- MSL: MSL 1 - Unlimited
- SVHC: No SVHC (15-Jan-2018)
- No. of Pins: 3Pins
- Product Range: -
- Triac Case Style: TO-220AB
- Thyristor Mounting: Through Hole
- Holding Current Max: 40mA
- On State RMS Current: 12A
- Gate Trigger Voltage Max: 2.5V
- Operating Temperature Max: 125°C
- Peak Non Repetitive Surge Current: 100A
- Peak Repetitive Off State Voltage: 600V
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 0.731 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
Thyristors **Datasheet** **2N6344A, 2N6348A, 2N6349A** Surface Mount – 600-800V **==> picture [10 x 6] intentionally omitted <==** **----- Start of picture text -----**<br> Pb<br>**----- End of picture text -----**<br> ## **Description** The 2N634xA is designed primarily for full-wave AC control applications, such as light dimmers, motor controls, heating controls and power supplies; or wherever full-wave silicon gate controlled solid-state devices are needed. Triac type thyristors switch from a blocking to a conducting state for either polarity of applied anode voltage with positive or negative gate triggering. ## **Features** ## **Additional Information** **==> picture [198 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> Resources Accessories Samples<br>**----- End of picture text -----**<br> - Gate Triggering Guaranteed in all Four Quadrants - Blocking Voltage to 800 V - All Diffused and Glass Passivated Junctions for ■ For 400 Hz Operation, Greater Parameter Uniformity Consult Factory and Stability - 8.0 A Devices Available as - ■ Small, Rugged, Thermowatt 2N6344 thru 2N6349 Construction for Low Thermal ■ Pb−Free Package is Available Resistance, High Heat Dissipation and Durability - Pb−Free Package is Available ## **Functional Diagram** ## **Pin Out** **CASE 221A STYLE 4** e 1 2 i T0-220AB © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 02/11/21 **1** Thyristors **Datasheet** **2N6344A, 2N6348A, 2N6349A** Surface Mount – 600-800V ## **Maximum Ratings and Thermal Characteristics (TJ = 25°C unless otherwise noted)** |**Rating**<br>*Peak Repetitive Off-State Voltage (Note 1)<br>(TJ= -40 to 110°C, Sine Wave, 50 to 60 Hz, Gate Open)<br>2N6344A,<br>2N6348A<br>2N6349A|**Rating**<br>*Peak Repetitive Off-State Voltage (Note 1)<br>(TJ= -40 to 110°C, Sine Wave, 50 to 60 Hz, Gate Open)<br>2N6344A,<br>2N6348A<br>2N6349A|**Symbol**<br>VDRM,<br>VRRM|**Value**<br>600|**Unit**<br>V| |---|---|---|---|---| ||2N6349A||800|| |*On-State RMS Current<br>(Full Cycle Sine Wave 50 to 60 Hz)|(TC=+80°C)|IT (RMS)|12|A| ||(TC=+90°C)||6.0|| |*Peak Non−Repetitive Surge Current<br>(One Full Cycle, Sine Wave 60 Hz, TC= +80°C)<br>Preceded and followed by rated current||ITSM|100|A| |Circuit Fusing Considerations (t = 8.3 ms)||I2t|59|A²s| |*Peak Gate Power (TC= +80°C, Pulse Width = 2 µs)||PGM|20|W| |*Average Gate Power (TC= +80°C, t = 8.3 ms)||PG(AV)|0.5|W| |*Peak Gate Current (TC= +80°C, Pulse Width = 2.0 µs)||IGM|2.0|A| |*Peak Gate Voltage (TC= +80°C, Pulse Width = 2.0 µs)||VGM|±10|V| |*Operating Junction Temperature Range||TJ|-40 to +125|°C| |*Storage Temperature Range||Tstg|-40 to +150|°C| Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. * Indicates JEDEC Registered Data. 1. VDRM and VRRM for all types can be applied on a continuous basis. Blocking voltages shall not be tested with a constant current source such that the voltage ratings of the devices are exceeded. ## **Thermal Characteristics** |**Rating**<br>† Thermal Resistance, Junction to Case|**Symbol**<br>R8JC|**Value**<br>2.0|**Unit**<br>°C/W| |---|---|---|---| |Maximum Lead Temperature for Soldering Purposes, 1/8” from case for 10 seconds|TL|260|°C| † Indicates JEDEC Registered Data. ## **Electrical Characteristics - OFF (TC = 25°C unless otherwise noted; Electricals apply in both directions)** |**Characteristic**<br>*Peak Repetitive Blocking Current<br>(VD= VDRM= VRRM; Gate Open)<br>TJ= 25°C<br>TJ= 100°C|**Symbol**<br>IDRM,<br>IRRM|**Min**<br>-|**Typ**<br>-|**Max**<br>10|**Unit**<br>µA| |---|---|---|---|---|---| |||-|-|2.0|mA| © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 02/11/21 **2** Thyristors **Datasheet** **2N6344A, 2N6348A, 2N6349A** Surface Mount – 600-800V ## **Electrical Characteristics - ON (TC = 25°C unless otherwise noted; Electricals apply in both directions)** **==> picture [484 x 313] intentionally omitted <==** **----- Start of picture text -----**<br> |||||||| |---|---|---|---|---|---|---| |Characteristic|Symbol|Min|Typ|Max|Unit| |†Peak On−State Voltage(ITM = ±17 A Peak; Pulse Width = 1 to 2 ms, Duty Cycle ≤ 2%)|VTM|-|1.3|175|V| |Gate Trigger Current (Continuous dc) (VD = 12 Vdc, RL = 100 Q)| |Quadrant I: MT2(+), G(+)|All|-|6.0|50| |Quadrant II: MT2(+), G(−)|2N6348A & 2N6349A|-|6.0|75| |Quadrant III: MT2(−), G(−)|All|-|10|50| |Quadrant IV: MT2(−), G(+)|2N6348A & 2N6349A|IGT|-|25|75|mA| |†MT2(+), G(+); MT2(−), G(−)|TC = −40°C|-|−|100| |†MT2(+), G(−); MT2(−), G(+)|TC = −40°C|-|−|125| |Gate Trigger Voltage (Continuous dc) (VD = 12 Vdc, RL = 100 Q)| |Quadrant I: MT2(+), G(+)|Both|−|0.9|2.0| |Quadrant II: MT2(+), G(−)|2N6348A & 2N6349A|−|0.9|2.5| |Quadrant III: MT2(−), G(−)|Both|−|1.1|2.0| |Quadrant IV: MT2(−), G(+)|2N6348A & 2N6349A|VGT|−|1.4|2.5| |†MT2(+), G(+); MT2(−), G(−)|TC = −40°C|−|−|2.5|V| |†MT2(+), G(−); MT2(−), G(+)|TC = −40°C|−|−|3.0| |Gate Non−Trigger Voltage (Continuous dc)| |(VD = Rated VDRM, RL = 10 k Q, TJ = 100°C)|VGD|.02|-|-| |†MT2(+), G(+); MT2(−), G(−); MT2(+), G(−); MT2(−), G(−)| |Holding Current|TC = 25°C|-|6.0|40| |(VD = 12 Vdc, Gate Open)|IH|mA| |Initiating Current = 200 mA|TC = -40°C|-|-|75| |Rise Time = 0.1 †Turn-On Time (Vµs, Pulse Width = 2 D = Rated VDRM, ITM = 11 A, Iµs)|GT = 120 mA,|tgt|-|10|15|µs| **----- End of picture text -----**<br> † Indicates JEDEC Registered Data. ## **Dynamic Characteristics** **==> picture [484 x 32] intentionally omitted <==** **----- Start of picture text -----**<br> ||||||| |---|---|---|---|---|---| |Characteristic|Symbol|Min|Typ|Max|Unit| |Critical Rate of Rise of Commutation Voltag (VD = Rated VDRM, ITM = 17 A,|dv/dt(c)|−|5.0|−|V/µs| |Commutating di/dt = 6.1 A/ms, Gate Unenergized, TC = 80°C)| **----- End of picture text -----**<br> ## **Voltage Current Characteristic of SCR** **==> picture [451 x 96] intentionally omitted <==** **----- Start of picture text -----**<br> |||||| |---|---|---|---|---| |+Current| |Symbol|Parameter| |VDRM|Peak Repetitive Forward Off State Voltage|VTM|Quadrant 1Main Terminal 2+| |VIDRMRRM|Peak Repetitive Reverse Off State VoltagePeak Forward Blocking Current|IRRM at VRRM|On State|IH| |IRRM|Peak Reverse Blocking Current|Off State|+Voltage| |VTM|Maximum On State Voltage|IH|IDRM at VDRM| |IH|Holding Current|Quadrant 3Main Terminal 2-|VTM| **----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 02/11/21 **3** Thyristors **Datasheet** **2N6344A, 2N6348A, 2N6349A** Surface Mount – 600-800V ## **Ratings and Characteristic Curves** **Figure 1. RMS Current Derating** **Figure 2. On−State Power Dissipation** **==> picture [466 x 361] intentionally omitted <==** **----- Start of picture text -----**<br> 110 20<br>~~ 30° TT LLL dc<br>60° 16 α<br>100 P C LLL LAW]<br>SSS 90° FA α R<br>120°<br>12<br>180° α = CONDUCTION ANGLE<br>90 SPP SS iSAD areTeaee<br>> α TT)NSASSO 8 8.0 aOL TJ = 110°C IN NS 180°<br>120°<br>A , Ba eT<br>α 90°<br>80 J SSS COL Ae 60<br>α = CONDUCTION ANGLE || NXNSS 4.0 GE α = 30° A °<br>Pt TAINS DBE TELL<br>dc<br>70 SERN 0 -> zene<br>0 0.20 .40 .60 .80 12 14 1 0 2.04 .0 6.08 .0 10 12 14<br>IT(RMS), RMS ON-STATE CURRENT, (AMP) IT(RMS), RMS ON-STATE CURRENT (AMP)<br>Figure 3. Typical Gate Trigger Voltage Figure 4. Typical Gate Trigger Current<br>8.1 50<br>VD = 12 V VD = 12 V<br>1.6<br>aSE E 30 ++)Pt tt ty fy |<br>1.4 a a ee ee a<br>1.2 Stei QUADRANT 4 fe 20 eeePt tte t_ELE TL<br>1.0<br>1<br>0.8 1 10 2<br>QUADRANT<br>QUADRANTS 2 3<br>0.6 7.0 4<br>| | 3 pf || a se ee<br>0.4 a 5.0 a ee ee<br>- 60 - 40 - 20 0 20 40 60 80 100 120 140 - 6 0 _ 4 0 _ 2 0 00 20 40 60 80 1 0 102 14<br>TJ, JUNCTION TEMPER ATURE (°C) TJ, JUNCTION TEMPERATURE (°C)<br>°<br>T , CASE TEMPERATURE ( C)C P , AVERAGE POWER (WATTS)AV<br>gt I , GATE TRIGGER CURRENT (mA)GT<br>V , GATE TRIGGER VOLTAGE (VOLTS)<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 02/11/21 **4** Thyristors **Datasheet** **2N6344A, 2N6348A, 2N6349A** Surface Mount – 600-800V **Figure 7. Maximum On-State Characteristics** **Figure 8. Typical Holding Current** **==> picture [467 x 568] intentionally omitted <==** **----- Start of picture text -----**<br> 20<br>100 GATE OPEN<br>ee PRE T<br>MAIN TERMINAL #1<br>70<br>SSSSSSSe== EE p POSITIVE y<br>10<br>50<br>ro | P RN<br>7.0<br>30<br>pitta 5.0 —————<br>20 PLP iALT ttTy t yt ASAP_ MAIN TERMINAL #2 SSS<br>POSITIVE<br>3.0<br>10 Se TJ = 100°C 25°C e aco,a eeERSee eee<br>Sey S ee 2.0 ee ee<br>7.0 6 0 2 0 00 2 40 60 8 0 10 120 140<br>| -<br>5.0 |SIFT| VF | ft f[ fF Jf fT ff TJ, JUNCTION TEMPERATURE (°C)<br>3.0 | | ff | | | ft | tt<br>Pty} Figure 9. Maximum Allowable Surge Current<br>2.0 ET ET tT<br>100<br>1.0 PEE —<br>0.7 SS 80 PSS<br>0.5<br>Aa 60 ARR(\ ([\CS<br>0.3 | fy | | | ht | | LJ Pit<br>40 CYCLE<br>0.2 Pipe; | Ft Et ep FE| ETT<br>TJ = 100°C<br>ptf | | i} ft Tf tt 20 f = 60 Hz PtSeett tT tes<br>0.1 Surge is preceded and followed by rated current<br>4.08 .0 2.1 6.1 0.2 4.2 8.2 2.3 6.3 0.4 4.4 0<br>vTM, INSTANTANEOUS ON-STATE VOLTAGE (VOLTS) 1.0 2.03 .0 5.07 .0 10<br>Mo |) [ee]<br>NUMBER OF CYCLES<br>Figure 10. Typical Thermal Response<br>1.0<br>0.5<br>0.2 a<br>Z JC(t) [ = r(t) ][•][ R] JC<br>0.1<br>aa eel<br>0.05<br>0.02 fT LT TTT ETTTT<br>0.01 a | |<br>0.1 0.2 5.00 .10 .2 5.0 20 5 0 1 0 20 500 1.0 k 2.0 k 5.0 k 10 k<br>t,TIME (ms)<br>I , HOLDING CURRENT (mA)H<br>i , INSTANTANEOUS ON-STATE CURRENT (AMP)TM<br>, PEAK SURGE CURRENT (AMP)<br>ITSM<br>r(t), TRANSIENT THERMAL RESISTANCE(NORMALIZED)<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 02/11/21 **5** Thyristors **Datasheet** **2N6344A, 2N6348A, 2N6349A** Surface Mount – 600-800V ## **Dimensions** ## **Part Marking System** **==> picture [438 x 147] intentionally omitted <==** **----- Start of picture text -----**<br> B F C<br>T<br>S<br>4<br>4<br>Q A<br>12 3 U TO-220AB<br>Case 221A YMAXX<br>H K Style 3 2N634xAG AKA<br>Z<br>1<br>L R 2 3<br>V Fl J FF 2N634xAY =Device Code=Year &<br>G M =Month<br>D A =Assembly Site<br>AKA =Diode Polarity<br>N E G =Pb-Free Package<br>**----- End of picture text -----**<br> |**Dim**<br>**A**|**Inches**|**Inches**|**Millimeters**|**Millimeters**| |---|---|---|---|---| ||**Min**<br>0.590|**Max**<br>0.620|**Min**<br>14.99|**Max**<br>15.75| |**B**|0.380|0.420|9.65|10.67| |**C**|0.178|0.188|4.52|4.78| |**D**|0.025|0.035|0.64|0.89| |**F**|0.142|0.147|3.61|3.73| |**G**|0.095|0.105|2.41|2.67| |**H**|0.110|0.130|2.79|3.30| |**J**|0.018|0.024|0.46|0.61| |**K**|0.540|0.575|13.72|14.61| |**L**|0.060|0.075|1.52|1.91| |**N**|0.195|0.205|4.95|5.21| |**Q**|0.105|0.115|2.67|2.92| |**R**|0.085|0.095|2.16|2.41| |**S**|0.045|0.060|1.14|1.52| |**T**|0.235|0.255|5.97|6.47| |**U**|0.000|0.050|0.00|1.27| |**V**|0.045|---|1.15|---| |**Z**|---|0.080|---|2.04| ||**Pin Assignment**| |---|---| |1|Cathode| |2|Anode| |3|Gate| |4|Anode| ## **Ordering Information** |**Device**<br>2N6344A|**Package**<br>TO-220AB|**Shipping†**<br>1000 Units / Box| |---|---|---| |2N6344AG|TO-220AB<br>(Pb-Free)|| |2N6348A|TO-220AB|| |2N6348AG|TO-220AB<br>(Pb-Free)|| |2N6349A|TO-220AB|| |2N6349AG|TO-220AB<br>(Pb-Free)|| 1. Dimensioning and tolerancing per ansi y14.5m, 1982. 2. Controlling dimension: inch. 3. Dimension z defines a zone where all body and lead irregularities are allowed. **Disclaimer Notice** - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics. © 2021 Littelfuse, Inc. **6** Specifications are subject to change without notice. Wélittelfuse ~~=~~ Revised: GD. 02/11/21
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.
About Novapart
Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.
Learn more →Stock Shortage Specialist
When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.
Request a quote →Compliant Alternatives
We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.
BOM Analysis service →