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QJ4004D3RP
Triac, 400 V, 4 A, TO-252AA, 1.3 V, 40 A, 20 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:
- SVHC: To Be Advised
- No. of Pins: 3Pins
- Product Range: QJxx04xx
- Triac Case Style: TO-252AA
- Thyristor Mounting: Surface Mount
- Holding Current Max: 20mA
- On State RMS Current: 4A
- Peak On State Voltage: 1.4V
- Gate Trigger Voltage Max: 1.3V
- Operating Temperature Max: 150°C
- Peak Non Repetitive Surge Current: 40A
- Peak Repetitive Off State Voltage: 400V
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 0.764 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs ~~HF~~ ~~**RoHS**~~ ## ~~LJxx04xx & QJxx04xx Series~~ ## **Description** This 4 A High Temperature Triac solid state switch series is designed for AC switching and phase control applications such as motor speed and temperature modulation controls, lighting controls, and static switching relays. **Sensitive** type components guarantee gate control in Quadrants I & IV needed for digital control circuitry. **Standard** type components normally operate in Quadrants I & III triggered from AC line. ## **Features & Benefits** **==> picture [244 x 87] intentionally omitted <==** **----- Start of picture text -----**<br> Main Features<br>Lo<br>Symbol Value Unit<br>I 4 A<br>T(RMS)<br>VDRM/VRRM 400 or 600 V<br>IGT (Q1) 10 to 25 mA<br>**----- End of picture text -----**<br> - 150°C maximum junction from reaction of switching temperature events - Voltage capability up to • Restricted (or limited) RFI 600V generation, depending on activation point of - • Surge capability up to sine wave - 48A at 60HZ half cycle - Requires only a short gate activation pulse in each half-cycle - Solid-state switching activation pulse in each - eliminates arcing or half-cycle - contact bounce that create voltage transients • Halogen free and RoHS compliant - No contacts to wear out **==> picture [488 x 99] intentionally omitted <==** **----- Start of picture text -----**<br> Schematic Symbol Applications<br>ee,<br>Typical applications are AC solid-state switches, power<br>tools, home/brown goods and white goods appliances.<br>MT2 MT1<br>Sensitive gate Triacs can be directly driven by<br>microprocessor or popular opto-couplers/isolators.<br>Internally constructed isolated packages are offered for<br>G<br>ease of heat sinking with highest isolation voltage.<br>**----- End of picture text -----**<br> |**Absolute Maximum Ratings — Sensitive Triacs(4 Quadrants)**<br>~~|~~|**Absolute Maximum Ratings — Sensitive Triacs(4 Quadrants)**<br>~~|~~|**Absolute Maximum Ratings — Sensitive Triacs(4 Quadrants)**<br>~~|~~|**Absolute Maximum Ratings — Sensitive Triacs(4 Quadrants)**<br>~~|~~|**Absolute Maximum Ratings — Sensitive Triacs(4 Quadrants)**<br>~~|~~| |---|---|---|---|---| |**Symbol**<br>**Parameter**|||**Value**|**Unit**| |VDSM/VRSM<br>Peak non-repetitive blocking voltage|PW=100 μs||700|V| |IT(RMS)<br>RMS on-state current<br>(full sine wave)|LJxx04Vy/LJxx04Dy|TC= 135 °C|4|A| |ITSM<br>Non repetitive surge peak on-state current<br>(full cycle, TJinitial = 25°C)|f = 50 Hz<br>f = 60 Hz|t = 20 ms<br>t = 16.7 ms|40<br>48|A| |I2t<br>I2t Value for fusing|tp= 8.3 ms||9.5|A2s| |di/dt<br>Critical rate of rise of on-state current<br>(IG= 50mA with ≤ 0.1μs rise time)|f = 60 Hz|TJ= 150 °C|50|A/μs| |IGTM<br>Peak gate trigger current|tp=20μs|TJ= 150 °C|4|A| |PG(AV)<br>Average gate power dissipation||TJ= 150 °C|0.3|W| |Tstg<br>Storage temperature range|||-40 to 150|°C| |TJ<br>Operating junction temperature range|||-40 to 150|°C| Note: xx=voltage/10, y = sensitivity ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs ## **Absolute Maximum Ratings — Standard Triacs** **==> picture [507 x 592] intentionally omitted <==** **----- Start of picture text -----**<br> Symbol Parameter Value Unit<br>VDSM/VRSM Peak non-repetitive blocking voltage PW=100 μs 700 V<br>RMS on-state current<br>IT(RMS) (full sine wave) QJxx04Vy/QJxx04Dy TC = 135 °C 4 A<br>f = 50 Hz t = 20 ms 40<br>ITSM Non repetitive surge peak on-state current (full cycle, TJ initial = 25°C) f = 60 Hz t = 16.7 ms 48 A<br>I [2] t I [2] t Value for fusing tp = 8.3 ms 9.5 A [2] s<br>Critical rate of rise of on-state current<br>di/dt (IG = 50mA with ≤ 0.1μs rise time) f = 60 Hz TJ = 150 °C 50 A/μs<br>IGTM Peak gate trigger current tp=20μs TJ = 150 °C 4 A<br>PG(AV) Average gate power dissipation TJ = 150 °C 0.3 W<br>Tstg Storage temperature range -40 to 150 °C<br>TJ Operating junction temperature range -40 to 150 °C<br>Note: xx=voltage/10, y = sensitivity<br>Electrical Characteristics (TJ = 25°C, unless otherwise specified) — Sensitive Triac (4 Quadrants)<br>Symbol Test Conditions Quadrant LJxx04x8 Unit<br>I – II – III 10<br>IGT VD = 12V RL = 60 Ω IV MAX. 20 mA<br>VGT VD = 12V RL = 60 Ω ALL MAX. 1.3 V<br>VGD VD = VDRM RL = 3.3 kΩ TJ = 150°C ALL MIN. 0.2 V<br>IH IT = 100mA MAX. 20 mA<br>400V 75<br>dv/dt VD = VDRM Gate Open TJ = 150°C 600V TYP. 45 V/μs<br>(dv/dt)c (di/dt)c = 2.16 A/ms TJ = 150°C TYP. 1 V/μs<br>tgt IG = 2 x IGT PW = 15μs IT = 5.6 A(pk) TYP. 10 μs<br>Note: xx=voltage/10, x = package<br>Electrical Characteristics (TJ = 25°C, unless otherwise specified) — Standard Triac<br>Symbol Test Conditions Quadrant QJxx04x3 QJxx04x4 Unit<br>I – II – III MAX. 10 25<br>IGT VD = 12V RL = 60 Ω IV TYP. 25 50 mA<br>VGT VD = 12V RL = 60 Ω I – II – III MAX. 1.3 1.3 V<br>VGD VD = VDRM RL = 3.3 kΩ TJ = 150°C ALL MIN. 0.2 0.2 V<br>IH IT = 200mA MAX. 20 30 mA<br>400V 75 150<br>dv/dt VD = VDRM Gate Open TJ = 150°C 600V MIN. 45 100 V/μs<br>(dv/dt)c (di/dt)c = 2.16 A/ms TJ = 150°C TYP. 2 2 V/μs<br>tgt IG = 2 x IGT PW = 15μs IT = 5.6 A(pk) TYP. 10 15 μs<br>**----- End of picture text -----**<br> Note: xx=voltage/10, x = package ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs |**Static Characteristics (TJ = 25°C, unless otherwise specifed)**|**Static Characteristics (TJ = 25°C, unless otherwise specifed)**|**Static Characteristics (TJ = 25°C, unless otherwise specifed)**|**Static Characteristics (TJ = 25°C, unless otherwise specifed)**|||| |---|---|---|---|---|---|---| |**Symbol**||**Test Conditions**|||**Value**|**Unit**| |VTM|ITM= 5.6A tp= 380 µs||MAX.||1.40|V| |||||TJ= 25°C|5|μA| ||||LJxx04xy|TJ= 125°C|0.5|mA| |IDRM<br>IRRM|VDRM= VRRM|MAX.||TJ= 150°C<br>TJ= 25°C|3<br>5|μA| ||||QJxx04xy|TJ= 125°C|0.5|| |||||||mA| |||||TJ= 150°C|3|| Note: xx=voltage/10, x = package, y = sensitivity |**Thermal Resistances**|**Thermal Resistances**|||| |---|---|---|---|---| |**Symbol**|**Parameter**||**Value**|**Unit**| |RƟ(JC)|Junction to case (AC)|LJ/QJxx04Dy<br>LJ/QJxx04Vy|1.5<br>1.5|°C/W| |RƟ(J-A)|Junction to ambient|LJ/QJxx04Vy<br>LJ/QJxx04Dy|70|°C/W| Note: xx=voltage/10, y = sensitivity **==> picture [244 x 28] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 1: Definition of Quadrants<br>**----- End of picture text -----**<br> **==> picture [244 x 177] intentionally omitted <==** **----- Start of picture text -----**<br> ALL POLARITIES ARE REFERENCED TO MT1<br>MT2 POSITIVE<br>MT2 (Positive Half Cycle)+ MT2<br>(-) I G T (+) I G T<br>GATE GATE<br>MT1 MT1<br>REF REF<br>I G T - QIIIQII QIQIV + I G T<br>MT2 MT2<br>(-) I G T (+) I G T<br>GATE GATE<br>MT1 MT1<br>-<br>REF MT2 NEGATIVE REF<br>(Negative Half Cycle)<br>**----- End of picture text -----**<br> **==> picture [244 x 210] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 2: Normalized DC Gate Trigger Current for<br>All Quadrants vs. Junction Temperature<br>1.8<br>1.6<br>1.4<br>1.2<br>1.0<br>0.8<br>0.6<br>0.4<br>0.2<br>0<br>-40 -15 10 35 60 85 110 135 150<br>Junction Temperature (TJ)- ºC<br>IGT = 25°C)(TJ<br>IGT<br>Ratio of<br>**----- End of picture text -----**<br> ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs **==> picture [244 x 27] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 3: Normalized DC Holding Current<br>vs. Junction Temperature<br>**----- End of picture text -----**<br> **==> picture [244 x 177] intentionally omitted <==** **----- Start of picture text -----**<br> 2.0<br>1.8<br>1.6<br>1.4<br>1.2<br>1.0<br>0.8<br>0.6<br>0.4<br>0.2<br>0<br>-40 -15 10 35 60 85 110 135 150<br>Junction Temperature (TJ)- ºC<br>IH = 25°C)(TJ<br>IH<br>Ratio of<br>**----- End of picture text -----**<br> **==> picture [244 x 239] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 5: Power Dissipation (Typical)<br>vs. RMS On-State Current<br>4.0<br>CURRENT WAVE FORM: Sinusoidal<br>3.5 LOAD: Resistive or Inductive<br>CONDUCTION ANGLE: 360°<br>3.0<br>2.5<br>2.0<br>1.5<br>1.0<br>0.5<br>0<br>0 1 2 3 4<br>RMS On-State Current (IT(RMS)) - Amps<br>Figure 7: On-State Current vs. On-State Voltage<br>(Typical)<br>) - Watts<br>D(AV)<br>Average On-State<br>Power Dissipation (P<br>**----- End of picture text -----**<br> **==> picture [244 x 435] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 4: Normalized DC Gate Trigger Voltage for<br>All Quadrants vs. Junction Temperature<br>1.8<br>1.6<br>1.4<br>1.2<br>1.0<br>0.8<br>0.6<br>0.4<br>0.2<br>0<br>-40 -15 10 35 60 85 110 135 150<br>Junction Temperature (TJ)- ºC<br>Figure 6: Maximum Allowable Case Temperature<br>vs. On-State Current<br>160<br>150<br>140<br>130<br>120<br>110<br>100<br>CURRENT WAVE FORM: Sinusoidal<br>LOAD: Resistive or Inductive<br>CONDUCTION ANGLE: 360°<br>90 CASE TEMPERATURE: Measured as shown<br>on Dimensional Drawing<br>80<br>0 1 2 3 4 5<br>RMS On-State Current (IT(RMS)) - Amps<br>VGT = 25°C)J<br>(T<br>GT<br>V<br>Ratio of<br>) - °CC<br>Maximum Allowable<br>Case Temperature (T<br>**----- End of picture text -----**<br> **==> picture [245 x 177] intentionally omitted <==** **----- Start of picture text -----**<br> 20<br>18<br>16<br>14<br>12<br>10<br>8<br>6<br>4<br>2<br>0<br>0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0<br>Positive or Instantaneous<br>On-State Voltage (VT) - Volts<br>) - AmpsT<br>Positive or Instantaneous On-State Current (I<br>**----- End of picture text -----**<br> ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs ## **Figure 8: Surge Peak On-State Current vs. Number of Cycles** **==> picture [504 x 174] intentionally omitted <==** **----- Start of picture text -----**<br> 100<br>Supply Frequency: 60Hz Sinusoidal<br>Load: Resistive<br>Specific Case TemperatureRMS On-State [IT(RMS)]: Max Rated Value at<br>10 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>1<br>1 10 100 1000<br>Surge Current Duration – Full Cycles<br>) – Amps<br>TSM<br>(I<br>Peak Surge (Non-repetitive) On-State Current<br>**----- End of picture text -----**<br> ## **Soldering Parameters** |Refow Condition|Refow Condition|Pb – Free assembly| |---|---|---| ||- Temperature Min (Ts(min))|150°C| |Pre Heat<br>- Temperature Max (Ts(max))<br>- Time (min to max) (ts)<br>Average ramp up rate (Liquidus Temp)<br>(TL) to peak<br>TS(max)to TL- Ramp-up Rate<br>Refow<br>- Temperature (TL) (Liquidus)<br>- Time (tL)||200°C<br>60 – 180 secs<br>5°C/second max<br>5°C/second max<br>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 Specifications** |**Terminal Finish**<br>**Body Material**<br>**Terminal Material**|100% Matte Tin-plated<br>UL Recognized compound meeting<br>fammability rating V-0<br>Copper Alloy| |---|---| ## **Design Considerations** Careful selection of the correct component 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 component 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 377] 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, M-1040, Cond A Applied<br>AC Blocking (VDRM) Peak AC voltage @ 150°C for 1008 hours<br>MIL-STD-750, M-1051,<br>Temperature Cycling 100 cycles; -55°C to +150°C; 15-min<br>dwell-time<br>EIA / JEDEC, JESD22-A101<br>Temperature/<br>1008 hours; 160V - DC: 85°C; 85%<br>Humidity<br>rel humidity<br>MIL-STD-750, M-1031,<br>High Temp Storage<br>1008 hours; 150°C<br>Low-Temp Storage 1008 hours; -40°C<br>Resistance to<br>MIL-STD-750 Method 2031<br>Solder Heat<br>Solderability ANSI/J-STD-002, category 3, Test A<br>Lead Bend MIL-STD-750, M-2036 Cond E<br>Temperature<br>**----- End of picture text -----**<br> ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs ## **Dimensions — TO-251AA (V-Package) — V-PAK Through Hole** **==> picture [195 x 200] intentionally omitted <==** **----- Start of picture text -----**<br> TC MEASURING POINT AREA: 0.040 IN [2]<br>MT2 E H 5.28<br>D J .208<br>A<br>5.34<br>.210<br>B<br>P R S<br>Q<br>K<br>C<br>MT1 F L<br>MT2 G<br>GATE<br>I<br>**----- End of picture text -----**<br> **==> picture [248 x 257] intentionally omitted <==** **----- Start of picture text -----**<br> Inches Millimeters<br>Dimension<br>Min Typ Max Min Typ Max<br>A 0.037 0.040 0.043 0.94 1.01 1.09<br>B 0.235 0.242 0.245 5.97 6.15 6.22<br>C 0.350 0.361 0.375 8.89 9.18 9.53<br>D 0.205 0.208 0.213 5.21 5.29 5.41<br>E 0.255 0.262 0.265 6.48 6.66 6.73<br>F 0.027 0.031 0.033 0.69 0.80 0.84<br>G 0.087 0.090 0.093 2.21 2.28 2.36<br>H 0.085 0.092 0.095 2.16 2.34 2.41<br>I 0.176 0.180 0.184 4.47 4.57 4.67<br>J 0.018 0.020 0.023 0.46 0.51 0.58<br>K 0.035 0.037 0.039 0.90 0.95 1.00<br>L 0.018 0.020 0.023 0.46 0.52 0.58<br>P 0.042 0.047 0.052 1.06 1.20 1.32<br>Q 0.034 0.039 0.044 0.86 1.00 1.11<br>R 0.034 0.039 0.044 0.86 1.00 1.11<br>S 0.074 0.079 0.084 1.86 2.00 2.11<br>**----- End of picture text -----**<br> ## **Dimensions — TO-252AA (D-Package) — D-PAK Surface Mount** **==> picture [229 x 162] intentionally omitted <==** **----- Start of picture text -----**<br> MT2 DE TC MEASURING POINT .2085.28 6.71.264<br>A<br>5.34 6.71<br>.210 .264<br>B<br>1.60<br>P .063<br>C Q<br>1.80<br>GATE .071<br>MT1 F AREA: 0.040 IN [2]<br>MT2 G MT2 .1183 4.60.181<br>I<br>O L<br>K J H<br>M<br>N<br>**----- End of picture text -----**<br> **==> picture [246 x 271] intentionally omitted <==** **----- Start of picture text -----**<br> Inches Millimeters<br>Dimension<br>Min Typ Max Min Typ Max<br>A 0.037 0.040 0.043 0.94 1.01 1.09<br>B 0.235 0.243 0.245 5.97 6.16 6.22<br>C 0.106 0.108 0.113 2.69 2.74 2.87<br>D 0.205 0.208 0.213 5.21 5.29 5.41<br>E 0.255 0.262 0.265 6.48 6.65 6.73<br>F 0.027 0.031 0.033 0.69 0.80 0.84<br>G 0.087 0.090 0.093 2.21 2.28 2.36<br>H 0.085 0.092 0.095 2.16 2.33 2.41<br>I 0.176 0.179 0.184 4.47 4.55 4.67<br>J 0.018 0.020 0.023 0.46 0.51 0.58<br>K 0.035 0.037 0.039 0.90 0.95 1.00<br>L 0.018 0.020 0.023 0.46 0.51 0.58<br>M 0.000 0.000 0.004 0.00 0.00 0.10<br>N 0.021 0.026 0.027 0.53 0.67 0.69<br>O 0° 0° 5° 0° 0° 5°<br>P 0.042 0.047 0.052 1.06 1.20 1.32<br>Q 0.034 0.039 0.044 0.86 1.00 1.11<br>**----- End of picture text -----**<br> ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs ## **Product Selector** **==> picture [506 x 133] intentionally omitted <==** **----- Start of picture text -----**<br> Voltage Gate Sensitivity Quadrants<br>Part Number Type Package<br>400V 600V I – II – III IV<br>LJxx04D8 x x 10mA 20mA Sensitive Triac TO-252 D-PAK<br>LJxx04V8 x x 10mA 20mA Sensitive Triac TO-251 V-PAK<br>QJxx04D3 x x 10mA 25mA Standard Triac TO-252 D-PAK<br>QJxx04V3 x x 10mA 25mA Standard Triac TO-251 V-PAK<br>QJxx04D4 x x 25mA 50mA Standard Triac TO-252 D-PAK<br>QJxx04V4 x x 25mA 50mA Standard Triac TO-251 V-PAK<br>**----- End of picture text -----**<br> Note: xx=voltage/10 ## **Packing Options** **==> picture [506 x 163] intentionally omitted <==** **----- Start of picture text -----**<br> Part Number Marking Weight Packing Mode Base Quantity<br>LJxx04D8TP LJxx04D8 0.3g Tube Pack 750(75 per tube)<br>LJxx04D8RP LJxx04D8 0.3g Embossed Carrier 2500<br>LJxx04V8TP LJxx04V8 0.4g Tube Pack 750(75 per tube)<br>QJxx04D3TP QJxx04D3 0.3g Tube Pack 750(75 per tube)<br>QJxx04D3RP QJxx04D3 0.3g Embossed Carrier 2500<br>QJxx04V3TP QJxx04V3 0.4g Tube Pack 750(75 per tube)<br>QJxx04D4TP QJxx04D4 0.3g Tube Pack 750(75 per tube)<br>QJxx04D4RP QJxx04D4 0.3g Embossed Carrier 2500<br>QJxx04V4TP QJxx04V4 0.4g Tube Pack 750(75 per tube)<br>**----- End of picture text -----**<br> Note: xx=voltage/10 **Part Numbering System** **QJ 60 04 V 8 COMPONENT TYPE SENSITIVITY & TYPE LJ :** HT Sensitive Triac **Sensitive Triac: QJ :** HT Triac or Alternistor **8 :** 10 mA (QI, II, III) 20 mA (QIV) **VOLTAGE RATING Standard Triac: 40 :** 400V **3:** 10mA(QI,QII,QIII) **60 :** 600V **4:** 25mA(QI,QII,QIII) **CURRENT PACKAGE TYPE 04:** 4A **V :** TO-251 (VPAK) **D :** TO-252 (DPAK) **==> picture [243 x 177] intentionally omitted <==** **----- Start of picture text -----**<br> Part Marking System<br>LJ6004V8<br>YMLDD ®<br>Date Code Marking<br> Y:Year Code<br> M: Month Code<br> L: Location Code<br> DD: Calendar Code<br>**----- End of picture text -----**<br> ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18 **Thyristors** 4 Amp High Temperature Sensitive & Standard Triacs **TO-252 Embossed Carrier Reel Pack (RP) Specifications** **Meets all EIA-481-2 Standards** **==> picture [264 x 240] intentionally omitted <==** **----- Start of picture text -----**<br> 0.157<br>(4.0)<br>0.059 DIA<br>(1.5)<br>Gate MT1<br>(16.0)0.63 (13.3)0.524 *<br>* Cover tape 0.315 MT2<br>(8.0)<br>12.99<br>0.512 (13.0) Arbor (330.0) Dimensions<br>Hole Dia.<br>are in inches<br>(and millimeters).<br>0.64<br>(16.3)<br>Direction of Feed<br> XXXXXX XX DC XXXXXX XX DC XXXXXX XX DC XXXXXX<br>**----- End of picture text -----**<br> **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. ©2018 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 11/29/18
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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