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Series: QxxxxLTx
Teccor® 4/6/8/10/15Amp QUADRAC® Devices
Teccor brand Quadrac devices are triacs that include a diac trigger mounted inside the same package. This device, developed by Littelfuse, saves the user the expense and assembly time of buying a discrete diac and assembling in conjunction with a gated triac. Also, the alternistor Quadrac device (QxxxxLTH) eliminates the need for a snubber network.

The Quadrac device is a bidirectional AC switch and is gate controlled for either polarity of main terminal voltage. Its primary purpose is for AC switching and phase control applications such as speed controls, temperature modulation controls, and lighting controls where noise immunity is required.

Triac current capacities range from 4A to 15A with voltage ranges from 200V to 600V. Quadrac devices are available in the TO-220 package.

The TO-220 package is electrically isolated to 2500V rms from the leads to mounting surface. 4000V rms is available on special order. This means that no external isolation is required, thus eliminating the need for separate insulators and insulator-mounting steps and saving dollars over "hot tab" devices. All Teccor triac and diac chips have glass-passivated junctions to ensure long-term device reliability and parameter stability.

Variations of devices in this data sheet are available for custom design applications. Consult the factory for more information.


Electrical Characteristics

Access specifications, certifications, check availability and order parts below:

Check distributor stock availability by clicking on the [CHECK] link. View certification PDF files by clicking on the certification logo. View the part details by clicking on the part number. To order sample parts, click on the [ADD] link. Click on the 'Key' button to view definitions for each column header. Sort parts by clicking on the column you wish to sort by.


CatalogNo Certs. Size IT(RMS) (A) VBOMIN (V) VBOMAX (V) VDRM
(V) 		IDRM@
VDRM
25°C
(mA) 		IDRM@
VDRM
125°C
(mA) 		VTM
(V) 		ITSM 60Hz
(A) 		dv/dt @
125°C
(V/μs) 		di/dt @
110°C
(A/μs) 		Stock Sample
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Q2004LT
Obsolete: 2011-07-01
Replaced By Q4004LT 		TO-220 Isolated Tab 4 33 43 200 0.01 2 1.6 55 50 50 [Check] n/a
Q2006LT
Obsolete: 2011-07-01
Replaced By Q4006LT 		TO-220 Isolated Tab 6 33 43 200 0.01 2 1.6 80 100 70 [Check] n/a
Q2006LTH
Obsolete: 2011-07-01 		TO-220 Isolated Tab 6 33 43 200 0.01 2 1.6 80 100 70 [Check] n/a
Q2008LT
Obsolete: 2011-07-01
Replaced By Q4008LT 		TO-220 Isolated Tab 8 33 43 200 0.01 2 1.6 100 120 70 [Check] n/a
Q2008LTH
Obsolete: 2011-07-01 		TO-220 Isolated Tab 8 33 43 200 0.01 2 1.6 100 120 70 [Check] n/a
Q2010LT
Obsolete: 2011-07-01
Replaced By Q4010LT 		TO-220 Isolated Tab 10 33 43 200 0.05 2 1.6 120 150 70 [Check] n/a
Q2015LT
Obsolete: 2011-07-01
Replaced By Q4015LT 		TO-220 Isolated Tab 15 33 43 200 0.05 2 1.6 200 200 100 [Check] n/a
Q2015LTH
Obsolete: 2011-07-01 		TO-220 Isolated Tab 15 33 43 200 0.01 2 1.6 200 200 100 [Check] n/a
Q4004LT TO-220 Isolated Tab 4 33 43 400 0.05 2 1.6 55 50 50 [Check] [Add]
Q4006LT TO-220 Isolated Tab 6 33 43 400 0.05 2 1.6 80 100 70 [Check] [Add]
Q4006LTH TO-220 Isolated Tab 6 33 43 400 0.05 2 1.6 80 450 70 [Check] [Add]
Q4008LT TO-220 Isolated Tab 8 33 43 400 0.05 2 1.6 100 120 70 [Check] [Add]
Q4008LTH TO-220 Isolated Tab 8 33 43 400 0.05 2 1.6 100 450 70 [Check] [Add]
Q4010LT TO-220 Isolated Tab 10 33 43 400 0.01 2 1.6 120 150 70 [Check] [Add]
Q4010LTH TO-220 Isolated Tab 10 33 43 400 0.01 2 1.6 120 700 70 [Check] [Add]
Q4015LT TO-220 Isolated Tab 15 33 43 400 0.01 2 1.6 200 200 100 [Check] [Add]
Q4015LTH TO-220 Isolated Tab 15 33 43 400 0.01 2 1.6 200 700 100 [Check] [Add]
Q6004LT TO-220 Isolated Tab 4 33 43 600 0.05 2 1.6 55 50 50 [Check] [Add]
Q6006LT TO-220 Isolated Tab 6 33 43 600 0.05 2 1.6 80 85 70 [Check] [Add]
Q6006LTH TO-220 Isolated Tab 6 33 43 600 0.05 2 1.6 80 350 70 [Check] [Add]
Q6008LT TO-220 Isolated Tab 8 33 43 600 0.05 2 1.6 100 100 70 [Check] [Add]
Q6008LTH TO-220 Isolated Tab 8 33 43 600 0.05 2 1.6 100 350 70 [Check] [Add]
Q6010LT TO-220 Isolated Tab 10 33 43 600 0.05 2 1.6 120 120 70 [Check] [Add]
Q6010LTH TO-220 Isolated Tab 10 33 43 600 0.05 2 1.6 120 600 70 [Check] [Add]
Q6015LT TO-220 Isolated Tab 15 33 43 600 0.05 2 1.6 200 150 100 [Check] [Add]
Q6015LTH TO-220 Isolated Tab 15 33 43 600 0.01 2 1.6 200 600 100 [Check] [Add]