X Class - Littelfuse

X-Class Series - 600V - 1000V Ultra Junction Power MOSFETs with HiPerFET™ Options

Littelfuse Discrete MOSFETs X-Class Image

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Ultra-Junction X-Class Power MOSFETs with fast body diodes are rugged devices that display the lowest on-state resistances in the industry, enabling very high power density in high-voltage power conversion applications. Developed using the charge compensation principle and proprietary process technology, these devices exhibit low gate charges and superior dv/dt performance. In addition, thanks to the fast soft-recovery body diode, these Ultra-Junction MOSFETs help reduce switching losses and electromagnetic interference (EMI).

Features:

Ultra low on-resistance R_DS(ON) and gate charge Q_g
Fast body diode
dv/dt ruggedness
Avalanche rated
Low package inductance
International standard packages

Advantages:

Higher efficiency
High power density
Easy to mount
Space savings

Applications:

Industrial switched-mode and resonant-mode power supplies
Electric vehicle battery chargers
AC and DC motor drives
DC-DC converters
Renewable-energy inverters
Power Factor Correction (PFC) circuits
Robotics and servo control

Access specifications, certifications, check availability and order parts below

Catalog #	V_DSS (V)	R_DS(ON),max @ 25 ℃ (Ohm)	I_{D, cont} @ 25 ℃ (A)	Gate Charge (nC)	R_thJC (K/W)	Configuration	Package Type	C_ISS (pF)	t_rr,typ (ns)	P_D (W)	T_J Max (°C)	C_RSS (pF)	V_ISOL,RMS (V)	Stock	Samples

IXFA14N85XHV	850	0.55	14	30	0.27	Single	TO-263HV	1043	116	460				Check	Order
IXFA18N60X	600	0.23	18	35	0.39	Single	TO-263	1440	127	320
IXFA20N85XHV	850	0.33	20	63	0.23	Single	TO-263HV	1660	190	540				Check	Order
IXFA24N60X	600	0.175	24	47	0.31	Single	TO-263	1910	140	400
IXFA30N60X	600	0.155	30	56	0.25	Single	TO-263	2270	145	500
IXFA4N85X	850	2.5	3.5	7	0.83	Single	TO-263	247	170	150				Check	Order
IXFA8N85XHV	850	0.85	8	17	0.63	Single	TO-263HV	654	125	200				Check	Order
IXFB70N100X	1000	0.089	70	350	0.07	Single	TO-264 PLUS	9160		1785				Check
IXFB90N85X	850	0.041	90	340	0.07	Single	TO-264 PLUS	13300	250	1785				Check	Order
IXFH14N85X	850	0.55	14	30	0.27	Single	TO-247	1043	116	460				Check	Order
IXFH18N60X	600	0.23	18	35	0.39	Single	TO-247	1440	127	320
IXFH20N85X	850	0.33	20	63	0.23	Single	TO-247	1660	190	540				Check	Order
IXFH24N60X	600	0.175	24	47	0.31	Single	TO-247	1910	140	400
IXFH26N100X	1000	0.32	26	113	0.145	Single	TO-247	3290		860				Check	Order
IXFH30N60X	600	0.155	30	56	0.25	Single	TO-247	2270	145	500
IXFH30N85X	850	0.23	30	68	0.18	Single	TO-247	2460	160	695				Check	Order
IXFH32N100X	1000	0.22	32	130	0.14	Single	TO-247	4075		890				Check	Order
IXFH40N85X	850	0.145	40	98	0.145	Single	TO-247	3700	200	860				Check	Order
IXFH50N60X	600	0.073	50	116	0.19	Single	TO-247	4660	195	660				Check
IXFH50N85X	850	0.105	50	152	0.14	Single	TO-247	4480	218	890				Check	Order
IXFH60N60X	600	0.055	60	143	0.14	Single	TO-247	5800	200	890				Check
IXFJ20N85X	850	0.36	9.5	63	1.13	Single	TO-247ISO	1660	190	110				Check	Order
IXFK32N100X	1000	0.22	32	130	0.14	Single	TO-264K	4075		890				Check	Order
IXFK50N85X	850	0.105	50	152	0.14	Single	TO-264K	4480	218	890				Check	Order
IXFK52N100X	1000	0.125	52	245	0.1	Single	TO-264K	6725		1250				Check	Order
IXFK66N85X	850	0.065	66	230	0.1	Single	TO-264K	8900	250	1250				Check	Order
IXFN110N85X	850	0.033	110	425	0.107	Single	SOT-227	17000	205	1170				Check	Order
IXFN52N100X	1000	0.125	44	245	0.15	Single	SOT-227	6725		830				Check
IXFN66N85X	850	0.065	65	230	0.15	Single	SOT-227	8900	250	830				Check	Order
IXFN70N100X	1000	0.089	65	350	0.104	Single	SOT-227	9150		1200				Check	Order
IXFN74N100X	1000	0.066	74	425	0.107	Single	SOT-227	17000	290	1170	150	48	2500	Check
IXFN90N85X	850	0.041	90	340	0.104	Single	SOT-227	13300	250	1200				Check	Order
IXFP14N85X	850	0.55	14	30	0.27	Single	TO-220	1043	116	460				Check	Order
IXFP14N85XM	850	0.55	14	30	3.3	Single	TO-220FP	1043	116	38				Check	Order
IXFP18N60X	600	0.23	18	35	0.39	Single	TO-220	1440	127	320
IXFP20N85X	850	0.33	20	63	0.23	Single	TO-220	1660	190	540				Check	Order
IXFP24N60X	600	0.175	24	47	0.31	Single	TO-220	1910	140	400
IXFP30N60X	600	0.155	30	56	0.25	Single	TO-220	2270	145	500
IXFP4N85X	850	2.5	3.5	7	0.83	Single	TO-220	247	170	150				Check	Order
IXFP4N85XM	850	2.5	3.5	7	3.57	Single	TO-220FP	247	170	35				Check	Order
IXFP8N85X	850	0.85	8	17	0.63	Single	TO-220	654	125	200				Check	Order
IXFP8N85XM	850	0.85	8	17	3.78	Single	TO-220FP	654	125	33				Check
IXFQ24N60X	600	0.175	24	47	0.31	Single	TO-3P	1910	140	400				Check
IXFQ30N60X	600	0.155	30	56	0.25	Single	TO-3P	2270	145	500
IXFQ50N60X	600	0.073	50	116	0.19	Single	TO-3P	4660	195	660
IXFQ60N60X	600	0.055	60	143	0.14	Single	TO-3P	5800	200	890				Check
IXFQ8N85X	850	0.85	8	17	0.63	Single	TO-3P	654	125	200				Check
IXFT26N100XHV	1000	0.32	26	113	0.145	Single	TO-268S	3290		860				Check	Order
IXFT30N85XHV	850	0.23	30	68	0.18	Single	TO-268HV	2460	160	695				Check	Order
IXFT32N100XHV	1000	0.22	32	130	0.14	Single	TO-268HV	4075		890				Check	Order
IXFT40N85XHV	850	0.145	40	98	0.145	Single	TO-268HV	3700	200	860				Check	Order
IXFT50N60X	600	0.073	50	116	0.19	Single	TO-268S	4660	195	660
IXFT50N85XHV	850	0.105	50	152	0.14	Single	TO-268HV	4480	218	890				Check	Order
IXFX52N100X	1000	0.125	52	245	0.1	Single	TO-247 PLUS	6725		1250				Check
IXFX66N85X	850	0.065	66	230	0.1	Single	TO-247 PLUS	8900	250	1250				Check	Order
IXFX90N60X	600	0.038	90	210	0.113	Single	TO-247 PLUS	8500	210	1100
IXFY4N85X	850	2.5	3.5	7	0.83	Single	TO-252	247	170	150				Check	Order
IXTA20N65X	650	0.21	20	35	0.39	Single	TO-263	1390	350	320				Check
IXTH20N65X	650	0.21	20	35	0.39	Single	TO-247	1390	350	320
IXTH32N65X	650	0.135	32	54	0.25	Single	TO-247	2205	400	500				Check
IXTH52N65X	650	0.068	52	113	0.19	Single	TO-247	4350	435	660				Check
IXTH64N65X	650	0.051	64	143	0.14	Single	TO-247	5500	450	890				Check
IXTP20N65X	650	0.21	20	35	0.39	Single	TO-220	1390	350	320
IXTP20N65XM	650	0.21	20	35	2	Single	TO-220FP	1390	350	63
IXTP32N65X	650	0.135	32	54	0.25	Single	TO-220	2205	400	500
IXTP32N65XM	650	0.135	32	54	1.6	Single	TO-220FP	2205	400	78
IXTQ32N65X	650	0.135	32	54	0.25	Single	TO-3P	2205	400	500
IXFK90N60X Obsolete: 2024 -10-09	600	0.038	90	210	0.113	Single	TO-264K	8500	210	1100

To request product environmental information, please complete the Product Environmental Information Request Form.

	Forward-Biased, Reverse-Biased, and Short-Circuit Safe Operating Area of MOSFETs and IGBTs
	Littelfuse Discrete Power MOSFET Datasheet Explanation Application Note

Catalog #	Certificates

IXFJ20N85X
IXFN110N85X
IXFN52N100X
IXFN66N85X
IXFN70N100X
IXFN90N85X
IXFP14N85XM
IXFP4N85XM
IXFP8N85XM
IXTP20N65XM
IXTP32N65XM

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