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Surge protection 31J Metal Oxide Varistor 90pF For Energy Saving Lamp

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Dongguan Ampfort Electronics Co., Ltd.

City: dongguan

Province/State:guangdong

Country/Region:china

Tel:86--18128566098

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Surge protection 31J Metal Oxide Varistor 90pF For Energy Saving Lamp

Brand Name	HEL
Model Number	7D471K
Certification	CQC,UL,CSA,VDE
Place of Origin	Guangdong,CN
Minimum Order Quantity	5000PCS
Price	0.016 USD/PC
Payment Terms	T/T, Western Union, MoneyGram
Supply Ability	100,000,000PCS Per Month
Delivery Time	7 Working Days
Packaging Details	Bulk or tape
Name	Metal Oxide Varistor
Application	Surge protection
Series	K
Varistor Voltage	470V
Tmax	5.7
V1mA	470V（423～517）
VAC	300V
VDC	385V
V10A	775V
Imax (8/20μs)	1200A
In(15times) (8/20μs)	500A
Rated power	0.25W
Energy(10/1000μs)	31J
Capacitance 1kHz	90pF

Detailed Product Description

HEL K Type Metal Oxide Varistor 7D471K 7mm 470V 1200A 31J 90pF For Energy Saving Lamp

Features Of The Metal Oxide Varistor 7D471K

◆ Small size, large flow capacity and energy tolerance

◆ Epoxy resin insulation encapsulation

◆ Response time: <25ns

◆ Ambient temperature: -40℃～+85℃

◆ Insulation resistance: ≥500MΩ

◆ Varistor voltage temperature coefficient: -0.5%/℃

◆ Chip diameter: 5, 7, 10, 14, 20, 25, 32, 40mm

◆ The allowable deviation of the varistor voltage is: K±10%

Function Of The Metal Oxide Varistor 7D471K

①Overvoltage protection of transistors, ICs, thyristors and semiconductor switching elements and various electronic and electrical equipment
②Surge absorption and overvoltage protection of household appliances
③Industrial electrical surge absorption
④Electrostatic discharge and noise signal cancellation
⑤Surge absorption of relays and solenoid valves
⑥Overvoltage protection of leakage switch
⑦Lightning protection and overvoltage protection of telephone program-controlled switches and communication equipment

Dimension Of The Metal Oxide Varistor 7D471K (mm)

Series	Varistor Voltage	Tmax
7D	18V ~ 39V	3.9
	47V ~ 68V	4.4
	82V ~ 150V	3.9
	180V ~ 270V	4.3
	330V ~ 390V	4.9
	430V ~ 560V	5.7
	620V ~ 780V	6.5
	820V	6.8

Note: If the foot type is non-linear such as outward bending, usually Hmax=14mm

Electrical Parameters Of The Metal Oxide Varistor 7D471K

P/N	V1mA	AC	DC	V10A	Imax	In(15times)	(W)	(10/1000μs)(J)	1kHz
	(V)	(V)	(V)	(V)	(8/20μs)	(8/20μs)			(PF)
	(V)	(V)	(V)	(V)	(A)	(A)			(PF)
HEL 7D180K	18(16～20)	11	14	·38	250	—	0.02	1.3	3500
HEL 7D220K	22(20～24)	14	18	·43	250	—	0.02	1.7	2800
HEL 7D270K	27(24～30)	17	22	·53	250	—	0.02	2	2200
HEL 7D330K	33(30～36)	20	26	·65	250	—	0.02	2.4	1800
HEL 7D390K	39(35～43)	25	31	·77	250	—	0.02	2.8	1450
HEL 7D470K	47(42～52)	30	38	·93	250	—	0.02	3.5	1150
HEL 7D560K	56(50～62)	35	45	·110	250	—	0.02	4.1	1050
HEL 7D680K	68(61～75)	40	56	·135	250	—	0.02	5	970
HEL 7D820K	82(74～90)	50	65	135	1200	500	0.25	6	930
HEL 7D101K	100(90～110)	60	85	165	1200	500	0.25	7.4	860
HEL 7D121K	120(108～132)	75	100	200	1200	500	0.25	8	670
HEL 7D151K	150(135～165)	95	125	250	1200	500	0.25	10	490
HEL 7D181K	180(162～198)	115	150	300	1200	500	0.25	12	330
HEL 7D201K	200(180～220)	130	170	340	1200	500	0.25	14	240
HEL 7D221K	220(198～242)	140	180	360	1200	500	0.25	15	190
HEL 7D241K	240(216～264)	150	200	395	1200	500	0.25	16	165
HEL 7D271K	270(243～297)	175	225	455	1200	500	0.25	19	150
HEL 7D301K	300(270～330)	195	250	505	1200	500	0.25	22.1	135
HEL 7D331K	330(297～363)	210	275	550	1200	500	0.25	24.2	130
HEL 7D361K	360(324～396)	230	300	595	1200	500	0.25	26	125
HEL 7D391K	390(351～429)	250	320	650	1200	500	0.25	26	105
HEL 7D431K	430(387～473)	275	350	710	1200	500	0.25	29	100
HEL 7D471K	470(423～517)	300	385	775	1200	500	0.25	31	90
HEL 7D511K	510(459～561)	320	418	842	1200	500	0.25	34	80
HEL 7D561K	560(504～616)	350	460	920	1200	500	0.25	34	75
HEL 7D621K	620(558～682)	385	505	1025	1200	500	0.25	36	70
HEL 7D681K	680(612～748)	420	560	1120	1200	500	0.25	36	65
HEL 7D751K	750(675～825)	460	615	1240	1200	500	0.25	39	61
HEL 7D781K	780(702～858)	485	640	1290	1200	500	0.25	41	54
HEL 7D821K	820(738～902)	510	670	1355	1200	500	0.25	43	48

Inrush current impulse level Of The Metal Oxide Varistor 7D471K

Product Level		K Coventional Version		KJ Enhanced Version		KH Super Enhanced Version		KX Custom made Version
Part No.	V1mA(V)	Withstanding Surge Current (Imax) (A)	Impulse Current 15 times 8/20μs (A)	Withstanding Surge Current (Imax) (A)	Impulse Current 15 times 8/20μs (A)	Withstanding Surge Current (Imax) (A)	Impulse Voltage 40 times (1.2/50μs) (V)	Super High Energy
5D	82～750	400	150	800	250	800	1000	Example 1 14D instead of 20D Example 2 HEL14D561KX reach 6KV/3KA 100 times
7D	82～820	1200	500	1750	1000	1750	2000
10D	82～1800	2500	1500	3500	1500	3500	4000
14D	82～1800	4500	3000	6000	3000	6000	6000
20D	82～1800	6500	3000	10000	5000	10000	10000
5D	18～68	100	-	250	150	-	-
7D	18～68	250	-	500	250	-	-
10D	18～68	500	-	1000	500	-	-
14D	18～68	1000	-	2000	1000	-	-
20	18～68	2000	-	3000	1000	-	-
In accordance with International and National Standards		IEC61051-1 GB/T10193 IEC61051-2 GB/T10194 IEC61051-2-2 GB/T10195 CSA-C22.2 UL1449		Include the left column, and add the following: IEC60950-1:2005/Annex Q GB4943.1-2011 GB8898-2011 UL1449		Include the left column, and add the following: IEC61000-4-5 GB/T17626.5 IEC61643-331 GB/T18802.331

Remark: the Impluse voltage testing standards(1.2/50μs) with 40 times are only applicable to the products

which with the varistor voltage more than 430V.

Safety certification and corresponding models Of The Metal Oxide Varistor 7D471K

Voltage	5D	7D	10D	14D	20D
180	UL	UL	UL	UL	UL
220
270
330
390
470
560
680
820	CQC UL VDE CSA	CQC UL VDE CSA	CQC UL VDE CSA	CQC UL VDE CSA	CQC UL VDE CSA
101
121
151
181
201	CQC UL VDE CSA	CQC UL VDE CSA	CQC UL VDE CSA Q2	CQC UL VDE CSA Q2	CQC UL VDE CSA Q2
221
241
271
301
331
361
391
431	CQC UL VDE CSA	CQC UL VDE CSA	CQC UL VDE CSA Q1 Q2	CQC UL VDE CSA Q1 Q2	CQC UL VDE CSA Q1 Q2
471
511	CQC UL VDE
561	VDE
621	VDE
751	/	CQC UL VDE
781
821
911	/	/
951
102
112
152	/	/	CQC VDE CSA Q1 Q2	CQC VDE CSA Q1 Q2	CQC VDE CSA Q1 Q2
182	/	/	VDE CSA Q2	VDE CSA Q2	VDE CSA Q1 Q2

Remark:
CQC (GB/T10193, GB/T10194).
UL1449(VZCA2/UL,VZCA8/C-UL), 105℃, 125℃, 130℃.
VDE (IEC61051-1, -2, -2-2).
CSA (C22.2 No.269.5-17).
Q1 = CQC (GB4943.1, GB8898).
Q2 = VDE (IEC60950-1 Annex.Q).
The above certification specifications may be changed, if necessary, please ask the quality control

department for the latest version.

Derating curve graph and volt-ampere characteristic graph

Maximum surge current imax = f(tr,pulse train)

v/i characteristics

A=Leakage current, B = Protection level for worst-case varistor tolerances

Why choose us - AMPFORT

Product Tags: 31J Metal Oxide Varistor 90pF Metal Oxide Varisto Lamp Surge Protection Varistor

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