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NTC熱敏電阻系列

電子體溫計(jì)專用熱敏電阻

PTC熱敏電阻系列

線性熱敏電阻系列

PTC自恢復(fù)保險(xiǎn)絲系列

		過(guò)流保護(hù)型 PTC熱敏電阻

1.應(yīng)用范圍：

　華巨電子過(guò)流保護(hù)型PTC熱敏電阻主要用于［變壓器（適配器）／初級(jí)線圈／充電器／數(shù)字萬(wàn)用表／智能電度表／微電機(jī)／晶體管］等的過(guò)流過(guò)熱保護(hù),直接串聯(lián)在負(fù)載電路中,在線路出現(xiàn)異常狀況時(shí),能夠自動(dòng)限制過(guò)電流或阻斷電流,當(dāng)故障排除后又恢復(fù)原態(tài),俗稱“萬(wàn)次保險(xiǎn)絲”。

2.特點(diǎn)：

·無(wú)觸點(diǎn)的電路及元器件保護(hù)　　·自動(dòng)限制過(guò)電流
·故障排除后自動(dòng)恢復(fù)　　　　　·工作時(shí)無(wú)噪音無(wú)火花
·工作可靠、使用方便

3.應(yīng)用原理：
　　將過(guò)流保護(hù)型型PTC熱敏電阻串聯(lián)在電源回路中,當(dāng)電路處于正常狀態(tài)時(shí),流過(guò)PTC的電流小于額定電流,PTC處于常態(tài),阻值很小,不會(huì)影響電子鎮(zhèn)流器（節(jié)能燈、變壓器、萬(wàn)用表）等被保護(hù)電路的正常工作。當(dāng)電路電流大大超過(guò)額定電流時(shí),PTC陡然發(fā)熱,阻值驟增至高阻態(tài),從而限制或阻斷電流,保護(hù)電路不受損壞。電流電流回復(fù)正常后,PTC亦自動(dòng)回復(fù)至低阻態(tài),電路恢復(fù)正常工作。
　過(guò)流保護(hù)型型PTC熱敏電阻在電子鎮(zhèn)流器（節(jié)能燈、變壓器、萬(wàn)用表）等過(guò)流保護(hù)應(yīng)用領(lǐng)域,南京華巨憑借其科研和工藝等方面的優(yōu)勢(shì),率先推出了以高耐壓（V≥300V AC ）為特色的WMZ12型產(chǎn)品。

4.產(chǎn)品標(biāo)志說(shuō)明：

①產(chǎn)品系列：過(guò)流/過(guò)熱保護(hù)系列PTC熱敏電阻
②開關(guān)溫度類別：75-75℃　105-105℃　120-120℃
③芯片直徑：S-Φ3　A-Φ5 B-Φ7 LB-Φ8 M-Φ10 SL-Φ13 LL-Φ19
④標(biāo)稱阻值：82R-82Ω　4R7-4.7Ω 151-150Ω
⑤阻值精度：N-±30％　M-±20％　k-±10％　J-±5％
⑥最大不動(dòng)作電流：060-60mA　300-300mA

使用PTC作為過(guò)流保護(hù)元件,一般應(yīng)選取最大不動(dòng)作電流、最大工作電壓合適的規(guī)格,同時(shí)也應(yīng)考慮元件的外形尺寸、額定零功率電阻、使用溫度范圍等因素。通常取電路正常工作時(shí)的最大工作電流的1.2～1.5倍為PTC最大不動(dòng)作電流；線路在正常或不正常狀態(tài)下可能施加到PTC上的電壓應(yīng)不大于其最大工作電壓。

類型代號(hào)	Dmax	Tmax	F±1	d±0.05
S	4.5	4.5	5	0.5
L	5.5	4.5	5	0.6
A	6.5	4.5	5	0.6
B	8	4.5	5	0.6
LB	9	4.5	5	0.6
M	12	5	5	0.6
SL	15	5	7.5	0.8
LL	24	5	7.5	0.8

5.主要技術(shù)參數(shù)：
主要用于充電器、適配器（初級(jí)線圈）、電能表、數(shù)字萬(wàn)用表等過(guò)流保護(hù)

型號(hào)	MAX Non Operating Current at 25℃ 最大不動(dòng)作電流In (mA)	Trip Current at 25℃動(dòng)作電流It (mA)	額定零功率電阻值R 25 （Ω）	最大工作電流I max (A)	外形尺寸（mm）
型號(hào)	MAX Non Operating Current at 25℃ 最大不動(dòng)作電流In (mA)	Trip Current at 25℃動(dòng)作電流It (mA)	額定零功率電阻值R 25 （Ω）	最大工作電流I max (A)	Dmax	Tmax	d±0.05	F±1
WMZ12A-70LB15RM080	80mA at 40℃±2℃	160	15±30%	1.0	8	5	0.6	5
WMZ12A-70LB12RM090	90mA at 40℃±2℃	180	12±30%
WMZ12A-70LB10RM100	100mA at 40℃±2℃	200	10±30%
WMZ12A-75S222RM005	5	10	2200±30%	0.2	4	4.5	0.5	5
WMZ12A-75S152RM006	6	12	1500±30%
WMZ12A-75S102RM008	8	16	1000±30%
WMZ12A-75S681RM010	10	20	680±30%
WMZ12A-75S471RM012	12	24	470±30%	0.3
WMZ12A-75S331RM015	15	30	330±30%
WMZ12A-75S221RM018	18	36	220±30%
WMZ12A-75S151RM020	20	40	150±30%	0.4
WMZ12A-75S101RM025	25	50	100±30%	0.4
WMZ12A-75A471RM014	14	28	470±30%	0.4	6.5	4.5	0.6	5
WMZ12A-75A331RM017	17	34	330±30%	0.4
WMZ12A-75A221RM020	20	40	220±30%	0.5
WMZ12A-75A151RM024	24	48	150±30%
WMZ12A-75A121RM026	26	52	121 ±30%
WMZ12A-75A101RM028	28	56	100±30%	0.6
WMZ12A-75A68RM032	32	64	68±30%
WMZ12A-75A47RM040	40	80	47±30%
WMZ12A-75B331RM020	20	40	330±30%	0.8	8	4.5	0.6	5
WMZ12A-75B221RM025	25	50	220±30%
WMZ12A-75B151RM030	30	60	150±30%
WMZ12A-75B101RM035	35	70	100±30%	1.0
WMZ12A-75B82RM040	40	80	82±30%	1.0
WMZ12A-75LB82RM035	35mA at 60℃±2℃	90mA at 25℃±2℃	82±30%	1.0	9	4.5	0.6	5
WMZ12A-75LB68RM040	40mA at 60℃±2℃	100mA at 25℃±2℃	68±30%	1.2
WMZ12A-75LB47RM045	45mA at 60℃±2℃	110mA at 25℃±2℃	47±30%
WMZ12A-75LB33RM050	50mA at 60℃±2℃	125mA at 25℃±2℃	33±30%
WMZ12A-75LB22RM060	60mA at 60℃±2℃	150mA at 25℃±2℃	22±30%	1.5
WMZ12A-75LB15RM070	70mA at 60℃±2℃	175mA at 25℃±2℃	15±30%
WMZ12A-75LB10RM080	80mA at 60℃±2℃	200mA at 25℃±2℃	10±30%
WMZ12A-80S681RM005*	5mA at 60℃±2℃	20mA at 25℃±2℃	680±30%	0.2	4.5	5.0	0.6	5
WMZ12A-80S471RM006*	6mA at 60℃±2℃	24mA at 25℃±2℃	470±30%	0.2	4.5	5.0	0.6	5
WMZ12A-80LB50RM060*	45mA at 60℃±2℃	120mA at 25℃±2℃	50±30%	1.2	9	5	0.6	5
WMZ12A-85A102RM0045*	4.5mA at 60℃±2℃	19mA at 25℃±2℃	1000±30%	0.4	6.5	5.0	0.6	5
WMZ12A-85A681RM007*	7mA at 60℃±2℃	30mA at 25℃±2℃	680±30%	0.4
WMZ12A-85A50RM030*	30mA at 60℃±2℃	60mA at 25℃±2℃	50±30%	0.8
WMZ12A-85A70RM025*	25mA at 60℃±2℃	90mA at 25℃±2℃	70±30%	0.8
WMZ12A-85B151RM35	35	70	150±30%	0.8	8	4.5	0.6	5
WMZ12A-85B121RM040	40	80	120±30%	0.8
WMZ12A-85B101RM045	45	90	100±30%	0.9
WMZ12A-85B82RM050	50	100	82±30%	0.9
WMZ12A-85B68RM045*	45mA at 60℃±2℃	90mA at 25℃±2℃	68±30%	1.2
WMZ12A-85B47RM055	55mA at 60℃±2℃	110mA at 25℃±2℃	47±30%
WMZ12A-85B25RM065*	65mA at 60℃±2℃	130mA at 25℃±2℃	25±30%
WMZ12A-85LB68RM060	60	120	68±30%	1.2	9	4.5	0.6	5
WMZ12A-85LB47RM065	65	130	47±30%
WMZ12A-85LB39RM070	70	140	39±30%
WMZ12A-85LB33RM075	75	150	33±30%
WMZ12A-85LB25RM080	80	160	25±30%	1.5
WMZ12A-85LB22RM085	85	170	22±30%
WMZ12A-85LB18RM090	90	180	18±30%
WMZ12A-85LB15RM098	98	196	15±30%
WMZ12A-85LB12RM105	105	210	12±30%
WMZ12A-85LB10RM115	115	230	10±30%
WMZ12A-95LB22RM100	100	200	22±30%
WMZ12A-100B131RM045*	45mA at 60℃±2℃	130mA at 25℃±2℃	130±30%	1.2	8.5	5.0	0.6	5
WMZ12A-100B70RM050*	50mA at 60℃±2℃	145mA at 25℃±2℃	70±30%	1.2
WMZ12A-100B60RM055*	55mA at 60℃±2℃	160mA at 25℃±2℃	60±30%	2.0
WMZ12A-100B50RM060*	60mA at 60℃±2℃	180mA at 25℃±2℃	50±30%
WMZ12A-100B22RM090*	90mA at 60℃±2℃	260mA at 25℃±2℃	22±30%
WMZ12A-105S102RM015	15mA at 60℃±2℃	35mA at 25℃±2℃	1000±30%	0.25	4.5	4.5	0.5	5
WMZ12A-105S221RM020	20mA at 60℃±2℃	50mA at 25℃±2℃	220±30%
WMZ12A-105S151RM025	25mA at 60℃±2℃	65mA at 25℃±2℃	150±30%
WMZ12A-105S101RM030	30mA at 60℃±2℃	75mA at 25℃±2℃	100±30%
WMZ12A-105L221RM025	25mA at 60℃±2℃	65mA at 25℃±2℃	220±30%	0.3	5.5	4.5	0.5	5
WMZ12A-105L151RM030	30mA at 60℃±2℃	75mA at 25℃±2℃	150±30%
WMZ12A-105L121RM35	35mA at 60℃±2℃	88mA at 25℃±2℃	120±30%
WMZ12A-105L101RM40	40mA at 60℃±2℃	100mA at 25℃±2℃	100±30%
WMZ12A-105L75RM45	45mA at 60℃±2℃	100mA at 25℃±2℃	75±30%
WMZ12A-105L68RM50	50mA at 60℃±2℃	125mA at 25℃±2℃	68±30%
WMZ12A-105L47RM55	55mA at 60℃±2℃	138mA at 25℃±2℃	47±30%
WMZ12A-105A151RM035	35mA at 60℃±2℃	88mA at 25℃±2℃	150±30%	0.4	5.5	4.5	0.5	5
WMZ12A-105A101RM45	45mA at 60℃±2℃	115mA at 25℃±2℃	100±30%
WMZ12A-105A68RM50	55mA at 60℃±2℃	138mA at 25℃±2℃	68±30%
WMZ12A-105B151M045	45mA at 60℃±2℃	113mA at 25℃±2℃	150±30%	0.8	8	4.5	0.6	5
WMZ12A-105B121M050	50mA at 60℃±2℃	125mA at 25℃±2℃	120±30%
WMZ12A-105B101M055	55mA at 60℃±2℃	138mA at 25℃±2℃	100±30%
WMZ12A-105B82RM060	60mA at 60℃±2℃	150mA at 25℃±2℃	82±30%	0.9
WMZ12A-105B62RM075	75mA at 60℃±2℃	188mA at 25℃±2℃	62±30%	0.9
WMZ12A-105LB39RM085	85mA at 60℃±2℃	213mA at 25℃±2℃	39±30%	1.2	9	4.5	0.6	5
WMZ12A-105LB22RM100	100mA at 60℃±2℃	250mA at 25℃±2℃	22±30%
WMZ12A-105LB15RM110	110mA at 60℃±2℃	275mA at 25℃±2℃	15±30%
WMZ12A-105LB10RM120	120mA at 60℃±2℃	300mA at 25℃±2℃	22±30%
WMZ12A-105M22RM120	120mA at 60℃±2℃	300mA at 25℃±2℃	22±20%	1.6	12	4.5	0.6	5
WMZ12A-105M15RM130	130mA at 60℃±2℃	325mA at 25℃±2℃	15±20%
WMZ12A-105M10RM140	140mA at 60℃±2℃	350mA at 25℃±2℃	10±20%
WMZ12A-105M8R2M150	150mA at 60℃±2℃	375mA at 25℃±2℃	8.2±20%
WMZ12A-105SL18RM150	150mA at 60℃±2℃	375mA at 25℃±2℃	18±20%	2.5	15	5	0.8	7.5
WMZ12A-105SL15RM160	160mA at 60℃±2℃	400mA at 25℃±2℃	15±20%
WMZ12A-105SL12RM170	170mA at 60℃±2℃	425mA at 25℃±2℃	12±20%
WMZ12A-105SL10RM180	180mA at 60℃±2℃	450mA at 25℃±2℃	10±20%
WMZ12A-105SL8R2M190	190mA at 60℃±2℃	480mA at 25℃±2℃	8.2±20%
WMZ12A-105SL6R8M200	200mA at 60℃±2℃	500mA at 25℃±2℃	6.8±20%
WMZ12A-120L101RM040	40mA at 60℃±2℃	80mA at 25℃±2℃	100±30%	0.3	5.5	4.5	0.6	5
WMZ12A-120L75RM045	45mA at 60℃±2℃	90mA at 25℃±2℃	75±30%
WMZ12A-120L62RM050	50mA at 60℃±2℃	100mA at 25℃±2℃	62±30%
WMZ12A-120A102RM015	15mA at 60℃±2℃	40mA at 25℃±2℃	1000±30%	0.4	6.5	5	0.6	5
WMZ12A-120A301RM020	20mA at 60℃±2℃	50mA at 25℃±2℃	300±30%
WMZ12A-120A151RM040	40mA at 60℃±2℃	80mA at 60℃±2℃	151±30%
WMZ12A-120A101RM050	50mA at 60℃±2℃	100mA at 60℃±2℃	100±30%
WMZ12A-120A68RM060	60mA at 60℃±2℃	120mA at 25℃±2℃	68±20%
WMZ12A-120A47RM065	65mA at 60℃±2℃	130mA at 25℃±2℃	47±20%
WMZ12A-120B251RM030	30mA at 60℃±2℃	75mA at 25℃±2℃	250±20%	0.9	8	5	0.6	5
WMZ12A-120B121RM045	45mA at 60℃±2℃	110mA at 25℃±2℃	121±20%
WMZ12A-120B101RM050	50mA at 60℃±2℃	125mA at 25℃±2℃	100±20%
WMZ12A-120B68RM070	70mA at 60℃±2℃	180mA at 25℃±2℃	68±20%
WMZ12A-120LB25RM110	110mA at 60℃±2℃	270mA at 25℃±2℃	25±20%	1.2	9	5	0.6	5
WMZ12A-120LB39RM100	100mA at 60℃±2℃	240mA at 25℃±2℃	39±20%	1.2	9	5	0.6	5
WMZ12A-120M181RM040	40mA at 60℃±2℃	80mA at 25℃±2℃	180±20%	1.6	12	5	0.6	5
WMZ12A-120M101RM060	60mA at 60℃±2℃	120mA at 25℃±2℃	100±20%
WMZ12A-120M82RM065	65mA at 60℃±2℃	130mA at 25℃±2℃	82±20%
WMZ12A-120M60RM070	70mA at 60℃±2℃	140mA at 25℃±2℃	60±20%
WMZ12A-120M55RM080	80mA at 60℃±2℃	160mA at 25℃±2℃	55±20%
WMZ12A-120M47RM090	90mA at 60℃±2℃	180mA at 25℃±2℃	47±20%
WMZ12A-120M39RM100	100mA at 60℃±2℃	200mA at 25℃±2℃	39±20%
WMZ12A-120M33RM110	110mA at 60℃±2℃	220mA at 25℃±2℃	33±20%
WMZ12A-120M22RM130	130mA at 60℃±2℃	260mA at 25℃±2℃	22±20%
WMZ12A-120M15RM150	145mA at 60℃±2℃	290mA at 25℃±2℃	15±20%
WMZ12A-120M10RM170	160mA at 60℃±2℃	320mA at 25℃±2℃	10±20%
WMZ12A-120M8R2M170	170mA at 60℃±2℃	340mA at 25℃±2℃	8.2±20%
WMZ12A-120SL45RM120	120mA at 60℃±2℃	300mA at 25℃±2℃	45±20%	2.5	15	5	0.6	5
WMZ12A-120SL22RM180	180mA at 60℃±2℃	360mA at 25℃±2℃	22±20%
WMZ12A-120SL15RM200	200mA at 60℃±2℃	400mA at 25℃±2℃	15±20%
WMZ12A-120SL12RM210	210mA at 60℃±2℃	420mA at 25℃±2℃	12±20%
WMZ12A-120SL10RM220	220mA at 60℃±2℃	440mA at 25℃±2℃	10±20%
WMZ12A-120SL8R2M240	240mA at 60℃±2℃	480mA at 25℃±2℃	8.2±20%
WMZ12A-120SL6R8M260	260mA at 60℃±2℃	520mA at 25℃±2℃	6.8±20%
WMZ12A-120GL6R0M300	300mA at 60℃±2℃	780mA at 25℃±2℃	6.0±20%	3.1	17.5	5	0.6	5
WMZ12A-120GL7R0M280	280mA at 60℃±2℃	700mA at 25℃±2℃	7.0±20%	3.1	17.5	5	0.6	5
WMZ12A-120LL12RM300	300	600	12±20%	3.5	24	5	0.8	7.5
WMZ12A-120LL10RM330	330	660	10±20%	3.5
WMZ12A-120LL8R2M360	360	720	8.2±20%	4.0
WMZ12A-120LL6R8M400	400	800	6.8±20%	4.0
WMZ12A-120LL4R7M450	450	900	4.7±20%	4.5
WMZ12A-120LL3R3M500	500	1000	3.3±20%	4.5
WMZ12A-120LL2R2M550	550	1100	2.2±20%	5.0
WMZ12A-120LL1R5M600	600	1200	1.5±20%	5.0

·用于485，232等接口電路保護(hù)

自動(dòng)抄表技術(shù)在電表應(yīng)用中越來(lái)越流行，該技術(shù)為電表提供通信端口遠(yuǎn)程讀取數(shù)據(jù)，RS-485是一種簡(jiǎn)單、廉價(jià)而且可靠的通信規(guī)范,而PTC熱敏電阻能為RS-485電表線路可提供過(guò)壓,過(guò)流保護(hù),譬如RS-485總線與電力線(例如，220/380V)短路時(shí). WMZ12A-85A50RMU,WMZ12A-85BHV68RMU是設(shè)計(jì)專門對(duì)RS-485電表線路進(jìn)行過(guò)流,過(guò)載保護(hù)的一種PTC.當(dāng)線路處于正常狀態(tài)時(shí), PTC處于常態(tài),阻值很小,不會(huì)影響被保護(hù)電路的正常工作.當(dāng)電路出現(xiàn)故障,電流增大, PTC呈現(xiàn)高阻態(tài),使電路處于相對(duì)”斷開”狀態(tài),從而保護(hù)RS-485接口不受損壞,當(dāng)故障排除后, PTC亦自動(dòng)回復(fù)到低阻態(tài).

序號(hào)	型號(hào)	額定零功率電阻	最大不動(dòng)作電流 at 25℃	動(dòng)作電流 at 25℃	最大電流 Imax	最大電壓 Vmax	外形尺寸(mm)
序號(hào)	型號(hào)	R25(Ω)	Int（mA）	It(mA)	(A)	(Vac)	Dmax	Tmax	F±1	dmax
1	WMZ12A-85A50RMU	50±30%	30	60	0.8	265	6.5	5.0	5.0	0.6
2	WMZ12A-85B68RMU	68±30%	45	90	1.2	420	8.5	7.0	5.0	0.6