适用于RS485接口电路保护的pptc

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由于RS485通讯传输线通常暴露于户外，日常生活中雷电和静电干扰已经成为RS485通信总线在实际工程经常遇到的问题，RS485收发器的工作电压较低，只有5V，元器件本身的耐压也较低，通常只有－7

Model 型号	Ih	It	Vmaxi	Imax	Rmin	Rmax	Product Dimensions (mm) 最大产品尺寸
Model 型号	A	A	V	A	Ω	Ω	Style	A	B	C	D	Lead
WH250-030	0.03	0.06	250	1	35	90	F4	6.0	8.0	5.1	4.6	0.5
WH250-040	0.04	0.08	250	1	27	66	F4	6.0	8.0	5.1	4.6	0.5
WH250-050	0.05	0.10	250	1	20	45	F4	6.0	8.0	5.1	4.6	0.5
WH250-060	0.06	0.12	250	3	20	45	F4	6.5	9.0	5.1	4.6	0.6
WH250-080	0.08	0.16	250	3	10	22	F4	6.5	9.0	5.1	4.6	0.5
WH250-090	0.09	0.18	250	3	5.0	20	F4	6.5	9.0	5.1	4.6	0.5
WH250-110	0.11	0.22	250	3	6.0	12	F3	7.0	9.5	5.1	4.6	0.6
WH250-120	0.12	0.24	250	3	6.5	10.5	F3	7.0	9.5	5.1	4.6	0.6
WH250-145	0.145	0.29	250	3	3.5	6.5	F3	7.0	9.5	5.1	4.6	0.6
WH250-180	0.18	0.36	250	10	1.35	3.0	F4	10.5	13.5	5.1	4.6	0.6
WH250-200	0.20	0.40	250	10	3.0	6.0	F4	10.5	13.5	5.1	4.6	0.6
WH250-400	0.40	0.80	250	10	1.35	3.0	F3	11.2	14.2	5.1	4.6	0.8
WH250-600	0.60	1.20	250	10	1.0	2.0	F3	12.6	15.6	5.1	4.6	0.8
WH250-800	0.80	1.60	250	10	0.4	1.0	F3	15.0	19.5	5.1	4.6	0.8
WH250-1000	1.00	2.00	250	10	0.4	0.8	F4	21.1	23.6	10.2	4.6	0.8
WH250-1500	1.50	3.00	250	10	0.3	0.6	F3	21.0	37.5	10.2	4.6	0.8
WH250-2000	2.00	4.00	250	10	0.2	0.4	F3	26.2	32.8	10.2	4.6	0.8

A:WH250-080
B:WH250-090
C:WH250-110
D:WH250-120
E:WH250-145
F:WH250-180
G:WH250-200
H:WH250-400

自恢复保险丝参数说明:

以上产品资料内容如有变更将不另行通知，敬请谅解。不详之处，请来电咨询，谢谢！

适用于RS485接口电路保护的pptc

产品简介

产品编号：WHPTC	所属类别：通讯接口自恢复保险丝
浏览次数：次	订购热线：0755-29503750

标签

Model 型号	Ih	It	Vmaxi	Imax	Rmin	Rmax	Product Dimensions (mm) 最大产品尺寸
Model 型号	A	A	V	A	Ω	Ω	Style	A	B	C	D	Lead
WH250-030	0.03	0.06	250	1	35	90	F4	6.0	8.0	5.1	4.6	0.5
WH250-040	0.04	0.08	250	1	27	66	F4	6.0	8.0	5.1	4.6	0.5
WH250-050	0.05	0.10	250	1	20	45	F4	6.0	8.0	5.1	4.6	0.5
WH250-060	0.06	0.12	250	3	20	45	F4	6.5	9.0	5.1	4.6	0.6
WH250-080	0.08	0.16	250	3	10	22	F4	6.5	9.0	5.1	4.6	0.5
WH250-090	0.09	0.18	250	3	5.0	20	F4	6.5	9.0	5.1	4.6	0.5
WH250-110	0.11	0.22	250	3	6.0	12	F3	7.0	9.5	5.1	4.6	0.6
WH250-120	0.12	0.24	250	3	6.5	10.5	F3	7.0	9.5	5.1	4.6	0.6
WH250-145	0.145	0.29	250	3	3.5	6.5	F3	7.0	9.5	5.1	4.6	0.6
WH250-180	0.18	0.36	250	10	1.35	3.0	F4	10.5	13.5	5.1	4.6	0.6
WH250-200	0.20	0.40	250	10	3.0	6.0	F4	10.5	13.5	5.1	4.6	0.6
WH250-400	0.40	0.80	250	10	1.35	3.0	F3	11.2	14.2	5.1	4.6	0.8
WH250-600	0.60	1.20	250	10	1.0	2.0	F3	12.6	15.6	5.1	4.6	0.8
WH250-800	0.80	1.60	250	10	0.4	1.0	F3	15.0	19.5	5.1	4.6	0.8
WH250-1000	1.00	2.00	250	10	0.4	0.8	F4	21.1	23.6	10.2	4.6	0.8
WH250-1500	1.50	3.00	250	10	0.3	0.6	F3	21.0	37.5	10.2	4.6	0.8
WH250-2000	2.00	4.00	250	10	0.2	0.4	F3	26.2	32.8	10.2	4.6	0.8

A:WH250-080
B:WH250-090
C:WH250-110
D:WH250-120
E:WH250-145
F:WH250-180
G:WH250-200
H:WH250-400

自恢复保险丝参数说明:

以上产品资料内容如有变更将不另行通知，敬请谅解。不详之处，请来电咨询，谢谢！

符号Sign	说明	Definition
Ih	WHPTC在25℃环境温度下的最大工作电流	Hold current-maximum current at which the device will not trip at 25℃
It	WHPTC在25℃环境温度下启动保护的最小电流	Trip current-minimum current at which the device will always trip at 25℃
Vmax	WHPTC的最大工作电压	Maximum voltage at which the device will not trip
Vmaxi	WHPTC在阻断状态下所承受的最大电压	Maximum voltage device can withstand without damage at it rated current
Imax	WHPTC能承受的最大电流	Maximum fault current device can withstand without damage at rated voltage
Rmin	WHPTC工作前的初始最小阻值	Minimum device resistance at 25℃ prior to tripping
Rmax	WHPTC工作前的初始最大阻值	Maximum device resistance at 25℃ prior to tripping
Figure	图示	The Figure of WHPTC
Lead	导线尺寸	Lead diameter