【选型】自恢复保险丝1812L110/33MR用于工业级3D视觉相机电源输入过流防护设计,待机状态功耗仅0.0726W
为避免工业级3D视觉相机电源输入因负载短路异常造成燃烧风险,一般在电源输入加一颗自恢复保险丝做过流保护设计,选型因素参考如下:
1、 额定工作电压:一般是DC12V或24V供电,上限不超过30VDC,一般建议选择耐压33VDC自恢复保险丝设计即可;
2、 保持电流:与负载功率大小及环境工作温度相关,通常工业相机环境工作温度不超过50℃,一般选择在高温50℃条件下保持电流至少800mA自恢复保险丝;
3、 低待机功耗。
针对如上的设计需求,推荐选择LITTELFUSE(力特)自恢复保险丝1812L110/33MR ,1812封装,最大额定工作电压33VDC,常温25℃下保持电流1.1A,在50℃条件下保持电流830mA,可承受最大故障电流20A,工作温度范围-40℃~85℃,通过UR、TUV认证,典型电性参数参考如下图1所示。
图1:Littelfuse(力特)自恢复保险丝1812L110/33MR典型电性参数
推荐理由如下:
1、 低待机功耗:可以通过计算得出,利用P=Ihold*Ihold*R得出,其中自恢复保险丝保持电流Ihold为1.1A,Rmin=0.06Ω,Rmax=0.2Ω,其中Ihold、Rmin和Rmax可通过图1中电性参数表格获取,带入公式得到Pmin=0.0726(W),Pmax=0.242(W),即待机状态时的功耗为0.0726W~0.242W;
2、 通过UR、TUV安规认证,可满足欧美安规出口要求。
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型号- RF1252-000,RF2625-000,RF2706-000,RF3120-000,RF2722-000,RF3023-000,RUEF600-AP,RHEF650,RF2641-000,RF2560-000,PSR-25600Z,RF3755-000,LR4-190XF,PSR-28546,RF0106-000,RGEF1000-2,RUEF110S,RGEF1000-1,RKEF400-2,RF3899-000,TSM600-250F-RA-2,AGRF600S-1.15,RHEF600-2,RGEF800,VLP220F,LVR100S-240,122814-000,RF3523-000,TRF600-160,RF3417-000,RF0079-000,RF4815-000,RF3248-000,RUSBF185,MGP500,TRF250-120T-0.177,RXEF250,RXEF017S,RF3336-000,RF3361-000,LR4-550F,RUEF185S RF4606-000,RF3255-000,RF4903-000,MXP190B,RUSBF110-2,PSR-28523,RF4459-000,RXEF065-2,TRF250-120UT,TRF250-120US,AGRF1200,PSR-28527,PSR-28528,RUEF800-1,RUEF800-2,PSR-28704-1.3,RF4378-000,RGEF800K-0.142,RF2776-000,RXEF017H,LR4-380SSDF,RHEF200,RF3280-000,LVR033K,RF2695-000,RXEF030-2,RF0169-000,LVR033S,598204-000,MXP190,RUSBF160,LR4-190SLF,RF2650-000,RF1083-000,AHRF900,RF0032-000,RF2713-000,PSR-27656,VLP175DDUF,F81914-000,RF0489-000,RF3764-000,RF0764-000,RF4644-000,RF3746-000,TRF600-150,MHP-TAM15-9-85N,RF4822-000,MXP180,RF3352-000,RF3568-000,RKEF050-AP,RF3190-000,RUSBF155,LVR125S-240,RF3584-000,PSR-28510,LVR075S,PSR-28511,RF4894-000,TS250-130F-2,PSR-28279-2,RF3329-000,RF2222-000,RUEF500K-AP,TRF600-150-PH-0.118,RHEF1000S-DE,VLP190ULLF,RF3345-000,RF3620-000,RF1396-000,RF3239-000,TRF250-183-2,AHEF100,RF0703-000,RF2688-000,RHEF050-AP,RF1671-000,RF3399-000,TRF250-145US-B-0.5,RUSBF135,RF2873-000,RF4806-000,LR4-190SF,RKEF375K,SRP350DF,TSL250-080F-2,RF0016-000,RF3262-000,RUEF400K-2,RF2634-000,RGEF1100B-2,657076-000,VTP240F,RF2880-000,LR4-1300F,RGEF400,RUSBF120,RF2627-000,PSR-28148,PSR-28149,RF3498-000,AGRF700,RF2805-000,SRP175SF,A33463-000,RUEF800,TRF250-120U-2,RF2704-000,RF0043-000,RUSBF110,RF2724-000,RF2767-000,RF0178-000,RXEF110-2,SRP200F,RF0771-000,RF2783-000,RF2740-000,RUEF185-AP,RF4698-000,D63282-000,RF3282-000,RF3176-000,VLR170DF,RF4743-000,TRF250-145-RA-B 0.5-2,RF2697-000,RF3419-000,RF4786-000,RF3327-000,PSR-28127,RF0034-000,RF0077-000,RF3246-000,RF5008-000,RGEF500K-2,RF3203-000,RF1245-000,RF3656-000,RF4376-000,RUEF600-1,SRP420F,RUEF600-2,AHRF070,TSL250-080F-B-0.5-2,MHP-TAC6-12-82,RF1502-000,RF2774-000,PSR-29430,LR4-900F,RF2731-000,PSR-29432,MHP-TAC6-12-85,TSM250-130F-RA-2,RF3748-000,AHRL600,RGEF900-2,RKEF075,RF0014-000,RF2632-000,RGEF900-1,TRF250-120US-2,PSR-29440,RF3174-000,PSR-29441,VTP110F,AHRF050,TRF250-120UA,VLP120UF,TRF250-120T-0.125,RF2711-000,RF3253-000,RF3210-000,RKEF065,F95315-000,RF3032-000,RF2452-000,RF3347-000,A05570-000,RXEF040S-2,AHRF200-CF,LVR005NK-2,RXEF025-2,RGEF1200-1,RF3397-000,RGEF1200-2,AGRF500-2,RF1795-000,RF4808-000,RKEF090,RF0516-000,TRF250-120T-R2-B-0.5,LVR075S-2,RF3354-000,LVR075S-1,RXEF075-AP,RF2769-000,RGEF700K-2,AHEF500,RF3505-000,RF4599-000,RF4729-000,RF4407-000,MHP-TAC6-12-72,RF0543-000,MHP-TAC6-12-77,RF1968-000,D83387-000,TR600-150F-EX-2M,RF2519-000,RF1673-000,RF3275-000,SRP120LLF,758968-000,AHRF650-2,RF2765-000,RF3244-000,RHEF070-2,RF2668-000,RF3341-000,RF2781-000,VLR175F,MHP-TAC15-12-90N,RUEF400-2,RUEF400-1,RF4455-000,RUEF600K-2,A87878-000,RF2564-000,RF2661-000,RF3759-000,RF3518-000,RF0246-000,TRF600-160-2,RF1554-000,TRF600-160-1,RXEF050S,RF1682-000,RUEF600K,RKEF250-AP,RF0045-000,RF4583-000,SRP175LF,RF1973-000,TRF250-145T,TRF250-145U,RF1698-000,VLR170LF,RF3212-000,RF3760-000,RF3259-000,RF2733-000,RF4126-000,RF3372-000,RF2652-000,RKEF160,RUEF300,RHEF200-2,RF0431-000,AHRF100,RUSBF185-AP,RF2677-000,RF3413-000,RF2839-000,RKEF110,RF2693-000,RF3446-000,RF3318-000,RF3187-000,RF3284-000,TRF250-120T-RF-B-0.5,RF2136-000,RF4479-000,RF4754-000,RF3298-000,RF2233-000,RF3059-000,RF2638-000,VLR170F,RF3230-000,RF3388-000,TCF250-120T-RA-B-0.5,RF3302-000,LVR055S-1,RGEF300,PSR-25600ZU,TRF600-150-RB-B-0.5,RUEF400-AP,LR4-190F,TRF250-080TA,RKEF135,RF4020-000,RF2623-000,AHRF550,RGEF700K,MGP420K,RGEF1400-2,RGEF1400-1,RF3356-000,RGEF500K-AP,MGP420D,RF3228-000,AHRF1500,RXEF010-AP,RF3117-000,PSR-25905,VTP170XSF,RUSBF185-2,TCF250-145T-B-0.5,MHP-TAT18-9-90N,RXEF075P-AP,RF2562-000,RF3358-000,LR4-970HF,RF3242-000,RF3773-000,RF4392-000,AHRF450-2,RF1599-000,TRF600-150-B-0.5-2,RUEF300U-2,RXEF010S,F17956-000,SRP120LAF,RF3257-000,VLR170UF,RHEF700,RF2663-000,RF2778-000,RF0361-000,RF2891-000,RHEF400-2,RUEF900K-2,RF3370-000,RF4450-000,LVR200S,RXEF110K-2,RF2708-000,RF4666-000,A13328-000,RUEF160S,RF2763-000,RF1858-000,TRF250-080T-2,C37664-000,TRF250-180-0.125,TRF250-120T-RA-B-0.5,RHEF900-1.5,TR600-150F-EX-2,RF3057-000,RUEF250S,RUEF250U,MHP-TAT18-9-85,RF0030-000,RF1756-000,RF3286-000,MHP-TAT18-9-82,RF2691-000,RF3415-000,RF3444-000,LR4-970KF,RF2479-000,RF3401-000,MHP-TAT18-9-90,RKEF500,RF3316-000,RF4752-000,RUEF400-JE,RF3672-000,AHRF1000-2,LVR075K-1,AHRF450S-1,RKEF065-AP,LVR005NS-1,RF0018-000,LVR005NS-2,RF3343-000,RGEF700-AP,RF2636-000,MXP370BD,RHEF750S-0.77,RUSBF090,RF3386-000,RF2679-000,RF4910-000,TRF250-055T,RF3300-000,MXP180K,RF3516-000,RXEF185K,AHRF1100,RXEF185,RF4524-000,MHP-TAT18-9-77,LVR025K,RF0003-000,RHEF070-AP,MHP-TAM15-9-90N,MXP370BL,RF4394-000,LVR025S,MHP-TAT18-9-72,RF3384-000,MXP270,RF3295-000,RF3376-000,RF3287-000,RF4692-000,RXEF020-2,RUEF250J-2,RF3305-000,RF0637-000
如何为汽车电动车窗控制开关选择一款汽车级自恢复保险丝实现瞬时过载电流保护?
汽车电动车窗的控制开关接触瞬间会有很大的瞬时峰值电流,约300mA~500mA,持续时间约50ms以内,仅靠电阻无法做到快速响应保护,故设计电路需要再加一级保护,在电源线上串接一颗额定电压30VDC、保持电流Ihold为0.1A,跳闸电流Istrip为0.25A的littelfuse可恢复保险丝microASMD010F,实现瞬时过载电流保护,让控制系统实现高可靠性。
Littelfuse(力特) 1812L系列自恢复型PTC产品数据手册
型号- 1812L075-C,1812L,1812L075/33,1812L160/12DR,1812L150/24,1812L010/60DR,1812L260/12MR,1812L035/60,1812L160,1812L260/16MR,1812L110/24DR,1812L110-C,1812L150ZR,1812L200,1812L260THDR,1812L200THPR,1812L125/16,1812L380/12THYR-A,1812L020PR,1812L110/33,1812L035/30,1812L020/60DR,1812L150/12,1812L125/6PR,1812L150/16,1812L200/12,1812L200/16,1812L160/12,1812L300MR,1812L110,1812L020/60,1812L075,1812L125/16DR,1812L160PR,1812L075/33DR,1812L260TH,1812L150,1812L125/6,1812L010/60,1812L110/33MR,1812L160-C,1812L260/16,1812L075PR,1812L050/30,1812L050PR,1812L110/24,1812L260/12,1812L300,1812L075/24DR,1812L035/30DR,1812L010DR,1812L020,1812L014DR,1812L110PR,1812L200TH-C,1812L200DR,1812L110/16,1812L150/16DR,1812L260TH-C,1812L075/24,1812L200/12DR,1812L050/60,1812L150-C,1812L150/12DR,1812L200/16DR,1812L050,1812L110/16DR,1812L150/24MR,1812L014,1812L050-C,1812L010,1812L200TH,1812L050/30PR
1812L Series Surface Mount PolySwitch® Resettable PPTC Datasheet
型号- 1812L75/33,1812L SERIES,1812L,1812L075/33,1812L160/12DR,1812L150/24,1812L010/60DR,1812L260/12MR,1812L035/60,1812L160,1812L260/16MR,1812L110/24DR,1812L150ZR,1812L260THDR,1812L200THPR,1812L125/16,1812L380/12THYR-A,1812L75/24,1812L110/33,1812L020PR,1812L035/30,1812L020/60DR,1812L150/12,1812L125/6PR,1812L150/16,1812L200/12,1812L200/16,1812L160/12,1812L300MR,1812L020/60,1812L110,1812L075,1812L125/16DR,1812L160PR,1812L260TH,1812L075/33DR,1812L150,1812L125/6,1812L010/60,1812L110/33MR,1812L260/16,1812L075PR,1812L050/30,1812L050PR,1812L110/24,1812L260/12,1812L300,1812L035/30DR,1812L075/24DR,1812L010DR,1812L020,1812L014DR,1812L110PR,1812L110/16,1812L150/16DR,1812L075/24,1812L200/12DR,1812L050/60,1812L150/12DR,1812L200/16DR,1812L050,1812L110/16DR,1812L150/24MR,1812L014,1812L010,1812L200TH,1812L050/30PR
【选型】力特自恢复保险丝用于车载77G电动尾门雷达电源输入过流防护设计,待机功耗仅0.171W
为避免车载77G电动尾门雷达电源输入因负载短路异常造成燃烧风险,一般在电源输入加一颗自恢复保险丝做过流保护设计,推荐选择Littelfuse(力特)自恢复保险丝ASMDC185F/33 ,订单料号RF4575-000,2920封装。
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