【经验】可恢复保险丝(PPTC)在光模块测试设备应用中的注意事项和选型推荐
光模块测试设备可以用来测试产线模块的数据通信、模块配置、出厂信息、工作时外壳温度等功能,在光模块测试设备设计时,需要可恢复保险丝PPTC,对整个测试设备进行保护作用。
测试设备的工作电流在达到3A时需要起到保护作用,那么是否就意味着需要选择3A规格的保险丝?其实不然,因为设备在工作时,电流可能会接近3A,而PPTC都有自己的内阻,大电流经过时温度会升高,所以需要注意:
1、选择贴片的保险丝,设计方便
2、注意选择工作时的最高直流电压,在这个设备中,最好选择12V或者以上
3、在保险丝下方尽量铺地来散热,防止PPTC无限制升温
4、注意在工作温度下的I-Hold电流:一般情况下PPTC的工作温度会达到70-80℃,所以选择的PPTC一定要注意在这个值,建议选择LITTELFUSE的PPTC 2920L700/12,请看下面的曲线图:
在温度达到70-80℃时,2920L700/12的I-Hold电流会减少到50%,在25℃下是7A的I-Hold电流在此时还有3-3.5A,符合设计标准。此外2920L700/12为2920贴片封装,12V DC耐压。
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型号- 1206L010/60,1206L025YR,1206L035/16YR,1206L,1206L110THYR,1206L005/60WR,1206L110/16WR,1206L025,1206L075/16,1206L020,1206L0501,1206L075/16WR,1206L035YR,1206L020/30,1206L050/15YR,1206L010/30WR,1206L005/60,1206L200PR,1206L SERIES,1206L035/30WR,1206L110/16,1206L035,1206L050/24,1206L020/30YR,1206L010/60WR,1206L020YR,1206L075/13.2,1206L050/24WR,1206L380/12THYR-A,1206L035/16,1206L050/15,1206L200,1206L050YR,1206L175PR,1206L010/30,1206L035/30,1206L012/48WR,1206L016,1206L012WR,1206L075THYR,1206L016WR,1206L150TH,1206L025/24,1206L110TH,1206L050,1206L150THWR,1206L012/48,1206L025/24YR,1206L012,1206L075/13.2WR,1206L175,1206L075TH
Manufacturing Site Extension for PolySwitch® China Made Surface Mountable PPTC (41443)
型号- RF4439-000,NANOASMDC010F-2,MICROSMD010F-2,RF5031-000,RF4927-000,RF1694-000,RF5112-000,NANOASMDCH050F/24-2,MICROASMDCH125F-2,RF0315-000,RF4897-000,ASMDC030F-2,RF5023-000,SETP0805-100-SE-2,RF1406-000,RF4560-000,RF0323-000,RF2145-000,RF2587-000,PICOSMDC050S-2,SMD300F-2,RF4269-000,SMD250F/15-2920-2,MINISMDC075F/33-2,MICROASMD005F-2,MINISMDC075F-2,RF2149-000,RF1348-000,SMD200F-2018-2,RF2153-000,RF0319-000,RF1518-000,RF4564-000,AHS200-2,RF5062-000,FEMTOASMDC010F/15-2,RF5051-000,NANOSMDC050F/13.2-2,RF4559-000,SMD300F/15-2,MINISMDC260F/12-2,SMDC050F-2,MINISMDC110H/24-2,RF1511-000,MINISMDC125F/16-2,MICROSMD050F-2,MINISMDC030F-2,MINIASMDC125F/16-2,RF2150-000,MINISMDC150F/24-2,RF5027-000,MINISMDC200F-2,RF0320-000,RF1905-000,PICOASMDCH020F-2,NANOSMDC020F-2,SMDH160-2,RF1345-000,SMD075F/60-2,FEMTOSMDC010F-2,RF0311-000,NANOASMDCH010F-2,RF1689-000,AHS300F/24-2,MINISMDC110F/24-2,SMD260F-2,RF3182-000,RF1179-000,RF1437-000,RF5055-000,MICROSMD200F-2,RF1411-000,RF1691-000,RF2161-000,RF4572-000,RF1183-000,RF4568-000,RF2285-000,RF2157-000,RF4525-000,RF1631-000,ASMD100F-2,RF1864-000,MINIASMDC260F/13.2-2,RF1638-000,NANOASMDC016F-2,NANOASMDC050F/13.2-2,PICOSMDC020S-2,RF1405-000,FEMTOASMDC008F-2,RF0316-000,RF4561-000,SMDC300F/24-2,MINIASMDC030F-2,SMD030F-2,RF1464-000,PICOASMDCH035F-2,RF0324-000,NANOASMDCH016F-2,ASMD250F-2,FEMTOSMDC016F-2,SETP0805-100-CC-2,NANOSMDC010F-2-S,RF1632-000,RF2286-000,RF0318-000,RF1403-000,MICROASMDCH150F-2,MINISMDC160F-2,RF2154-000,RF1180-000,NANOSMDC025F-2,MINISMDC150F/16-2,RF1636-000,ASMDC075F-2,MICROSMD005F-2,RF1352-000,RF3101-000,RF1347-000,ASMDC300F/24-2,RF5032-000,RF2148-000,RF1409-000,SMD150F-2,SMD150F-2018-2,SMD185F-2,RF3695-000,RF4576-000,PICOASMDC012S-2,ASMD150F/33-2,RF0312-000,NANOASMDCH005F-2,NANOASMDC035F-2,ASMD030F-2,PICOASMDC075S-2,NANOASMDC012F-2,RF4558-000,RF1346-000,ASMD185F-2,ASMD200F-2,RF4575-000,MICROSMD150F-2,NANOSMDC200F-2,MINISMDC110F-2,SMD250F-2,MINIASMDC150F/24-2,PICOSMDC075S-2,RF1336-000,SMD200F/24-2920-2,RF2158-000,RF1184-000,RF4565-000,RF1353-000,MICROASMDCH110F-2,NANOSMDC075F-2,PICOSMDC035S-2,MINIASMDC075F-2,ASMD075F-2,RF4983-000,FEMTOSMDC010F/15-2,RF1410-000,SMDC125F/33-2,SMD150F/33-2920-2,RF1637-000,RF5105-000,MINISMDC260F-2,SMD100F-2,MINISMDC150F-2,RF1479-000,FEMTOSMDC005F-2,MINIASMDC150F/12-2,RF1342-000,RF4571-000,NANOASMDCH035F/30-2,RF2160-000,SMD100F/33-2,MINIASMDC260F/12-2,RF5054-000,RF2169-000,RF2487-000,RF4898-000,PICOASMDC035S-2,PICOASMDCH016F-2,MINIASMDC110F/16-2,MINIASMDCH050F-2,RF3927-000,FEMTOSMDC035F-2,RF4570-000,RF1404-000,FEMTOSMDC012F-2,RF4562-000,RF0317-000,RF2287-000,AHS120F/33-2,RF1633-000,NANOSMDC150F-2,RF1181-000,RF2155-000,RF3692-000,RF1358-000,RF1641-000,SMDC030F-2,NANOASMDCH035F-2,RF1692-000,MICROSMD110F-2,MINIASMDC014F-2,RF4569-000,FEMTOASMDC005F-2,MINISMDC260F/13.2-2,RF3102-000,RF1335-000,RF1696-000,RF1238-000,RF1378-000,RF5033-000,PICOSMDC012S-2,SMD030F-2018-2,RF0313-000,ASMDC050F-2,RF3696-000,RF5064-000,RF1408-000,RF2151-000,MINISMDC100F-2,PICOSMDC110S-A-2,NANOSMDC035F-2,RF0325-000,SMD150F/33-2,RF1351-000,RF2147-000,MINIASMDC020F-2,MINISMDC200F/16-2,RF0422-000,MINISMDC050F-2,SMD200F-2,MINISMDC260F/16-2,PICOSMDC110S-2,MICROSMD035F-2,RF1185-000,RF1478-000,RF4574-000,MINISMDC075F/24-2,AHS080-2018-2,SMDC075F-2,MICROASMD050F-2,RF5053-000,MINIASMDC200F/16-2,RF2159-000,RF2477-000,NANOASMDC025F-2,RF1354-000,RF4566-000,RF2573-000,RF1907-000,NANOASMDCH075F-2,SMD075F-2,AHS160-2,RF0322-000,RF4929-000,RF1467-000,RF1471-000,RF1644-000,RF1343-000,SMDC185F/33-2,PICOASMDC020S-2,RF5025-000,ASMD125F-2,MINISMDC200F-A-2,NANOSMDC012F-2,MINIASMDC075F/33-2,MINISMDC010F-2,RF1359-000,RF1634-000,RF3693-000,MICROASMD010F-2,RF0308-000,RF5030-000,MICROSMD175F-2,RF1350-000,RF2146-000,RF4367-000,RF4896-000,RF4438-000,NANOASMDC020F-2,PICOASMDCH050F-2,MINIASMDC010F-2,RF2162-000,SMD050F-2,ASMDC125F/33-2,ASMDC185F/33-2,RF1407-000,RF0314-000,RF1989-000,RF1640-000,MINISMDC150F/12-2,RF4466-000,PICOASMDC110S-2,RF5029-000,RF5034-000,RF0326-000,RF1512-000,MINISMDC125F-2,MICROSMD050H-2,RF1695-000,RF4914-000,MICROSMD075F-2,RF1334-000,RF2926-000,RF4563-000,AHS300-2,RF4520-000,MINISMDC110F/16-2,RF2152-000,FEMTOSMDC020F-2,PICOASMDC050S-2,NANOSMDC010F-2,ASMD150F-2,NANOSMDC110F-2,RF4795-000,SMD100F-2018-2,RF5052-000,RF1639-000,MINISMDC020F-R-2,PICOASMDCH010F-2,MINISMDC020F-2,RF4778-000,RF4646-000,SMDH120-2,AHS120-2,DECASMDC050F/60-2,RF4441-000,PICOASMDCH005F-2,RF4573-000,RF1344-000,MINIASMDC110F/24-2,RF1835-000,MINIASMDC075F/24-2,FEMTOSMDC008F-2,MINIASMDC050F-2,PICOSMDC010S-2,SMD125F-2,MINISMDC300F-2,RF4298-000,ASMD050F-2,RF4819-000,RF2156-000,MINIASMDC260F/16-2,RF0321-000,NANOSMDC016F-2,MINIASMDC150F/16-2,RF4161-000,RF1690-000,PICOASMDC010S-2,RF1338-000,MICROASMDCH075F-2,RF4567-000,MINISMDC014F-2,RF1182-000,RF1355-000,RF5024-000
0603L Series Surface Mount PolySwitch® Resettable PPTC Datasheet
型号- 0603L020,0603L050,0603L003/36,0603L035,0603L003/36YR,0603L SERIES,0603L010,0603L002/60YR,0603L004,0603L025,0603L010YR,0603L020YR,0603L002/60,0603L001/60,0603L008,0603L008YR,0603L050YR,0603L001/60YR,0603L004YR,0603L,0603L025YR,0603L035YR
Coating Material Change for Radial Lead PPTC(LFPCN 41481)
型号- 30R135UU,RF3392-000,30R090UU,RF2714-000,RF2625-000,RF3384-000,RF3295-000,RF2706-000,RF3376-000,RF2633-000,RF5090-000,RF2722-000,RF3198-000,RF3287-000,72R160XMR,RF2641-000,RF2560-000,60R185XMR,RF4692-000,RF2730-000,RF3747-000,RF3755-000,RF5074-000,RF3208-000,RF3305-000,RF0106-000,30R160UPR,RF3321-000,RF5003-000,RF3224-000,RF3899-000,RF4613-000,RF2559-000,RF4796-000,RF4877-000,RF3240-000,RF3191-000,RF2753-000,RF2656-000,RF3279-000,RF5089-000,RF5019-000,RF2575-000,30R500UFX1002,RF3417-000,RF3778-000,RF4990-000,RF4815-000,RF3248-000,RF3336-000,RF3361-000,RF3344-000,60R110XU,RF4903-000,RF3255-000,RF4989-000,RF2729-000,RF4184-000,RF3353-000,RF2738-000,RF3410-000,RF4997-000,RF3263-000,RF5012-000,RF3233-000,RF2776-000,RF2648-000,RF4363-000,RF3054-000,30R800UH,RF3280-000,RF2665-000,RF2567-000,RF4935-000,RF2695-000,RF3367-000,RF3278-000,RF2650-000,AHRF,RF1083-000,D47180-000,RF3391-000,RF4659-000,RF3306-000,RF2624-000,RF2707-000,RF2713-000,30R250UPR,72R135XMR,RF3403-000,RF5004-000,30R700UMR,RF2561-000,RF3383-000,RF3764-000,RF3241-000,RF3636-000,RF3746-000,RF4822-000,RF3352-000,60R375XH,RF3207-000,RF2687-000,RF4717-000,RF3190-000,RF3223-000,RF2673-000,RF5081-000,C45161-000,RF3320-000,RF5059-000,RF2723-000,RF4894-000,RF3377-000,RF2820-000,RKEF,RF4766-000,AHRL,RF3329-000,RF2655-000,AGRF,RF2639-000,RF2728-000,RF3345-000,RF2672-000,RF3328-000,RF5116-000,RF2566-000,RF4998-000,RF3239-000,72R,60R,RF3256-000,72R090XPR,RF2688-000,RF5009-000,RF2649-000,RF0087-000,72R185XMR,RF3055-000,RF2666-000,RF4733-000,RF3330-000,RF3932-000,RF3399-000,60R050XUL25,72R250XMR,60R010XU,RF2640-000,RF4806-000,RF3313-000,RF2762-000,60R025XPR,RF3202-000,RF2745-000,RF4089-000,30R090UPR,RF5011-000,RF3262-000,RF3796-000,RF3418-000,RF4855-000,RF2634-000,RF3288-000,60R090XPR,RF3749-000,30R300UU,RF2694-000,30R300UUL34,RF3218-000,RF3226-000,RF3404-000,RF3277-000,RF3331-000,RF5099-000,A73875-000,RF0538-000,RF5092-000,RF3374-000,RF2627-000,RF3269-000,RF2712-000,RF3234-000,F47151-000,RF2755-000,60R020XPR,RF4992-000,RF3211-000,RF3297-000,RF3254-000,RF2704-000,RF3382-000,RF2724-000,RF2674-000,RF2767-000,RF2631-000,RF4740-000,RF2783-000,RF4909-000,RF3303-000,RF4275-000,RF3346-000,RF3206-000,RF2740-000,RF3249-000,RXEF,RF3282-000,RF4999-000,RF3389-000,RF2719-000,RF4743-000,RF3231-000,RF3060-000,RF2752-000,RF5036-000,RF4884-000,RF2840-000,RF2654-000,30R600UF,RF2697-000,RF3419-000,RF3319-000,RF2689-000,72R075XPR,RF2611-000,RF3327-000,30R185UPR,60R160XMR,RF0034-000,RF3246-000,RF5008-000,RF2569-000,RF3203-000,RF4856-000,600R150-RAF,RF3355-000,RHEF,RF3312-000,RF3398-000,72R160XF,RF3656-000,72R030XPR,RF2682-000,RF4677-000,RF2727-000,RF2774-000,RF3332-000,RF3375-000,RF2731-000,RF3189-000,RF3748-000,60R025XU,RF4764-000,RF3756-000,RF0057-000,30R,RF3268-000,RF3197-000,60R010XPR,RF3225-000,RF2675-000,RF2632-000,RF2768-000,RF3304-000,RF2754-000,RF5077-000,RF2711-000,RGEF,RF3253-000,RF3296-000,RF3210-000,RF2660-000,RF3347-000,RF2748-000,30R400UF,RF2626-000,RF2705-000,RF4863-000,72R135XFL40,RF3219-000,RF2669-000,RF4991-000,RF3381-000,RF3655-000,RF3397-000,RF3281-000,RF4328-000,30R400UMR,72R065XPR,RF3761-000,RF4808-000,RF2681-000,RF3053-000,60R135XF,RF3311-000,RF3354-000,RF3204-000,RF3247-000,RF4212-000,RF2769-000,30R160UU,RF4599-000,RF5035-000,RF4729-000,RF2760-000,RF4407-000,A32837-000,RF3777-000,RF2696-000,RF3360-000,RF2653-000,RF5084-000,RF3326-000,RF2568-000,72R020XPR,RF3196-000,RF3369-000,RF4763-000,RF2726-000,RF3828-000,RF2732-000,RF2775-000,RF3405-000,RF3232-000,60R090XU,RF3275-000,RF3448-000,RF2647-000,60R017XPR,RF2846-000,RUEF,RF4994-000,RF3252-000,RF2757-000,60R110XMR,RF3244-000,RF2765-000,RF2579-000,RF4609-000,RF3058-000,RF2668-000,RF2676-000,60R075XPR,RF3341-000,RF2781-000,RF2773-000,RF2692-000,RF3309-000,RF4455-000,72R050XPR,RF2684-000,RUSBF,RF3260-000,RF2564-000,RF2661-000,30R500UF,RF3267-000,RF3348-000,RF3759-000,RF3317-000,RF3414-000,RF5094-000,RF4931-000,RF3283-000,RF3186-000,RF2718-000,RF4850-000,RF3364-000,RF3236-000,RF4803-000,RF2710-000,RF2699-000,RF3205-000,600R,60R040XPR,RF4389-000,D66727-000,RF4672-000,RF4858-000,RF3379-000,RF3380-000,RF3291-000,RF2912-000,RF3212-000,RF2637-000,RF3387-000,30R185UU,RF3760-000,RF2556-000,RF3396-000,RF4777-000,RF3301-000,RF2725-000,60R160XF,30R600UMR,RF3259-000,60R050XU,RF2733-000,RF2703-000,RF3276-000,RF3406-000,C61007-000,30R900UMR,RF2750-000,RF2629-000,RF3325-000,RF4126-000,RF3372-000,RF2622-000,RF3308-000,RF2652-000,RF2571-000,RF4792-000,RF4762-000,60R065XPR,RF3324-000,RF3227-000,RF2677-000,RF3413-000,RF3261-000,RF2659-000,72R040XPR,RF4977-000,RF3235-000,RF2839-000,RF2756-000,RF4993-000,RF2667-000,RF3349-000,RF3340-000,RF3357-000,RF3251-000,RF2693-000,72R250XF,RF4091-000,RF3318-000,RF5093-000,RF3284-000,RF2717-000,60R017XU,RF3298-000,RF2644-000,60R030XPR,RF2630-000,60R300XF,RF3758-000,RF3059-000,RF3266-000,RF3334-000,RF0037-000,RF2638-000,RF2766-000,RF3290-000,RF3230-000,RF3388-000,RF4125-000,RF2698-000,16R,RF3302-000,RF4142-000,RF4247-000,RF2662-000,RF5000-000,RF3299-000,RF2734-000,30R110UPR,RF4697-000,RF2645-000,RF2623
2016L Series Surface Mount PolySwitch® Resettable PPTC Datasheet
型号- 2016L050MR,2016L075/60MR,2016L100/33DR,2016L260/24,2016L150/33DR,2016L150/33,2016L075/60,2016L500DR,2016L500,2016L200PR,2016L200,2016L SERIES,2016L100,2016L100PR,2016L,2016L150DR,2016L500DR2016L030DR,2016L300/16,2016L260/24MR,2016L075/060,2016L030DR,2016LXXX/XXDR-A,2016L300/16MR,2016L030,2016L150,2016L050,2016L100/33
【PCN】LITTELFUSE Reel Change Notification for Japan made PolySwitch® miniSMDC PPTC (LFPCN# 41369)
型号- RF2227-000,PSR-27313-075,NANOSMDC050F/13.2-02,F10609-000,PSR-27313-035,PSR-27313-110,MICROSMD200F-02,RF2609-000,RF1421-000,RF0393-000,MICROSMD005F-02,RF1977-000,RF2226-000,RF2057-000,FEMTOSMDC005F-02,NANOSMDC075F-02,MICROSMD110F-02,PICOSMD010F,NANOSMDH075F-02,RF1420-000,RF0392-000,RF0390-000,RF1628-000,NANOSMDCH010F-02,RF1161-000,RF0387-000,RF0386-000,RF1415-000,RF4148-000,MICROSMDCH010F-02,RF0391-000,NANOSMDC020F-02,FEMTOSMDC008F-02,NANOSMDC035F-02,NANOSMDC016F-02,RF0385-000,FEMTOSMDC012F-02,MICROSMD010F-02,PICOSMD110F,RF1418-000,NANOSMDC150F-02,RF0389-000,RF1604-000,MICROSMD035F-02,RF2265-000,RF2290-000,RF1515-000,PSR-27313-050,PSR-28741-02,FEMTOSMDC010F-02,PSR-27313-012,PSR-27313-010,RF1002-000,RF2345-000,RF1605-000,RF1221-000,RF1514-000,MICROSMD150F-02,RF1419-000,RF4548-000,RF0388-000,RF1416-000,FEMTOSMDC035F-02,PICOSMD020F,MICROSMD175F-02,NANOASMDCH010F-02,PICOSMD012F,PSR-27313-020,NANOSMDC012F-02,PICOSMD050F,RF1220-000,MICROSMDCH050F-02,PSR-25348,FEMTOSMDC020F-02,RF1417-000,FEMTOSMDC050F-02,MICROSMD050F-02,RF0554-000,MICROSMD075F-02,NANOSMDC110F-02,FEMTOSMDC016F-02,PICOSMD075F,RF0762-000,RF0394-000,PICOSMD035F
Tin plating Solution Change For PolySwitch® Surface Mountable PPTC Made-in Littelfuse Tsukuba Plant (LFPCN# 41455)
型号- RF4714-000,NANOSMDC050F/13.2-02,PSR-27313-035,RF4706-000,MICROSMD200F-02,RF2609-000,MINISMDC075F/24-02,RF2226-000,RF2309-000,RF4712-000,NANOSMDC075F-02,FEMTOSMDC005F-02,SMDCH200F/24-02,NANOSMDH075F-02,RF1420-000,RF1658-000,RF0392-000,RF3763-000,RF0390-000,RF1161-000,RF0386-000,SMDCH050F/24-02,MINISMDC260F-02,MICROSMDCH010F-02,NANOSMDC020F-02,NANOSMDC016F-02,PSR-27313-020-02,MINISMDC150F-02,FEMTO SMDC,MICROSMD010F-02,RF1418-000,NANOSMDC150F-02,RF0389-000,RF1604-000,PSR-27313-012,FEMTOSMDC010F-02,PSR-27313-010,MINISMDC260F/16-02,RF2345-000,RF1663-000,MINISMDC020F-02,SMDCH150F/24-02,RF1221-000,RF1514-000,RF2958-000,RF1416-000,MICROSMD175F-02,NANOASMDCH010F-02,MINISMDC150F/12-02,RF1591-000,RF3895-000,PSR-27313-020,RF1661-000,RF4679-000,SMDCH075F/24-02,PSR-28343-02,MINI SMD,PSR-27313-XXX,RF4681-000,RF4715-000,MICROSMD075F-02,MINISMDC014F-02,RF0762-000,RF1593-000,SMDCH125F/24-02,SMDC,RF2227-000,PSR-27313-075,NANOSMDCH030F/24-02,F10609-000,PSR-27313-110,RF1421-000,RF4713-000,RF0393-000,MICROSMD005F-02,RF1977-000,MINISMDC050F-02,MINISMDC110F/24-02,RF2057-000,MICROSMD110F-02,NANO SMDC,RF1628-000,NANOSMDCH010F-02,MINISMDC200F-02,PSR-29252-C-02,RF0387-000,RF1415-000,RF4148-000,MINISMDC150F/24-02,RF0391-000,RF1659-000,NANOSMDC035F-02,FEMTOSMDC008F-02,RF0385-000,FEMTOSMDC012F-02,MICROSMD035F-02,RF1515-000,RF2265-000,RF2290-000,RF4680-000,PSR-27313-050,PSR-28741-02,MINISMDC160F-02,MINISMDC110F/16-02,RF1002-000,MINISMDC260F/12-02,MICRO SMD,RF1592-000,RF1605-000,MICROSMD150F-02,RF1419-000,RF0388-000,RF1662-000,FEMTOSMDC035F-02,RF1688-000,RF1594-000,SMDC310F/18-02,PICO SMDC,NANOSMDC012F-02,RF4432-000,MINI SMDC,RF1220-000,PSR-25348,MICROSMDCH050F-02,FEMTOSMDC020F-02,RF1417-000,MICROSMD050F-02,RF0554-000,NANOSMDC110F-02,FEMTOSMDC016F-02,RF4682-000,PSR-XXXX,RF0394-000
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