Radial Leaded PTC OZRA Series ®OZRA Series Fuse RoHS bcompliant & Halogen-Free Application High Current Appllcatlons Product Features Very High Hold Currents, Low DCR Reslstancs Operating (Hold Current) Range 3A , 14A Maximum Voltage 16VDC Temperature Range 40°C to 85°C Agency Approval TUV (Std. EN60738-1-1, Cert R50102187) L|L Component (Std. UL1434, File E305051) UL Conditions at Acceptability: 1. These deVices have been investigated far use in safety circuits and are suitable as a limiting deVice. 2. These deVices have been calibrated to limit the current to 8 amps within 5 seconds, per ANSI/NFPA 70, “National Electrical Code" LEAD FREE 1 ® Electrical Characteristics (23°C) HALOGEN FREE : El Pm Number Hold Trip Mex Time to Trip Max Hated Typical Reswtanos Tolerance Agency Approvals Current Current @ 5x|H Current Voltage Power Rmin Rmax R1mflx “ A (Bum IH, A iT, A Seconds Imax, A Vmax, Vdc Pd, w Ohms ohms Ohms ” " "1" A UZRA0300FF1C 3 5.1 2.0 100 16 2.3 0.034 0.0530 0.105 Y V B OZRA0400FF1 E 4 6,3 3.5 l 100 16 2.4 0.020 0.0350 0.053 Y l v C 0ZRA0500FF1E 5 8.5 3.6 100 16 2.6 0.014 0.0210 0.044 Y V D OZRADSDDFF1 E 6 10.2 5.8 100 15 2.8 0.009 0 0160 0.033 V Y E 02nA0700FF1A 7 11.9 0.0 100 16 3.0 0.006 0.0100 0.021 v v F 02RADSO0FF1A 8 13.6 9.0 l 100 15 3.0 0.005 0.0110 0.015 Y l V G 02RA0900FF1A 9 15.3 12.0 100 16 3.3 0.004 0.0085 0.015 V V H OZRA1000FF1A 10 17.0 125 l 100 15 3.3 0.003 0.0075 0.012 Y l V I UZRA1100FF1A 11 18.7 13.5 100 16 3.7 0.003 0.0065 0.010 Y V J OZRA1200FF1A 12 20.4 150 l 100 15 4.2 0.002 0.0055 0.009 Y l V K quA1400FF1A 14 23.8 20.0 100 15 4 6 0.002 0 0045 0.000 v v IH Held Current-maximum current at which the device will not trip in still air at 23°C. IT Trip current-minimum current at which the device will always trip in still air at 23°C. Imax Maximum fault current device can Withstand without damage at rated voltage (Vmax). Vmax Maximum voltage device can withstand Without damage at its rated current. Pd Typical power dissipated by device when in tripped state in 23°C still airenvironment. Rmin Minimum deVice resistance at 23°C. Rmax Maximum deVice resistance at 23°C. R1 max Maximum device resistance at 23°C, 1 hour after initial device trip, or after being soldered to PCB in end application. speciticatians subiect to change Without natice b | 280%.... s e PROTECTION Bel Fuse lric. +1 201.432.0463 205 Van Varst Street technetp®bellcom 0 be‘ 9WD Jersey City, NJ 07302 USA betfuse.com © 2017Bel Fuse, lric 0ZRAJan20t71/4
Radial Leaded PTC OZRA Series -® UZRA Series Fuse RoHS 6 Compliant 8t Halogen-Free PTC's — Basic Theory of Operation / ‘Trlpped~ Resistance Explanation Fundamentally, a Bel FTC consists of a block of polymeric material containing conductive filler and bonded between two conductive, planar terminations, At currents below the device lHOLD rating, AND at temperatures below 1000, the FTC maintains a resistance value below its R1 MAX rating. As the device‘s temperature approaches 130C, either due to an increase in ambient temperature or a current exceeding its ITFtIP rating, volumetric expansion of the filled polymer breaks apart the majority of conductive pathways across the terminalzcreated by chain contact of adjacent filler particles or device resistance increases sharply by several orders of magnitu e, At the much higher “Tripped” resistance, there is just enough leakage current to allow internal healing to “hold" the device in its tripped state (around 1250) until power is interrupted. Once power is removed, the PTC's core cools and contracts allowing conductive chains to reform and return the device to its low resistance state. The catalog data for each device specifies a "Typical Power" value This is the power required to exactly match the heat lost by the tripped device to its ambient surroundings at 230 By Ohm's Law, power can be stated as: w : EAz/R. Thus the approximate resistance of a “Tripped” PTC can be determined by: R : EA2/W, where "E" is the voltage appearing across the PTC (usually the supply's open circuit voltage), and "W" is the Typical Power value for the particular PTCr Since the PPTC acts to maintain a constant Internal temperature, Its apparent resistance will change based upon applied voltage and, to a lesser degree, ambient conditions. Consider the following example” A PTC with a Typical Power of 1 watt protecting a circuit using a 60V supply will demonstrate an apparent, tripped resistance "R" of: R : 60A2/1 : 3,600 ohms This same tripped device when used to protect a 12V circuit would now present an apparent resistance of: R :12A2/1:144 ohms The value for Typical Power is "typical" because any physical factors that affect heat loss (such as ambient temperature or air convection) will somewhat alter the level of power that the PTC needs to maintain its internal temperature In short, PTCs do not exhibit a constant, quantifiable tripped resistance value, Tvpe Time - To - Trip at 23°C (See Elec. Characteristics Table luv P/N , Curve correlation) A BCDEFGHIJK mm inn 1D on Time - To - Trip (8) our a not 1 10 we Fault current (A) Specifications subject to Change Without notice b | 23mm 5 e PROTECTION Bel Fuse lnc. +1 201432.046?) 205 Van Vcrst Street techhelp®bellconl 0 be‘ 9WD Jersey City, NJ 07302 USA belfuse.com © 2017 Bel Fuse, lrlc OZRA Jarl2017 2 / 4
Product Dimensions if 4—i a F A44 2 _ A B c D E F - T P'" “"“b” F" Max Max Tvnical Min Mex Tvnical ozmaooicr 1 7.1 11 .0 5,1 7.3 5.0 1.2 I uzmmorrr 1 as? 12.3 5.1 7.3 3.1: 1.2 OZW5UOFF 1 10.4 14.3 5.1 7.6 3.0 1.2 4; uzmnsaorrr 1 13.7 17.1 5.1 7.3 3.3 1.2 - PF ozm7uoi=r 1 11.2 19.7 5.1 7.5 3.0 1.2 OZHADEOOFF 1 12.7 20.9 5.1 7.3 3.0 1.2 ‘ OZRADQHOFF 1 14.0 21.7 5.1 7.6 3.0 1.2 FISH oznmnnoFr 1 13.5 24.1 5.1 7.3 3.3 1.2 0ZRA1IUOFF 1 17.5 26.0 5.1 7.6 3.0 1.2 Lead Size : zkoe Lead Size 1BAWG aznmzuorr 2 17.5 28.0 lu.2 7.6 3.6 1.4 00.91 min Diameter 01.0 min Diammr OZHA1400FF 2 27.9 27.9 10.2 75 5,5 1.4 Thermal Derqiing Curve Percentage of Hold Current and Trip Current Hold & Trip Currentand Thermal Derating Curve lam. 25m 2307. 15:17. mm. 5m. 0'). Radial Leaded PTC OZRA Series ® OZRA Series Fuse RoHS 6 Compliant 8( Halogen-Free Physical Specifications Lead material: Matte plated COPPH, size/ diameter as shown in Dlawings and Table under Product Dimenslons. Soldering criereoierisiice MIL-STD-ZOQ. Method ZUEH. lnsuleiing coating Flame reiardani epoxy, meeis UL-QA-V—U requirements. PTC Marking “be ' or ”D”, . IH code and ”HA" . All dimensions in mrn. ceuiionery Note: 1. operatic" beyond the seeeined ineximuni reiiiies or immune! use my resin in dlfluge and possible eieclricai arcing and/or fluriie 2 These polymer PTO (Pl’rcl devices ure imended for oroiociion against occasional oveiourreml Device w' overmrnperarure 1er condlrlons and may nor oe suiiuhle lor use in fiDDllcminrs where reoeeied end/oi prolonged fault condilions are uniioipaied | de erminale p [for :5. Avoid oonieoi ol Pro device wllh oneniioel soiveiii. Prolonged comm muy adversely impoci me FTC performance. ;. Thesu pm devioee irny noi oo suiiuolo lor use in vllcuiis wiiri a large inductance. as me Pic Irip oun generuw oirouii voltage spikes unovetno Pro med vuliuue. 5. These devices ave inisndad for use in Dc voltage | e lll eman uppillzallcns only. Use In AC volluge applioerions should be lirsl discu§ed wiin Bel Fuse engineering. 6. Not recommended loi use on poiied or ounlorriiul 40 .20 i —Hold Cuneni Domed pea-e nuwiniori oi iroe eir Now could eiieoi 21) 40 51: 30 eieclricai periorrranoe and/o! resim in device fuilure. u Ambie nt Tempe ram re ((2 ) Ounsull aei Fuse englrleefing» 7 1.. me “Indelymiriale Performance I grey Iona". . inppiiig may occur on cannoi be relisd upon. For — Tn p current spevlul olrounisrenoes eoisioering use within iriis region. oonsulr Bel Fuse Engineering. helm PROTECTION Specifications sunieci in change Wllhaul norice SOLUTIONS 8 Bei Fuse irlc. +1 201.432.0463 206 Van VDrsi Street techhelp@beilcom Jelsey Clly, NJ 07302 USA belfuse.com o bei group © 2017 Bei Fuse. inc OZRA Jan2017 3 l4
Radial Leaded PTC OZRA Series ® UZRA Series Fuse RoHS 6 Compliant & Halogen-Free Soldering Parameters Leed-freeWavedeerinngfile WaveSoldle'arxlma WMWMB mlaewld . . W1VTC/seoond Healingraiedmng Drew Mum / nmmmpemue mnimmmmmmn PeekmpemMeTp 260°C nmviminM/flmmpenkmpemn 5mm Rampuourime 5°C/seeondmax. G 260 2.— I.“ 1 D E ILI E 1no ILI l— 25 100 TIM E (8 EC) Standard Packaging P/N Explanation and Ordering Information PIN Bulk Reel/Tape OZHA W X x xx Pas/Box P/N Coda Pas/Reel P/N Code PTO series ozriAuauuFF 2mm 10 2qu 2D uzm Sam OZWWWUFF IHOLD Hating — _ 3000 15 2500 20 mm Van mm. m m using in mm. Characterislics lam: an PI oznAnsnnFF Electrical Characteristics OZHAowoFF 1000 1A 1500 25 231232.21.”§5;°2W.Mm,s mum oznAnannFF Mechanical Features _ 1000 1A N/A N/A r = 5mm new" oznAunuFF Mo 2 (amp. n = Speclai. minmsyspeo, iezd lurrnmu. sic. Tape & Heel my — s“ gm.“ mug“; Specmcaiians subject to change Wlihaui notice POWE R bel SOgUTIcONOS 8 Bei Fuse im +1 2014320463 PR TE 1" N 205 Van Vnrsi Street iechheip©beilwm c be group Jersey ciiy, NJ 07302 USA belfuse.com © 2017 Bei Fuse, inc OZRA Jan20i7 A / 4