LOB Datasheet, PDF (1/3 Pages) Welwyn Components Limited – Low Resistance Metal Element Resistors

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Welwyn Components
Welwyn Components
Welwyn Components
LOB Series
··^{Element Resistors L}_L^L_•O^OO_(UBUA(_U^BB_00vllSl.tt.0^S_tae0^Sr_r^{L••}_r0aia^e_rl^e_0a^O_a5i^rl_le^r_Ao(Uobⁱ₅^eiB_sl0^e_wwvl_o^{s•••l}_e^s_.aΩ^t0S_wtrri^r_onleeAT^U(e_0aa⁰_os_st0^r_bv1r5ii^li_ollss.^._e^e_,la^t_e1^o_e⁰_tt3^sr_sΩiaa_r0wl⁰_i^a_anin_aans.cnc⁵_b1)te1^re^l_dcalo^Ωeo_,eevΩv_n53^s_as^wa_0i^ic_lwn^t_al)u^s_f.u_en^o_1re^t_ae1o^r_d^a_stsv,^e_tmΩ⁰ⁿ_5a3r^s._a^c_w)l¹ⁱ_±taue^s_ea1^Ω_ne^t_dt^v_%dt^a_s⁾_p^a_rⁿ_5a^l_t^u_cto^c_wek^ee_da±a^s_g5pt^v_et%as^a_crka^lu_atge^e_ed^s_spackages
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ATILTILH^(ATIL_nnno⁰_{ooooovvihhh.lglwlw}aw_{a0eeeeee••••hii0rrr}l_{lrrrttaaataae}⁵_{eeseeenbbTILHnnn}^Ω_{tnnnmmmoaolclccitteteh•••glebelew}^tlp_lppeyyy^o_eishsisi_{enreenlILHrnnintafrf}⁰_{nfertrsoerrar1onoa1ioya}^._tnoohogm^1t,_{wantct,nnutmmomeu}^Ω_{u3hbe3-l--pryvirririsi}^)ne_{taneneeae±le±±sinednfdtnr1drctn1r1ccoyamudaoo%udluoot%%tincebomflccu5eeptey}5-_{tftivtrttfifoeviwlinefiiooewv±vincertdc±raeei1ca±oy±aei(5tuloe%t≤t((ti5nn5%fctoune.er%t%-0trattvriio}a_{2onvetooe≤ef}t_{μedfef±rd.cr.H00u}dr(_{er5olee2p2isca%ef}pssµ_{iaµttseiif}a_{cisHHsot0f≤vkatctif.aa.ae}k_ncaa50rnngiatt_{ceM2e(eccge0s0≤µneseHie...Hs55t0}s_{ztMMa)2aontµHHfc0Hzzre.))e5asMtisH0tza.)5nMceHz)}
• ^H_Hⁱ_i^g_gh^h _s^s_t^t_a^a_b^b_iⁱ_l^l_iⁱ_t^t_y^y_o^o_v^v_e^e_r^r_li^l_f^if_e^e
Electrical Data
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Electrical Data
LOB-1
LOB-3
LOB-5
Continuous power dissipation at 25°C in free air
watts _LOB-1 1
LOB-3 ³
LOB-5 ⁵
Contin^Ou^vo^eu^rs^lop^ao^dw^pe^or^wd^eis^rsi^fp^oa^rt⁵ion^sea^ct^o2ⁿ5^d°^sC in free air
watts ^{wLaOttBs -1} 1 ⁵
LOB-3 ₃ 15 LOB-5 ₅ 25
ContinuoOuvseprloMwadaexrpidm_oiwsusemipr afw_otiroo5rnk_sian_etg_c2o5v_no°dClt_saingefree air
watts _watts volt1s
5 ^√1xR
3
15 ^√3xR
5
25 ^√5xR
OverloadMpaoxwimeM_{ur m}afoxri_wm5ousrmekicnos_gtnodvr_osa_lg_tae_gt_eemperature
watts _volts °C5 _√1xR 175
15 _√3xR 175
25 _√5xR 175
MaximumMawxo*_imrPko_uiwnmger_svD_toislrstaiap_gga_eteio_tn_em- T_ph_erm_ata_uxi_rm_eum wattage rating depends upon tvhoeltasmount o_°Cf heat√w1xhiRch can₁₇b₅e transferred to√th3exRsurrou₁n₇di₅ngs while not e√x5cexeRding t₁h₇e₅maximum element
Maxim_*u_Pm_ows_et_ro^tine_Dr_tma_iosg^p_sai^ee_pcrca^at_ot^te_i^uu_om^rnet.p_-wATe_h^mr_ea^bnt_mⁱu^es_aⁿr_exe^tle_im^acitr_uinm^tegm_waparetet^rs_a^ai_gsttueorr^e._a^,_ti^v_n^e_g^lo_d^c_e^it_p^y_e^o_n^f_d^c_s^o_u^o_p^li_oⁿ_n^g
air,
the
a^thm^eo^rmun^at^l°o^rCef^sh^ise^ta^atⁿw^cehi^oc^fh^hc^ea^an^1t7b^a5e^ndtra^thn^esfe^terr^med^peto^rat^th^ue^resu^or^fro^suu^rn^1rd^o7uin⁵ⁿg^dsⁱⁿw^g
obj_hec_ilt_es_nw_oi_tll_ea_xf_cf_ee_ect_dit_nh_1gi₇s_t5t_hr_ean_msf_ae_xr_i,_mth_ui_ms m_elu_es_mt _eb_ne_ttaken
*tePmopweerraDtuitirsneestmi.opApaamtecirobcaoniteuu-nnrTteth.awAeirhmmteebanmixespinmeetleruaacmittruintwreegam, _{atvtpeareelgorseacistirttuaoyrtreoi.n,fgvceodlooeclpiinetygndoafsirc,uotphooelnirnmgthaael} ^irrae, mtshisoetuarmnntcaeol ^{rfoehfsehisaettaanwt cahenicdohftchhaeenattebmaenptdreatrnhastefuetrreermeodpf etsourartrthoueurensuodrfirnsoguuronrobdujienncgdtssinwwghiloillbea}
notjeecxtcsewedililnag the ^{tmhiasxtirmanusmfeer,ltehmisemntust}
this transfer, this must be taken
be
taken
Physical Data ^{into account when selecting a resistor.}
PhyPsihcya^DslimiDcenasa^ioltnsaD^(mam)ta
Dimen_Ts_yi_po_ens (mm_L) _max.
D max.
f min.
d nom.
Dimensions (mm)
Type ^LOB-L¹max⁹.^.9±0.3D max³.^.6±0.2f min³. ^8.1±3.d²no⁰m^.8. ^13±0.05C
Type _LOB-1L^LOB₉^-3_.9±¹₀⁴_.3^.2D^2±0₃^.2_.6⁵_±0⁵_.2^.33f^±0₃^.₈²_.⁵_1±3³_.2^4.9d³₀^±_.8³₁^.₃¹_±⁸_0.0⁰₅^.C⁸¹n^±om⁰₃^.₃⁰_.⁵₂₇
LOB-1 _{LO9B.9-±30}^L_.^O₃₁^B₄^-_.2⁵_2±²₀³_3.2^._.6³_5±⁷₀^±_5.⁰_2.^.₃²₃⁵_±0.⁸32^.85³.1⁸±^±₃₃₄⁰.^.29²₃⁵_±30³_.1.¹881^.73⁵±0^±_.08³.10^._±¹50⁸_.05^1.3⁰3².2^±73⁰₃^.0_.2⁵₇
LOB-3 _{1L4O.B2-25±0.2235.37±50.3.235±0.82.538±03.42.593±331.1785±3.01.881±10.0.025±0.05} 33.2742.42
contact point
C
contact point
C
33.27
33.27
42.42
contact point
contact point
d
dD
C
d_{C D}
D
L
contact point
contact point
L
f
f
L
f
LOB-5 23.37_D±_e0._s2_c5_rip8_t.3_io8±_n0.25 31.75±3.18 1.02±0.05
42.42
Construction
Desc^Lr^Oip^Bt^Ωion^{Series power precision metal element resistors feature} Cons^Lt^Oru^Bc^Ωti^So^en^{ries resistors feature tinned copper leads welded}
DescripLOtiBoΩn^reS^se^isr^tie^as^ncp^eow^vae^lur ^ep^sre^dc^ois^wioⁿn ^tm^oe⁰t^.a⁰l⁰e⁵le^Ωm^wen^itt^hre^vs^iris^tuto^ar^ls^lyfeⁿa^otureConstrLuOcBtiΩo^dnⁱS^ree^cri^te^lys ^tr^oes^aist^lo^or^ws f^te^ea^mtu^pr^ee^rati^tn^un^re^ed^coco^efp^fp^ice^ierⁿle^ta^rd^es^siw^staeⁿld^ce^ed^{element in}
LOB Serieessisptaoⁱⁿnw^dce^uer^cvp^ta^arlⁿeuc^cei^es^.iod^Ano^vw^amⁱn^le^at^bao^ll^e0e.ⁱl0ⁿe0m¹5^,en³â„¦t^arwⁿeis^dtihs⁵tvo^wirrst^auf^tea^tall^rty^au^tnr^eeo^{d axial lea}L^dO^eB^dSerdieirsercet^alsyi^hsttⁱo^go^hras^lylfoe^awa^ut^tut^oer^memt^api^tne^enr^daetd^pu^rrc^oeo^pcp^rop^ieee^tar ^rle^ya^pd^rs^orw^ce^ees^sil^ssd^.tea^Tdn^hc^ee^le^el^ae^dm^ee^dn^rt^ei^sn^istor
resistanicnedvuac^pltua^aen^csc^ked^a.^goA^ewv^sn^,ai^ttl^haob^e0^sle.^e00i^rn^e5^s1ⁱ,Ω^st3^owa^rsnitd^ah^r5^eviwr^ct^oau^mtatl^plrya^atn^teⁱo^bd^leax^wia^itl^hle^aa^ud^te^od^matd^icirectlyatohiaglh^eol^lewy^matue^etmⁿo^tmp^s e^aar^rta^eetdu^thrpe^erⁿcoop^eerⁿie^ct^aa^pry^sup^laroe^tesci^desstⁱasⁿ.nT^ache^mee^ole^uam^ld^deeⁱⁿnd^gtrie^cns^oi^msto^pr^ound.
inductapnaccek. aAⁱgⁿve^sa^esil^r,a^ttbⁱh^oleⁿsie^en^qr1e^u,s^ip3is^mtaon^erdⁿs ^ta5^.rewcaottmraptaetdibalexiwalitlehaaduetdomatic a highlyealeumtoemntasteadreptrhoepnrientacrayppsurolacteesds.iTnhaemleoaudleddinrgescisotmorpound.
• ^{ipnascekratigoeinnss,eetqhruteAiiospepnmrpeeeqlnsiiutcs.itapotmrisoeannrtes. compatible with automatic}
Applica^St^wioⁱn^tcs^{hmode and linear power supplies.}
• • ^{ApplicatioSwnistcAhmutoodmeoatnivde lcinuerraernpto-sweenrsisnugpcpilriceus.its.}
• _{• •} ^{SwitchmAoudtoem}_I^a_n^no_st^d_rivu^lie_m^nce_{euanrrtrpaetnoiotw-nsee.}^{rnssuinpgplcieirsc.uits.}
• _• ^{AutomoIntisvterucmurernentatt-isoenn.sing circuits.}
• ^{Instrumentation.}
elements are then encapsulated in a moulding compound.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
Gener^Aal^llNⁱⁿo^fot^re^{mation is subject to Welwyn’s own data and is considered accurate at time of going to print.}
A subsidiary of
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11. 11
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