kdi-resistor products 60 south jefferson road, whippany, nj 07981 tel: 973-887-8100 fax: 973-884-0445 www.aeroflex-kdi.com sales@aeroflex-kdi.com key : inches [millimeters] .xx .03 .xxx .010 [.x 0.8 .xx 0.25] general information when mounted on an appropriate heat sink, these chip devices provide high power dissipation in terminations and as balancing resistors in wilkenson power divider networks. laser trimming provides maximum peak and average r.f. power capability. ordering information series ppc, npc resistors, terminations high power chip ?50 & 100 ohms notes 1. the ??and ??dimensions are for the substrate only and do not include terminal thickness or optional tinning thickness. 2. thermal resistance (r? is measured in c/w between resistive film and mounting surface. 3. the cw power rating is based on maximum film temperature of +150 c and with maximum heatsink temperature of +100 c. power is based on infinite and ideal heatsink. type ??termination style does not have full back plane metallization and typically handles 1/10 the rated power. general specifications solderable terminals electroplated silver over nickel (ppc) gold over nickel alloy (npc) substrate beryllium oxide ceramic resistive element thin film and thick film* example: typical model no. npc t 25-50 x j prefix tinning (if required) size terminal type (x, w or g) ohmic value (note 1) 50r0 or 1000 ppc or npc x tolerance key f = 1% g = 2% j = 5% (standard) (see note a below) w l t b r? model (note 1) (note 1) capacitance c/w max. c/w freq. prefix in [mm] in [mm] in [mm] in [mm] (pf) typical (note 2) power ghz (**) *ppc 100-200a 0.100 [2,5] 0.200 [5,1] 0.040 [1,02] 0.030 [0,76] 0.8 0.80 20w dc-4.0 *ppc 250-250a 0.250 [6,4] 0.250 [6,4] 0.040 [1,02] 0.050 [1,27] 1.2 0.30 40w dc-2.5 *ppc 250-375a 0.250 [6,4] 0.375 [9,53] 0.040 [1,02] 0.050 [1,27] 3.5 0.15 150w dc-1.0 npc 25-50 0.025 [0,64] 0.050 [1,27] 0.010 [0,25] 0.012 [0,305] 0.3 3.90 3w dc-12.4 *npc 50-50 0.050 [1,27] 0.050 [1,27] 0.010 [0,25] 0.012 [0,305] 0.5 1.90 5w dc-10 *npc 50-100 0.050 [1,27] 0.100 [2,5] 0.010 [0,25] 0.017 [0,43] 1.0 0.72 10w dc-4.0 npc 75-150 0.075 [1,91] 0.150 [3,8] 0.010 [0,25] 0.020 [0,51] 1.8 0.29 15w dc-4.0 performance specifications note a resistance value is expressed using military 4-digit call-out. 50r0 = 50 ohms 1000 = 100 ohms other values from 10 500 ohms may be available as special order. contact factory for availability. physical dimensions to p view w b t l b type x b t l b type g 50 ohms or 100 ohms 50 ohms only 50 ohms or 100 ohms b t l b type w (note 3) 0.005[0.13] max *low cost thick film models available on these sizes. consult factory for specifications. **typical vswr for all terminations is 1.25:1 rev 3/05
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