thin film microwave resistors ch vishay sfernice www.vishay.com for technical questions, contact: sfer@vishay.com document number: 53014 46 revision: 05-nov-07 features ? small size, down to 20 by 16 mils ? edged trimmed block resistors ? pure alumina substrate (99.5 %) ? various terminations: ? pre-tinned over nickel barrier (wraparound or flip chip) for solder reflow ? gold pad for wire (or ribbon) bonding (one face only) ? ohmic range: 10r to 500r ? small internal reactance (lc down to 1 10 -24 ) ? tolerance 1 %, 2 %, 5 %, 10 % ? tcr: 100 ppm/c in (- 55 c, + 155 c) temperature range those miniaturized components are designed in such a way that th eir internal reactance is very small. when correctly mounted and utilized, they function as almost pure resist ors on a very large range of frequency, up to 20 ghz. dimensions in millimeters [inches] a d d c (f) and (p) ( n ) a d d c e e b case size max. tol. + 0.1 [+ 0.004] min. tol. - 0.1 [- 0.004] dimensions power rating pn mw limiting element voltage v abcd/e max. tol. + 0.1 [+ 0.004] min. tol. - 0.1 [- 0.004] max. tol. + 0.1 [+ 0.004] min. tol. - 0.1 [- 0.004] max. tol. + 0.127 [+ 0.005] min. tol. - 0.127 [- 0.005] max. tol. + 0.13 [+ 0.005] min. tol. - 0.13 [- 0.005] 02016 0.5 [0.020] 0.4 (0.016) 0.5 (0.02) 0.15 [0.006] 30 30 0402 1.00 [0.040] 0.6 (0.023) 0.5 (0.02) 0.38 [0.015] 50 37 0505 1.27 [0.050] 1.27 (0.050) 0.5 (0.02) 0.38 [0.015] 125 50 0603 1.52 [0.060] 0.75 (0.030) 0.5 (0.02) 0.38 [0.015] 125 50 0705/0805 1.91 [0.075] 1.27 (0.050) 0.5 (0.02) 0.38 [0.015] 200 50 1005 2.54 [0.100] 1.27 (0.050) 0.5 (0.02) 0.38 [0.015] 250 75 1206 3.00 [0.126] 1.60 (0.063) 0.5 (0.02) 0.38 [0.015] 330 75 tolerance versus ohmic values ohmic range 10 r < 50 50 r < 100 100 r 500 tolerance 5 %, 10 % 2 %, 5 %, 10 % 1 %, 2 %, 5 %, 10 % rohs compliant
ch thin film microwave resistors vishay sfernice document number: 53014 for technica l questions, contact: sfer@vishay.com www.vishay.com revision: 05-nov-07 47 note: (1) 02016 not available with n termination - tape option: except p termination typical high frequency perfo rmance electrical model the complex impedance of the chip resistor is given by the following equations: the resistor is purely resistive when r = (l/c) 1/2 = z o . the smaller the lc product the greater the frequency range over which the resistor looks approximately resistive. this can be seen on the graphs relevant to 02016 (r = 100 , lc = 1 x 10 -24 ), 0402 (r = 129 , lc = 15 x 10 -24 ) and 1206 (r = 200 , lc = 100 x 10 -24 ). note: the external reactance (lc an d cg) depends on the pcb material, the layout and assembly technology. it does affect the hf performance and needs to be estimated. the external reactance can be utilized to compensate the internal one. global part number information new global part numbering: ch0402-50rjp (1) (preferred part number format) global model size ohmic value tolerance termination ch 02016 0402 0505 0603 0805 1005 1206 10r to 500r f = 1 % g = 2 % j = 5 % k = 10 % f (flip chip): snag over nickel barrier n (w/a): snag over nickel barrier (except 02016) p (one face): gold bonding pads historical part number example: ch 0402 50r 5 % p e2 (will continue to be accepted) ch 0402 50r 5 % p e2 historical model size ohmic value tolerance termination lead (pb)-free version e2: tin/silver e4: gold c r lc cg cg c: internal sh u nt capacitance l: internal ind u ctance r: resistance lc: external connection ind u ctance c g : external capacitance to gro u nd lc l z = r 1 + j x l /r 1 + j r/x c = arc tg r x c [z] = r 1 + (x l /r) 2 w ith x l = 2 fl: reactance of the internal ind u ctance w ith xc= i/2 fc: reactance of the internal capacitance f = fre qu ency 1 + (r/x c ) 2 1/2 x l (x c + x l ) + r 2 h0402 - 50r c jp
ch vishay sfernice thin film microw ave resistors www.vishay.com for technical questions, contact: sfer@vishay.com document number: 53014 48 revision: 05-nov-07 internal impedance curve for 02016 size internal impedance curve for 0402 size 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor (f and p terminations) c = 0.01 pf l = 0.1 nh 1000 500 250 200 150 100 75 50 25 10 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor n termination ( w raparo u nd) c = 0.03 pf l = 0.5 nh 1000 500 250 200 150 100 75 50 25 10 129
ch thin film microwave resistors vishay sfernice document number: 53014 for technica l questions, contact: sfer@vishay.com www.vishay.com revision: 05-nov-07 49 internal impedance curve for 0603/0505 size 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor (f and p terminations) c = 0.01 pf l = 0.2 nh 1000 500 250 200 150 100 75 50 25 10 129 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor n termination ( w raparo u nd) c = 0.05 pf l = 0.4 nh 1000 500 250 200 150 100 75 50 25 10 8 9
ch vishay sfernice thin film microw ave resistors www.vishay.com for technical questions, contact: sfer@vishay.com document number: 53014 50 revision: 05-nov-07 internal impedance curve for 0805 size 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor (f and p terminations) c = 0.01 pf l = 0.3 nh 1000 500 250 200 150 100 75 50 25 10 173 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor n termination ( w raparo u nd) c = 0.05 pf l = 1 nh 1000 500 250 200 150 100 75 50 25 10 141
ch thin film microwave resistors vishay sfernice document number: 53014 for technica l questions, contact: sfer@vishay.com www.vishay.com revision: 05-nov-07 51 internal impedance curve for 1005 size 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor (f and p terminations) c = 0.02 pf l = 0.5 nh 1000 500 250 200 150 100 75 50 25 10 15 8 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor n termination ( w raparo u nd) c = 0.05 pf l = 1.5 nh 1000 500 250 200 150 100 75 50 25 10 173
ch vishay sfernice thin film microw ave resistors www.vishay.com for technical questions, contact: sfer@vishay.com document number: 53014 52 revision: 05-nov-07 internal impedance curve for 1206 size 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor (f and p terminations) c = 0.02 pf l = 0.7 nh 1000 500 250 200 150 100 75 50 25 10 1 8 7 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor n termination ( w raparo u nd) c = 0.05 pf l = 2 nh 1000 500 250 200 150 100 75 50 25 10
ch thin film microwave resistors vishay sfernice document number: 53014 for technica l questions, contact: sfer@vishay.com www.vishay.com revision: 05-nov-07 53 0 0.2 0.4 0.6 0. 8 1.0 1.2 1.4 1.6 1. 8 2.0 0.1 1 10 100 f (ghz) izi/r impedance as a f u nction of fre qu ency for a chip resistor (f and p terminations) c = 0.03 pf l = 1 nh 1000 500 250 200 150 100 75 50 25 10
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