t hi n f il m c hi p r esistor s 61 series 0.030? x 0.030 ? spectrum microwave 61 series 0 .030 x 0 .030 thin-film resistor chips are available in a wide range of resistances an d tolerances. values are available from 1.25 ohms to 1 megohm. center-tapped resistors are standard for values up t o 500 k. applications include military and industrial hybrids, and medical, aerospace and communications equipment . 61 series resistor chips are available with either passivated nichrome or tantalum-nitride resistor metalization. nichrom e provides excellent stability and temperature coefficient in hermetic applications while tantalum-nitride provides superio r moisture-resistance for non-hermetic applications. spectrum microwave t el : 508-485-6350 fax: 508-485-516 8 165 cedar hill s t ree t, marlborough , ma 0175 2 www.spectrummicrowave.co m electrical specification s p arame t e r li m i t test condition s p owe r ra t in g 200 m w (derated at 70 to 0 mw @ 150 ) li f e 0 . 2% ma x 1000 hours @ 125 c nois e -35 db ty p mi l -st d - 202 m e t hod 30 8 high temp exposur e 0 . 2% ma x 100 hou rs a t 150 c tcr (61ac, 61al ) 50 ppm / c - 55 t o 125 c tcr (61act ) -50 to -120 ppm/ c - 55 t o 125 c operating voltag e 100 vdc ma x moisture resistanc e 0 . 5% ma x mi l -st d - 202 m e t hod 10 6 thermal shoc k 0 . 5% ma x mi l -st d - 202 m e t hod 10 7 mechanical specification s substrat e s ili con wi th 1 m i cron therma l ox i d e bond pad metalizatio n gold, 100 microinche s siz e 0.031 x 0 .031 0.002 (0.78 x 0.78 mm 0 .05 mm ) thicknes s 0.013 0.003 (0.33 0.07 mm ) bond pad dimension s 0.004 x 0 .004 minimum (0.1 x 0.1 mm ) pr o t e ct i v e o v e rc oa t ( pa ss i v a t ion ) 0.6 microns sio2 (61ac & 61al versions only ) back side lapped silicon typical configuration s
spectrum microwave a l so manufactures c ustom substrates on a variety of materials, a wide range of microwave, pin diode drivers , and custom hybrid circuits. please contact the factory or your local representative for more information. (specifications subject to change without notice. ) t hi n f il m c hi p r esistor s 61 series 0 . 030? x 0 . 030 ? all parts are 100% electrically tested, sample tested per mil-std-38534 section 3.4, and visually inspected to mil-std-883 requirements. chips are supplied in standard 2" x 2" matrix tray packaging . base part cod e 61xxx - 61ac (nichrome center-tapped ) 61al (nichrome , no cen t er- t ap , values above 500k only ) 61act (tantalum-nitride center - t apped ) value (3 digits plus exponent ) nnn e (under 100 ohms, an r indicates th e decimal point location. ) t olerance lette r x b = 0 . 1 % c = 0.25 % d = 0 . 5 % f = 1 % g = 2 % j = 5 % k = 10 % m = 20 % o r d er ing exam pl es: 61ac-5002k i s a 50 k iloh m 10% ce n ter-ta pp e d res i st o r wi t h ni c h r o me meta li zat ion . 61al-1004j is a 1 megohm 5% resistor with nichrome metalization . 61ac t- 50r1 f i s a 50 . 1 oh m 1% ce nt er -t a pp e d res i s to r with t a nt a lu m -nit r id e me t a liz a tio n. availability and limitations : 61ac series is available from 2.5 ohms to 600 kohm s. 61 a l s e r ie s i s a v ailable fr o m 250 k oh ms t o 1 m egoh m. 61act series is available from 1.25 ohms to 300 kohm s. b tolerance is available above 250 ohm s. c tolerance is available above 100 ohm s. d t olerance is available above 50 ohm s. f tolerance is available above 25 ohm s. g tolerance is available above 12 ohm s. j tolerance is available above 5 ohm s. ordering informatio n
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