SEMITRON INDUSTRIES LTD 43E D MM 8137889 0000171 & BMSLCB AV2, CHANGE IN ZENER VOLTAGE (mv) T-((-O% IN935-940B series Zener Reference Diode 9VO Volt Temperature Compensated APPLICATIONS m The ZR range are designed for operation at a specified current from 2 - 15 mA. It is recommended that Iz is held within 10% of nominal. FEATURES m All glass hermetically sealed case gives complete 25.0 min environmental protection , m Maximum operating range ~65C to +175C Storage temperature -65C to +200C w Maximum dissipation 400mW, derate linearly from +50C to +175C m Noise, bandwidth 2Hz 75KHz Cathode pp| | Iz 2.0mA < 150uv 3.2 dia 7 iz 7.5mA < 100uV max P }+# O max iz 15.0mA < 75yV The above levels are typical m Selected diodes are available including power burn in if required MECHANICAL DATA s2dia 96.0 min max . m Case: Hermetically sealed glass case DO7 @ Finish: Ail external surfaces are corrosion resistant and leads solderable m Thermal Resistance: 300C/W (typical) Junction to lead at 0.375" from body w Polarity: Diode to be operated with the banded end positive with respect to the opposite end m Weight: 0.2 grams m Mounting position: Any Dimensions in mm (007) TYPICAL CHANGE OF ZENER VOLTAGE WITH CHANGE IN OPERATING CURRENT +300 +200 +100 0 100 200 300 ' 7.5 2 4 6 8 10 12 144 #16 #18 20 I,, OPERATING CURRENT (mA) TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT +-0.006 +0.540 p =s +0.004 +0.360 3s Be +0.002 +0.180 BR z es ez 0 0 2 = zs I 33 gi ~0.002 0.180 =3 zo ez = 0.004 75 0.360 S 0.006 2 4 6 I,, OPERATING CURRENT (mA) 0.540 10 12 14 16 18 20 321SEMITRON INDUSTRIES LTD oa T-/1-09 u3E ) GM 8137889 OO00172 & BBSLCB q Vz t 5% izmA Rz Ohms TT Temp. Range ye % per C c 1N935 9.0 75 $20 40.01 O to +75 IN936 9.0 75 <20 20.005 O to +75 IN937 9.0 75 20 +0.002 0 to +75 IN938 9.0 75 <20 40.001 0 to +75 1N939 9.0 75 $20 +0.0005 0 to +75 Ing40 9.0 75 <20 40.0002 0 to +75 T Vz + 5% IzmA Rz Ohms wT Temp. Range we yp Max % per C ~ 2R935/20 9.0 2.0 40 60 +0.01 0 to +75 35/ 9.0 5.0 2a 30 +0.01 0 to +75 2R935/75 9.0 75 12 20 40.01 0 to +75 8/4 9.0 10.0 10 16 20.01 0 to +75 5/; 9.0 12.0 8 14 10.01 & to+75 2R935/150 = 9.0 15.0 6 10 10.01 0 to +75 2R936/20 9.0 20 40 60 +0.005 0 to +75 2R936/50 9.0 5.0 20 30 +0.005 0 to +75 2R936/75 9.0 75 12 20 40.005 0 to +75 2R936/100 9.0 10.0 10 16 +0.005 0 to +75 2R936/ 9.0 12.0 8 14 0.005 0 to +75 2R936/150 = 9.0 15.0 6 0.005 O to +75 2R937/20 9.0 2.0 40 6 0,002 0 to +75 2937/50 9.0 5.0 20 30 +0.002 0 to +75 2R937/75 90 75 12 +0.002 0 to +75 ZR937/100 9.0 10.0 10 16 +0.002 0 to +75 2R937/120 9.0 12.0 8 14 0.002 0 to +75 2ZR937/180 9.0 15.0 6 10 0.002 O ta +75 2R938/50 90 5.0 20 30 40.001 0 ta +75 2R938/75 9.0 75 12 20 +0.001 0 to +75 2R938/100 = 9.0 10.0 10 16 +0.001 0 to +75 2R938/120 9.0 12.0 8 14 40.001 0 to +75 2R929/50 9.0 5.0 20 30 +0.0005 0 to +75 2R939/75 9.0 75 22 20 0,0005 0 to +75 7R939/100 9.0 10.0 10 16 20.0005 0 to +75 7R939/120 9.0 12.0 8 14 +0,0005 0 to +75 Iz Range Rz Ohms max Type Vz 5% Min Max @ Max TC mun Iz max Iz 7$91 9.0 1 15 100 20 40.01 78905 9.0 1 15 100 20 0,005 zs902 9.0 2 15 75 20 20.002 zS901 9.0 3 12 50 20 40.001 NOTE The curve shown in Fig, 2 is typical of the diode senes and greatly simplifies the estimation of the Temperature Coefficient (TC) when the diode is operated at currents other than 7.5 mA. Example: A diode in this series is operated at a current of 7.5 mA and has specified Temperature Coefficient (TC) limits of +0.005%/C. To obtain the typical Temperature Coefficient limits for this same diode operated at a current of 6.0 mA, the new TC limits (%/C) can be estimated using the graph in FIGURE 2. At a test current of 6.0 mA the change in Temperature Coefficient (TC) is approximately -0.0009%/C. The algebraic sum of 0.005% /C and -0.0009%/C gives the new limits of +0.0041%/C and -0.0059%/"C. This curve illustrates the change of diode voltage arising from the effect of impedance. It is, in effect, an exploded view of the zener operating region of the !-V charactenstic. in conjunction with Fig. 2 this curve can be used to estimate total voltage regulation under conditions of both varying temperature and current. *Add suffix A to operate over the range - 85C to +100C and suffix B for -55C to +150C FIG. 1 POWER DERATING CURVE 300 z 200 i i 100 Bo Eg 2 50 100 50 200 e Ty. Lead temperature (C) 3/8 from body Multi current coefieent Soefcent FIG. 2 cunent tone TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT GS +.006 av = +.004 +35 +02 +12 3 oO 0 5 3 .002 * 12 2 5 00s 2 : & 006 a7 5 7s S 008 50 2 4 6 10 612)COd#s tz, Operating Current (mA) Fig. 3 POWER DERATING CURVE Pd, RATED POWER DISSIPATION (nw) o 8 B88 8 50 75 100 125 T.. Lead temperature (C) Ya trom nody (2, /AwW) 1U9IDY4909 esnrMseday Uy BUSY 322 Freee * E w a > : a 3 + n be Pee y FS 5 . 8s | . ge PN a