Dodavatel: GM electronic, spol. s r.o., Křižíkova 77, 86 Praha 8 zákaznická linka: 84 6 7 technický list TECHNICAL DATA Watt Surmetic 4 Silicon Zener Diodes This is a complete series of Watt Zener Diodes with tight limits and better operating characteristics that reflect the superior capabilities of silicon-oxide-passivated junctions. All this is in an axial-lead, transfer-molded plastic package that offers protection in all common environmental conditions. Specification Features: Up to 8 Watt Surge Rating @ 8.3 ms Maximum Limits Guaranteed on Seven Electrical Parameters Mechanical Characteristics: CASE: Void-free, transfer-molded, thermosetting plastic FINISH: All external surfaces are corrosion resistant and leads are readily solderable POLARITY: Cathode indicated by color band. When operated in zener mode, cathode will be positive with respect to anode MOUNTING POSITION: Any WEIGHT:.7 gram (approx) WAFER FAB LOCATION: Phoenix, Arizona ASSEMBLY/TEST LOCATION: Seoul, Korea N333B through N388B WATT ZENER REGULATOR DIODES 3.3 VOLTS CASE 7 PLASTIC MAXIMUM RATINGS DC Power Dissipation @ TL = 7 C Lead Length = 3/8 Derate above 7 C Rating Symbol Value Unit PD Operating and Storage Junction Temperature Range TJ, Tstg 6 to + C 4 Watts mw/ C PD, MAXIMUM POWER DISSIPATION (WATTS) 8 6 4 L = 3/8 L = L = /8 L = LEAD LENGTH L = TO HEAT SINK L = (SEE FIGURE ) 4 6 8 4 6 8 TL, LEAD TEMPERATURE ( C) Figure. Power Temperature Derating Curve str
technický list Dodavatel: GM electronic, spol. s r.o., Křižíkova 77, 86 Praha 8 zákaznická linka: 84 6 7 N333B through N388B ELECTRICAL CHARACTERISTICS (TA = C unless otherwise noted, VF =. Max @ IF = A for all types) JEDEC Type No. (Note ) Nominal Zener Voltage VZ @ IZT (Note ) Test IZT Max Zener Impedance ZZT @IZT (Note ) ZZK @ IZK = (Note ) Max Reverse Leakage IR µa @ VR Max Surge ir, Amps (Note 3) Max Voltage Regulation VZ, Volt (Note 4) Maximum Regulator IZM (Note ) N333B 3.3 38 3 4 3.8 44 N334B 3.6 3. 8.7.8 3 N33B 3.9 3 7.6.4 N336B 4.3 9 6.4.49 N337B 4.7 6 4.3.44 N338B. 4. 4 4.4.39 93 N339B.6 4 3.4. 86 N34B 6 3 3.7.9 79 N34B 6. 3.4. 76 N34B 6.8 7... 7 N343B 7. 7..7.7. 63 N344B 8.. 6.. 8 N34B 8.7 6.6 9.. 4 N346B 9. 7. 6.9 9.. N347B 7.6 8.6. 47 N348B. 8.4 8. 43 N349B. 9. 7.. 39 N3B 3. 9.9 7. 36 N3B 4. 7.6 6.7. 34 N3B 7. 7. 6.3. 3 N33B 6 7. 7. 6.3 9 N34B 7 7. 7..9.8.3 8 N3B 8 6. 7. 3.7..4 6 N36B 9 6 3 7. 4.4.3.4 N37B 6 3 7....4 37 N38B 3. 7. 6.7 4.7.4 6 N39B 4 3.. 8. 4.4. 98 N36B 4. 9 4.3. 9 N36B 7..6 4..6 76 N36B 8 6 3.. 3.9.6 7 N363B 3 4 8 4..8 3.7.6 8 N364B 33 4.. 3..6 44 N36B 36 3 6. 7.4 3.3.6 3 N366B 39 3 4 7. 9.7 3..6 N367B 43 3 9. 3.7.8.7 N368B 47. 3.8.7.8 N369B 7 3. 38.8..9 93 N37B 6 3 8. 4.6.3 86 N37B 6 4 3. 4... 79 N37B 6 4 4. 47...3 76 N373B 68 44..7. 7 N374B 7 4 6. 6.9.6 63 N37B 8 6 7. 6..8.8 8 N376B 87 7 76. 66.7 4. N377B 9 7 76. 69..6.. N378B 9 8. 76.. 47. N379B. 83.6.4. 43 N38B 7. 9..3. 39. N38B 3 9. 98.8.. 36.6 N38B 4 8 3. 6.. 34 (continued) str
Dodavatel: GM electronic, spol. s r.o., Křižíkova 77, 86 Praha 8 zákaznická linka: 84 6 7 technický list N333B through N388B ELECTRICAL CHARACTERISTICS continued (TA = C unless otherwise noted, VF =. Max @ IF = A for all types) JEDEC Type No. (Note ) Nominal Zener Voltage VZ @ IZT (Note ) Test IZT Max Zener Impedance ZZT @IZT (Note ) ZZK @ IZK = (Note ) Max Reverse Leakage IR µa @ VR Max Surge ir, Amps (Note 3) Max Voltage Regulation VZ, Volt (Note 4) Maximum Regulator IZM (Note ) N383B 8 33. 4. 3 3.6 N384B 6 8 3 6.. 3 9.4 N38B 7 8 38 7. 9 3 8 N386B 8 43 7. 37 4 6.4 N387B 9 4 8. 44.9 N388B 48 8..9 3.6 NOTE. TOLERANCE AND TYPE NUMBER DESIGNATION The JEDEC type numbers shown indicate a tolerance of ±%. NOTE. ZENER VOLTAGE (V Z ) AND IMPEDANCE (Z ZT & Z ZK ) Test conditions for zener voltage and impedance are as follows: I Z is applied 4 ± ms prior to reading. Mounting contacts are located 3/8 to / from the inside edge of mounting clips to the body of the diode. (T A = C +8, C). NOTE 3. SURGE CURRENT (i r ) Surge current is specified as the maximum allowable peak, non-recurrent square-wave current with a pulse width, PW, of 8.3 ms. The data given in Figure 6 may be used to find the maximum surge current for a square wave of any pulse width between ms and ms by plotting the applicable points on logarithmic paper. Examples of this, using the 3.3 V and V zeners, are shown in Figure 7. Mounting contact located as specified in Note 3. (T A = C +8, C.) NOTE 4. VOLTAGE REGULATION ( V Z ) Test conditions for voltage regulation are as follows: V Z measurements are made at % and then at % of the I Z max value listed in the electrical characteristics table. The test current time duration for each V Z measurement is 4 ± ms. (T A = C +8, C). Mounting contact located as specified in Note. NOTE. MAXIMUM REGULATOR CURRENT (I ZM ) The maximum current shown is based on the maximum voltage of a % type unit, therefore, it applies only to the B-suffix device. The actual I ZM for any device may not exceed the value of watts divided by the actual V Z of the device. T L = 7 C at 3/8 maximum from the device body. NOTE 6. SPECIALS AVAILABLE INCLUDE: Nominal zener voltages between the voltages shown and tighter voltage tolerance such as ±% and ±%. Consult factory. TEMPERATURE COEFFICIENTS θvz, TEMPERATURE COEFFICIENT (mv/ C) @ I ZT 8 6 4 RANGE 3 4 6 7 8 9 VZ, ZENER VOLTAGE @ IZT (VOLTS) Figure. Temperature Coefficient-Range for Units 3 to θvz, TEMPERATURE COEFFICIENT (mv/ C) @ I ZT 3 3 RANGE 4 6 8 4 6 8 VZ, ZENER VOLTAGE @ IZT (VOLTS) Figure 3. Temperature Coefficient-Range for Units to str 3
technický list Dodavatel: GM electronic, spol. s r.o., Křižíkova 77, 86 Praha 8 zákaznická linka: 84 6 7 N333B through N388B θjl (t, D), TRANSIENT THERMAL RESISTANCE JUNCTION-TO-LEAD ( C/W) D =. D =. D =. D =. D =.. D =... NOTE: BELOW. SECOND, THERMAL NOTE: RESPONSE CURVE IS APPLICABLE NOTE: TO ANY LEAD LENGTH (L). DUTY CYCLE, D = t/t SINGLE PULSE TJL = θjl(t)ppk REPETITIVE PULSES TJL = θjl(t, D)PPK.... t, TIME (SECONDS) PPK t t Figure 4. Typical Thermal Response L, Lead Length = 3/8 Inch θ JL, JUNCTION-TO-LEAD THERMAL RESISTANCE ( C/W) 4 3 PRIMARY PATH OF CONDUCTION IS THROUGH THE CATHODE LEAD..4.6.8 L, LEAD LENGTH TO HEAT SINK (INCH) Figure. Typical Thermal Resistance L L i r, PEAK SURGE CURRENT (AMPS) 4 4.4 *SQUARE WAVE PW = ms* PW = ms* PW = 8.3 ms*. PW = ms*. 3 4 6 8 3 4 6 8 NOMINAL VZ (V) Figure 6. Maximum Non-Repetitive Surge versus Nominal Zener Voltage (See Note 3) i r, PEAK SURGE CURRENT (AMPS) 3. VZ = 3.3 V VZ = V. PLOTTED FROM INFORMATION GIVEN IN FIGURE 6. PW, PULSE WIDTH (ms) Figure 7. Peak Surge versus Pulse Width (See Note 3) I Z, ZENER CURRENT () TC = C. 3 4 6 7 8 9 VZ, ZENER VOLTAGE (VOLTS) T = C Figure 8. Zener Voltage versus Zener VZ = 3.3 thru str 4
Dodavatel: GM electronic, spol. s r.o., Křižíkova 77, 86 Praha 8 zákaznická linka: 84 6 7 technický list N333B through N388B T = C I Z, ZENER CURRENT () I Z, ZENER CURRENT (). 3 4 6 7 8 VZ, ZENER VOLTAGE (VOLTS) Figure 9. Zener Voltage versus Zener VZ = thru 7. 8 4 6 8 VZ, ZENER VOLTAGE (VOLTS) Figure. Zener Voltage versus Zener VZ = 8 thru APPLICATION NOTE Since the actual voltage available from a given zener diode is temperature dependent, it is necessary to determine junction temperature under any set of operating conditions in order to calculate its value. The following procedure is recommended: Lead Temperature, TL, should be determined from: TL = θla PD + TA θla is the lead-to-ambient thermal resistance and PD is the power dissipation. Junction Temperature, TJ, may be found from: TJ = TL + TJL TJL is the increase in junction temperature above the lead temperature and may be found from Figure 4 for a train of power pulses or from Figure for dc power. TJL = θjl PD For worst-case design, using expected limits of IZ, limits of PD and the extremes of TJ ( TJ) may be estimated. Changes in voltage, VZ, can then be found from: V = θvz TJ θvz, the zener voltage temperature coefficient, is found from Figures and 3. Under high power-pulse operation, the zener voltage will vary with time and may also be affected significantly by the zener resistance. For best regulation, keep current excursions as low as possible. Data of Figure 4 should not be used to compute surge capability. Surge limitations are given in Figure 6. They are lower than would be expected by considering only junction temperature, as current crowding effects cause temperatures to be extremely high in small spots resulting in device degradation should the limits of Figure 6 be exceeded. str
technický list Dodavatel: GM electronic, spol. s r.o., Křižíkova 77, 86 Praha 8 zákaznická linka: 84 6 7 N333B through N388B Zener Voltage Regulator Diodes Axial Leaded Watt Surmetic 4 B F D K A NOTE:. LEAD DIAMETER & FINISH NOT CONTROLLED WITHIN DIM F. DIM A B D F K INCHES MIN MAX.33.3.3.4.37.43... MILLIMETERS MIN MAX 8.38 8.89 3.3 3.68.94.9.7.4 3.7 K F CASE 7- PLASTIC (Refer to Section for Surface Mount, Thermal Data and Footprint Information.) MULTIPLE PACKAGE QUANTITY (MPQ) REQUIREMENTS Package Option Type No. Suffix MPQ (Units) Tape and Reel Tape and Ammo TA K (Refer to Section for more information on Packaging Specifications.) RL 4K str 6