• 1N935BUR-1, 1N937BUR-1 and 1N938BUR-1 AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/156 • TEMPERATURE COMPENSATED ZENER REFERENCE DIODES • LEADLESS PACKAGE FOR SURFACE MOUNT • 9.0 VOLT NOMINAL ZENER VOLTAGE • METALLURGICALLY BONDED, DOUBLE PLUG CONSTRUCTION
1N935BUR-1 thru 1N938BUR-1 and CDLL935 thru CDLL938B
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C DC Power Dissipation: 500mW @ +50°C Power Derating: 4 mW / °C above +50°C
REVERSE LEAKAGE CURRENT
l
R
= 10 µA @ 25°C & VR = 6 Vdc
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
DIM D F G G1 S
CDI TYPE NUMBER
ZENER VOLTAGE VZ@ I ZT
ZENER TEST CURRENT I ZT
MAXIMUM VOLTAGE TEMPERATURE ZENER TEMPERATURE RANGE IMPEDANCE STABILITY ZZT ∆V ZT MAXIMUM (Note 1) (Note 2) mV 67 139 184 34 70 92 13 28 37 6.7 13.9 19 °C 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150
EFFECTIVE TEMPERATURE COEFFICIENT
MILLIMETERS INCHES MIN MAX MIN MAX 1.60 1.70 0.063 0.067 0.41 0.55 0.016 0.022 3.30 3.70 .130 .146 2.54 REF. .100 REF. 0.03 MIN. .001 MIN.
VOLTS CDLL935 CDLL935A CDLL935B CDLL936 CDLL936A CDLL936B CDLL937 CDLL937A CDLL937B CDLL938 CDLL938A CDLL938B 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45 8.55 - 9.45
mA 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5
OHMS 20 20 20 20 20 20 20 20 20 20 20 20
% / °C 0.01 0.01 0.01 0.005 0.005 0.005 0.002 0.002 0.002 0.001 0.001 0.001
FIGURE 1
DESIGN DATA
CASE: DO-213AA, Hermetically sealed glass case. (MELF, SOD-80, LL34) LEAD FINISH: Tin / Lead POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any. MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) Of this Device is Approximately +6PPM/°C. The COE of the Mounting Surface System Should Be Selected To Provide A Suitable Match With This Device.
NOTE 1
Zener impedance is derived by superimposing on lZTA 60Hz rms a.c. current equal to 10% of lZT. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV at any discrete temperature between the established limits, per JEDEC standard No.5.
NOTE 2
22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail:
[email protected]
Pd, Rated Power Dissipation (mW)
CDLL935
thru
600 500 400 300 200 100 0 0 25 50 75 100 125 150 175 TL, Ambient temperature (°C)
CDLL938B
FIGURE 2
POWER DERATING CURVE
100 50 40 30 20
ZENER IMPEDANCE ZZT (OHMS)
10 5 4 3 2 1 5 6 7 8 9 OPERATING CURRENT lZT (mA) 10
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
+.0015 CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
+.0010
+.0005
0
-.0005
-.0010
-.0015 5 6 7 8 OPERATING CURRENT lZT (mA) 9 10
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WIT.