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P.O. BOX 609 • ROCKPORT, MAINE 04856 • 207-236-6076 • FAX 207-236-9558
LOW LEVEL ZENER DIODES
SHARP KNEE, LOW IMPEDANCE
K511 - K681
•• Unique manufacturing process
•• Remarkably sharp breaking diodes
•• Very low impedances at low current levels
•• Lowest values of impedance ever achieved at the 250uA level
NOMINAL DYNAMIC IMPEDANCE REVERSE CURRENT
PART ZENER VOLTAGE MAX Zz MAX Zzk @ 25° C
NUMBER @ Iz = 250µA @ Iz = 250 µA @ Iz = 1 mA MAX Ir Vr
(Vdc) (OHMS) (OHMS) (µA) (Vdc)
K511 5.1 50 15 .05 2.5
K561 5.6 45 15 .05 3.5
K621 6.2 35 18 .05 5.6
K681 6.8 25 18 .05 6.4
Package Style DO-7
DC Power Dissipation @ Ta = 50° C 250 mW
Derate above 50° C 2 mW / °C
Forward Voltage Drop @ If = 100 mA 1.3 Vdc
Operating Temperature (Topr) -65 to + 175° C
Storage Temperature (Tstg) -65 to + 200° C
Voltage Tolerance: Standard Device ±10%
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