onsemi 1.91 (Dia.) x 4.56mm Simple 200mA 1.2V 1N5221B +200 °C 500 mW 100μA 1200 Ω @ 0.25, 30 Ω @ 20 mA -65 °C

1N5221B: Zener 2.4V 0.5W 5%

General Data Applicable to all series in this group.
500 Milliwatt
Hermetically Sealed
Glass Silicon Zener Diodes
Complete Voltage Range - 1.8 to 200 Volts
DO-204AH Package - Smaller than Conventional DO-204AA Package
Double Slug Type Construction
Metallurgically Bonded Construction
Mechanical Characteristics:
CASE: Double slug type, hermetically sealed glass
MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 230?C, 1/16", from case for 10 seconds
FINISH: All external surfaces are corrosion resistant with readily solderable leads
POLARITY: Cathode indicated by color band. When operated in zener mode, cathode will be positive with respect to anode
MOUNTING POSITION: Any
WAFER FAB LOCATION: Phoenix, Arizona
ASSEMBLY/TEST LOCATION: Seoul, Korea