Fairchild Semiconductor
Zeners
Microsemi Corporation
Silicon 500 mW Zener Diodes
Tak Cheong Electronics (Holdings) Co.,Ltd
500 mW DO-35 Hermetically Sealed Glass Zener Voltage Regulators
Motorola => Freescale
GLASS ZENER DIODES 500 MILLIWATTS 1.8–200 VOLTS
Electronics Industry
ZENER DIODES
Leshan Radio Company
1N9 SERIES ZENER DIODES
Central Semiconductor
SILICON ZENER DIODE 6.8 VOLTS THRU 200 VOLTS 500mW, 5% TOLERANCE