5PCS New original B0503S-1W B0503S 1W DC-DC step-down power supply 5V to 3.3V dcdc isolated power supply

5PCS New original B0503S-1W B0503S 1W DC-DC step-down power supply 5V to 3.3V dcdc isolated power supply
sku: 33019456979
$4.24-1%
$4.20
Shipping from: China
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