onsemi Optoisolators - Transistor, Photovoltaic Output - HMA121 HMA121

Manufacturer: ON Semiconductor
Win Source Part Number: 1181052-HMA121
Packaging: Tube
Mounting Style: SMD
Output Type: Transistor
Input Type: DC
Current - Output / Channel: 80mA
Voltage - Isolation: 3750Vrms
Categories: Isolators
Supplier Device Package: 4-SMD
Status: Obsolete
Temperature Range - Operating: -40°C ~ 100°C
Maximum Output Voltage: 80V
Manufacturer Homepage: www.fairchildsemi.com
Manufacturer Package: 4-SMD, Gull Wing
Current - DC Forward (If) (Maximum): 50mA
Current Transfer Ratio (Minimum): 50% at 5mA
Current Transfer Ratio (Maximum): 600% at 5mA
Vce Saturation (Maximum): 400mV
Popularity: Medium
Fake Threat In the Open Market: 55 pct.
Supply and Demand Status: Limited
Manufacturer Pack Quantity: 3,000
MSL Level: 1 (Unlimited)
Rise / Fall Time: 3μs, 3μs
Voltage - Forward (Vf): 1.3V (Maximum)

1-Ch Transistor Optocoupler, 80V VCEO, 600% CTR, 3.75kV Isolation, SMD Product overview: HMA121 from onsemi is a Bipolar Transistor for signal amplification, switching, driver stages, discrete power control, and general electronic circuit design. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include SMD, 80V, 3.75kV. Search-friendly keywords include transistor, BJT, switching, amplification, SMD, 80V, 3.75kV, Bipolar Transistor, Transistor, Photovoltaic Output Optoisolators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 903-HMA121 can be used for catalog matching and distributor lookup.