The HMA121B is a 4-pin mini-flat package optocoupler consisting of a gallium arsenide infrared emitting diode and a silicon phototransistor, with a lead pitch of 2.54 mm. It has a collector-emitter voltage rating of 80 V, a continuous collector current of 80 mA, and a DC current transfer ratio between 50% and 150% at I_F = 5 mA and V_CE = 5 V. It provides 3750 V RMS isolation, with creepage and clearance of at least 5 mm. The device is certified by BSI, CSA, UL, and VDE, and supports infrared reflow soldering up to 230°C for 30 seconds. Operating temperature range is from -40°C to +100°C.
1-CH DC Optocoupler, 80V VCEO, 80mA IC, 3.75kV Isolation, SMD Product overview: HMA121B 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, 80mA, 3.75kV. Search-friendly keywords include transistor, BJT, switching, amplification, SMD, 80V, 80mA, 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-HMA121B can be used for catalog matching and distributor lookup.
| ERSAELECTRONICS PTE. LTD. | |
|---|---|
| Product Category | Bipolar RF Transistors |
| Product Number | 903-HMA121B |
| Product Name | SMD 80V 80mA 3.75kV Bipolar Transistor |
| IC(max) | 80 milliamps |
