EMH4 / UMH4N / IMH4A NPN 100mA 50V Complex Digital Transistors (Bias Resistor Built-in Transistors) is a digital complex transistor product launched by ROHM. This product has built-in bias resistors, two DTC114T chips in one package, no need to connect external input resistors, completely isolated thin-film resistors, eliminate parasitic effects, only need to set on/off conditions to operate, etc.
The EMB3, UMB3N, and IMB3A are PNP complex digital transistors with built‑in bias resistors, offered in compact SOT‑353 and SOT‑457 packages. They are lead‑free and RoHS compliant, making them suitable for a variety of inverter, interface, and driver circuits.
The datasheet lists absolute maximum ratings, typical electrical characteristics, and detailed package dimensions for each part number, along with application notes and safety warnings.
| Power dissipation (EMB3 / UMB3N) | 150 mW |
|---|---|
| Junction temperature (Tj) | 150 °C |
| Storage temperature range | -55 °C to +150 °C |
| Input resistance | 3.29 kΩ (typical) |
| RoHS compliance | Lead‑free / RoHS compliant |
| Package (UMB3N) | SOT‑457 (SC‑74) |
Yes, they are lead‑free and RoHS compliant.
They can be stored from –55 °C up to +150 °C.