SMAJ5.0A-TR,CA-TR SMAJ188A-TR,CA-TR series TRANSILTM® high performance protection diodes, with a maximum 400W peak pulse power (10/1000µs) and a blocking voltage range from 5V to 188V. This series has a low clamping factor and fast response time, suitable for a variety of applications, such as overvoltage protection of sensitive equipment.
The SMAJ series TRANSIL™ diodes are designed to protect sensitive equipment from transient over‑voltages. They feature a peak pulse power of 400 W, a wide stand‑off voltage range from 5 V to 188 V, and are available in both unidirectional and bidirectional types. The devices are supplied in a JEDEC‑registered SMA surface‑mount package that saves board space.
Key specifications include a maximum junction temperature of 150 °C, storage temperature range of –65 °C to +175 °C, and thermal resistance values of 30 °C/W (junction‑to‑leads) and 120 °C/W (junction‑to‑ambient). Packaging is provided as tape‑and‑reel for automated assembly, and the part markings identify the type and cathode band for unidirectional versions.
| Peak pulse power | 400 W (10/1000 µs) |
|---|---|
| Stand‑off voltage range | 5 V to 188 V |
| Maximum junction temperature (Tj) | 150 °C |
| Storage temperature range | -65 °C to +175 °C |
| Lead temperature for soldering (10 s) | 260 °C |
| Junction‑to‑leads thermal resistance | 30 °C/W |
| Junction‑to‑ambient thermal resistance (recommended pad) | 120 °C/W |
| Package type | SMA surface‑mount (plastic) |
| Packaging | Tape & reel |
The diodes can handle a peak pulse power of 400 W for a 10 µs / 1000 µs pulse.
They provide a stand‑off voltage from 5 V up to 188 V.
The maximum junction temperature is specified as 150 °C.
The diodes are supplied in surface‑mount tape and reel format.