The document describes a device with bidirectional applications, suitable for types 1.5KE6.8 through 1.5KE440. It has an extended voltage range and high peak power dissipation capability.
The 1.5KE series of silicon transient suppressors from Vishay are designed for protecting circuits from high‑energy voltage spikes. They are available in both unidirectional (‑V) and bidirectional (‑V(BR)) versions, covering breakdown voltages from 6.8 V to 540 V and supporting peak pulse powers of 1500 W.
Key specifications include a peak pulse current of 200 A (8.3 ms half‑sine), steady‑state dissipation of 6.5 W, junction‑to‑lead thermal resistance of 20 °C/W, and an operating temperature range of –55 °C to +175 °C. The devices meet UL safety standard 497B and are supplied in various bulk packaging options.
| Peak Pulse Power | 1500 W |
|---|---|
| Peak Pulse Current | 200 A (8.3 ms half‑sine) |
| Steady‑State Power Dissipation | 6.5 W |
| Junction‑to‑Lead Thermal Resistance | 20 °C/W |
| Operating Temperature Range | –55 °C to +175 °C |
| UL Safety Standard | UL 497B |
| Breakdown Voltage (example part 1N6267) | 6.12 V – 7.48 V |
The series is rated for 1500 W peak pulse power on a 10/1000 µs waveform.
They are recognized under UL safety standard 497B.
The maximum forward surge current is 200 A for an 8.3 ms half‑sine pulse.
Packaging codes include 51 – 1 K per bulk box, 10 K per carton, 54 – 1.4 K per 13" paper reel, and 73 – 1 K per horiz. tape & ammo box.