The 1.5SMC91A R7G: DO-214AB (SMC) is a common surface-mount outline for TVS diodes — the cathode bar on the sleeve identifies polarity on the reel, which matters on a single-channel unidirectional part where polarity is non-negotiable. Tape-and-reel packaging at this body size is compatible with standard SMT pick-and-place; verify the land pattern against the manufacturer footprint drawing before committing to layout since the exposed pad and solder-thermic interface are the dominant thermal path from junction to board copper.
1.5SMC91A R7G TVS Diode, 1.5kW 125V Clamping
MPN1.5SMC91A R7G
Active
Taiwan Semiconductor Corporation, 1.5SMC series, unidirectional Zener TVS diode, 1.5SMC91A R7G, 77.8V standoff, 86.5V min breakdown, 125V clamping @ 12.6A, 1.5 kW peak pulse, DO-214AB SMC, surface mount, -55°C to 150°C junction.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMC |
| Mounting | Surface Mount |
| Voltage - breakdown | 86.5V |
| Voltage - clamping (Max) @ ipp | 125V |
| Voltage - reverse standoff | 77.8V |
| Current - peak pulse (10/1000μs) | 12.6A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -55°C~150°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | General Purpose |
| Case | DO-214AB, SMC |
| Unidirectional channels | 1 |
Product details
Frequently asked questions
What is 1.5SMC91A R7G used for?
It is a unidirectional Zener-type TVS diode — it clamps voltage transients on a DC rail, protecting downstream circuitry from surge events. The general-purpose rating covers industrial, telecom, and consumer equipment where the standoff voltage fits the rail design.