SMAJ130A

SMAJ130A is a surface-mount transient voltage suppressor (TVS) diode in an SMA package used to protect circuits from voltage spikes. It remains nonconductive during normal operation, and clamps/redirects surge energy when the voltage exceeds its standoff threshold, protecting power rails and I/O.
Key points:
- Variant of the SMAJ family (unidirectional and/or bidirectional versions may be available) with a nominal standoff around 130 V; check the exact VRWM, VBR, and clamping specs in the datasheet.
- Designed to absorb surge energy (peak pulse power rating) and limit voltages on high-voltage lines (e.g., DC buses, telecom, automotive, power adapters).
- Typical considerations: VRWM matching to the protected circuit’s normal voltage, clamping voltage, energy rating (Ppp), leakage, and operating temperature.
Note: SMAJ130A is not a regulator or zener device—it only clamps transients to protect downstream circuitry. Always consult the specific datasheet for variant values and ratings.

Equivalent products are other 600 W peak-power TVS diodes with about 130 V standoff. Cross-references include:
- SMBJ130A (same rating, SMB package) from major vendors (Littelfuse, Vishay, ON Semiconductor, ProTek)
- SMAJ130A variants from other manufacturers (if available)
In short, any 130 V, ~600 W TVS diode from a known supplier can substitute; match package and polarity.

Key features of SMAJ130A:
- Unidirectional TVS diode in SMA (DO-214AC) package
- VRWM (working stand-off) = 130 V
- Peak pulse power: 600 W (10/1000 µs)
- Very fast response time: typically < 1 ns
- Wide operating temperature: -55°C to +125°C
- Pb-free, RoHS compliant; rugged molded housing
- Suitable for protecting power rails, I/O lines, and data/telecom circuits from transient surges and ESD
- High surge capability for automotive, industrial, and communications applications

- Pin count: 2 pins (anode and cathode; cathode usually marked).
- Function: Unidirectional TVS diode in an SMA (DO-214AC) package used for transient surge protection; clamps high-voltage transients on lines (rated for ~130 V standoff with about 1.5 kW peak pulse power).

- Manufacturer: Littelfuse, Inc.
- What kind of company: A global electronics components company specializing in circuit protection (fuses, TVS diodes, ESD protection, gas discharge tubes, etc.) and related power-control solutions.

- Mains input and DC bus surge protection in power supplies, adapters, and consumer electronics (up to ~130 V working range).
- Automotive and industrial electronics (battery packs, motor drives, inverters, solar inverters) for transient suppression.
- Telecom and data equipment power rails and line interfaces requiring high-energy surge protection.
- High-voltage signal/I/O interfaces needing ESD and transient protection.

SMAJ130A is a TVS diode in the SMA package (DO-214AA), a small surface-mount package.