P6SMB36A

P6SMB36A is a 600 W peak pulse power TVS diode in an SMB package. The “A” suffix indicates a unidirectional device with a nominal stand-off voltage around 36 V.
What it does:
- Protects DC power lines and signal lines from transient overvoltage (ESD, load dumps, inductive spikes, switching transients).
How to use:
- Placed across the line to ground (cathode to the protected line, anode to ground).
Key specs you’ll care about:
- Vwm (stand-off voltage): ~36 V
- Vbr and Vclamp: depend on pulse current and are specified in the datasheet
- IPP: 600 W peak pulse power
- Temperature range and package footprint per datasheet
Selection tips:
- Choose a part with Vwm above your normal operating voltage but below the circuit’s stress, and ensure adequate clamping for fault conditions.
- Place close to the entry point of the protected circuit.
Applications:
- Automotive, industrial 24–28 V rails, telecom, power-supply protection, and other transient-prone electronics.
For exact values (Vbr, Vclamp, leakage, footprint), consult the manufacturer’s datasheet.

Equivalent parts (36 V standoff, 600 W SMB TVS) include:
- Vishay: SMBJ36A (unidirectional)
- ON Semiconductor: SMBJ36A
- Littelfuse: P6SMB36A (same device cross-reference)
Note: Verify polarity (unidirectional vs bidirectional) and packaging when substituting.

P6SMB36A Features:
- 600 W peak pulse power (10/1000 μs) per device
- Unidirectional TVS diode in SMB package (surface-mount)
- VRWM (reverse standoff) = 36 V
- Very fast transient protection for power rails and I/O lines
- Low leakage in normal operation
- Wide operating temperature: typically -55°C to +125°C
- RoHS compliant, Pb-free
- Suitable for automated SMT assembly (reflow) and tape/ reel packaging

- Pin count: 2 (two-terminal device)
- Function: 600 W unidirectional TVS diode in SMB package with ~36 V stand-off, used to clamp transient surges and protect circuits (cathode to the protected line, anode to ground).

- Manufacturer: Littelfuse.
- What kind of company: A global electronics components company specializing in circuit protection and safety devices, such as fuses, TVS diodes (like P6SMB series), and ESD protectors, with headquarters in Chicago and operations worldwide.

P6SMB36A is a 600W (peak) unidirectional TVS diode for transient/surge protection. Typical use areas:
- Protection of 28–36V DC power rails
- Automotive electronics (12/24V systems, load-dump transients)
- Power supplies and DC-DC converters
- Telecom/data lines requiring surge protection
- Industrial controls and instrumentation
- Consumer electronics needing transient/ESD protection

SMB package (DO-214AB).