P4SMA18A P4SMA18A is a 400W unidirectional TVS diode from On Semiconductor with a reverse standoff voltage of 15.3V, breakdown voltage range of 17.1V-18.9V, and clamping voltage of 25.5V. It is surface-mount in DO-214AC (SMA) package.
Mfr Part #:

P4SMA18A

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
P4SMA18A is a 400W unidirectional TVS diode from On Semiconductor with a reverse standoff voltage of 15.3V, breakdown voltage range of 17.1V-18.9V, and clamping voltage of 25.5V. It is surface-mount in DO-214AC (SMA) package.
Total Stock: 765 pcs
$ Price Range: $0.11 - $0.70

P4SMA18A Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
765 pcs
765 pcs On Request 1 On Request On Request On Request On Request 2026-05-08 07:15:33

P4SMA18A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Breakdown Voltage (Minimum/Maximum)
Current
Halogen Free
Mounting Type
Operating Temperature
Power
Power Line Protection
Storage Temperature
Supplier Device Package
Type
Unidirectional Channels
Voltage
Voltage - Clamping (Max) @ Ipp

P4SMA18A Description

Short technical summary and product information.

The P4SMA18A is a 400W unidirectional TVS (Transient Voltage Suppression) diode designed to protect sensitive electronic circuits from voltage transients induced by lightning and other transient events. It is part of the P4SMA series from On Semiconductor.

 

Key electrical characteristics include a reverse standoff voltage of 15.3V, a minimum breakdown voltage of 17.1V, and a maximum clamping voltage of 25.5V at a peak pulse current of 15.9A (10/1000µs waveform). The diode offers a peak pulse power of 400W. It is not intended for power line protection.

 

The device is supplied in a DO-214AC (SMA) surface-mount package, with a moisture sensitivity level of 1 (unlimited). It is halogen-free and RoHS compliant (Pb-free E3 terminal finish). Operating temperature range is -65°C to 150°C.

P4SMA18A Quick Information

Product Type: TVS Diode
Series: P4SMA
Canonical Name: P4SMA18A Unidirectional TVS Diode, 400W, 15.3V Standoff, DO-214AC
Subcategory: Unidirectional TVS Diode

P4SMA18A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

P4SMA18A Estimated Pricing

Qty Low High
1+ $0.70 $0.70
10+ $0.43 $0.43
100+ $0.28 $0.28
500+ $0.21 $0.21
1,000+ $0.19 $0.19
2,000+ $0.17 $0.17
5,000+ $0.12 $0.12
10,000+ $0.11 $0.11
15,000+ $0.11 $0.11
25,000+ $0.11 $0.11

Estimated market price range - modelled values for guidance only, not live distributor offers.

P4SMA18A Features

  • 400W peak pulse power at 10/1000µs.
  • Unidirectional TVS protection diode.
  • 15.3V reverse standoff voltage.
  • Surface mount DO-214AC (SMA) package.
  • RoHS compliant and halogen-free.

P4SMA18A Applications

  • Protects sensitive electronics from voltage transients.
  • General purpose transient voltage suppression.
  • Suitable for surface-mount circuit designs.

P4SMA18A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the P4SMA18A?

15.3V

What is the breakdown voltage range?

17.1V to 18.9V

What is the clamping voltage?

25.5V at 15.9A peak pulse current

What is the peak pulse current rating?

15.9A at 10/1000µs waveform

What package is the P4SMA18A available in?

DO-214AC (SMA) surface-mount package

What is the operating temperature range?

-65°C to 150°C

Is the P4SMA18A RoHS compliant?

Yes, RoHS3 compliant with Pb-free E3 terminal finish

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