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SMC30J18A SMC30J18A is a 3000W Zener TVS diode from STMicroelectronics with 18V reverse standoff voltage and 29.2V clamping voltage in a DO-214AB SMC package.
Mfr Part #:

SMC30J18A

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
SMC30J18A is a 3000W Zener TVS diode from STMicroelectronics with 18V reverse standoff voltage and 29.2V clamping voltage in a DO-214AB SMC package.
✓ Total Stock: 7,500 pcs
$ Price Range: $0.46 - $1.27

SMC30J18A Available from 1 distributor

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✓ Non-Authorised
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7,500 pcs
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7500 pcs On Request 1 On Request On Request On Request On Request On Request
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SMC30J18A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage
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SMC30J18A Description

Short technical summary and product information.

The SMC30J18A is a 3000W peak pulse power Zener TVS diode designed by STMicroelectronics for general purpose transient voltage suppression. It features a reverse standoff voltage of 18V and a maximum clamping voltage of 29.2V at a peak pulse current of 103A (10/1000µs waveform).

 

This unidirectional device is housed in a surface-mount DO-214AB (SMC) package, suitable for automated assembly. It operates over a junction temperature range of -55°C to 175°C, making it robust for demanding environments. The part does not include power line protection, indicating it is intended for signal line or low-voltage bus protection.

 

Typical applications include protecting sensitive electronics from voltage transients induced by lightning, inductive load switching, or ESD events. The SMC30J18A is RoHS3 compliant and has an MSL of 1 (unlimited floor life).

SMC30J18A Quick Information

Product Type: TVS Diode
Canonical Name: SMC30J18A TVS Diode
Subcategory: Zener Clamping

SMC30J18A Compliance

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

SMC30J18A Estimated Pricing

Qty Low High
1+ $1.27 $1.27
10+ $1.06 $1.06
100+ $0.77 $0.77
500+ $0.62 $0.62
1,000+ $0.57 $0.57
2,500+ $0.53 $0.53
5,000+ $0.48 $0.48
10,000+ $0.46 $0.46

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

SMC30J18A Features

  • 3000W peak pulse power dissipation.
  • 18V reverse standoff voltage.
  • 29.2V maximum clamping voltage.
  • Surface mount DO-214AB SMC package.
  • Unidirectional Zener TVS protection.

SMC30J18A Applications

  • Protects sensitive electronics from voltage transients.
  • Used in general purpose circuit protection.
  • Suitable for surface mount PCB assembly.
  • Ideal for low-voltage bus protection.

SMC30J18A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SMC30J18A?

The reverse standoff voltage (typical) is 18 V.

What is the clamping voltage of the SMC30J18A?

The maximum clamping voltage at peak pulse current is 29.2 V.

What is the peak pulse current rating?

The peak pulse current (10/1000µs) is 103 A.

What is the peak pulse power rating?

The peak pulse power is 3000 W (3 kW).

What package does the SMC30J18A come in?

The device is housed in a DO-214AB, SMC surface mount package.

What is the operating temperature range?

The operating junction temperature range is -55°C to 175°C.

Is the SMC30J18A RoHS compliant?

The part is listed as RoHS3 Compliant (unverified).

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