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SMBJ120A The SMBJ120A is a 600W unidirectional TVS diode from Littelfuse Inc. It features a 120V reverse standoff voltage and 193V clamping voltage in a surface-mount DO-214AA (SMBJ) package.
Mfr Part #:

SMBJ120A

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The SMBJ120A is a 600W unidirectional TVS diode from Littelfuse Inc. It features a 120V reverse standoff voltage and 193V clamping voltage in a surface-mount DO-214AA (SMBJ) package.
✓ Total Stock: 10,000 pcs
$ Price Range: $0.08 - $0.54

SMBJ120A Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Risen Electronics ✓
Non-Authorised Inventory information
10,000 pcs
On Request
10000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SMBJ120A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Halogen Free
Mounting Type
Operating Temperature
Power
Power Line Protection
Storage Temperature
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage
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SMBJ120A Description

Short technical summary and product information.

The SMBJ120A is a 600W unidirectional TVS diode from Littelfuse Inc., designed to protect sensitive electronic equipment from voltage transients. It offers a reverse standoff voltage of 120V and a maximum clamping voltage of 193V at a peak pulse current of 3.1A (10/1000µs waveform). The device features a fast response time of less than 1.0ps from 0V to breakdown voltage.

 

This TVS diode is suitable for general-purpose applications including I/O interfaces, VCC bus, and other vulnerable circuits in telecom, computer, industrial, and consumer electronics. It is surface-mountable in a DO-214AA (SMBJ) package and operates over a temperature range of -65°C to 150°C.

 

The SMBJ120A is RoHS compliant, halogen free, and has a Pb-free E3 terminal finish with matte tin lead-free plating. It meets MSL level 1 per J-STD-020 and is UL recognized for data communications and fire-alarm circuit protection.

SMBJ120A Quick Information

Product Type: TVS Diode
Series: SMBJ
Canonical Name: SMBJ120A TVS Diode, 600W, Unidirectional, 120V Reverse Standoff, DO-214AA (SMBJ)
Subcategory: Unidirectional TVS Diode

SMBJ120A Compliance

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

SMBJ120A Estimated Pricing

Qty Low High
1+ $0.54 $0.54
10+ $0.33 $0.33
100+ $0.21 $0.21
500+ $0.16 $0.16
1,000+ $0.14 $0.14
3,000+ $0.10 $0.10
6,000+ $0.09 $0.09
9,000+ $0.09 $0.09
15,000+ $0.08 $0.08
21,000+ $0.08 $0.08
30,000+ $0.08 $0.08

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

SMBJ120A Features

  • 600W peak pulse power capability.
  • 120V reverse standoff voltage rating.
  • 193V maximum clamping voltage.
  • Fast response time under 1.0ps.
  • Surface-mount DO-214AA (SMBJ) package.

SMBJ120A Applications

  • Protects I/O interfaces from voltage transients.
  • Ideal for VCC bus protection circuits.
  • Used in telecom and computer equipment.
  • Suitable for industrial and consumer electronics.

SMBJ120A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SMBJ120A?

The reverse standoff voltage is 120V.

What is the clamping voltage of the SMBJ120A?

The maximum clamping voltage is 193V at 3.1A peak pulse current.

What is the peak pulse power rating of the SMBJ120A?

The peak pulse power is 600W for a 10/1000µs waveform.

What package does the SMBJ120A come in?

It comes in a surface-mount DO-214AA (SMBJ) package.

Is the SMBJ120A RoHS compliant?

Yes, it is RoHS compliant and halogen free with Pb-free E3 terminal finish.

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