TBU-CX050-VTC-WH Equivalent & Substitute Parts

Part Overview

The TBU-CX050-VTC-WH is a surface mount surge suppressor from Bourns Inc.'s TBU® series, designed for circuit protection in general purpose applications. This part features internal switch technology with a 500V clamping voltage and 250V working voltage rating. The product is currently obsolete, making equivalent substitute parts necessary for ongoing design support and component sourcing.

Substiute Parts

TBU-CX050-VTC-WH

Bourns Inc.In Stock: 3350TBU-CX050-VTC-WH Datasheet

Current PartRFQ

TBU-CA050-050-WH

Bourns Inc.In Stock: 3042TBU-CA050-050-WH Datasheet

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TBU-CA050-100-WH

Bourns Inc.In Stock: 21715TBU-CA050-100-WH Datasheet

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TBU-CA050-200-WH

Bourns Inc.In Stock: 4042TBU-CA050-200-WH Datasheet

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TBU-CA050-300-WH

Bourns Inc.In Stock: 3073TBU-CA050-300-WH Datasheet

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TBU-CA050-500-WH

Bourns Inc.In Stock: 10187TBU-CA050-500-WH Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TBU-CX050-VTC-WH is determined by the following critical parameters:

• Voltage Rating Match: All substitute parts maintain the same 500V clamping voltage and 250V working voltage
• Technology Consistency: All substitutes use internal switch technology
• Series Alignment: All substitutes belong to the TBU® series from Bourns Inc.
• Mounting Configuration: All substitutes are surface mount devices
• Compliance Requirements: All substitutes maintain ROHS3 compliance and REACH unaffected status
• Current Rating Variation: Substitute parts differ in current handling capacity (50mA, 100mA, 200mA, 300mA, 500mA), allowing selection based on circuit protection requirements

The primary distinction between the main part and substitutes is the number of circuits: the TBU-CX050-VTC-WH provides 2 circuits, while all listed substitutes provide 1 circuit each. Package dimensions also vary between the main part (4.00mm x 8.25mm) and substitutes (6.50mm x 4.00mm).

Parameter Comparison

Engineering Selection Recommendations

The TBU-CX050-VTC-WH is obsolete and no longer in production. All listed substitute parts are active products from Bourns Inc., ensuring long-term availability and supply chain continuity.

Selection among the substitute parts should be based on circuit current requirements:

• TBU-CA050-050-WH: 50mA rated current
• TBU-CA050-100-WH: 100mA rated current
• TBU-CA050-200-WH: 200mA rated current
• TBU-CA050-300-WH: 300mA rated current
• TBU-CA050-500-WH: 500mA rated current

All substitutes maintain identical voltage ratings (500V clamping, 250V working), internal switch technology, and ROHS3 compliance. The primary design consideration is matching the current rating to circuit protection requirements. Package dimensions differ from the original part, requiring PCB layout verification during substitution.

Frequently Asked Questions (FAQ)

Q: Can TBU-CA050 series parts directly replace the TBU-CX050-VTC-WH?

A: Electrical substitution is valid based on matching voltage ratings and internal switch technology. However, the TBU-CA050 series provides single-circuit protection versus the dual-circuit configuration of the original part. PCB layout changes are required due to different package dimensions (6.50mm x 4.00mm versus 4.00mm x 8.25mm).

Q: How do I select the correct current rating among the substitute parts?

A: Choose the substitute part with a current rating that matches or exceeds your circuit protection requirement. The available ratings are 50mA, 100mA, 200mA, 300mA, and 500mA. All maintain the same voltage protection characteristics.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of the original TBU-CX050-VTC-WH.

Q: What is the difference between packaging options for substitute parts?

A: Substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. This affects procurement and assembly processes but does not impact electrical performance or compatibility.

Q: Are there inventory considerations when selecting a substitute?

A: All substitute parts maintain active production status with available inventory. Current stock levels range from 3,014 to 21,649 units across the substitute options, providing supply flexibility for design requirements.