C850-180-WH Equivalent & Substitute Parts

Part Overview

The C850-180-WH is a surge suppressor from Bourns Inc.'s TBU® series, designed for circuit protection in general-purpose applications. This component features an internal switch technology with a 180mA current rating and 850V impulse voltage specification. The part is currently discontinued at DiGi Electronics, making identification of compatible alternatives essential for ongoing system support and procurement planning.

Substiute Parts

C850-180-WH

Bourns Inc.In Stock: 3378C850-180-WH Datasheet

Current PartRFQ

TBU-CA085-200-WH

Bourns Inc.In Stock: 6267TBU-CA085-200-WH Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The TBU-CA085-200-WH qualifies as a direct substitute based on the following alignment of critical parameters:

Matching criteria: Same manufacturer (Bourns Inc.), identical series (TBU®), matching voltage specifications (850V impulse, 425V working), identical technology (Internal Switch), single circuit configuration, surface mount assembly, and equivalent RoHS3 compliance status.

Allowable variation: Current rating increases from 180mA to 200mA. This represents a higher current capacity within the same product family and voltage class, making it suitable for applications requiring equal or lower current protection thresholds.

Parameter Comparison

Engineering Selection Recommendations

The TBU-CA085-200-WH is the direct substitute for the discontinued C850-180-WH. Both components maintain identical voltage protection specifications and internal switch technology, ensuring functional equivalence in circuit protection applications.

The substitute part offers improved moisture sensitivity characteristics (MSL 1 versus MSL 3), providing enhanced reliability in storage and handling environments. The higher current rating (200mA versus 180mA) does not compromise compatibility, as it provides equal or greater protection capacity for circuits designed around the original 180mA specification.

The substitute part maintains active product status with Bourns Inc., ensuring long-term availability and supply chain continuity. Both components carry equivalent ROHS3 compliance and REACH unaffected certifications.

Frequently Asked Questions (FAQ)

Q: Can TBU-CA085-200-WH directly replace C850-180-WH in existing designs?

A: Yes. Both components share identical voltage specifications (850V impulse, 425V working), internal switch technology, single-circuit configuration, and surface mount assembly. The higher current rating of the substitute part does not create compatibility issues for applications designed around the original 180mA specification.

Q: What is the significance of the current rating difference?

A: The substitute part's 200mA rating represents increased current capacity within the same voltage class. This allows the component to handle equal or higher current levels while maintaining the same protection threshold. For circuits requiring 180mA or less, the substitute operates within its rated capacity.

Q: How do the moisture sensitivity levels affect component selection?

A: The substitute part's MSL 1 rating (unlimited storage) provides superior moisture resistance compared to the original part's MSL 3 rating (168-hour limit). This improves handling flexibility and reduces risk during storage and assembly processes.

Q: Are there package differences between these components?

A: The original part specifies 3-SMD, No Lead packaging. The substitute part uses SMD 6.50mm x 4.00mm packaging. Both are surface mount configurations suitable for automated assembly. Physical dimensions should be verified against PCB layout requirements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory compliance for industrial and commercial applications.