16VT170U Polymeric PTC Resettable Fuse - Equivalent & Substitute Parts

Part Overview

The 16VT170U is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. under the POLY-FUSE® VT series. This component is designed for overcurrent protection applications requiring a 16V maximum voltage rating with a 1.7A hold current. The device features a strap mounting configuration and operates across a temperature range of -40°C to 85°C.

The 16VT170U has reached obsolete product status. Identifying qualified substitute components ensures design continuity and maintains supply chain reliability for applications currently utilizing this part.

Substiute Parts

16VT170U

Littelfuse Inc.In Stock: 76616VT170U Datasheet

Current PartRFQ

MF-VS170-0

Bourns Inc.In Stock: 3078MF-VS170-0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 16VT170U is determined by the following critical parameters:

• Voltage rating must equal or exceed 16V maximum
• Current hold (Ih) rating must match 1.7A
• Current trip (It) rating must match 3.4A
• Maximum current capacity must be 100A or greater
• Time to trip must be 3 seconds
• Initial resistance (Ri) minimum must be 30 mOhms or lower
• Post-trip resistance (R1) maximum must not exceed 105 mOhms
• Operating temperature range must encompass -40°C to 85°C
• Package type must be strap configuration
• Component type must be polymeric PTC resettable fuse

The MF-VS170-0 manufactured by Bourns Inc. meets all specified electrical and mechanical parameters for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The MF-VS170-0 from Bourns Inc. is the qualified substitute for the obsolete 16VT170U. This component maintains active product status, ensuring ongoing availability and manufacturer support. Both components carry ROHS3 compliance and cURus/TUV approval certifications, meeting regulatory requirements for equivalent applications.

The MF-VS170-0 is available in bulk packaging with 3020 units in stock, providing supply security for production requirements. Physical dimensions differ slightly (17.00mm L x 5.20mm W versus 16.45mm L x 7.20mm W), requiring verification of mechanical fit within the target application's physical constraints.

Frequently Asked Questions (FAQ)

Q: Can the MF-VS170-0 directly replace the 16VT170U in existing designs?

A: The MF-VS170-0 matches all electrical parameters of the 16VT170U. Physical dimensions differ slightly; confirm that the substitute's 17.00mm x 5.20mm footprint accommodates the available mounting space in your application.

Q: Are there compliance differences between these components?

A: Both components are ROHS3 compliant and carry cURus/TUV approvals. The MF-VS170-0 includes REACH Unaffected status, providing additional regulatory documentation.

Q: What is the significance of the different physical dimensions?

A: The 16VT170U measures 16.45mm L x 7.20mm W with 0.80mm maximum thickness. The MF-VS170-0 measures 17.00mm L x 5.20mm W with 0.90mm maximum thickness. These differences may affect PCB layout and mechanical assembly; physical fit verification is required.

Q: Does the strap package type remain the same?

A: Yes, both components use strap mounting configuration, maintaining compatibility with strap-based connection methods.

Q: What is the inventory status for the substitute part?

A: The MF-VS170-0 is in active production with 3020 units available in bulk packaging, providing reliable supply for new designs and production runs.