167U18 Equivalent & Substitute Parts

Part Overview

The 167U18 is a laminated core power transformer manufactured by Hammond Manufacturing, rated for 270VA with a 115V primary and 18V secondary output. This chassis mount transformer features a center tap configuration and wire lead termination, designed for industrial and commercial applications requiring reliable step-down voltage conversion.

The 167U18 is classified as obsolete. Identifying equivalent substitute parts is essential for maintaining system functionality, ensuring design continuity, and managing component availability in production environments where original stock becomes depleted.

Substiute Parts

167U18

Hammond ManufacturingIn Stock: 914167U18 Datasheet

Current PartRFQ

165U18

Hammond ManufacturingIn Stock: 782165U18 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 167U18 are identified based on electrical and mechanical compatibility within the laminated core transformer category. The critical parameters determining substitution eligibility are:

• Voltage specifications: Primary 115V and secondary 18V full load voltage
• Power rating: 270VA maximum
• Winding configuration: Single primary, single secondary with center tap
• Isolation voltage: 2000Vrms
• Mounting and termination: Chassis mount with wire leads
• Core type: Laminated construction

The 165U18 qualifies as a direct substitute, maintaining identical electrical specifications and functional characteristics while differing in physical dimensions and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The 165U18 serves as the active production equivalent for the obsolete 167U18. Both transformers maintain identical electrical specifications, winding configurations, and isolation ratings, ensuring functional compatibility in 115V to 18V step-down applications requiring 270VA capacity.

The 165U18 is currently in active production status with established inventory availability, making it the preferred selection for new designs and component replenishment. Both parts maintain ROHS3 compliance and equivalent regulatory certifications.

Physical dimensions differ between the two models. The 165U18 features reduced height (95.25mm versus 115.82mm) and modified length and width proportions. Mechanical fit verification is required when retrofitting the 165U18 into existing chassis designs originally specified for the 167U18.

Frequently Asked Questions (FAQ)

Q: Can the 165U18 directly replace the 167U18 in existing applications?

A: The 165U18 provides electrical equivalence with identical voltage, current, power, and isolation specifications. Mechanical compatibility depends on available chassis space and mounting clearances. Dimensional verification is necessary before implementation.

Q: What is the primary reason for substitution?

A: The 167U18 is classified as obsolete. The 165U18 is an active production part from the same manufacturer with identical electrical performance, ensuring continued availability and supply chain continuity.

Q: Are there compliance differences between these parts?

A: Both the 167U18 and 165U18 maintain ROHS3 compliance, REACH unaffected status, and equivalent isolation voltage ratings. No compliance barriers exist for substitution.

Q: What dimensions should I verify before substitution?

A: Compare the mounting footprint and height clearance. The 167U18 measures 95.25mm L x 114.30mm W x 115.82mm H, while the 165U18 measures 114.30mm L x 88.90mm W x 95.25mm H. Verify that the 165U18 fits within your available chassis space.

Q: Are the winding configurations identical?

A: Yes. Both transformers feature single primary and single secondary windings with center tap configuration, maintaining identical electrical behavior in center-tapped rectifier and dual-voltage output applications.