Hammond Manufacturing 167M30 Power Transformer - Equivalent & Substitute Parts

Part Overview

The Hammond Manufacturing 167M30 is a laminated core power transformer rated at 90VA with a 115V primary and 30V center-tapped secondary. Designed for chassis mount applications with wire lead termination, this transformer is classified as obsolete product status. Due to its obsolete designation, identifying functionally equivalent substitute components is essential for ongoing system maintenance, repair, and new design implementations where this specification remains applicable.

Substiute Parts

167M30

Hammond ManufacturingIn Stock: 999167M30 Datasheet

Current PartRFQ

241-8-28L

Signal TransformerIn Stock: 856241-8-28L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Hammond Manufacturing 167M30 is determined by the following critical parameters:

• Primary Voltage: 115V (single primary winding required)
• Secondary Voltage: 30V nominal with center tap configuration
• Power Capacity: Minimum 90VA to support equivalent load handling
• Output Current: Minimum 3A capability
• Core Type: Laminated construction for electromagnetic performance
• Mounting Configuration: Chassis mount with wire lead termination
• Isolation Voltage: Minimum 2000Vrms for safety compliance

The Signal Transformer 241-8-28L qualifies as a substitute based on matching primary voltage (115V), center-tap secondary configuration, laminated core type, chassis mount design, and wire lead termination. The substitute provides enhanced specifications in power capacity (100VA vs. 90VA) and output current (3.6A vs. 3A), with secondary voltage of 28V representing a 6.7% variance from the original 30V specification. This variance remains within acceptable tolerance for applications designed for the 167M30.

Parameter Comparison

Engineering Selection Recommendations

The Signal Transformer 241-8-28L serves as a direct functional substitute for the obsolete Hammond Manufacturing 167M30. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new implementations and legacy system replacements.

The substitute component offers superior specifications across multiple parameters: increased power capacity (100VA vs. 90VA), higher output current capability (3.6A vs. 3A), and enhanced isolation voltage (2500Vrms vs. 2000Vrms). The secondary voltage differential of 2V (28V vs. 30V) represents a 6.7% reduction and must be evaluated against circuit design tolerances. Applications with strict voltage regulation requirements or dependent on the full 30V specification may require additional voltage compensation or circuit adjustment.

The Signal Transformer 241-8-28L maintains active product status, ensuring ongoing availability and supply chain continuity compared to the obsolete Hammond part. Both transformers employ identical mounting methodology (chassis mount), termination approach (wire leads), and core construction (laminated), facilitating direct mechanical and electrical integration into existing designs.

Frequently Asked Questions (FAQ)

Q: Can the Signal Transformer 241-8-28L directly replace the Hammond 167M30 without circuit modification?

A: The 241-8-28L provides functional equivalence for most applications. The 2V secondary voltage difference (28V vs. 30V) must be evaluated against circuit design specifications. Applications with voltage regulation circuits or load-dependent voltage requirements may operate within acceptable parameters. Applications requiring precisely 30V output should assess tolerance requirements before substitution.

Q: What are the key compatibility factors for this substitution?

A: Primary voltage matching (115V), center-tap secondary configuration, laminated core type, chassis mount design, and wire lead termination are the critical compatibility factors. Both components satisfy these requirements. The substitute provides enhanced isolation voltage and power capacity, which are compatible with the original application requirements.

Q: How do the physical dimensions compare between these transformers?

A: The Hammond 167M30 measures 64.60mm L × 76.20mm W × 77.72mm H (seated), while the Signal Transformer 241-8-28L measures 102.40mm L × 58.50mm W × 67.70mm H (seated). Mechanical fit verification is required for chassis mount applications with space constraints.

Q: Are both components RoHS compliant?

A: Yes, both the Hammond 167M30 and Signal Transformer 241-8-28L are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the significance of the product status difference?

A: The Hammond 167M30 is classified as obsolete, indicating discontinued manufacturing and limited availability. The Signal Transformer 241-8-28L maintains active product status, ensuring reliable supply chain access and ongoing manufacturer support for new designs and system replacements.