FD7-16 Equivalent & Substitute Parts Reference

Part Overview

The FD7-16 is a laminated core power transformer manufactured by Triad Magnetics, rated at 56VA with dual primary windings (115V/230V) and a single center-tapped secondary winding (16V, 3.5A maximum output). This chassis-mount transformer is designed for applications requiring isolated AC power conversion with selectable primary voltage input. The part is currently active in production with full RoHS3 compliance and 2500VAC isolation rating. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance are maintained across alternative manufacturers.

Substiute Parts

FD7-16

Triad MagneticsIn Stock: 686FD7-16 Datasheet

Current PartRFQ

DP-241-7-16

Signal TransformerIn Stock: 1070DP-241-7-16 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FD7-16 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Power rating: 56VA
• Primary winding configuration: Dual (115V/230V selectable)
• Secondary voltage: 16V
• Secondary current capacity: 3.5A minimum
• Center tap presence: Required
• Isolation voltage: 2500VAC minimum

Mechanical Equivalence Requirements:

• Mounting type: Chassis Mount
• Termination style: Solder and Quick Connect compatible
• Physical dimensions: Within tolerance for board-level integration
• Weight: Consistent with core material and winding specifications

Regulatory Equivalence Requirements:

• RoHS3 compliance
• REACH unaffected status
• ECCN classification: EAR99

The DP-241-7-16 manufactured by Signal Transformer meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

FD7-16 (Triad Magnetics): Select this part when Triad Magnetics is the preferred manufacturer or when existing supply chain relationships favor this source. The part is active in production with 632 units in current inventory. Full RoHS3 and REACH compliance is confirmed.

DP-241-7-16 (Signal Transformer): Select this part as a direct substitute when supply availability is a priority. Signal Transformer maintains 1033 units in inventory, providing enhanced availability. The DP-241-7-16 is part of the Two-4-One™ series and carries identical electrical specifications, regulatory certifications, and mechanical compatibility. Physical dimensions show minor variations (width +3.18mm, height +0.65mm) that remain within acceptable tolerance for chassis-mount applications.

Both parts are active products with equivalent compliance profiles (RoHS3, REACH Unaffected, EAR99 classification). Selection between these two transformers should be based on supply chain requirements, inventory availability, and manufacturer preference rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the DP-241-7-16 be used as a direct replacement for the FD7-16 in existing designs?

A: Yes. The DP-241-7-16 is electrically and mechanically equivalent to the FD7-16. Both transformers provide identical power ratings (56VA), primary voltage selection (115V/230V), secondary voltage (16V at 3.5A), center-tap configuration, and isolation voltage (2500VAC). Termination styles are compatible (Solder and Quick Connect). Physical dimensions are within acceptable tolerance for chassis-mount applications.

Q: Are there any dimensional differences between these two transformers?

A: Minor dimensional variations exist. The DP-241-7-16 measures 93.70mm L × 49.20mm W × 57.80mm H (seated), compared to the FD7-16 at 93.65mm L × 46.02mm W × 57.15mm H (seated). These differences are within acceptable tolerance for standard chassis-mount installations and do not affect electrical performance or mechanical fit in typical applications.

Q: Do both transformers meet the same regulatory requirements?

A: Yes. Both the FD7-16 and DP-241-7-16 are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Isolation voltage ratings are equivalent (2500VAC/Vrms). Both parts are active products with current manufacturing status.

Q: What is the difference between the Quick Connect termination on these transformers?

A: Both transformers feature Quick Connect termination compatible with 0.187" (4.7mm) connectors, enabling rapid board-level assembly without soldering. The Solder termination option is also available on both parts for permanent connections. Termination style selection depends on assembly methodology and application requirements.

Q: Which transformer should I select for new designs?

A: Either transformer is suitable for new designs. Selection should be based on manufacturer preference, supply chain strategy, and inventory availability. The DP-241-7-16 currently has higher inventory levels (1033 units vs. 632 units), which may provide supply chain advantages. Both transformers carry identical electrical specifications and regulatory compliance.