Signal Transformer 241-4-48 Equivalent & Substitute Parts

Part Overview

The Signal Transformer 241-4-48 is a laminated core power transformer rated at 6VA with a 115V primary and 48V secondary output. This chassis-mounted transformer is designed for applications requiring isolated 48V power delivery at up to 125mA output current. The part is currently active in production with full RoHS3 compliance and 2500Vrms isolation rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, application-specific packaging needs, or design flexibility in component selection.

Substiute Parts

241-4-48

Signal TransformerIn Stock: 753241-4-48 Datasheet

Current PartRFQ

186C48

Hammond ManufacturingIn Stock: 824186C48 Datasheet

DirectRFQ

F4-48

Triad MagneticsIn Stock: 1268F4-48 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 241-4-48 is determined by the following critical parameters:

Primary Substitution Criteria:

• Secondary voltage output of 48V
• Laminated core construction
• Chassis mount configuration
• Center tap availability
• Solder and quick connect termination compatibility

Acceptable Variation Parameters:

• Primary voltage input (115V or 230V dual primary acceptable)
• Output current capacity (equal to or greater than 125mA)
• Power rating (equal to or greater than 6VA)
• Physical dimensions (within chassis mount envelope constraints)
• Isolation voltage (equal to or greater than 2500V)

The 241-4-48 has two identified substitutes: Hammond Manufacturing 186C48 and Triad Magnetics F4-48. Both maintain the core electrical specifications while offering different feature sets and availability profiles.

Parameter Comparison

Engineering Selection Recommendations

Signal Transformer 241-4-48: Select this part for applications requiring exact 6VA power rating with single primary winding configuration. Suitable for 115V-only input designs. Compact footprint (60.30mm L x 33.30mm W x 36.20mm H) accommodates space-constrained chassis designs. All parts maintain ROHS3 compliance and EAR99 classification.

Hammond Manufacturing 186C48: This substitute provides dual primary winding capability (115V/230V), enabling operation across different input voltage standards. Output current capacity doubles to 250mA, supporting higher load requirements. Larger physical dimensions (71.37mm L x 43.82mm W x 41.15mm H) require verification against chassis mounting constraints. Isolation voltage is 2000Vrms, which is lower than the primary part. Select this option when dual-voltage input flexibility or increased output current is required.

Triad Magnetics F4-48: This substitute maintains electrical specifications identical to the 241-4-48 (6VA, 125mA, single primary winding). Dimensions are nearly equivalent (60.33mm L x 31.75mm W x 34.93mm H), with slightly reduced height. Quick Connect termination is specified at 0.187" (4.7mm). Isolation voltage matches the primary part at 2500VAC. Select this option when direct functional equivalence with minimal dimensional variation is required.

All three parts are active products with full regulatory compliance. Component selection should be based on primary voltage input requirements, output current demands, physical space constraints, and termination connector specifications.

Frequently Asked Questions (FAQ)

Q: Can the Hammond 186C48 replace the 241-4-48 in all applications?

A: The 186C48 is electrically compatible for 115V input applications and provides superior output current capacity (250mA vs. 125mA). However, its larger physical dimensions (71.37mm L x 43.82mm W x 41.15mm H) must be verified against available chassis mounting space. The isolation voltage is 2000Vrms compared to 2500Vrms on the 241-4-48. Substitution is valid when space permits and the lower isolation voltage meets application requirements.

Q: What is the difference between the 241-4-48 and F4-48?

A: Both parts deliver identical electrical performance: 6VA power rating, 115V primary, 48V secondary, 125mA maximum output current, and 2500V isolation. Physical dimensions are nearly equivalent, with the F4-48 slightly more compact in height (34.93mm vs. 36.20mm). The F4-48 specifies quick connect termination at 0.187" (4.7mm). Direct substitution is valid when connector specifications are compatible.

Q: Are all three parts RoHS3 compliant?

A: Yes. The 241-4-48, 186C48, and F4-48 are all ROHS3 compliant and REACH unaffected. All three carry EAR99 export classification.

Q: Which substitute should I select if my design requires dual-voltage input capability?

A: The Hammond 186C48 is the only substitute with dual primary winding (115V/230V). This part is required for applications needing operation across different input voltage standards. Verify that the larger physical dimensions accommodate your chassis design.

Q: Can I use the 186C48 in a space-constrained application?

A: The 186C48 is larger than both the 241-4-48 and F4-48. Dimensions are 71.37mm L x 43.82mm W x 41.15mm H. If space is limited, the F4-48 is the preferred substitute, as it maintains the original electrical specifications with nearly identical physical dimensions.

Q: What is the significance of the center tap on all three transformers?

A: All three parts include a center tap on the secondary winding. This feature enables center-tapped rectifier configurations and provides access to intermediate voltage points (24V from center tap to either end on the 48V secondary). Applications utilizing center-tap functionality will operate identically across all three parts.

Q: Are the termination styles compatible across all three parts?

A: All three parts support solder and quick connect termination. The F4-48 specifies quick connect at 0.187" (4.7mm). Verify connector pin spacing and gauge compatibility with your PCB or wiring harness design before substitution.