Equivalent & Substitute Parts for Signal Transformer 241-3-48

Part Overview

The Signal Transformer 241-3-48 is a laminated core power transformer rated at 2.4VA with a 115V primary and 48V secondary output. This chassis mount transformer is designed for applications requiring isolated 48V power delivery at up to 50mA output current. The part is currently active in production with full RoHS3 compliance and 2500Vrms isolation rating. Substitute parts may be required due to inventory availability, lead time constraints, or application-specific packaging preferences while maintaining equivalent electrical performance.

Substiute Parts

241-3-48

Signal TransformerIn Stock: 1043241-3-48 Datasheet

Current PartRFQ

186B48

Hammond ManufacturingIn Stock: 1025186B48 Datasheet

DirectRFQ

F3-48

Triad MagneticsIn Stock: 1022F3-48 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 241-3-48 is determined by the following critical parameters:

• Primary voltage compatibility: 115V input
• Secondary voltage: 48V output
• Output current capacity: minimum 50mA
• Power rating: minimum 2.4VA
• Core type: Laminated construction
• Mounting configuration: Chassis mount
• Center tap availability: Required
• Isolation voltage: minimum 2500V

The substitute parts listed below meet or exceed these core electrical and mechanical specifications, ensuring functional equivalence in applications designed for the 241-3-48.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain active product status and full RoHS3 compliance, meeting regulatory requirements equivalent to the 241-3-48.

The Hammond Manufacturing 186B48 provides increased output current capacity at 120mA and higher power rating at 6VA, with dual primary winding options supporting both 115V and 230V inputs. However, the isolation voltage is rated at 2000Vrms, which is 500V lower than the original specification. Physical dimensions are larger at 60.20mm L x 41.28mm W x 34.80mm H, and weight increases to 0.44 lb. This part is suitable for applications where higher current delivery is required and space constraints are not limiting.

The Triad Magnetics F3-48 maintains electrical specifications identical to the 241-3-48, with matching 50mA output current and 2.4VA power rating. Isolation voltage is rated at 2500VAC, meeting the original specification. Physical dimensions are more compact at 41.28mm L x 30.15mm W x 30.15mm H, with weight of 0.25 lb. Termination connectors are specified as 0.187" (4.7mm) quick connect. This part is suitable for space-constrained applications requiring direct parameter equivalence.

Frequently Asked Questions (FAQ)

Q: Can the Hammond Manufacturing 186B48 be used as a direct replacement for the 241-3-48?

A: The 186B48 meets the minimum electrical requirements for 115V primary input and 48V secondary output with center tap configuration. However, the isolation voltage is 2000Vrms compared to the 241-3-48 specification of 2500Vrms. Applications requiring the full 2500Vrms isolation rating must use the 241-3-48 or F3-48. The 186B48 is physically larger and heavier, requiring verification of mounting space availability.

Q: Is the Triad Magnetics F3-48 a direct equivalent to the 241-3-48?

A: Yes. The F3-48 maintains identical electrical specifications: 115V primary, 48V secondary, 50mA maximum output current, 2.4VA power rating, and 2500V isolation voltage. Physical dimensions are more compact. The primary difference is the termination connector specification of 0.187" (4.7mm) quick connect, which must be verified for compatibility with existing circuit board or wiring harness designs.

Q: What are the key differences in physical dimensions between these three transformers?

A: The 241-3-48 measures 52.60mm L x 29.60mm W x 31.20mm H. The F3-48 is the most compact at 41.28mm L x 30.15mm W x 30.15mm H. The 186B48 is the largest at 60.20mm L x 41.28mm W x 34.80mm H. Space-constrained applications should prioritize the F3-48, while applications with adequate mounting area may use any of the three options based on electrical requirements.

Q: Are all three transformers RoHS3 compliant?

A: Yes. The 241-3-48, 186B48, and F3-48 are all RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the significance of the center tap feature present in all three transformers?

A: The center tap provides a reference point for split-rail power supply designs, allowing generation of positive and negative voltage rails from a single secondary winding. All three transformers include this feature, ensuring compatibility with applications designed for center-tapped transformer operation.