A41-43-20 Equivalent & Substitute Parts

Part Overview

The A41-43-20 is a laminated core power transformer manufactured by Signal Transformer, rated at 43VA with dual primary and secondary windings. This chassis mount transformer is designed for applications requiring 115V or 230V primary input with configurable secondary output of 10V parallel or 20V series. The part is currently active in production with 1123 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance are maintained across alternative manufacturers.

Substiute Parts

A41-43-20

Signal TransformerIn Stock: 1201A41-43-20 Datasheet

Current PartRFQ

VPS20-2200

Triad MagneticsIn Stock: 1079VPS20-2200 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A41-43-20 is determined by strict equivalence across the following critical parameters:

• Power rating: 43VA
• Primary voltage configuration: Dual 115V/230V
• Secondary voltage output: Parallel 10V and Series 20V capability
• Secondary current capacity: Parallel 4.4A and Series 2.2A
• Core construction: Laminated
• Winding configuration: Dual primary and dual secondary
• Mounting interface: Chassis mount
• Electrical isolation: 4000Vrms minimum
• Regulatory compliance: ROHS3 Compliant

The VPS20-2200 from Triad Magnetics meets all specified electrical and mechanical requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the A41-43-20 and VPS20-2200 are active production components with equivalent electrical specifications and identical regulatory compliance status. Selection between these parts is based on availability and supply chain requirements. The A41-43-20 currently maintains 1123 units in inventory, while the VPS20-2200 has 1049 units available. Both transformers meet ROHS3 compliance and carry identical isolation voltage ratings. Physical dimensions vary slightly (A41-43-20: 79.40mm L × 54.40mm W × 68.20mm H; VPS20-2200: 74.68mm L × 50.80mm W × 74.68mm H), requiring verification of mounting clearance in the target application.

Frequently Asked Questions (FAQ)

Q: Can the VPS20-2200 directly replace the A41-43-20 in existing designs?

A: Yes, provided that the physical dimensions of the VPS20-2200 are compatible with the available mounting space. The electrical specifications are identical, and both parts meet the same regulatory requirements.

Q: Are there differences in termination compatibility?

A: Both parts offer identical termination options: Solder and Quick Connect. Existing wiring harnesses and connection methods are compatible.

Q: What is the significance of the dual primary and dual secondary winding configuration?

A: The dual winding configuration allows flexible voltage selection on both input and output sides. Primary windings support 115V or 230V operation, while secondary windings enable parallel (10V, 4.4A) or series (20V, 2.2A) output configurations.

Q: Do physical dimension differences affect substitution?

A: Physical dimensions must be verified against available mounting space in the target application. The VPS20-2200 has a greater height (74.68mm vs. 68.20mm) and slightly smaller length and width. Confirm clearance before implementation.

Q: Are both parts suitable for the same isolation voltage requirements?

A: Yes. Both the A41-43-20 and VPS20-2200 provide 4000Vrms isolation voltage, meeting identical safety and performance standards.