API Delevan 6051-020 Equivalent & Substitute Parts

Part Overview

The API Delevan 6051-020 is a laminated core power transformer rated at 2.5VA with dual primary and secondary windings, designed for through-hole mounting applications. This transformer features selectable voltage configurations (115V or 230V primary input) and parallel/series secondary output options (10V parallel or 20V series). The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

6051-020

API Delevan Inc.In Stock: 7566051-020 Datasheet

Current PartRFQ

6051R-020

API Delevan Inc.In Stock: 9666051R-020 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 6051-020 is determined by strict equivalence across the following critical parameters:

• Power Rating: 2.5VA (exact match required)
• Core Type: Laminated core construction
• Primary Voltage Configuration: Dual primary windings supporting 115V and 230V selection
• Secondary Voltage Configuration: Dual secondary windings with parallel (10V) and series (20V) output capability
• Output Current Specifications: Parallel 250mA maximum and series 125mA maximum
• Isolation Voltage: 1500Vrms minimum
• Mounting and Termination: Through-hole mounting with PC pin termination
• Physical Dimensions: 47.60mm L × 39.60mm W footprint with 16.50mm maximum seated height

The 6051R-020 meets all specified electrical and mechanical parameters, providing direct functional equivalence to the obsolete 6051-020.

Parameter Comparison

Engineering Selection Recommendations

The 6051R-020 is the direct equivalent substitute for the obsolete 6051-020. Both components share identical electrical specifications, physical dimensions, and mounting characteristics. The primary distinction is product lifecycle status: the 6051-020 is obsolete while the 6051R-020 is active production.

The 6051R-020 provides the additional advantage of ROHS3 compliance, meeting current environmental and regulatory requirements for new designs and manufacturing processes. For applications requiring RoHS non-compliant components, the 6051-020 specifications remain available through inventory stock, though long-term availability cannot be assured.

Selection between these parts should be based on regulatory requirements and supply chain considerations rather than functional performance, as electrical and mechanical compatibility is complete.

Frequently Asked Questions (FAQ)

Q: Can the 6051R-020 be used as a direct replacement for the 6051-020 in existing designs?

A: Yes. The 6051R-020 provides complete electrical and mechanical equivalence. Pin configuration, voltage ratings, current capacity, isolation voltage, and physical footprint are identical. No circuit modifications or PCB redesign is required.

Q: What is the difference between the 6051-020 and 6051R-020?

A: The primary differences are product status and regulatory compliance. The 6051-020 is obsolete and RoHS non-compliant. The 6051R-020 is in active production and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns with the through-hole PC pin termination?

A: No. Both parts use identical PC pin termination and through-hole mounting specifications. PCB hole sizing, spacing, and soldering procedures remain unchanged.

Q: What are the voltage configuration options for these transformers?

A: Both transformers feature dual primary windings (115V or 230V selection) and dual secondary windings (10V parallel or 20V series output). Configuration is determined by winding connection method during circuit design.

Q: Is the 6051-020 still available for purchase?

A: Limited inventory of the 6051-020 exists in stock (734 units reported). However, as an obsolete part, future availability is not guaranteed. The 6051R-020 is the recommended long-term solution with active production status and 898 units currently available.

Q: Do these transformers require any special handling or storage conditions?

A: Moisture Sensitivity Level is not applicable for both parts. Standard component storage practices are sufficient.