6445-020 Laminated Power Transformer Equivalent & Substitute Parts

Part Overview

The 6445-020 is a 10VA laminated core power transformer manufactured by API Delevan Inc., designed for through-hole mounting applications. It features dual primary windings (115V/230V) and dual secondary windings (parallel 10V/series 20V configuration) with a maximum isolation voltage of 4000Vrms. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement requirements.

Substiute Parts

6445-020

API Delevan Inc.In Stock: 8386445-020 Datasheet

Current PartRFQ

6445R-020

API Delevan Inc.In Stock: 10076445R-020 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 6445-020 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Power rating: 10VA
• Primary voltage configuration: Dual windings supporting 115V and 230V
• Secondary voltage outputs: Parallel 10V and series 20V
• Output current capacity: Parallel 1A, series 500mA
• Isolation voltage: 4000Vrms

Mechanical Parameters (Must Match Exactly):

• Core type: Laminated
• Mounting configuration: Through hole
• Termination style: PC pin
• Physical envelope: 47.63mm L x 39.67mm W x 36.50mm H (seated max)

Functional Parameters (Must Match Exactly):

• Primary winding configuration: Dual
• Secondary winding configuration: Dual
• Center tap: None

The 6445R-020 meets all substitution criteria as a direct functional equivalent with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The 6445R-020 is the direct functional substitute for the obsolete 6445-020. Selection criteria are based on the following factors:

Product Status Consideration: The 6445-020 is classified as obsolete. The 6445R-020 is an active product from the same manufacturer with identical electrical and mechanical specifications, making it the appropriate replacement for new designs and ongoing procurement.

Regulatory Compliance: The 6445R-020 achieves ROHS3 compliance, whereas the 6445-020 is non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the 6445R-020 provides regulatory alignment while maintaining functional equivalence.

Electrical and Mechanical Equivalence: All critical parameters—power rating, voltage configurations, current ratings, core type, winding configuration, isolation voltage, mounting type, termination style, and physical dimensions—are identical between the two parts. This ensures direct functional interchangeability in circuit applications.

Inventory and Availability: The 6445R-020 has 913 units in stock compared to 743 units of the obsolete 6445-020, providing improved procurement reliability for ongoing production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 6445R-020 be used as a direct replacement for the 6445-020 in existing designs?

A: Yes. The 6445R-020 is electrically and mechanically identical to the 6445-020. All voltage ratings, current capacities, winding configurations, isolation specifications, mounting type, termination style, and physical dimensions match exactly. Direct substitution is supported without circuit modification.

Q: What is the primary difference between the 6445-020 and 6445R-020?

A: The 6445R-020 is the active production equivalent of the obsolete 6445-020. The primary difference is product status and RoHS compliance. The 6445R-020 is ROHS3 compliant, while the 6445-020 is non-compliant. All functional specifications are identical.

Q: Are there any physical or mounting differences between these parts?

A: No. Both parts have identical dimensions (47.63mm L x 39.67mm W x 36.50mm H seated max), identical through-hole mounting configuration, and identical PC pin termination style. PCB layout and mechanical integration are fully compatible.

Q: Does the RoHS3 compliance of the 6445R-020 affect its electrical performance?

A: No. RoHS3 compliance relates to material composition and environmental standards, not electrical performance. The 6445R-020 maintains all electrical specifications of the 6445-020, including power rating, voltage outputs, current capacity, and isolation voltage.

Q: What is the isolation voltage rating for both parts?

A: Both the 6445-020 and 6445R-020 have an isolation voltage rating of 4000Vrms, providing equivalent dielectric strength and safety margins for high-voltage isolation applications.

Q: Can these transformers be configured for different voltage outputs?

A: Yes. Both parts feature dual primary windings (115V/230V) and dual secondary windings that support parallel configuration (10V at 1A) or series configuration (20V at 500mA). Configuration is determined by winding connection method in the circuit design.

Q: Is the 6445R-020 suitable for new product designs?

A: Yes. The 6445R-020 is an active product with improved regulatory compliance (ROHS3). It is the recommended choice for new designs requiring a 10VA laminated power transformer with dual primary and secondary windings in a through-hole package.