Equivalent & Substitute Parts for API Delevan Inc. 6446-020 Laminated Power Transformer

Part Overview

The API Delevan Inc. 6446-020 is a 20VA laminated core power transformer designed for through-hole mounting applications. This transformer features dual primary windings (115V, 230V) and dual secondary windings (parallel 10V/2A or series 20V/1A), with 4000Vrms isolation voltage. The 6446-020 is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements.

Substiute Parts

6446-020

API Delevan Inc.In Stock: 10446446-020 Datasheet

Current PartRFQ

6446R-020

API Delevan Inc.In Stock: 10376446R-020 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 6446-020 with the active 6446R-020 is based on electrical and mechanical parameter equivalence. Both transformers share identical specifications across all critical functional parameters: 20VA power rating, dual 115V/230V primary windings, dual secondary windings with parallel 10V/2A and series 20V/1A configurations, laminated core construction, through-hole mounting, PC pin termination, 4000Vrms isolation voltage, and identical physical dimensions and weight.

The substitution is valid based on the following key parameters:

• Power rating (20VA)
• Primary voltage configuration (dual 115V/230V)
• Secondary voltage outputs (parallel 10V, series 20V)
• Output current ratings (parallel 2A, series 1A)
• Core type (laminated)
• Winding configuration (dual primary, dual secondary)
• Mounting and termination (through-hole, PC pin)
• Isolation voltage (4000Vrms)
• Physical envelope (57.15mm L × 47.63mm W × 36.50mm H)

Parameter Comparison

Engineering Selection Recommendations

The 6446R-020 is the direct active equivalent for the obsolete 6446-020. Both components are manufactured by API Delevan Inc. and maintain complete electrical and mechanical parameter equivalence. The 6446R-020 offers the additional advantage of ROHS3 compliance, whereas the original 6446-020 is RoHS non-compliant. For applications requiring RoHS compliance or for new production designs, the 6446R-020 is the appropriate selection. Both transformers are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8504.31.4035.

Frequently Asked Questions (FAQ)

Q: Can the 6446R-020 be used as a direct replacement for the 6446-020 in existing designs?

A: Yes. The 6446R-020 is electrically and mechanically equivalent to the 6446-020. All electrical parameters (power rating, voltage configurations, current ratings, isolation voltage) and physical dimensions are identical. The through-hole mounting and PC pin termination are unchanged, allowing direct substitution in PCB layouts.

Q: What is the primary difference between the 6446-020 and 6446R-020?

A: The primary difference is product status and regulatory compliance. The 6446-020 is obsolete and RoHS non-compliant. The 6446R-020 is an active product with ROHS3 compliance, making it suitable for current production and applications with RoHS requirements.

Q: Are the physical dimensions identical between these two transformers?

A: Yes. Both transformers have identical dimensions of 57.15mm length × 47.63mm width × 36.50mm height and weigh 0.9 lb (408.23 g). They are pin-compatible and occupy the same PCB footprint.

Q: Do both transformers support the same voltage configurations?

A: Yes. Both the 6446-020 and 6446R-020 feature dual primary windings supporting 115V and 230V inputs, and dual secondary windings providing parallel 10V/2A or series 20V/1A outputs.

Q: Is the isolation voltage the same for both parts?

A: Yes. Both transformers provide 4000Vrms isolation voltage between primary and secondary windings.

Q: What is the inventory status for the 6446R-020?

A: The 6446R-020 is an active product with 987 pieces in stock as new original inventory.