DST6-24B20 Equivalent & Substitute Parts

Part Overview

The DST6-24B20 is a 20VA laminated core power transformer manufactured by Pulse Electronics, designed for through-hole mounting applications. This split bobbin plug-in transformer features dual primary and secondary windings, supporting both 115V and 230V primary inputs with configurable secondary outputs of 12V parallel or 24V series. The component is RoHS compliant and maintains active product status with 967 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part becomes unavailable or when supply chain optimization is required.

Substiute Parts

DST6-24B20

Pulse ElectronicsIn Stock: 1050DST6-24B20 Datasheet

Current PartRFQ

DST-6-24

Signal TransformerIn Stock: 2029DST-6-24 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The DST-6-24 manufactured by Signal Transformer qualifies as a direct substitute based on the following critical parameters:

Electrical specifications match exactly: 20VA power rating, dual 115V/230V primary inputs, dual secondary windings with 12V parallel and 24V series output configurations, identical maximum output currents of 1.6A parallel and 800mA series, and equivalent 2500Vrms isolation voltage.

Mechanical compatibility is maintained: through-hole mounting type, PC pin termination style, and physical dimensions within acceptable tolerance (57.20mm L × 47.60mm W × 36.90mm H maximum seated height compared to 57.15mm L × 47.24mm W × 36.58mm H for the primary part).

Core construction and winding configuration are identical: laminated core type with dual primary and dual secondary windings, no center tap configuration.

Compliance and regulatory status are equivalent: both parts are RoHS compliant and REACH unaffected, with matching ECCN and HTSUS classifications.

Parameter Comparison

Engineering Selection Recommendations

The DST-6-24 from Signal Transformer is functionally equivalent to the DST6-24B20 for applications requiring 20VA laminated core power transformation with dual primary and secondary winding configurations. Both parts maintain active product status and satisfy identical electrical and mechanical requirements.

Selection between these parts should be based on supply chain availability and inventory levels. The DST-6-24 currently maintains higher inventory (1943 units) compared to the DST6-24B20 (967 units), providing extended lead time assurance for high-volume procurement.

Both parts meet RoHS and REACH compliance requirements. The DST-6-24 specifies ROHS3 compliance, representing the current RoHS directive iteration, while the DST6-24B20 specifies general RoHS compliance. Both are suitable for applications subject to RoHS regulations.

Physical dimensions are within acceptable manufacturing tolerances, with maximum variations of 0.05mm in length, 0.36mm in width, and 0.32mm in height. PCB layout accommodation should verify clearance for the DST-6-24 maximum seated height of 36.90mm.

Frequently Asked Questions (FAQ)

Q: Can the DST-6-24 be used as a direct replacement for the DST6-24B20 in existing designs?

A: Yes. The DST-6-24 is electrically and mechanically equivalent. All electrical parameters, winding configurations, isolation ratings, and termination styles are identical. Physical dimensions are within standard manufacturing tolerances and should not require PCB redesign for typical applications.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS compliant and REACH unaffected. The DST-6-24 specifies ROHS3 compliance, representing the current RoHS directive version. Both parts carry identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications for export and tariff purposes.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is based on matching: 20VA power rating, dual 115V/230V primary inputs, dual secondary windings with 12V parallel and 24V series outputs, 1.6A parallel and 800mA series maximum currents, laminated core construction, through-hole mounting, PC pin termination, and 2500Vrms isolation voltage.

Q: How do the physical dimensions compare?

A: The DST-6-24 measures 57.20mm L × 47.60mm W with a maximum seated height of 36.90mm, compared to the DST6-24B20 at 57.15mm L × 47.24mm W × 36.58mm H. Variations are within 0.36mm maximum, typical of transformer manufacturing tolerances.

Q: Which part should be selected for new designs?

A: Selection should be based on supply chain requirements and inventory availability. The DST-6-24 offers higher current inventory (1943 units) and ROHS3 compliance status. The DST6-24B20 remains available with active product status. Both are suitable for new applications meeting the specified electrical and mechanical requirements.