DST4-20B14 Equivalent & Substitute Parts

Part Overview

The DST4-20B14 is a laminated core power transformer manufactured by Pulse Electronics, rated at 6VA with dual primary and secondary windings. This through-hole mounted component operates at 115V or 230V primary voltage with configurable secondary outputs of 10V (parallel) or 20V (series). The part is currently active in production with RoHS compliance and 2500Vrms isolation rating. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate qualified alternatives.

Substiute Parts

DST4-20B14

Pulse ElectronicsIn Stock: 1108DST4-20B14 Datasheet

Current PartRFQ

FS20-300

Triad MagneticsIn Stock: 1772FS20-300 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The FS20-300 manufactured by Triad Magnetics qualifies as a direct substitute for the DST4-20B14 based on the following critical parameters:

• Identical power rating of 6VA
• Matching primary voltage options: 115V and 230V
• Identical secondary voltage configuration: 10V (parallel) and 20V (series)
• Matching output current specifications: 600mA (parallel) and 300mA (series)
• Identical core type: laminated construction
• Matching winding configuration: dual primary and dual secondary
• Identical mounting type: through hole with PC pin termination
• Equivalent isolation voltage: 2500Vrms
• Physical dimensions within acceptable tolerance for through-hole PCB mounting
• Equivalent regulatory compliance status

Parameter Comparison

Engineering Selection Recommendations

Both the DST4-20B14 and FS20-300 are active production components with equivalent regulatory compliance. The DST4-20B14 carries RoHS compliance certification, while the FS20-300 meets ROHS3 standards, representing an enhanced compliance level. Both parts maintain REACH Unaffected status and share identical ECCN and HTSUS classifications, confirming their functional and regulatory equivalence.

Physical dimensions are within acceptable manufacturing tolerances for PCB mounting applications. The FS20-300 offers higher inventory availability (1686 units versus 1005 units for the DST4-20B14), which may influence sourcing decisions based on lead time and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the FS20-300 be used as a direct replacement for the DST4-20B14 in existing designs?

A: Yes. Both transformers share identical electrical specifications including power rating, voltage configurations, current ratings, winding configurations, and isolation voltage. Physical dimensions are equivalent within manufacturing tolerances for through-hole PCB mounting.

Q: Are there differences in compliance certifications between these parts?

A: The DST4-20B14 is RoHS Compliant, while the FS20-300 is ROHS3 Compliant. ROHS3 represents an updated compliance standard. Both parts maintain REACH Unaffected status and identical ECCN/HTSUS classifications.

Q: What are the key parameters that determine substitution eligibility?

A: Critical parameters include 6VA power rating, 115V/230V primary voltage, 10V/20V secondary voltage configuration, 600mA/300mA output current ratings, dual winding configuration, laminated core type, through-hole mounting, PC pin termination, and 2500Vrms isolation voltage.

Q: Are there packaging differences between these parts?

A: The DST4-20B14 is packaged with standard termination, while the FS20-300 is supplied in box packaging. Both use identical PC pin termination style suitable for through-hole PCB assembly.

Q: Which part should be selected based on availability?

A: Selection should be based on project lead time requirements and supply chain constraints. The FS20-300 currently has higher inventory availability at 1686 units compared to 1005 units for the DST4-20B14.