FS120-100 Laminated Power Transformer Equivalent & Substitute Parts

Part Overview

The FS120-100 is a 12VA laminated core power transformer manufactured by Triad Magnetics, designed for through-hole mounting applications. This transformer features dual primary and secondary windings with selectable voltage configurations (115V/230V primary input; 60V parallel or 120V series secondary output). The part is currently in active production status with 862 units in stock.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits alternative sourcing from qualified manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

FS120-100

Triad MagneticsIn Stock: 889FS120-100 Datasheet

Current PartRFQ

162G120

Hammond ManufacturingIn Stock: 1066162G120 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FS120-100 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Identical power rating (12VA)
• Matching primary voltage inputs (115V, 230V dual configuration)
• Matching secondary voltage outputs (Parallel 60V, Series 120V)
• Matching output current specifications (Parallel 200mA, Series 100mA)
• Identical isolation voltage (2500Vrms)
• Dual primary and dual secondary winding configuration
• Laminated core construction

Mechanical Equivalence Requirements:

• Through-hole mounting type
• PC pin termination style
• Footprint compatibility (47.63mm L × 39.67mm W)
• Height clearance within acceptable PCB assembly tolerances

Compliance Requirements:

• ROHS3 compliance
• REACH unaffected status
• EAR99 export classification

The Hammond Manufacturing 162G120 meets all electrical and mechanical equivalence criteria, with a maximum seated height of 38.10mm (1.60mm greater than the FS120-100). This height differential must be evaluated against specific PCB assembly constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (FS120-100): The FS120-100 remains the preferred selection when available. This part is in active production with 862 units in current inventory. It meets all ROHS3 and REACH compliance requirements and is classified as EAR99 for export purposes.

Substitute Part Selection (162G120): The Hammond Manufacturing 162G120 is a qualified substitute when FS120-100 availability is constrained. This part is also in active production status with 1042 units in inventory. It maintains full electrical equivalence and mechanical compatibility across all critical parameters.

Height Consideration: The 162G120 has a maximum seated height of 38.10mm compared to the FS120-100 at 36.50mm. This 1.60mm height difference must be evaluated against PCB assembly clearance requirements, component stacking constraints, and enclosure dimensions. If vertical clearance is limited to 36.50mm or less, the 162G120 may not be suitable without design modification.

Packaging Difference: The FS120-100 is supplied in box packaging, while the 162G120 is supplied in bulk packaging. This distinction affects inventory management and component handling procedures but does not impact electrical or mechanical performance.

Compliance Equivalence: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99. No additional compliance documentation or certification is required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can the 162G120 be used as a direct replacement for the FS120-100 in all applications?

A: The 162G120 is electrically and mechanically equivalent to the FS120-100 across all critical parameters. However, the 1.60mm height difference must be verified against your specific PCB assembly and enclosure constraints. If vertical clearance is not a limiting factor, the 162G120 is a direct substitute.

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

A: Substitution is determined by equivalence in power rating (12VA), primary voltage configuration (115V/230V), secondary voltage outputs (Parallel 60V, Series 120V), output current ratings (Parallel 200mA, Series 100mA), isolation voltage (2500Vrms), winding configuration (dual primary, dual secondary), core type (laminated), mounting type (through-hole), termination style (PC pin), and physical footprint (47.63mm × 39.67mm).

Q: Does the packaging difference between box and bulk affect component performance?

A: No. Packaging type (box versus bulk) affects only inventory management, shipping, and handling procedures. It does not impact electrical performance, mechanical compatibility, or compliance status.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the FS120-100 and 162G120 are ROHS3 compliant and REACH unaffected. Both are classified as EAR99 for export purposes.

Q: What should I do if the 1.60mm height difference is critical to my design?

A: If vertical clearance is limited to 36.50mm or less, the FS120-100 must be used. The 162G120 at 38.10mm maximum seated height will not fit within this constraint without design modification.

Q: Are there any electrical performance differences between these two transformers?

A: No. Both transformers are electrically identical across all specified parameters: power rating, voltage inputs, voltage outputs, current ratings, isolation voltage, and winding configuration.

Q: Can I mix FS120-100 and 162G120 units in the same production batch?

A: Yes, provided that your PCB design accommodates the 1.60mm height difference and your assembly process can handle both part numbers. Component traceability and documentation should clearly identify which part number is used in each unit.