F16-400 Equivalent & Substitute Parts Reference

Part Overview

The F16-400 is a laminated core power transformer manufactured by Triad Magnetics, rated at 6VA with through-hole mounting and PC pin termination. This transformer features dual secondary windings configured for parallel (8V, 800mA) or series (16V, 400mA) operation from a 115V primary input. The part maintains active product status and is ROHS3 compliant with 2500Vrms isolation voltage rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across all critical parameters. Alternative sources become necessary due to inventory availability, supply chain considerations, or procurement preferences while maintaining identical functional specifications.

Key Parameters

Parameter	Value
Power Rating	6VA
Primary Voltage	115V
Secondary Voltage (Parallel)	8V
Secondary Voltage (Series)	16V
Output Current - Parallel	800mA
Output Current - Series	400mA
Core Type	Laminated
Primary Windings	Single
Secondary Windings	Dual
Center Tap	No
Mounting Type	Through Hole
Termination Style	PC Pin
Isolation Voltage	2500Vrms
Physical Dimensions	41.28mm L x 33.32mm W x 33.32mm H
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the F16-400 transformer is determined by strict equivalence across electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Electrical Parameters (Must Match Exactly):

Primary voltage: 115V
Secondary voltage configuration: Parallel 8V / Series 16V
Output current capacity: Parallel 800mA / Series 400mA
Power rating: 6VA
Isolation voltage: 2500Vrms
Winding configuration: Single primary, dual secondary, no center tap

Mechanical Parameters (Must Match Exactly):

Core type: Laminated
Mounting type: Through hole
Termination style: PC pin
Physical dimensions: 41.28mm L x 33.32mm W x 33.32mm H

Compliance Parameters (Must Match or Exceed):

RoHS status: ROHS3 compliant
REACH status: REACH unaffected

The Hammond Manufacturing 164F16 meets all electrical and mechanical equivalence criteria, establishing it as a valid substitute for the Triad Magnetics F16-400.

Parameter Comparison

Parameter	F16-400 (Triad Magnetics)	164F16 (Hammond Manufacturing)	Match Status
Power Rating	6VA	6VA	Equivalent
Primary Voltage	115V	115V	Equivalent
Secondary Voltage - Parallel	8V	8V	Equivalent
Secondary Voltage - Series	16V	16V	Equivalent
Output Current - Parallel	800mA	800mA	Equivalent
Output Current - Series	400mA	400mA	Equivalent
Core Type	Laminated	Laminated	Equivalent
Primary Windings	Single	Single	Equivalent
Secondary Windings	Dual	Dual	Equivalent
Center Tap	No	No	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Termination Style	PC Pin	PC Pin	Equivalent
Isolation Voltage	2500Vrms	2500Vrms	Equivalent
Physical Dimensions	41.28mm L x 33.32mm W x 33.32mm H	41.28mm L x 33.32mm W x 33.32mm H	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Both the F16-400 and 164F16 transformers are active products with full regulatory compliance. Selection between these parts should be based on:

Inventory and Availability: The F16-400 (Triad Magnetics) has 874 units in stock packaged in boxes. The 164F16 (Hammond Manufacturing) has 853 units available in bulk packaging.

Packaging Consideration: The F16-400 is supplied in box packaging, while the 164F16 is supplied in bulk packaging. Procurement requirements may dictate packaging preference.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and safety standards.

Electrical and Mechanical Equivalence: Complete parameter equivalence across all electrical specifications, physical dimensions, and mounting characteristics ensures direct functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 164F16 directly replace the F16-400 in existing designs?

A: Yes. The 164F16 and F16-400 are electrically and mechanically equivalent across all specified parameters, including voltage ratings, current capacity, core type, mounting configuration, and physical dimensions. Direct substitution is valid for applications currently using the F16-400.

Q: Are there differences in isolation voltage between these parts?

A: No. Both transformers provide 2500Vrms isolation voltage, meeting identical safety and performance requirements.

Q: What is the significance of packaging differences (box vs. bulk)?

A: Packaging affects procurement logistics and handling. Box packaging (F16-400) provides individual unit protection, while bulk packaging (164F16) is typically used for higher-volume orders. Electrical and mechanical performance are unaffected by packaging type.

Q: Do both parts support parallel and series secondary configurations?

A: Yes. Both the F16-400 and 164F16 feature dual secondary windings that support parallel configuration (8V, 800mA) and series configuration (16V, 400mA) operation.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status. No additional certifications or compliance variations exist between these parts.

Q: What are the physical mounting requirements?

A: Both transformers use through-hole mounting with PC pin termination. Physical dimensions are identical at 41.28mm length, 33.32mm width, and 33.32mm seated height, ensuring compatibility with existing PCB layouts.

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