F28-200 Equivalent & Substitute Parts Reference

Part Overview

The F28-200 is a laminated core power transformer manufactured by Triad Magnetics, rated at 6VA with dual secondary windings. This through-hole mounted component is designed for Class 2/3 applications and is part of the Split Pack™ series. The part is currently active in production with 1057 units in stock inventory.

Equivalent and substitute parts are identified when component availability changes, supply chain disruptions occur, or design revisions require alternative sourcing while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Primary Voltage	115V
Secondary Voltage (Parallel)	14V
Secondary Voltage (Series)	28V
Output Current - Parallel	400mA
Output Current - Series	200mA
Power Rating	6VA
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 × 33.32mm W × 33.32mm H
Weight	0.44 lb (199.58 g)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the F28-200 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

Primary voltage: 115V
Secondary voltage configuration: Parallel 14V and Series 28V
Output current ratings: Parallel 400mA, Series 200mA
Power rating: 6VA
Isolation voltage: 2500Vrms
Winding configuration: Single primary, dual secondary, no center tap

Mechanical Compatibility Requirements:

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

Regulatory Compliance:

RoHS3 compliance
REACH unaffected status
ECCN: EAR99
HTSUS: 8504.31.4035

The 164F28 manufactured by Hammond Manufacturing meets all electrical and mechanical parameters specified above, establishing it as a direct substitute for the F28-200.

Parameter Comparison

Parameter	F28-200 (Triad Magnetics)	164F28 (Hammond Manufacturing)	Match Status
Primary Voltage	115V	115V	Equivalent
Secondary Voltage - Parallel	14V	14V	Equivalent
Secondary Voltage - Series	28V	28V	Equivalent
Output Current - Parallel	400mA	400mA	Equivalent
Output Current - Series	200mA	200mA	Equivalent
Power Rating	6VA	6VA	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 × 33.32mm W × 33.32mm H	41.28mm L × 33.32mm W × 33.32mm H	Equivalent
Weight	0.44 lb (199.58 g)	0.44 lb (199.58 g)	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
ECCN	EAR99	EAR99	Equivalent
HTSUS Code	8504.31.4035	8504.31.4035	Equivalent

Engineering Selection Recommendations

Primary Part Selection: F28-200

The F28-200 is the original specified component and remains the preferred selection when available. Current inventory status shows 1057 units in stock. This part carries active product status and full ROHS3 compliance certification.

Substitute Selection: 164F28

The 164F28 from Hammond Manufacturing is a direct electrical and mechanical equivalent. All critical parameters match the F28-200 specification exactly. This part is also active in production with 947 units in stock inventory and maintains identical ROHS3 compliance and REACH unaffected status.

Packaging Consideration:

The F28-200 is supplied in box packaging, while the 164F28 is supplied in bulk packaging. This difference does not affect electrical or mechanical compatibility but may impact inventory management and handling procedures.

Compliance Status:

Both parts satisfy identical regulatory requirements under ROHS3, REACH, EAR99 export classification, and HTSUS tariff code 8504.31.4035. Either part is suitable for applications requiring these certifications.

Frequently Asked Questions (FAQ)

Q: Can the 164F28 be used as a direct replacement for the F28-200 in existing designs?

A: Yes. The 164F28 meets all electrical specifications (voltage, current, power rating, isolation), mechanical specifications (dimensions, mounting, termination), and regulatory requirements (ROHS3, REACH, ECCN, HTSUS) of the F28-200. Direct substitution is supported without circuit modification.

Q: Are there any differences in performance between the F28-200 and 164F28?

A: No performance differences exist. Both parts are laminated core transformers with identical primary voltage (115V), secondary voltage configuration (14V parallel / 28V series), output current ratings (400mA parallel / 200mA series), power rating (6VA), and isolation voltage (2500Vrms).

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

A: Packaging format does not affect electrical or mechanical compatibility. The F28-200 box packaging and 164F28 bulk packaging contain identical components. Packaging selection depends on inventory management and handling requirements only.

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

A: Substitution is determined by equivalence in: primary voltage (115V), secondary voltage configuration (14V/28V), output current ratings (400mA/200mA), power rating (6VA), core type (laminated), winding configuration (single primary, dual secondary), mounting type (through hole), termination style (PC pin), physical dimensions (41.28mm × 33.32mm × 33.32mm), isolation voltage (2500Vrms), and regulatory compliance (ROHS3, REACH, EAR99, HTSUS 8504.31.4035).

Q: Are both parts suitable for Class 2/3 applications?

A: The F28-200 is specified for Class 2/3 applications as part of the Split Pack™ series. The 164F28 meets identical electrical and isolation specifications required for these application classes.

Q: What is the current inventory status for both parts?

A: F28-200 inventory: 1057 units in stock. 164F28 inventory: 947 units in stock. Both parts maintain active production status.

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