ET2835-040 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ET2835-040 is a 10 mH common mode choke manufactured by Triad Magnetics, designed for power line filtering applications. This through-hole mounted component operates at 2A maximum current with a DC resistance of 250 mOhm and is rated for 250V AC operation across an operating temperature range of -20°C to 105°C. The part is Active in product status and carries multiple international approvals including CSA, IEC, and UL certifications. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required for circuit redesign, inventory management, or component availability scenarios.

Substiute Parts

ET2835-040

Triad MagneticsIn Stock: 1022ET2835-040 Datasheet

Current PartRFQ

ET2432-024

Triad MagneticsIn Stock: 777ET2432-024 Datasheet

Parametric EquivalentRFQ

ET3542-053

Triad MagneticsIn Stock: 919ET3542-053 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ET2835-040 are identified based on the following critical parameters that define functional equivalence in power line common mode choke applications:

Primary Compatibility Criteria:

• Manufacturer: Triad Magnetics (same manufacturer ensures design consistency)
• Filter Type: Power Line (identical application category)
• Number of Lines: 2 (same circuit configuration)
• Current Rating: 2A maximum (identical current handling capacity)
• Voltage Rating - AC: 250V (same voltage specification)
• Mounting Type: Through Hole (identical PCB integration method)
• Package / Case: Vertical, 4 PC Pin (same physical footprint classification)
• Operating Temperature: -20°C ~ 105°C (identical thermal range)
• Approval Agency: CSA, IEC, UL (same regulatory certifications)
• RoHS Status: ROHS3 Compliant (same environmental compliance)

Variable Parameters Allowing Substitution:

• Inductance @ Frequency: May vary based on application requirements
• DC Resistance (DCR): May vary within acceptable limits for specific circuit designs

The ET2835-040 has two identified substitute parts: ET2432-024 and ET3542-053. Both maintain all primary compatibility criteria while presenting different inductance and DCR characteristics suitable for alternative circuit configurations.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ET2835-040, ET2432-024, and ET3542-053—maintain Active product status with identical regulatory approvals (CSA, IEC, UL) and ROHS3 compliance. Selection between these components is determined by the specific inductance and DC resistance requirements of the target circuit design.

ET2835-040 (Primary Reference): 10 mH inductance at 10 kHz with 250 mOhm DCR. This configuration provides mid-range inductance suitable for standard power line filtering applications.

ET2432-024 (Lower Inductance Alternative): 3.2 mH inductance at 1 kHz with 200 mOhm DCR. This part offers reduced inductance and lower DC resistance, suitable for applications requiring minimal impedance contribution or higher frequency filtering characteristics.

ET3542-053 (Higher Inductance Alternative): 18 mH inductance at 10 kHz with 300 mOhm DCR. This part provides increased inductance and higher DC resistance, suitable for applications requiring greater filtering attenuation or lower frequency response.

All substitute parts share identical current ratings (2A), voltage ratings (250V AC), operating temperature ranges (-20°C to 105°C), mounting configurations (through-hole vertical), and package specifications (4 PC pin). Physical dimensions vary between parts; PCB layout verification is necessary when substituting between these components.

Frequently Asked Questions (FAQ)

Q: Can ET2432-024 replace ET2835-040 in any application?

A: ET2432-024 shares all primary compatibility criteria with ET2835-040, including current rating, voltage rating, mounting type, and certifications. However, the inductance differs significantly (3.2 mH versus 10 mH). Substitution is valid only when the circuit design accommodates lower inductance values. Physical dimensions also differ; PCB layout must be verified.

Q: What is the primary difference between ET2835-040 and ET3542-053?

A: The primary difference is inductance: ET2835-040 provides 10 mH at 10 kHz, while ET3542-053 provides 18 mH at 10 kHz. DC resistance also differs (250 mOhm versus 300 mOhm). Both parts maintain identical current and voltage ratings. Physical dimensions vary; ET3542-053 is larger. Selection depends on required filtering attenuation levels.

Q: Are all three parts suitable for the same PCB footprint?

A: No. While all three parts use through-hole vertical mounting with 4 PC pins, their physical dimensions differ. ET2835-040 measures 1.240" L x 0.925" W x 1.457" H; ET2432-024 measures 0.767" L x 1.040" W x 1.220" H; ET3542-053 measures 1.496" L x 1.024" W x 1.772" H. PCB layout verification is required when substituting between these components.

Q: Do all substitute parts carry the same regulatory approvals?

A: Yes. ET2835-040, ET2432-024, and ET3542-053 all carry CSA, IEC, and UL approvals and are ROHS3 compliant. All parts maintain identical operating temperature ranges (-20°C to 105°C) and voltage ratings (250V AC).

Q: What determines whether a substitute part is acceptable for my application?

A: Substitution validity is determined by: (1) inductance and DCR requirements of the circuit design, (2) available PCB space for the physical dimensions of the substitute part, (3) current and voltage operating conditions, and (4) thermal environment. All three parts meet identical regulatory and compliance standards.

Q: Can ET3542-053 be used where ET2835-040 is specified?

A: ET3542-053 shares all primary compatibility criteria with ET2835-040. However, the higher inductance (18 mH versus 10 mH) and higher DCR (300 mOhm versus 250 mOhm) alter circuit filtering characteristics. Substitution is valid only when the circuit design accommodates these parameter changes. Physical dimensions are larger; PCB layout must be verified.