KEMET SN14-400 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The KEMET SN14-400 is a 2-line common mode choke designed for power line filtering applications. This through-hole mounted component delivers 120 µH inductance at 100 kHz with a maximum DC resistance of 0.0450 ohm, rated for 5.0 A operation across an operating temperature range of -25°C to 105°C. The part maintains Active product status with full ROHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

Key Parameters

Parameter	SN14-400 Value
Inductance @ 100 kHz	120 µH
Current Rating (Max)	5.0 A
DC Resistance (Max)	0.0450 ohm
Number of Lines	2
Filter Type	Power Line
Mounting Type	Through Hole
Operating Temperature	-25°C ~ 105°C
Package / Case	Vertical, No Base, 2 PC Pin
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN14-400 are qualified based on the following criteria derived from provided parameters:

Primary Substitution Criteria:

Manufacturer: KEMET (same manufacturer ensures design consistency)
Filter Type: Power Line (functional category match)
Number of Lines: 2 (electrical configuration match)
Mounting Type: Through Hole (mechanical compatibility)
Operating Temperature Range: -25°C ~ 105°C (thermal envelope match)
RoHS Status: ROHS3 Compliant (regulatory compliance match)
Series: SN (product family alignment)
Product Status: Active (current availability)

Secondary Electrical Parameters:

Inductance @ 100 kHz (varies by part; determines filtering characteristics)
Current Rating (varies by part; determines power handling capacity)
DC Resistance (varies by part; determines thermal performance)

Substitution is valid when all primary criteria are met. Secondary electrical parameters vary intentionally across the substitute list to provide design options for different inductance, current, and resistance requirements within the same mechanical and regulatory framework.

Parameter Comparison

Part Number	Inductance @ 100 kHz	Current Rating (Max)	DC Resistance (Max)	Mounting Type	Operating Temperature	RoHS Status	Product Status	Inventory (Pcs)
SN14-400	120 µH	5.0 A	0.0450 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	898
SN12-800	250 µH	5.0 A	0.0600 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1090
SN12HP-2201	20 µH	10.0 A	0.0130 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1155
SN14P-300J	80 µH	15.0 A	0.0150 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1071
SN16P-130	10 µH	10.0 A	0.0050 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1027
SN3-100	2.5 µH	3.0 A	0.0250 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1136
SN3-300	20 µH	0.5 A	0.1500 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1332
SN5-1700	12 µH	2.0 A	0.0480 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1360
SN5-5501	80 µH	1.0 A	0.2000 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1247
SN5-700	140 µH	0.9 A	0.2500 ohm	Through Hole	-25°C ~ 105°C	ROHS3 Compliant	Active	1036

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full ROHS3 compliance, ensuring regulatory alignment with the SN14-400. Selection among substitutes depends on application-specific electrical requirements:

For Higher Inductance Applications: SN12-800 (250 µH) and SN5-700 (140 µH) provide increased filtering capability at the cost of higher DC resistance. SN12-800 maintains the 5.0 A current rating of the original part.

For Higher Current Capacity: SN14P-300J (15.0 A) and SN12HP-2201 (10.0 A) accommodate increased current demands with lower DC resistance values, suitable for high-power filtering circuits.

For Lower Inductance Requirements: SN16P-130 (10 µH), SN12HP-2201 (20 µH), and SN3-300 (20 µH) provide reduced inductance for applications requiring minimal filtering or higher frequency response.

For Minimal DC Resistance: SN16P-130 (0.0050 ohm) delivers the lowest resistive losses, critical for low-loss power distribution applications.

All substitute parts share identical mechanical mounting (through-hole, vertical orientation, 2 PC pin configuration) and thermal operating range (-25°C to 105°C), ensuring direct PCB compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can SN14-400 be directly replaced with any substitute part listed?

A: Direct mechanical replacement is possible for all listed parts due to identical mounting type (through-hole), package configuration (vertical, no base, 2 PC pin), and operating temperature range. However, electrical performance differs. Substitution is valid only when the substitute part's inductance, current rating, and DC resistance meet circuit requirements.

Q: What is the primary difference between SN14-400 and SN12-800?

A: SN12-800 provides 250 µH inductance compared to SN14-400's 120 µH, offering stronger filtering at the cost of 0.0150 ohm higher DC resistance. Both maintain 5.0 A current rating and identical thermal/compliance specifications.

Q: Which substitute offers the lowest power loss?

A: SN16P-130 exhibits the lowest DC resistance at 0.0050 ohm, minimizing resistive heating. However, it provides only 10 µH inductance, suitable for applications requiring minimal filtering.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification and REACH Unaffected status, matching the regulatory profile of SN14-400.

Q: What inventory considerations apply to substitution?

A: Current inventory levels vary across the substitute list (898 to 1360 pieces). SN5-1700 and SN3-300 show highest availability, while SN16P-130 and SN5-700 show lower stock levels. Inventory status should be verified at time of procurement.

Q: Can SN14-400 be substituted in high-current applications?

A: SN14-400 is rated for 5.0 A maximum. For applications exceeding this current, SN14P-300J (15.0 A) or SN12HP-2201 (10.0 A) are appropriate substitutes with higher current capacity and lower DC resistance.

Q: What packaging differences exist among substitutes?

A: SN14-400 ships in Tray packaging. Most substitutes also use Tray packaging (SN12-800, SN16P-130). However, SN14P-300J, SN3-100, SN3-300, SN5-1700, and SN5-5501 ship in Bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

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