SN8D-400 Equivalent & Substitute Parts

Part Overview

The SN8D-400 is a 2-line common mode choke (CMC) designed for power line filtering applications. This through-hole component delivers 80 µH inductance at 100 kHz with a maximum current rating of 2A and 72 mOhm DC resistance. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters satisfy the functional requirements of power line filtering circuits while maintaining compatibility with through-hole mounting configurations.

Substiute Parts

SN8D-400

KEMETIn Stock: 803SN8D-400 Datasheet

Current PartRFQ

SN5-400

KEMETIn Stock: 2659SN5-400 Datasheet

Parametric EquivalentRFQ

SN8S-500

KEMETIn Stock: 3118SN8S-500 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN8D-400 are qualified based on the following criteria:

Mandatory Matching Parameters:

• Manufacturer: KEMET
• Series: SN
• Filter Type: Power Line
• Number of Lines: 2
• Current Rating (Max): 2A
• Mounting Type: Through Hole
• Package / Case: Vertical, No Base, 2 PC Pin
• Operating Temperature Range: -25°C ~ 105°C
• Product Status: Active
• RoHS Status: ROHS3 Compliant

Variable Parameters (Allowed Substitution Range):

• Inductance @ Frequency: 48 µH to 80 µH @ 100 kHz
• DC Resistance (DCR) (Max): 58 mOhm to 72 mOhm

The SN5-400 and SN8S-500 meet all mandatory parameters while operating within acceptable inductance and DCR ranges for power line filtering applications.

Parameter Comparison

Engineering Selection Recommendations

SN8D-400 (Primary Selection) The SN8D-400 is the specified component with Active product status and full RoHS3 compliance. This part delivers 80 µH inductance with 72 mOhm DCR and is suitable for applications requiring maximum inductance within the SN series 2-line common mode choke portfolio.

SN8S-500 (Preferred Substitute) The SN8S-500 provides 72 µH inductance at 100 kHz with 68 mOhm DCR. This substitute maintains Active product status and ROHS3 compliance. The inductance differential of 8 µH and DCR reduction of 4 mOhm are within acceptable tolerances for power line filtering. Physical height matches the main part at 0.689" (17.50mm), ensuring PCB layout compatibility.

SN5-400 (Alternative Substitute) The SN5-400 delivers 48 µH inductance at 100 kHz with 58 mOhm DCR. This substitute maintains Active product status and ROHS3 compliance. The inductance is 40% lower than the main part, suitable for applications with reduced filtering requirements. Physical height is 0.571" (14.50mm), which is 0.118" shorter than the main part, requiring PCB layout verification.

All substitute parts maintain identical current ratings (2A), operating temperature ranges (-25°C ~ 105°C), and mounting configurations (through-hole, vertical orientation).

Frequently Asked Questions (FAQ)

Q: Can the SN5-400 replace the SN8D-400 in all applications? A: The SN5-400 has 40% lower inductance (48 µH versus 80 µH). Substitution is valid only when circuit design tolerates reduced filtering performance. The lower DCR (58 mOhm) provides reduced power dissipation. Physical height is 0.118" shorter, requiring PCB layout verification.

Q: What is the primary difference between SN8S-500 and SN8D-400? A: The SN8S-500 provides 72 µH inductance compared to 80 µH in the SN8D-400, representing an 8 µH reduction. DCR is 68 mOhm versus 72 mOhm. Both parts share identical current ratings, operating temperature ranges, and physical height. The SN8S-500 is suitable for applications where the inductance differential is acceptable.

Q: Are all substitute parts through-hole mounted? A: Yes. The SN8D-400, SN8S-500, and SN5-400 are all through-hole mounted components with vertical orientation and 2 PC pin configuration.

Q: Do substitute parts meet the same compliance standards? A: Yes. All three parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.8000.

Q: What is the current rating for all substitute parts? A: All parts, including the main SN8D-400 and substitutes SN8S-500 and SN5-400, have a maximum current rating of 2A.

Q: Does physical size differ between substitute parts? A: The SN8D-400 and SN8S-500 share identical height (0.689" / 17.50mm). The SN5-400 has a reduced height of 0.571" (14.50mm). Diameter and width specifications are 0.630" Dia x 0.433" W for SN8D-400 and 0.630" Dia x 0.354" W for SN8S-500. PCB layout verification is required when substituting the SN5-400.

Q: What is the operating temperature range for all parts? A: All parts operate across -25°C to 105°C, ensuring compatibility across standard industrial and commercial temperature specifications.