ASPI-0704S-220M-T Equivalent & Substitute Parts

Part Overview

The ASPI-0704S-220M-T is a 22 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 1.23 A continuous current with 110mOhm DC resistance. This surface mount component operates across -40°C to 125°C and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is currently in active production status with 1651 units in stock.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Substiute Parts

ASPI-0704S-220M-T

Abracon LLCIn Stock: 1691ASPI-0704S-220M-T Datasheet

Current PartRFQ

CDRH74NP-220MC-B

Sumida America Components Inc.In Stock: 9473CDRH74NP-220MC-B Datasheet

MFR RecommendedRFQ

RLF7045T-220M1R4-D

TDK CorporationIn Stock: 1788RLF7045T-220M1R4-D Datasheet

MFR RecommendedRFQ

SLF7045T-220M1R3-H

TDK CorporationIn Stock: 9964SLF7045T-220M1R3-H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0704S-220M-T is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 22 µH (±20% tolerance band)
• Current rating: minimum 1.23 A
• DC resistance: maximum 110mOhm
• Shielding: shielded configuration required
• Core material: ferrite
• Mounting: surface mount
• Package footprint: 7.30mm x 7.30mm base dimensions
• RoHS compliance: ROHS3 required

Secondary Compatibility Factors:

• Operating temperature range must encompass or exceed -40°C to 125°C
• Moisture sensitivity level: MSL 1 (unlimited)
• Mechanical height: seated height up to 4.80mm acceptable

All three substitute parts meet the primary matching parameters. Variations in current saturation ratings, inductance test frequency, and upper temperature limits represent acceptable deviations within the scope of component substitution.

Parameter Comparison

Engineering Selection Recommendations

CDRH74NP-220MC-B (Sumida America Components Inc.) is the primary recommended substitute. This part maintains identical electrical specifications to the ASPI-0704S-220M-T with matching current rating, DC resistance, and package footprint. Both components are in active production status. The operating temperature range of -40°C to 100°C is narrower than the original part; applications requiring operation above 100°C must remain on the ASPI-0704S-220M-T. Sumida inventory availability (9400 units) provides supply security.

RLF7045T-220M1R4-D (TDK Corporation) is a secondary substitute suitable for designs where higher current capacity (1.4 A) and lower DC resistance (98.4mOhm) provide performance margin. This part carries AEC-Q200 automotive qualification and extended temperature range to 150°C. However, product status is "Not For New Designs," limiting its use to legacy or maintenance applications. Mechanical dimensions vary slightly (7.30mm x 6.80mm footprint, 4.80mm height).

SLF7045T-220M1R3-H (TDK Corporation) is a tertiary substitute with current rating of 1.3 A and DC resistance of 98.4mOhm. Like the RLF7045T variant, this part is marked "Not For New Designs" and carries AEC-Q200 qualification. Operating temperature range matches the original part (-40°C to 125°C). Package dimensions differ (7.00mm x 7.00mm footprint, 4.80mm height). Packaging format is Cut Tape with Digi-Reel option rather than standard Tape & Reel.

For new designs, CDRH74NP-220MC-B is the preferred substitute. For legacy or automotive applications, RLF7045T-220M1R4-D or SLF7045T-220M1R3-H may be considered if design constraints permit their mechanical and electrical variations.

Frequently Asked Questions (FAQ)

Q: Can CDRH74NP-220MC-B be used as a direct replacement for ASPI-0704S-220M-T?

A: Yes, within the operating temperature range of -40°C to 100°C. Both parts share identical inductance (22 µH), current rating (1.23 A), DC resistance (110mOhm), and package footprint (7.30mm x 7.30mm). If your application requires operation above 100°C, the original ASPI-0704S-220M-T must be used.

Q: What is the difference between the TDK RLF7045T and SLF7045T series?

A: Both are 22 µH shielded ferrite inductors with similar electrical performance. RLF7045T-220M1R4-D provides 1.4 A current rating with 98.4mOhm DCR and operates to 150°C. SLF7045T-220M1R3-H provides 1.3 A current rating with 98.4mOhm DCR and operates to 125°C. Both are marked "Not For New Designs." Package dimensions differ slightly between series.

Q: Why do some substitute parts have lower DC resistance?

A: Lower DC resistance (98.4mOhm versus 110mOhm) represents improved electrical performance and reduced power dissipation. This is an acceptable variation that does not prevent substitution. Applications sensitive to inductor losses may benefit from these alternatives.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. ASPI-0704S-220M-T, CDRH74NP-220MC-B, RLF7045T-220M1R4-D, and SLF7045T-220M1R3-H are all ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.

Q: What does "Not For New Designs" mean for the TDK parts?

A: This product status indicates the manufacturer is not recommending these parts for new circuit designs. They remain available for existing applications and maintenance purposes. For new designs, CDRH74NP-220MC-B or ASPI-0704S-220M-T are preferred.

Q: Do package dimension variations affect PCB layout?

A: Minor variations exist. CDRH74NP-220MC-B matches the original 7.30mm x 7.30mm footprint exactly. RLF7045T-220M1R4-D uses 7.30mm x 6.80mm, and SLF7045T-220M1R3-H uses 7.00mm x 7.00mm. All three have compatible seated heights (4.50mm to 4.80mm). Verify PCB pad spacing accommodates the selected substitute before assembly.

Q: Which substitute has the best inventory availability?

A: SLF7045T-220M1R3-H has the highest current inventory at 9892 units, followed by CDRH74NP-220MC-B at 9400 units. Both provide strong supply security compared to the original part's 1651 units.