SPD127-563M Equivalent & Substitute Parts

Part Overview

The SPD127-563M is a 56 µH shielded drum core, wirewound inductor manufactured by API Delevan Inc., rated for 2.3 A with a maximum DC resistance of 120 mOhm. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity and procurement planning.

Key Parameters

Parameter	SPD127-563M
Inductance	56 µH
Inductance Tolerance	±20%
Current Rating	2.3 A
DC Resistance (DCR)	120 mOhm Max
Core Material	Ferrite
Shielding	Shielded
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Surface Mount
Package Type	Nonstandard
Size	12.00 mm × 12.00 mm × 8.00 mm (Max Height)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the SPD127-563M are identified based on the following critical parameters that determine functional equivalence:

Inductance Value: 56 µH (exact match required)
Current Rating: Minimum 2.3 A (equal or higher acceptable)
DC Resistance: Maximum 120 mOhm (lower values acceptable)
Core Material: Ferrite (shielded configuration)
Shielding: Shielded (electromagnetic containment requirement)
Mounting Type: Surface Mount
Operating Temperature Range: Minimum -55°C to 125°C coverage
Package Footprint: Nonstandard 12 mm class dimensions

Substitutes are classified into two categories:

Direct Manufacturer Substitute: HRSPD127-563M from API Delevan Inc. represents the direct evolution of the SPD127-563M series, maintaining the same manufacturer lineage with active product status.

Similar Manufacturer Substitutes: CDRH127/HPNP-560MC (Sumida America Components Inc.) and SRR1208-560YL (Bourns Inc.) meet the core electrical and mechanical requirements while offering alternative sourcing options.

Parameter Comparison

Parameter	SPD127-563M	HRSPD127-563M	CDRH127/HPNP-560MC	SRR1208-560YL
Manufacturer	API Delevan Inc.	API Delevan Inc.	Sumida America Components Inc.	Bourns Inc.
Inductance	56 µH	56 µH	56 µH	56 µH
Inductance Tolerance	±20%	±20%	±20%	±15%
Current Rating	2.3 A	2.3 A	2.5 A	2.0 A
Current - Saturation (Isat)	—	2.36 A	3.36 A	2.8 A
DC Resistance (DCR)	120 mOhm Max	110 mOhm Max	105 mOhm Max	110 mOhm Max
Core Material	Ferrite	Ferrite	Ferrite	Ferrite
Shielding	Shielded	Shielded	Shielded	Shielded
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 130°C	-40°C ~ 100°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Type	Nonstandard	Nonstandard	Nonstandard	Nonstandard
Size (L × W × H Max)	12.00 × 12.00 × 8.00 mm	12.07 × 12.07 × 9.02 mm	12.50 × 12.50 × 8.00 mm	12.70 × 12.70 × 8.50 mm
Product Status	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	Non-compliant	—	ROHS3 Compliant

Engineering Selection Recommendations

HRSPD127-563M is the primary substitute choice. It is manufactured by the same supplier (API Delevan Inc.), maintains identical electrical specifications (56 µH, 2.3 A, ±20% tolerance), and carries active product status. The DC resistance is improved (110 mOhm vs. 120 mOhm), and the operating temperature range is extended to -55°C to 130°C. Physical dimensions are nearly identical with minimal height increase (9.02 mm vs. 8.00 mm). This part provides direct design continuity with the obsolete SPD127-563M.

CDRH127/HPNP-560MC is suitable for applications where higher current capacity (2.5 A) and lower DC resistance (105 mOhm) provide performance margin. However, the operating temperature range is reduced to -40°C to 100°C, which may not satisfy designs requiring the full -55°C lower limit. Physical dimensions are slightly larger (12.50 × 12.50 mm footprint).

SRR1208-560YL from Bourns Inc. meets the core electrical requirements with 56 µH inductance and 2.0 A current rating. This part carries ROHS3 compliance, which may be required for certain applications. The inductance tolerance is tighter (±15% vs. ±20%), and the operating temperature range covers -40°C to 125°C. The current rating of 2.0 A is below the original 2.3 A specification and should be evaluated for margin-sensitive applications. Physical dimensions are the largest of the three substitutes (12.70 × 12.70 mm footprint).

Frequently Asked Questions (FAQ)

Q: Can HRSPD127-563M be used as a direct replacement for SPD127-563M?

A: Yes. HRSPD127-563M is the direct manufacturer substitute from API Delevan Inc. It maintains the same inductance (56 µH), current rating (2.3 A), and tolerance (±20%). The DC resistance is improved, and the operating temperature range is extended. Physical dimensions are nearly identical, with only a minor height increase of 1.02 mm.

Q: What is the key difference between the three substitute options?

A: HRSPD127-563M is the direct API Delevan equivalent with identical electrical ratings and active status. CDRH127/HPNP-560MC offers higher current capacity (2.5 A) and lower DC resistance (105 mOhm) but has a reduced operating temperature range (-40°C to 100°C). SRR1208-560YL from Bourns provides ROHS3 compliance and tighter inductance tolerance (±15%) but has a lower current rating (2.0 A) and larger footprint.

Q: Is the physical size difference between substitutes significant?

A: The footprint differences are minor within the 12 mm class (ranging from 12.00 mm to 12.70 mm). Height variations range from 8.00 mm to 9.02 mm. These differences are typically acceptable for surface mount designs with standard PCB clearances. Verify specific board layout constraints before selection.

Q: Which substitute should I choose if my application requires the full -55°C to 125°C temperature range?

A: HRSPD127-563M is the only substitute that maintains the full -55°C to 125°C operating range. CDRH127/HPNP-560MC is limited to -40°C to 100°C, and SRR1208-560YL operates from -40°C to 125°C. For designs requiring -55°C operation, HRSPD127-563M is the appropriate choice.

Q: Does RoHS compliance matter for my selection?

A: RoHS compliance depends on your application requirements and regional regulations. HRSPD127-563M and CDRH127/HPNP-560MC are RoHS non-compliant. SRR1208-560YL is ROHS3 compliant. If RoHS compliance is mandatory, SRR1208-560YL is the only option, provided the 2.0 A current rating meets your design margin requirements.

Q: Can I use SRR1208-560YL if my circuit requires 2.3 A?

A: SRR1208-560YL has a rated current of 2.0 A, which is 0.3 A below the original SPD127-563M specification. This substitution requires circuit analysis to confirm adequate design margin. If the application operates continuously at or near 2.3 A, HRSPD127-563M or CDRH127/HPNP-560MC are more appropriate choices.

Q: What is the difference between DC Resistance values, and why does it matter?

A: DC Resistance (DCR) determines power dissipation in the inductor. SPD127-563M has 120 mOhm maximum; HRSPD127-563M has 110 mOhm; CDRH127/HPNP-560MC has 105 mOhm; SRR1208-560YL has 110 mOhm. Lower DCR reduces heat generation and improves efficiency. All substitutes meet or exceed the original specification.

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