SRP1245C-150M Equivalent & Substitute Parts

Part Overview

The SRP1245C-150M is a 15 µH shielded inductor manufactured by Bourns Inc., rated for 9 A continuous current with a maximum DC resistance of 38 mOhm. This surface mount component features a metal core construction and operates across the temperature range of -40°C to 125°C. The part is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent substitute parts is necessary to ensure design continuity and procurement availability for applications requiring this inductance value and current rating.

Substiute Parts

SRP1245C-150M

Bourns Inc.In Stock: 2287SRP1245C-150M Datasheet

Current PartRFQ

SRP1245CC-150M

Bourns Inc.In Stock: 1330SRP1245CC-150M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SRP1245C-150M is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Inductance value: 15 µH
• Inductance tolerance: ±20%
• Continuous current rating: 9 A minimum
• Saturation current (Isat): 13 A minimum
• DC resistance: 38 mOhm maximum
• Frequency characteristics: Self-resonant frequency at 8 MHz

Mechanical Parameters:

• Mounting type: Surface Mount
• Package classification: Nonstandard
• Physical dimensions: 13.50 mm length, maximum 12.60 mm width
• Height seated maximum: 5.00 mm

Environmental & Compliance Parameters:

• Operating temperature range: -40°C to 125°C
• Shielding requirement: Shielded construction
• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)

The SRP1245CC-150M meets all specified parameters and qualifies as a direct substitute for the SRP1245C-150M.

Parameter Comparison

Engineering Selection Recommendations

The SRP1245CC-150M is the qualified substitute for the SRP1245C-150M based on the following engineering criteria:

Electrical Equivalence: Both parts deliver identical inductance (15 µH), current ratings (9 A continuous, 13 A saturation), and DC resistance specifications (38 mOhm maximum). The self-resonant frequency of 8 MHz is maintained across both parts.

Mechanical Compatibility: Physical dimensions are compatible within design tolerances. The substitute part measures 13.50 mm length by 12.50 mm width, compared to the main part's 13.50 mm by 12.60 mm. Both maintain the same 5.00 mm seated height, ensuring PCB layout compatibility.

Compliance Status: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical moisture sensitivity classification (MSL 1 - Unlimited). Environmental operating range remains -40°C to 125°C for both components.

Product Availability: The SRP1245CC-150M carries Active product status with 1229 units in stock, providing supply continuity for the discontinued SRP1245C-150M (Last Time Buy status).

Frequently Asked Questions (FAQ)

Q: Can the SRP1245CC-150M be used as a direct replacement for the SRP1245C-150M in existing designs?

A: Yes. The SRP1245CC-150M meets all electrical, mechanical, and environmental specifications of the SRP1245C-150M. Both parts share identical inductance values, current ratings, DC resistance, operating temperature range, and physical dimensions within acceptable tolerances.

Q: What is the difference between the SRP1245C and SRP1245CC series?

A: The primary difference is core material composition. The SRP1245C-150M uses a metal core, while the SRP1245CC-150M uses a carbonyl powder core. Both constructions deliver equivalent electrical performance across all specified parameters.

Q: Are there any dimensional differences that could affect PCB layout?

A: The width dimension differs by 0.10 mm (12.60 mm versus 12.50 mm). This variation is within standard PCB design tolerances and does not require layout modifications. All other dimensions, including length (13.50 mm) and height (5.00 mm), are identical.

Q: Do both parts have the same RoHS and REACH compliance status?

A: Yes. Both the SRP1245C-150M and SRP1245CC-150M are ROHS3 Compliant and REACH Unaffected, with identical moisture sensitivity classification (MSL 1 - Unlimited).

Q: Why is the SRP1245C-150M designated as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production of this part number. The SRP1245CC-150M is the active production equivalent and is recommended for new designs and procurement.

Q: What is the Q factor specification for the substitute part?

A: The SRP1245CC-150M does not specify a Q factor value in the provided data. The main part SRP1245C-150M specifies Q @ 100 kHz as 20. For applications requiring specific Q factor performance, direct confirmation with the manufacturer is necessary.

Q: Are both parts suitable for high-frequency applications?

A: Both parts maintain a self-resonant frequency of 8 MHz, establishing the upper frequency limit for linear inductor operation. Applications operating below this frequency are suitable for both parts.