CRL2512-FW-R050ELF Equivalent & Substitute Parts

Part Overview

The CRL2512-FW-R050ELF is a 50 mOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Bourns Inc. This thick film current sense resistor operates across -55°C to 125°C and is ROHS3 compliant with MSL 1 rating. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CRL2512-FW-R050ELF

Bourns Inc.In Stock: 873CRL2512-FW-R050ELF Datasheet

Current PartRFQ

CRF2512-FZ-R050ELF

Bourns Inc.In Stock: 4258CRF2512-FZ-R050ELF Datasheet

DirectRFQ

CSR2512FK50L0

Stackpole Electronics IncIn Stock: 2497CSR2512FK50L0 Datasheet

UpgradeRFQ

CSR2512FT50L0

Stackpole Electronics IncIn Stock: 705CSR2512FT50L0 Datasheet

UpgradeRFQ

CSRN2512FT50L0

Stackpole Electronics IncIn Stock: 1119CSRN2512FT50L0 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CRL2512-FW-R050ELF is determined by the following critical parameters: resistance value (50 mOhms), tolerance (±1%), package type (2512), and termination count (2). The obsolete status of the main part necessitates alternatives that maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories:

Direct Equivalent: Parts maintaining identical electrical specifications and package dimensions within tolerance, differing only in composition or manufacturer.

Upgrade Substitutes: Parts with enhanced power ratings (2W vs 1W) or automotive qualification (AEC-Q200) that provide superior performance while maintaining backward compatibility in the 2512 package footprint.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Active Product, Same Specifications): CRF2512-FZ-R050ELF is the primary direct equivalent from Bourns Inc., maintaining 1W power rating and 2512 package compatibility. This part is active and ROHS3 compliant. The metal element composition and ±50ppm/°C temperature coefficient provide improved stability compared to the original thick film design. Extended operating temperature range to 170°C and AEC-Q200 automotive qualification offer enhanced performance margins.

For Upgraded Performance (Higher Power Rating): CSR2512FK50L0, CSR2512FT50L0, and CSRN2512FT50L0 from Stackpole Electronics Inc provide 2W power rating in the same 2512 package, enabling higher current sense applications. All three are active products with ROHS3 compliance and MSL 1 rating. CSRN2512FT50L0 includes AEC-Q200 automotive qualification for applications requiring automotive-grade reliability.

For Automotive Applications: CSRN2512FT50L0 combines AEC-Q200 certification with 2W power rating and thick film composition, suitable for automotive current sense circuits. CRF2512-FZ-R050ELF provides automotive qualification at 1W rating with metal element construction and superior temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Can CRF2512-FZ-R050ELF directly replace CRL2512-FW-R050ELF? A: Yes. Both parts maintain 50 mOhms ±1% resistance, 1W power rating, and 2512 package. The primary differences are composition (metal element vs thick film) and temperature coefficient (±50ppm/°C vs ±200ppm/°C), which represent performance improvements.

Q: What is the advantage of upgrading to 2W rated parts? A: The CSR2512FK50L0, CSR2512FT50L0, and CSRN2512FT50L0 provide double the power dissipation capability in the same 2512 package footprint, allowing higher current sensing applications without thermal stress.

Q: Are the Stackpole parts compatible with the original Bourns design? A: Yes. All substitute parts maintain the 2512 package, 50 mOhms ±1% specification, and MSL 1 rating. Electrical and mechanical compatibility is preserved across all listed alternatives.

Q: Which part should I select for automotive applications? A: CSRN2512FT50L0 or CRF2512-FZ-R050ELF. Both carry AEC-Q200 automotive qualification. CSRN2512FT50L0 offers 2W power rating, while CRF2512-FZ-R050ELF maintains 1W rating with superior temperature coefficient.

Q: Does composition (thick film vs metal element) affect circuit performance? A: Composition affects temperature coefficient and stability characteristics. Metal element (CRF2512-FZ-R050ELF) provides ±50ppm/°C vs ±200ppm/°C for thick film alternatives, resulting in better temperature stability for precision current sensing applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance.