CSR1206FK36L0 Equivalent & Substitute Parts

Part Overview

The CSR1206FK36L0 is a 36 milliohm, ±1% tolerance, 0.5W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This current sense resistor is designed for precision low-resistance applications requiring high accuracy and thermal stability. The part is Active status and widely used in power management, battery charging, and motor control circuits where accurate current measurement is critical. Substitute parts may be required due to inventory constraints, supply chain disruptions, or application-specific requirements such as automotive qualification.

Substiute Parts

CSR1206FK36L0

Stackpole Electronics IncIn Stock: 1002CSR1206FK36L0 Datasheet

Current PartRFQ

UCR18EVHFSR036

Rohm SemiconductorIn Stock: 6224UCR18EVHFSR036 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206FK36L0 is determined by strict equivalence across the following critical parameters:

• Resistance value: 36 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W minimum
• Package: 1206 (3216 Metric) form factor
• Composition: Thick film construction
• Operating temperature range: -55°C to +155°C minimum
• RoHS3 compliance
• MSL rating: 1 or better

The UCR18EVHFSR036 from Rohm Semiconductor meets all mandatory substitution criteria. This part maintains identical electrical specifications while adding automotive AEC-Q200 qualification, making it suitable for both commercial and automotive applications.

Parameter Comparison

Engineering Selection Recommendations

The UCR18EVHFSR036 is a direct functional equivalent to the CSR1206FK36L0 for all standard commercial applications. Both parts maintain identical electrical performance, package footprint, and thermal characteristics within the specified operating range.

For automotive applications or systems requiring AEC-Q200 qualification, the UCR18EVHFSR036 provides additional assurance through formal automotive-grade testing and qualification. The slightly wider temperature coefficient range (0/+200 ppm/°C versus ±100 ppm/°C) remains within acceptable limits for current sense applications and does not compromise circuit performance in the specified temperature range.

Both parts carry ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard PCB assembly processes and long-term storage without moisture sensitivity concerns.

Frequently Asked Questions (FAQ)

Q: Can UCR18EVHFSR036 be used as a direct replacement for CSR1206FK36L0 in existing designs?

A: Yes. Both parts share identical resistance (36 mOhms), tolerance (±1%), power rating (0.5W), package (1206), and operating temperature range (-55°C to +155°C). The physical dimensions are compatible with standard 1206 PCB pads. No circuit redesign is required.

Q: What is the difference in temperature coefficient between these parts?

A: The CSR1206FK36L0 specifies ±100 ppm/°C, while the UCR18EVHFSR036 specifies 0/+200 ppm/°C. Both coefficients are acceptable for current sense applications within the -55°C to +155°C operating range. The difference does not impact circuit functionality for standard power management and battery charging applications.

Q: Does the AEC-Q200 qualification on the UCR18EVHFSR036 affect its use in non-automotive applications?

A: No. AEC-Q200 qualification is an additional quality assurance measure that does not restrict use in commercial applications. The UCR18EVHFSR036 is fully compatible with non-automotive designs and offers enhanced reliability documentation.

Q: Are the physical dimensions identical between these parts?

A: The parts are functionally equivalent in the 1206 package. The CSR1206FK36L0 measures 0.120" L × 0.061" W (3.05mm × 1.55mm), while the UCR18EVHFSR036 measures 0.126" L × 0.063" W (3.20mm × 1.60mm). Both fit standard 1206 PCB footprints with no assembly issues. Height is identical at 0.026" (0.65mm) maximum.

Q: Are both parts RoHS compliant?

A: Yes. Both CSR1206FK36L0 and UCR18EVHFSR036 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage requirements.