CSR1206FTR680 Equivalent & Substitute Parts

Part Overview

The CSR1206FTR680 is a 680 mOhms ±1% 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 tight tolerance and stable performance across industrial temperature ranges. The part is Active status with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent parts are necessary to ensure supply chain continuity, manage inventory optimization, and maintain design flexibility across manufacturing locations.

Substiute Parts

CSR1206FTR680

Stackpole Electronics IncIn Stock: 983CSR1206FTR680 Datasheet

Current PartRFQ

CRM1206-FX-R680ELF

Bourns Inc.In Stock: 24421CRM1206-FX-R680ELF Datasheet

DirectRFQ

RCWE1206R680FKEA

Vishay DaleIn Stock: 34149RCWE1206R680FKEA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206FTR680 is determined by strict equivalence across the following critical parameters:

• Resistance value: 680 mOhms
• Tolerance: ±1%
• Power rating: 0.5W minimum
• Package type: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C minimum
• Current sense application capability
• RoHS3 compliance
• MSL rating: 1 or better

Two substitute parts meet these criteria: CRM1206-FX-R680ELF (Bourns Inc.) and RCWE1206R680FKEA (Vishay Dale). Both maintain identical electrical specifications and package dimensions within acceptable mechanical tolerances. The Vishay Dale part includes additional AEC-Q200 automotive qualification and moisture-resistant features.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status with ROHS3 compliance and identical electrical performance specifications. Selection between CSR1206FTR680, CRM1206-FX-R680ELF, and RCWE1206R680FKEA depends on application-specific requirements:

For general industrial current sensing applications with standard environmental conditions, CRM1206-FX-R680ELF (Bourns) and CSR1206FTR680 (Stackpole) are functionally equivalent with minimal dimensional variation within standard PCB assembly tolerances.

For automotive applications or systems requiring enhanced moisture resistance and AEC-Q200 qualification, RCWE1206R680FKEA (Vishay Dale) is the appropriate selection. The additional 0.002" (0.05mm) height and moisture-resistant construction provide enhanced reliability in demanding environments.

Mechanical fit verification is recommended for designs with tight height constraints, as RCWE1206R680FKEA has a maximum seated height of 0.028" compared to 0.026" for the other two parts.

Frequently Asked Questions (FAQ)

Q: Can CRM1206-FX-R680ELF replace CSR1206FTR680 in existing designs?

A: Yes. Both parts share identical electrical specifications (680 mOhms ±1%, 0.5W, ±100ppm/°C, -55°C to 155°C) and 1206 package classification. Dimensional differences (0.002" length and width) fall within standard PCB assembly tolerances and do not affect circuit performance or board layout.

Q: What is the primary difference between RCWE1206R680FKEA and the other two parts?

A: RCWE1206R680FKEA includes AEC-Q200 automotive qualification and moisture-resistant construction. Electrically and functionally equivalent, it is specified for automotive and high-reliability applications. Maximum seated height is 0.028" versus 0.026" for alternatives.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements for industrial and commercial applications.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, with height verification. Standard PCB assembly processes accommodate the dimensional variations. For designs with height-constrained layouts, confirm that 0.028" maximum height (RCWE1206R680FKEA) does not conflict with component clearance requirements.

Q: What is the significance of the ±1% tolerance specification?

A: The ±1% tolerance ensures precise current sensing accuracy in low-resistance applications. All three parts maintain this specification, making them suitable for precision measurement and control circuits requiring tight resistance values.