RC1608F1691CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1691CS is a 1.69 kOhm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization requires alternative sourcing, or when design specifications permit selection from qualified alternative manufacturers meeting identical electrical and mechanical parameters.

Substiute Parts

RC1608F1691CS

Samsung Electro-MechanicsIn Stock: 747RC1608F1691CS Datasheet

Current PartRFQ

CR0603-FX-1691ELF

Bourns Inc.In Stock: 16745CR0603-FX-1691ELF Datasheet

DirectRFQ

RC0603FR-071K69L

YAGEOIn Stock: 165221RC0603FR-071K69L Datasheet

DirectRFQ

AC0603FR-071K69L

YAGEOIn Stock: 27867AC0603FR-071K69L Datasheet

SimilarRFQ

CRCW06031K69FKEA

Vishay DaleIn Stock: 5000458CRCW06031K69FKEA Datasheet

SimilarRFQ

ERJ-3EKF1691V

Panasonic Electronic ComponentsIn Stock: 173066ERJ-3EKF1691V Datasheet

SimilarRFQ

RMCF0603FT1K69

Stackpole Electronics IncIn Stock: 613091RMCF0603FT1K69 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F1691CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (1.69 kOhms), tolerance (±1%), power rating (0.1W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C) must be identical.

Mechanical Parameters: Package designation (0603 / 1608 Metric), composition (Thick Film), and number of terminations (2) must match exactly.

Compliance Parameters: RoHS3 compliance and MSL 1 rating are required for all substitutes.

Substitute parts are classified into two categories:

Direct Substitutes: Parts with identical specifications across all electrical, mechanical, and compliance parameters, differing only in manufacturer or packaging format (Tape & Reel vs. Cut Tape).

Similar Substitutes: Parts meeting all core electrical and mechanical requirements but incorporating additional features such as Automotive AEC-Q200 qualification. These parts are electrically and mechanically interchangeable while offering enhanced reliability certifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications):

CR0603-FX-1691ELF (Bourns Inc.) and RC0603FR-071K69L (YAGEO) are direct electrical and mechanical equivalents to the RC1608F1691CS. Both maintain identical resistance, tolerance, power rating, package dimensions, temperature characteristics, and compliance certifications. Selection between these parts and the primary part is based on availability, lead time, and procurement cost without technical differentiation.

Similar Substitutes with Enhanced Qualification (AEC-Q200 Automotive Grade):

AC0603FR-071K69L (YAGEO), CRCW06031K69FKEA (Vishay Dale), ERJ-3EKF1691V (Panasonic Electronic Components), and RMCF0603FT1K69 (Stackpole Electronics Inc) meet all electrical and mechanical requirements of the RC1608F1691CS while incorporating Automotive AEC-Q200 qualification. These parts are electrically and mechanically interchangeable and suitable for applications where automotive-grade reliability is required or preferred.

All listed substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-1691ELF replace RC1608F1691CS in production?

A: Yes. CR0603-FX-1691ELF is a direct substitute meeting identical electrical specifications (1.69 kΩ ±1%, 0.1W), mechanical package (0603), temperature range (-55°C to 155°C), and compliance requirements (ROHS3, MSL 1). Both are supplied in Tape & Reel packaging format.

Q: What is the difference between RC0603FR-071K69L and AC0603FR-071K69L?

A: Both are YAGEO 1.69 kΩ ±1% 0603 resistors with identical electrical characteristics. AC0603FR-071K69L includes Automotive AEC-Q200 qualification and is supplied in Cut Tape & Digi-Reel format, while RC0603FR-071K69L is supplied in Tape & Reel format. The AC variant is suitable for automotive applications requiring enhanced reliability certification.

Q: Are the dimensional tolerances identical across all substitute parts?

A: Core dimensions are equivalent (0603 package standard). Minor variations exist: CRCW06031K69FKEA measures 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" max height, while most others measure 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" max height. These variations remain within 0603 package tolerance and do not affect PCB footprint compatibility.

Q: Can AEC-Q200 qualified parts be used in non-automotive applications?

A: Yes. AEC-Q200 qualification represents enhanced reliability testing and is a superset of standard commercial specifications. Parts such as AC0603FR-071K69L, CRCW06031K69FKEA, ERJ-3EKF1691V, and RMCF0603FT1K69 are fully compatible with non-automotive applications and offer equivalent or superior performance to non-qualified variants.

Q: What packaging format should be selected for high-volume assembly?

A: Tape & Reel format (CR0603-FX-1691ELF, RC0603FR-071K69L, RMCF0603FT1K69) is optimized for automated pick-and-place assembly. Cut Tape & Digi-Reel format (AC0603FR-071K69L, CRCW06031K69FKEA, ERJ-3EKF1691V) is suitable for lower-volume or mixed-component assembly operations.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard lead-free PCB assembly and storage protocols.