RC1608F4993CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F4993CS is a 499 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is specified for general industrial applications requiring moisture-resistant thick film construction across an operating temperature range of -55°C to 155°C.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when design flexibility permits selection from multiple qualified sources meeting identical electrical and mechanical specifications.

Substiute Parts

RC1608F4993CS

Samsung Electro-MechanicsIn Stock: 945RC1608F4993CS Datasheet

Current PartRFQ

CR0603-FX-4993ELF

Bourns Inc.In Stock: 172359CR0603-FX-4993ELF Datasheet

DirectRFQ

AC0603FR-07499KL

YAGEOIn Stock: 52411AC0603FR-07499KL Datasheet

SimilarRFQ

CRCW0603499KFKEA

Vishay DaleIn Stock: 137181CRCW0603499KFKEA Datasheet

SimilarRFQ

CRCW0603499KFKEB

Vishay DaleIn Stock: 20863CRCW0603499KFKEB Datasheet

SimilarRFQ

CRCW0603499KFKTA

Vishay DaleIn Stock: 26478CRCW0603499KFKTA Datasheet

SimilarRFQ

ERJ-3EKF4993V

Panasonic Electronic ComponentsIn Stock: 80470ERJ-3EKF4993V Datasheet

SimilarRFQ

RMCF0603FT499K

Stackpole Electronics IncIn Stock: 439157RMCF0603FT499K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F4993CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 499 kOhms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Package: 0603 (1608 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture sensitivity level: 1 (Unlimited)
• Number of terminations: 2

All substitute parts listed below meet these mandatory parameters. Variations in physical dimensions (length, width, height) within standard 0603 package tolerances, packaging format (Tape & Reel versus Cut Tape), and compliance certifications (RoHS status, REACH status) do not disqualify substitution eligibility but are noted for design and procurement considerations.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

CR0603-FX-4993ELF (Bourns Inc.), AC0603FR-07499KL (YAGEO), CRCW0603499KFKEA (Vishay Dale), ERJ-3EKF4993V (Panasonic Electronic Components), and RMCF0603FT499K (Stackpole Electronics Inc) are all qualified substitutes with Active product status and full ROHS3 compliance. These parts are suitable for direct replacement in applications where RoHS3 compliance is a design requirement.

Conditional Substitutes:

CRCW0603499KFKEB (Vishay Dale) carries Discontinued at DiGi Electronics status and should be avoided for new procurement unless existing inventory is available and long-term supply is not a concern.

CRCW0603499KFKTA (Vishay Dale) is RoHS non-compliant and REACH Affected. This part is suitable only for applications where RoHS3 compliance is not required and regulatory restrictions do not apply.

Compliance Considerations:

All ROHS3-compliant substitutes are electrically and mechanically interchangeable with the RC1608F4993CS. Selection among compliant alternatives may be based on packaging format preference (Tape & Reel versus Cut Tape), inventory availability, or supplier relationship optimization.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-4993ELF replace RC1608F4993CS in existing designs?

A: Yes. CR0603-FX-4993ELF meets all mandatory electrical and mechanical parameters: 499 kOhms ±1%, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and MSL 1. Both parts are ROHS3 compliant and Active status.

Q: What is the difference between CRCW0603499KFKEA and CRCW0603499KFKTA?

A: Both parts are electrically identical (499 kΩ ±1%, 0.1W, 0603 package). The primary difference is compliance status: CRCW0603499KFKEA is ROHS3 compliant, while CRCW0603499KFKTA is RoHS non-compliant and REACH Affected. Selection depends on regulatory requirements for the end application.

Q: Are there physical dimension differences between substitute parts?

A: Minor variations exist within standard 0603 package tolerances. RC1608F4993CS and ERJ-3EKF4993V specify 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" height. CRCW variants specify 0.061-0.063" L x 0.033" W (1.55-1.60mm x 0.85mm) with 0.020" height. RMCF0603FT499K specifies 0.061" L x 0.031" W (1.55mm x 0.80mm) with 0.022" height. These variations are within standard 0603 package specifications and do not affect PCB layout compatibility.

Q: Why is CRCW0603499KFKEB listed as discontinued?

A: CRCW0603499KFKEB is marked Discontinued at DiGi Electronics, indicating removal from active distribution channels. While electrically equivalent, procurement may be difficult. CRCW0603499KFKEA is the recommended active alternative from Vishay Dale.

Q: Which substitute has the highest inventory availability?

A: RMCF0603FT499K (Stackpole Electronics Inc) shows 439,141 pieces in stock, the highest among all listed substitutes. CR0603-FX-4993ELF (Bourns Inc.) shows 172,298 pieces.

Q: Can I use CRCW0603499KFKTA in a RoHS-regulated application?

A: No. CRCW0603499KFKTA is RoHS non-compliant and REACH Affected. Use only in applications where RoHS3 compliance is not required and regulatory restrictions do not apply. For RoHS-regulated designs, select from ROHS3-compliant alternatives.

Q: Are all substitutes suitable for automotive applications?

A: AC0603FR-07499KL, CRCW0603499KFKEA, CRCW0603499KFKTA, ERJ-3EKF4993V, and RMCF0603FT499K carry AEC-Q200 automotive qualification. RC1608F4993CS and CR0603-FX-4993ELF do not specify AEC-Q200 rating. For automotive applications requiring AEC-Q200 qualification, select from the five AEC-Q200 qualified alternatives.