RGC0805FTC4K99 Equivalent & Substitute Parts

Part Overview

The RGC0805FTC4K99 is a 4.99 kOhms ±1% thick film chip resistor in 0805 (2012 Metric) package rated at 0.125W (1/8W) power dissipation. Manufactured by Stackpole Electronics Inc, this component is actively produced and RoHS3 compliant. Substitute parts may be required due to inventory availability, application-specific performance requirements, or design upgrades necessitating enhanced electrical characteristics such as improved tolerance or higher power ratings.

Substiute Parts

RGC0805FTC4K99

Stackpole Electronics IncIn Stock: 897RGC0805FTC4K99 Datasheet

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ERJ-PB6B4991V

Panasonic Electronic ComponentsIn Stock: 8545ERJ-PB6B4991V Datasheet

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ERJ-PB6D4991V

Panasonic Electronic ComponentsIn Stock: 8631ERJ-PB6D4991V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RGC0805FTC4K99 are qualified based on the following criteria:

• Identical resistance value: 4.99 kOhms
• Identical package: 0805 (2012 Metric)
• Identical composition: Thick Film
• Identical temperature coefficient: ±50ppm/°C
• Identical operating temperature range: -55°C ~ 155°C
• Identical termination count: 2
• RoHS3 compliance maintained

Substitute parts may differ in tolerance (tighter specifications) and power rating (equal or higher), provided all core electrical and mechanical parameters remain compatible. Both substitute parts are manufactured by Panasonic Electronic Components and carry AEC-Q200 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full compatibility with the RGC0805FTC4K99 in terms of electrical performance and mechanical fit. The ERJ-PB6B4991V and ERJ-PB6D4991V offer enhanced specifications:

• Both substitute parts provide higher power dissipation capacity (0.25W vs. 0.125W), enabling operation in higher thermal environments without derating.
• ERJ-PB6B4991V delivers tighter tolerance (±0.1%) compared to the main part (±1%), suitable for precision circuit applications.
• ERJ-PB6D4991V provides intermediate tolerance (±0.5%) with equivalent power rating upgrade.
• Both substitute parts carry AEC-Q200 automotive qualification and pulse withstanding capability, extending application scope to automotive and industrial environments.
• All parts maintain identical RoHS3 compliance and MSL rating.

Selection between substitute parts depends on tolerance and automotive qualification requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can ERJ-PB6B4991V and ERJ-PB6D4991V be used interchangeably with RGC0805FTC4K99?

A: Yes, both substitute parts are mechanically and electrically compatible. They share identical resistance value, package dimensions, temperature coefficient, and operating temperature range. The primary differences are tolerance specification and power rating, which represent improvements over the original part.

Q: What is the impact of the tighter tolerance in ERJ-PB6B4991V (±0.1% vs. ±1%)?

A: Tighter tolerance reduces resistance value variation across the production batch, improving circuit accuracy and reducing performance drift. This is beneficial in precision analog circuits, measurement applications, and feedback networks where resistance accuracy directly affects circuit behavior.

Q: Are the substitute parts suitable for automotive applications?

A: Yes, both ERJ-PB6B4991V and ERJ-PB6D4991V carry AEC-Q200 qualification and pulse withstanding capability, making them suitable for automotive and industrial applications. The original RGC0805FTC4K99 does not specify automotive qualification.

Q: Will the increased height (0.028" vs. 0.024") of substitute parts cause PCB assembly issues?

A: The height difference of 0.004" (0.10mm) is within typical PCB design tolerances and should not cause assembly or clearance issues. Verify PCB layout constraints if height-critical applications are involved.

Q: Can the higher power rating (0.25W) of substitute parts be used in the same circuit designed for 0.125W?

A: Yes, the higher power rating is a non-limiting upgrade. The substitute parts will operate safely at or below the original power specification. Higher power rating provides thermal margin and extended component life in the same application.

Q: Are all parts RoHS3 compliant?

A: Yes, the main part RGC0805FTC4K99 and both substitute parts ERJ-PB6B4991V and ERJ-PB6D4991V are ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental regulations.