RN55D4752FBSL Equivalent & Substitute Parts

Part Overview

The RN55D4752FBSL is a 47.5 kOhms ±1% metal film axial resistor rated at 0.125W (1/8W) manufactured by Vishay Dale. This component is part of the military-grade RN55 series, featuring flame retardant coating, moisture resistance, and safety certification. The part is currently active in production with 736 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific performance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RN55D4752FBSL

Vishay DaleIn Stock: 840RN55D4752FBSL Datasheet

Current PartRFQ

RN55E4752BB14

Vishay DaleIn Stock: 1696RN55E4752BB14 Datasheet

UpgradeRFQ

RN55D4752FB14

Vishay DaleIn Stock: 1975RN55D4752FB14 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55D4752FBSL is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 47.5 kOhms
• Power rating: 0.125W (1/8W)
• Package type: Axial
• Physical dimensions: 0.090" Dia x 0.240" L
• Operating temperature range: -65°C to 175°C
• Composition: Metal Film
• Series: RN55 military-grade

Allowable Variation Parameters:

• Tolerance: ±1% or tighter (±0.1%)
• Temperature coefficient: ±100ppm/°C or lower (±25ppm/°C)

Substitute parts maintain identical electrical performance in nominal conditions while offering improved tolerance or temperature stability characteristics. All identified substitutes are manufactured by Vishay Dale within the RN55 military series and comply with MIL-R-10509/7 specifications.

Parameter Comparison

Engineering Selection Recommendations

RN55D4752FB14 (Parametric Equivalent): This part is electrically and mechanically identical to the RN55D4752FBSL. Both components share identical tolerance (±1%), temperature coefficient (±100ppm/°C), and all critical electrical parameters. Selection of RN55D4752FB14 is appropriate for direct replacement in applications where the main part number is unavailable. Higher inventory availability (1875 units) supports procurement continuity.

RN55E4752BB14 (Upgrade Substitute): This part offers improved tolerance specification (±0.1% versus ±1%) and superior temperature stability (±25ppm/°C versus ±100ppm/°C) while maintaining identical resistance value, power rating, package type, and physical dimensions. RN55E4752BB14 is suitable for applications requiring tighter tolerance control or enhanced temperature coefficient performance. This upgrade classification reflects enhanced precision characteristics within the same military-grade RN55 series. Inventory availability is 1599 units.

All substitute parts maintain RoHS non-compliant status, REACH affected classification, and military-grade specifications consistent with the main part number.

Frequently Asked Questions (FAQ)

Q: Can RN55D4752FB14 be used as a direct replacement for RN55D4752FBSL?

A: Yes. RN55D4752FB14 is a parametric equivalent with identical electrical specifications (47.5 kOhms ±1%, 0.125W, ±100ppm/°C) and mechanical compatibility (axial package, 0.090" Dia x 0.240" L). Both parts are manufactured by Vishay Dale within the RN55 military series and comply with MIL-R-10509/7.

Q: What is the difference between RN55D4752FB14 and RN55E4752BB14?

A: The primary differences are tolerance and temperature coefficient. RN55E4752BB14 provides ±0.1% tolerance compared to ±1% in RN55D4752FB14, and ±25ppm/°C temperature coefficient compared to ±100ppm/°C. Both maintain identical resistance value (47.5 kOhms), power rating (0.125W), and physical dimensions. RN55E4752BB14 is classified as an upgrade substitute for applications requiring higher precision.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All three parts (RN55D4752FBSL, RN55D4752FB14, and RN55E4752BB14) share identical physical dimensions (0.090" Dia x 0.240" L) and axial package configuration, ensuring mechanical and footprint compatibility.

Q: What is the operating temperature range for these resistors?

A: All parts operate across -65°C to 175°C, supporting military and high-reliability applications across extended temperature environments.

Q: Are these parts RoHS compliant?

A: No. All three parts are RoHS non-compliant and REACH affected, consistent with military-grade specifications in the RN55 series.