Equivalent & Substitute Parts for RN55D3012FBSL

Part Overview

The RN55D3012FBSL is a 30.1 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. This component is part of the Vishay Dale RN55 military-grade resistor series, featuring flame retardant coating, moisture resistance, and safety certification. The part is currently active in production with 687 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

RN55D3012FBSL

Vishay DaleIn Stock: 755RN55D3012FBSL Datasheet

Current PartRFQ

RN55C3012FB14

Vishay DaleIn Stock: 2014RN55C3012FB14 Datasheet

UpgradeRFQ

RN55D3012FB14

Vishay DaleIn Stock: 936RN55D3012FB14 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RN55D3012FBSL are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 30.1 kOhms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Composition: Metal Film

Mechanical Parameters (Must Match):

• Package type: Axial
• Physical dimensions: 0.090" Dia x 0.240" L (2.29mm x 6.10mm)
• Number of terminations: 2

Environmental Parameters (Must Match):

• Operating temperature range: -65°C to 175°C
• Series classification: Military, MIL-R-10509/7, RN55
• Features: Flame Retardant Coating, Military, Moisture Resistant, Safety

Variable Parameter (Allowed Variance):

• Temperature coefficient: ±50ppm/°C to ±100ppm/°C (within acceptable tolerance range for this application category)

All identified substitutes maintain full compatibility across electrical, mechanical, and environmental specifications. The temperature coefficient variance represents an acceptable parameter range within military-grade resistor specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and are available from the manufacturer. Selection between RN55D3012FBSL and its substitutes should be based on the following factors:

RN55C3012FB14 (Upgrade Option): This part offers improved temperature coefficient performance at ±50ppm/°C compared to the main part's ±100ppm/°C specification. This represents enhanced stability across the operating temperature range. Higher inventory availability (1984 units) supports consistent supply chain access.

RN55D3012FB14 (Parametric Equivalent): This part maintains identical electrical and thermal specifications to the main part, including the ±100ppm/°C temperature coefficient. It provides direct functional equivalence with adequate inventory (912 units).

All parts share identical RoHS non-compliance and REACH Affected status, indicating consistent regulatory classification across the substitution group. Military-grade certification and MIL-R-10509/7 compliance are maintained across all options.

Frequently Asked Questions (FAQ)

Q: Can RN55C3012FB14 be used as a direct replacement for RN55D3012FBSL?

A: Yes. Both parts meet all critical electrical and mechanical parameters: 30.1 kOhms ±1% resistance, 0.125W power rating, metal film composition, and identical axial package dimensions. The RN55C3012FB14 features an improved temperature coefficient of ±50ppm/°C versus ±100ppm/°C on the main part, making it suitable for applications requiring enhanced thermal stability.

Q: What is the difference between RN55C3012FB14 and RN55D3012FB14?

A: The primary difference is temperature coefficient: RN55C3012FB14 specifies ±50ppm/°C while RN55D3012FB14 specifies ±100ppm/°C. All other electrical, mechanical, and environmental parameters are identical. Selection depends on application temperature stability requirements.

Q: Are all three parts physically interchangeable?

A: Yes. All three parts share identical physical dimensions (0.090" Dia x 0.240" L / 2.29mm x 6.10mm) and axial package configuration, allowing direct board-level substitution without layout modifications.

Q: Do these parts have the same regulatory compliance?

A: Yes. All three parts share identical RoHS non-compliance and REACH Affected status. Military-grade certification and MIL-R-10509/7 series compliance apply uniformly across all substitutes.

Q: Which substitute offers the best inventory availability?

A: RN55C3012FB14 provides the highest inventory level at 1984 units in stock, followed by RN55D3012FB14 at 912 units, compared to the main part at 687 units.