RN55D2003FBSL Equivalent & Substitute Parts

Part Overview

The RN55D2003FBSL is a 200 kOhms ±1% metal film axial through-hole resistor rated at 0.125W (1/8W) manufactured by Vishay Dale. This component belongs to the military-grade RN55 series and features flame retardant coating, moisture resistance, and safety certification. The part is currently active in production with 985 units in stock. Substitute parts are identified to provide options with improved electrical specifications while maintaining mechanical and functional compatibility within the RN55 military series.

Substiute Parts

RN55D2003FBSL

Vishay DaleIn Stock: 1067RN55D2003FBSL Datasheet

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RN55C2003FB14

Vishay DaleIn Stock: 1115RN55C2003FB14 Datasheet

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RN55E2003BB14

Vishay DaleIn Stock: 1520RN55E2003BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution within the RN55 military resistor series is determined by the following allowable parameters:

• Resistance Value: Must remain 200 kOhms (exact match required)
• Power Rating: Must remain 0.125W / 1/8W (exact match required)
• Package Type: Must remain Axial (exact match required)
• Physical Dimensions: Must remain 0.090" Dia x 0.240" L (exact match required)
• Operating Temperature Range: Must remain -65°C ~ 175°C (exact match required)
• Composition: Must remain Metal Film (exact match required)
• Series Compliance: Must belong to RN55 military series with MIL-R-10509/7 certification

Allowable Variations:

• Tolerance may be tighter (lower values acceptable)
• Temperature Coefficient may be lower (improved stability acceptable)

Two substitute parts meet these criteria: RN55C2003FB14 and RN55E2003BB14, both offering improved tolerance and temperature coefficient specifications while maintaining full mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

RN55D2003FBSL remains the baseline specification. Selection of substitute parts depends on application requirements:

RN55C2003FB14 provides improved temperature coefficient (±50ppm/°C vs ±100ppm/°C) while maintaining ±1% tolerance. This part is suitable for applications requiring enhanced thermal stability without stricter tolerance requirements.

RN55E2003BB14 offers the highest precision with ±0.1% tolerance and ±25ppm/°C temperature coefficient. This part is suitable for precision measurement circuits, calibration networks, and applications where component drift must be minimized across the operating temperature range.

All three parts maintain identical mechanical compatibility, military certification status (MIL-R-10509/7), and RoHS non-compliant status. Selection should be based on the specific tolerance and temperature stability requirements of the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can RN55C2003FB14 or RN55E2003BB14 be used as direct replacements for RN55D2003FBSL?

A: Yes. Both substitute parts are mechanically and electrically compatible. They share identical resistance value (200 kOhms), power rating (0.125W), package type (Axial), physical dimensions (0.090" Dia x 0.240" L), and operating temperature range (-65°C ~ 175°C). The substitutes offer improved specifications (tighter tolerance and lower temperature coefficient), making them suitable for direct board-level replacement.

Q: What is the difference between the three parts?

A: The primary differences are tolerance and temperature coefficient. RN55D2003FBSL specifies ±1% tolerance with ±100ppm/°C drift. RN55C2003FB14 maintains ±1% tolerance but reduces drift to ±50ppm/°C. RN55E2003BB14 provides the tightest tolerance at ±0.1% with the lowest drift at ±25ppm/°C. All other electrical and mechanical parameters remain identical.

Q: Are there any compliance or certification differences?

A: No. All three parts are manufactured by Vishay Dale, belong to the RN55 military series, comply with MIL-R-10509/7, and share identical RoHS non-compliant and REACH Affected status. Compliance certifications are equivalent across all three parts.

Q: Which substitute should I select for a new design?

A: Selection depends on circuit requirements. For general-purpose applications, RN55D2003FBSL is acceptable. For circuits sensitive to component drift over temperature, RN55C2003FB14 is recommended. For precision analog circuits requiring minimal resistance variation, RN55E2003BB14 is the appropriate choice.

Q: Are the physical dimensions identical for all three parts?

A: Yes. All three parts share identical axial package dimensions of 0.090" Dia x 0.240" L (2.29mm x 6.10mm). They are mechanically interchangeable on PCBs designed for the RN55 axial resistor form factor.