Equivalent & Substitute Parts for SMM02040C1002DB300

Part Overview

The SMM02040C1002DB300 is a 10 kOhms ±0.5% 0.25W (1/4W) thin film chip resistor in MELF 0204 package format, manufactured by Vishay Beyschlag/BC Components. This component is designed for automotive applications with AEC-Q200 qualification, anti-sulfur coating, and pulse withstanding capability. The part is currently active in production with 3966 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter ranges for this resistor category.

Substiute Parts

SMM02040C1002DB300

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 4042SMM02040C1002DB300 Datasheet

Current PartRFQ

MMA02040C1002DB300

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 6951MMA02040C1002DB300 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMM02040C1002DB300 is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 10 kOhms (exact match required)
• Tolerance: ±0.5% (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Composition: Thin Film (exact match required)

Mechanical Compatibility Requirements:

• Package / Case: MELF 0204 (exact match required)
• Physical dimensions: 0.055" Dia x 0.142" L (1.40mm x 3.60mm) (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Certification Requirements:

• AEC-Q200 automotive qualification (required for automotive applications)
• RoHS3 compliance (required for regulatory conformance)
• Anti-sulfur coating (required for reliability in specified environments)

The substitute part MMA02040C1002DB300 meets all electrical and mechanical compatibility criteria. The primary difference is an increased power rating (0.4W vs. 0.25W) and extended operating temperature range (-55°C ~ 155°C vs. -55°C ~ 125°C), both of which represent enhanced performance characteristics suitable for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Both SMM02040C1002DB300 and MMA02040C1002DB300 are active production parts from the same manufacturer with identical AEC-Q200 automotive qualification and ROHS3 compliance. The substitute part MMA02040C1002DB300 provides enhanced performance through higher power dissipation capability (0.4W vs. 0.25W) and extended maximum operating temperature (155°C vs. 125°C), while maintaining identical electrical specifications and mechanical form factor. Both parts carry anti-sulfur coating and unlimited moisture sensitivity rating (MSL 1). Selection between these parts depends on application thermal requirements and available inventory; the substitute offers greater thermal margin without compromising any specified parameter.

Frequently Asked Questions (FAQ)

Q: Can MMA02040C1002DB300 be used as a direct replacement for SMM02040C1002DB300?

A: Yes. Both parts share identical resistance (10 kOhms), tolerance (±0.5%), temperature coefficient (±50ppm/°C), MELF 0204 package dimensions, and AEC-Q200 automotive qualification. The substitute has higher power rating and extended temperature range, which are compatible with applications designed for the original part.

Q: What is the difference in power rating between these parts?

A: SMM02040C1002DB300 is rated at 0.25W (1/4W), while MMA02040C1002DB300 is rated at 0.4W (2/5W). The higher power rating of the substitute allows greater heat dissipation capability without affecting electrical performance in standard applications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 automotive qualification, anti-sulfur coating, and are ROHS3 compliant, meeting automotive industry standards and environmental regulations.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts are packaged in MELF 0204 format with identical dimensions of 0.055" Dia x 0.142" L (1.40mm x 3.60mm), ensuring mechanical compatibility in PCB layouts and assembly processes.

Q: What is the operating temperature range for each part?

A: SMM02040C1002DB300 operates from -55°C to 125°C. MMA02040C1002DB300 operates from -55°C to 155°C, providing a 30°C higher maximum temperature capability.

Q: Are there any differences in moisture sensitivity or RoHS compliance?

A: No. Both parts have identical Moisture Sensitivity Level 1 (Unlimited) and ROHS3 compliance status, ensuring equivalent reliability and regulatory conformance.