RN732ATTD4070C10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4070C10 is a 407 Ohms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component features moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD4070C10

KOA Speer Electronics, Inc.In Stock: 850RN732ATTD4070C10 Datasheet

Current PartRFQ

RN73R2ATTD4070C10

KOA Speer Electronics, Inc.In Stock: 847RN73R2ATTD4070C10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4070C10 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 407 Ohms
• Tolerance: ±0.25%
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±10ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance capability
• RoHS3 compliance

Allowable Variation:

• Power rating may be equal or higher than the original 0.1W specification
• Product status may transition from obsolete to active
• Additional certifications (such as AEC-Q200) may be present in substitute parts without affecting compatibility

The identified substitute RN73R2ATTD4070C10 meets all mandatory matching parameters while offering an increased power rating of 0.125W (1/8W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4070C10 serves as a direct functional substitute for the obsolete RN732ATTD4070C10. Both components maintain identical electrical specifications (407 Ohms ±0.25%, ±10ppm/°C temperature coefficient) and physical dimensions within the 0805 package format.

The substitute part offers the following advantages:

• Active Product Status: RN73R2ATTD4070C10 is currently in active production, ensuring long-term availability and supply chain continuity.
• Enhanced Power Rating: The increased power rating of 0.125W (1/8W) compared to 0.1W (1/10W) provides additional thermal margin without affecting circuit performance in applications designed for the original part.
• Automotive Qualification: AEC-Q200 certification on the substitute part extends applicability to automotive-grade applications while maintaining full compatibility with general industrial and commercial designs.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across manufacturing jurisdictions.

Selection of RN73R2ATTD4070C10 is appropriate for all applications previously specified for RN732ATTD4070C10, with no circuit redesign or re-qualification required.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4070C10 be used as a direct replacement for RN732ATTD4070C10 without circuit modification?

A: Yes. Both parts share identical resistance (407 Ohms), tolerance (±0.25%), temperature coefficient (±10ppm/°C), operating temperature range (-55°C ~ 155°C), and 0805 package dimensions. The substitute part is electrically and mechanically compatible with the original design.

Q: What is the significance of the higher power rating on the substitute part?

A: The RN73R2ATTD4070C10 is rated at 0.125W (1/8W) compared to the original 0.1W (1/10W). This higher rating provides additional thermal dissipation capability and operational margin. Applications designed for 0.1W operation will function within the thermal envelope of the 0.125W part without adverse effects.

Q: Does the AEC-Q200 certification on the substitute part affect its use in non-automotive applications?

A: No. AEC-Q200 certification indicates automotive-grade qualification and represents an additional compliance credential. Parts meeting automotive standards are fully compatible with general industrial, commercial, and consumer applications. The presence of this certification does not restrict use in non-automotive designs.

Q: Are the physical dimensions identical between the two parts?

A: Yes. Both RN732ATTD4070C10 and RN73R2ATTD4070C10 are packaged in 0805 (2012 Metric) format with dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB layout and assembly processes require no modification.

Q: What is the difference between the RN73 and RN73R series designations?

A: The RN73R series represents an updated product line within KOA Speer Electronics' thin film resistor portfolio. RN73R2ATTD4070C10 is the current active equivalent to the obsolete RN732ATTD4070C10, incorporating automotive-grade qualification and enhanced specifications while maintaining backward compatibility.

Q: Are moisture sensitivity levels equivalent between the two parts?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Storage, handling, and assembly processes are identical for both components.