RN732ATTD1720D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1720D50 is a 172 Ohm ±0.5% thin film chip resistor rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component is manufactured by KOA Speer Electronics, Inc. and features moisture-resistant construction with a temperature coefficient of ±50ppm/°C and operating range of -55°C to 155°C. The part is currently classified as obsolete. Locating equivalent or substitute parts is necessary due to the discontinued status of this component, requiring identification of functionally compatible alternatives that maintain the same electrical and mechanical specifications.

Substiute Parts

RN732ATTD1720D50

KOA Speer Electronics, Inc.In Stock: 978RN732ATTD1720D50 Datasheet

Current PartRFQ

RN73R2ATTD1720D50

KOA Speer Electronics, Inc.In Stock: 957RN73R2ATTD1720D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1720D50 is determined by strict adherence to the following critical parameters:

• Resistance value: 172 Ohms (exact match required)
• Tolerance: ±0.5% (exact match required)
• Package format: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (minimum requirement)
• Moisture resistance: Required feature
• RoHS3 compliance: Required

The substitute part RN73R2ATTD1720D50 meets all these criteria. While the power rating differs (0.125W versus 0.1W), the higher power rating of the substitute represents a functional upgrade that maintains compatibility in circuits designed for the original 0.1W specification. Both parts share identical resistance, tolerance, package, composition, temperature coefficient, and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1720D50 is the direct substitute for the obsolete RN732ATTD1720D50. Both parts are manufactured by KOA Speer Electronics, Inc. and maintain identical electrical and mechanical specifications across all critical parameters: resistance value, tolerance, package format, composition, temperature coefficient, and operating temperature range.

The substitute part offers the advantage of active product status, ensuring continued availability and supply chain reliability. The RN73R2ATTD1720D50 includes automotive AEC-Q200 qualification, which provides additional quality assurance beyond the base specification. The higher power rating (0.125W versus 0.1W) presents no compatibility concerns for circuits originally designed for the 0.1W part, as it represents a conservative design margin.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), confirming suitability for standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1720D50 be used as a direct replacement for the RN732ATTD1720D50?

A: Yes. Both parts share identical resistance (172 Ohms), tolerance (±0.5%), package format (0805), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). The substitute part is electrically and mechanically compatible.

Q: What is the significance of the different power ratings?

A: The RN732ATTD1720D50 is rated at 0.1W, while the RN73R2ATTD1720D50 is rated at 0.125W. The higher power rating of the substitute part does not create compatibility issues; it provides additional thermal margin for the same physical package size and is suitable for applications designed for the lower-rated part.

Q: Are there packaging differences between these parts?

A: Both parts use the 0805 (2012 Metric) package format with identical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and maximum seated height (0.024" / 0.60mm). They are mechanically interchangeable on PCBs designed for 0805 components.

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

A: The RN73R series (represented by RN73R2ATTD1720D50) includes automotive AEC-Q200 qualification and is classified as active product. The RN73 series (represented by RN732ATTD1720D50) is now obsolete. Both series share the same thin film construction and electrical specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD1720D50 and RN73R2ATTD1720D50 are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), confirming compliance with environmental and manufacturing standards.