RN732ATTD2002F100 Equivalent & Substitute Parts

Part Overview

The RN732ATTD2002F100 is a 20 kOhms ±1% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) surface mount package. This part is classified as Obsolete product status. Due to obsolescence and limited availability, equivalent substitute parts with matching or superior electrical and mechanical specifications are required for ongoing production and design continuity. Substitute parts maintain the same resistance value, tolerance, package form factor, and operating temperature range while offering active product status and improved availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	RN732ATTD2002F100
Manufacturer	KOA Speer Electronics, Inc.
Resistance	20 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Composition	Thin Film
Package / Case	0805 (2012 Metric)
Operating Temperature	-55°C ~ 155°C
Temperature Coefficient	±100ppm/°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for RN732ATTD2002F100 are selected based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Resistance value: 20 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Operating temperature range: -55°C ~ 155°C minimum (equal or extended range acceptable)

Secondary Compatibility Criteria:

Power rating: 0.1W or higher (equal or upgraded rating acceptable)
Temperature coefficient: ±100ppm/°C or better (lower values acceptable)
Moisture sensitivity: MSL 1 (Unlimited) (exact match required)
RoHS compliance: ROHS3 Compliant (preferred for regulatory alignment)

Substitute parts are grouped into two categories: Direct Substitutes (same power rating or minimal upgrade) and Upgrade Substitutes (higher power rating or improved specifications). All substitute parts maintain identical package dimensions and termination configuration, ensuring direct PCB compatibility without layout modifications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Product Status	RoHS
RN732ATTD2002F100	KOA Speer	20k	±1%	0.1	±100	-55 ~ 155	0805	Obsolete	ROHS3
RN73R2ATTD2002F100	KOA Speer	20k	±1%	0.125	±100	-55 ~ 155	0805	Active	ROHS3
MCU08050C2002FP500	Vishay Beyschlag	20k	±1%	0.125	±50	-55 ~ 155	0805	Active	ROHS3
MCU08050C2002FPW00	Vishay Beyschlag	20k	±1%	0.125	±50	-55 ~ 155	0805	Active	ROHS3
PNM0805E2002FBT0	Vishay Dale	20k	±1%	0.2	±25	-55 ~ 155	0805	Active	Non-compliant
RNCF0805FTE20K0	Stackpole	20k	±1%	0.25	±25	-55 ~ 155	0805	Active	ROHS3
RNCP0805FTD20K0	Stackpole	20k	±1%	0.25	±100	-55 ~ 155	0805	Active	ROHS3
RT0805FRD0720KL	YAGEO	20k	±1%	0.125	±25	-55 ~ 155	0805	Active	ROHS3
RT0805FRE0720KL	YAGEO	20k	±1%	0.125	±50	-55 ~ 155	0805	Active	ROHS3
TNPW080520K0BETA	Vishay Dale	20k	±0.1%	0.125	±25	-55 ~ 125	0805	Active	Non-compliant
TNPW080520K0FEEA	Vishay Dale	20k	±1%	0.26	±25	-55 ~ 175	0805	Active	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Minimum Specification Match):

RN73R2ATTD2002F100 (KOA Speer) is the primary direct substitute. It maintains identical resistance, tolerance, and package specifications with a minor power rating upgrade (0.125W vs. 0.1W). Active product status and ROHS3 compliance ensure long-term availability and regulatory alignment. Temperature coefficient remains at ±100ppm/°C, matching the original specification.

RT0805FRD0720KL and RT0805FRE0720KL (YAGEO) provide equivalent functionality with improved temperature coefficients (±25ppm/°C and ±50ppm/°C respectively). Both maintain 0.125W power rating and ROHS3 compliance with active product status.

MCU08050C2002FP500 and MCU08050C2002FPW00 (Vishay Beyschlag) offer 0.125W power rating with superior temperature coefficient (±50ppm/°C) and ROHS3 compliance. These parts are functionally equivalent with enhanced performance characteristics.

Upgrade Substitutes (Enhanced Specifications):

RNCP0805FTD20K0 (Stackpole) provides 0.25W power rating with ROHS3 compliance and active status. Temperature coefficient matches the original at ±100ppm/°C, suitable for applications requiring higher power dissipation margin.

RNCF0805FTE20K0 (Stackpole) offers 0.25W power rating with improved temperature coefficient (±25ppm/°C), AEC-Q200 automotive qualification, and ROHS3 compliance.

TNPW080520K0FEEA (Vishay Dale) provides the highest power rating (0.26W) with extended operating temperature range (-55°C ~ 175°C), improved temperature coefficient (±25ppm/°C), AEC-Q200 automotive qualification, and ROHS3 compliance. This part is suitable for demanding applications requiring thermal margin and automotive-grade reliability.

PNM0805E2002FBT0 (Vishay Dale) offers 0.2W power rating with superior temperature coefficient (±25ppm/°C) but carries RoHS non-compliance status, limiting suitability for regulated applications.

TNPW080520K0BETA (Vishay Dale) provides superior tolerance (±0.1% vs. ±1%) with 0.125W power rating and ±25ppm/°C temperature coefficient. However, RoHS non-compliance and reduced operating temperature range (-55°C ~ 125°C) restrict its application scope.

Selection Priority:

For direct replacement with active product status and full regulatory compliance: RN73R2ATTD2002F100, RT0805FRE0720KL, or MCU08050C2002FPW00.

For applications requiring enhanced thermal performance: TNPW080520K0FEEA or RNCF0805FTE20K0.

For cost-optimized solutions with adequate performance margin: RNCP0805FTD20K0.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD2002F100 directly replace RN732ATTD2002F100 without circuit modification?

A: Yes. RN73R2ATTD2002F100 maintains identical resistance (20 kOhms), tolerance (±1%), package (0805), and operating temperature range (-55°C ~ 155°C). The power rating upgrade from 0.1W to 0.125W is backward compatible and does not require circuit changes. Both parts are thin film composition with MSL 1 moisture sensitivity.

Q: What is the difference between the MCU08050C2002FP500 and MCU08050C2002FPW00 variants?

A: Both parts are electrically and mechanically identical with 20 kOhms ±1%, 0.125W power rating, ±50ppm/°C temperature coefficient, and 0805 package. The suffix difference (FP500 vs. FPW00) indicates packaging or tape configuration variants. Selection depends on procurement and assembly equipment compatibility.

Q: Why do some substitute parts have lower temperature coefficients?

A: Temperature coefficient (ppm/°C) indicates resistance value drift across the operating temperature range. Lower values (±25ppm/°C vs. ±100ppm/°C) represent superior stability and are acceptable substitutes. Applications sensitive to resistance variation benefit from lower temperature coefficients, while general-purpose circuits tolerate higher values.

Q: Is TNPW080520K0BETA suitable as a substitute despite RoHS non-compliance?

A: TNPW080520K0BETA offers superior tolerance (±0.1%) and temperature coefficient (±25ppm/°C) but carries RoHS non-compliance status. It is suitable only for applications without RoHS regulatory requirements. For regulated industries or export markets requiring ROHS3 compliance, alternative parts with compliant status are required.

Q: Can higher power-rated parts (0.2W, 0.25W, 0.26W) be used in circuits designed for 0.1W resistors?

A: Yes. Higher power ratings are backward compatible. A 0.25W resistor dissipates the same power as a 0.1W resistor in identical circuit conditions; the higher rating provides thermal margin and reliability improvement. Physical dimensions remain within 0805 package specifications, ensuring PCB compatibility.

Q: What is the significance of AEC-Q200 qualification in RNCF0805FTE20K0 and TNPW080520K0FEEA?

A: AEC-Q200 is an automotive industry qualification standard ensuring reliability under automotive environmental and thermal stress conditions. Parts with this certification are suitable for automotive applications and high-reliability industrial designs. Non-automotive applications do not require this certification but benefit from the enhanced qualification testing.

Q: Are all substitute parts available in Tape & Reel (TR) packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel packaging, standard for automated assembly processes. This packaging format is compatible with standard pick-and-place equipment and reflow soldering workflows.

Q: How does the extended operating temperature range of TNPW080520K0FEEA (-55°C ~ 175°C) affect substitution suitability?

A: Extended temperature range indicates the part maintains specifications across a wider thermal envelope. For applications operating within the original range (-55°C ~ 155°C), this extended range provides additional thermal margin without affecting performance. For applications requiring operation above 155°C, this part is the only suitable substitute from the list.

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