RN732ATTD2002B10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD2002B10 is a 20 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction with ±10ppm/°C temperature coefficient and operates across -55°C to 155°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure supply availability.

Key Parameters

Parameter	Value
Resistance	20 kOhms
Tolerance	±0.1%
Power Rating	0.1W (1/10W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Critical Parameters (Must Match):

Resistance value: 20 kOhms
Package: 0805 (2012 Metric)
Composition: Thin Film
Temperature Coefficient: ±10ppm/°C
Operating Temperature Range: -55°C to 155°C
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Tolerance: ±0.1% or tighter (±0.05%)
Power Rating: 0.1W or higher (0.125W acceptable)
Packaging format: Tape & Reel, Strip, or bulk
Manufacturer: Different manufacturers permitted
Product Status: Active preferred over obsolete
Certifications: Additional certifications (AEC-Q200) permitted

Substitute parts are grouped into two categories: direct equivalents matching all electrical specifications, and upgrades offering enhanced tolerance or automotive qualification while maintaining core electrical parameters.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff	Temp Range	Package	Status	AEC-Q200
RN732ATTD2002B10	KOA Speer	20 kΩ	±0.1%	0.1	±10ppm/°C	-55 to 155°C	0805	Obsolete	No
RN73R2ATTD2002B10	KOA Speer	20 kΩ	±0.1%	0.125	±10ppm/°C	-55 to 155°C	0805	Active	Yes
1676250-5	TE Connectivity	20 kΩ	±0.1%	0.1	±10ppm/°C	-55 to 155°C	0805	Active	No
RN73C2A20KBTD	TE Connectivity	20 kΩ	±0.1%	0.1	±10ppm/°C	-55 to 155°C	0805	Active	No
RN73C2A20KBTDF	TE Connectivity	20 kΩ	±0.1%	0.1	±10ppm/°C	-55 to 155°C	0805	Active	No
RN73C2A20KBTG	TE Connectivity	20 kΩ	±0.1%	0.1	±10ppm/°C	-55 to 155°C	0805	Active	No
RT0805BRB0720KL	YAGEO	20 kΩ	±0.1%	0.125	±10ppm/°C	-55 to 155°C	0805	Active	No
ERA-6ARB203V	Panasonic	20 kΩ	±0.1%	0.125	±10ppm/°C	-55 to 155°C	0805	Active	Yes
ERA-6ARW203V	Panasonic	20 kΩ	±0.05%	0.125	±10ppm/°C	-55 to 155°C	0805	Active	Yes
RG2012N-203-B-T5	Susumu	20 kΩ	±0.1%	0.125	±10ppm/°C	-55 to 155°C	0805	Active	Yes
RG2012N-203-W-T1	Susumu	20 kΩ	±0.05%	0.125	±10ppm/°C	-55 to 155°C	0805	Active	Yes

Engineering Selection Recommendations

Direct Equivalents (Matching Specifications): RN73C2A20KBTD, RN73C2A20KBTDF, and RN73C2A20KBTG from TE Connectivity provide direct electrical equivalence to the RN732ATTD2002B10. All three maintain 20 kOhms ±0.1% tolerance, 0.1W power rating, and identical thermal characteristics. These parts are in active production with ROHS3 compliance. Selection among these three depends on packaging requirements: RN73C2A20KBTD and RN73C2A20KBTDF are supplied in Tape & Reel format, while RN73C2A20KBTG is available in Strip packaging.

1676250-5 from TE Connectivity (Holsworthy series) also provides direct electrical equivalence with identical specifications and active product status, though RoHS status is not applicable.

Higher Power Rating Alternatives: RN73R2ATTD2002B10 (KOA Speer), RT0805BRB0720KL (YAGEO), ERA-6ARB203V (Panasonic), and RG2012N-203-B-T5 (Susumu) all feature 0.125W (1/8W) power rating while maintaining ±0.1% tolerance and all other critical parameters. These are suitable for applications where thermal margin is beneficial. RN73R2ATTD2002B10, ERA-6ARB203V, and RG2012N-203-B-T5 carry AEC-Q200 automotive qualification.

Enhanced Tolerance Upgrades: ERA-6ARW203V (Panasonic) and RG2012N-203-W-T1 (Susumu) offer ±0.05% tolerance with 0.125W power rating and AEC-Q200 certification. These upgrades provide tighter tolerance specifications while maintaining all other electrical and thermal parameters.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Parts with AEC-Q200 certification (RN73R2ATTD2002B10, ERA-6ARB203V, ERA-6ARW203V, RG2012N-203-B-T5, RG2012N-203-W-T1) are qualified for automotive applications and may be preferred in safety-critical or high-reliability designs.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher power rating (0.125W instead of 0.1W)? A: Yes. Higher power rating provides additional thermal margin without affecting electrical performance. The 0.125W parts (RN73R2ATTD2002B10, RT0805BRB0720KL, ERA-6ARB203V, RG2012N-203-B-T5, ERA-6ARW203V) are fully compatible with designs specified for 0.1W operation.

Q: What is the difference between ±0.1% and ±0.05% tolerance? A: Tolerance specifies the maximum deviation from the nominal 20 kOhms value. ±0.1% allows ±200 ohms deviation (19.8 to 20.2 kOhms), while ±0.05% allows ±100 ohms deviation (19.9 to 20.1 kOhms). Tighter tolerance (±0.05%) is beneficial in precision analog circuits but not required for general applications.

Q: Are all substitute parts available in the same packaging formats? A: No. Most are supplied in Tape & Reel format. RN73C2A20KBTG is available in Strip. Verify packaging availability with your supplier before design finalization.

Q: What does AEC-Q200 certification mean? A: AEC-Q200 is an automotive qualification standard indicating the part meets reliability and performance requirements for automotive applications. Parts with this certification (RN73R2ATTD2002B10, ERA-6ARB203V, ERA-6ARW203V, RG2012N-203-B-T5, RG2012N-203-W-T1) are suitable for automotive and high-reliability designs.

Q: Can I substitute the obsolete RN732ATTD2002B10 with any of these parts? A: Yes. All listed substitute parts maintain the critical electrical parameters (20 kOhms, ±0.1% or tighter tolerance, 0805 package, thin film composition, ±10ppm/°C temperature coefficient, -55°C to 155°C operating range). Selection depends on your specific requirements for power rating, tolerance, packaging format, and automotive qualification.

Q: What is the difference between RN73C2A20KBTD, RN73C2A20KBTDF, and RN73C2A20KBTG? A: These three parts are electrically identical. The difference is in packaging: KBTD and KBTDF are supplied in Tape & Reel, while KBTG is supplied in Strip. Choose based on your assembly process requirements.

Q: Are there any height differences between substitute parts? A: Most parts have maximum seated height of 0.024" to 0.026" (0.60 to 0.65mm). RG2012N-203-B-T5 has a lower profile at 0.020" (0.50mm). Verify height specifications if your design has space constraints.

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