RN732ATTD1200D100 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1200D100 is a 120 Ohm ±0.5% thin film chip resistor manufactured by KOA Speer Electronics in 0805 (2012 Metric) package format with 0.1W power rating. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The RN732ATTD1200D100 features moisture-resistant construction suitable for general industrial and commercial applications operating across -55°C to 155°C temperature range.

Key Parameters

Parameter	Value
Resistance	120 Ohms
Tolerance	±0.5%
Power Rating	0.1W (1/10W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Operating Temperature	-55°C ~ 155°C
Temperature Coefficient	±100ppm/°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD1200D100 is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 120 Ohms
Tolerance: ±0.5%
Package / Case: 0805 (2012 Metric)
Composition: Thin Film
Operating Temperature Range: -55°C minimum to 155°C maximum
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

Power Rating: May be equal or higher (0.1W, 0.125W, or 0.25W acceptable)
Temperature Coefficient: May vary (±5ppm/°C to ±100ppm/°C acceptable)
Features: May include additional certifications (AEC-Q200, Anti-Sulfur, Current Sense)
Product Status: Active status preferred for long-term availability

Substitute parts are grouped into three categories based on power rating upgrade levels while maintaining all mandatory electrical and mechanical compatibility parameters.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Temp Coeff	Operating Temp	Product Status	Features
RN732ATTD1200D100	KOA Speer	120 Ω	±0.5%	0.1W	±100ppm/°C	-55°C ~ 155°C	Obsolete	Moisture Resistant
RN73R2ATTD1200D100	KOA Speer	120 Ω	±0.5%	0.125W	±100ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200, Moisture Resistant
AT0805DRE07120RL	YAGEO	120 Ω	±0.5%	0.125W	±50ppm/°C	-55°C ~ 155°C	Active	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant
CRT0805-DZ-1200ELF	Bourns Inc.	120 Ω	±0.5%	0.125W	±50ppm/°C	-55°C ~ 155°C	Active	Current Sense
RG2012N-121-D-T5	Susumu	120 Ω	±0.5%	0.125W	±10ppm/°C	-55°C ~ 155°C	Active	Anti-Sulfur, Automotive AEC-Q200
RG2012P-121-D-T5	Susumu	120 Ω	±0.5%	0.125W	±25ppm/°C	-55°C ~ 155°C	Active	Anti-Sulfur, Automotive AEC-Q200
RG2012V-121-D-T5	Susumu	120 Ω	±0.5%	0.125W	±5ppm/°C	-55°C ~ 155°C	Active	Anti-Sulfur, Automotive AEC-Q200
RNCF0805DKE120R	Stackpole Electronics	120 Ω	±0.5%	0.25W	±25ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200
RNCF0805DTC120R	Stackpole Electronics	120 Ω	±0.5%	0.25W	±50ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200
RNCF0805DTE120R	Stackpole Electronics	120 Ω	±0.5%	0.25W	±25ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200
RR1220P-121-D	Susumu	120 Ω	±0.5%	0.1W	±25ppm/°C	-55°C ~ 125°C	Active	None

Engineering Selection Recommendations

Direct Equivalent (Same Power Rating): RR1220P-121-D from Susumu provides the closest electrical match with identical 0.1W power rating and 120 Ohm ±0.5% specification. This part maintains ROHS3 compliance and unlimited moisture sensitivity rating. The operating temperature range extends to -55°C ~ 125°C, which covers the primary operating window of the original part. This option is recommended for direct replacement in non-automotive applications where the lower temperature coefficient (±25ppm/°C) provides improved stability.

Power Rating Upgrade (0.125W): RN73R2ATTD1200D100 from KOA Speer represents the manufacturer's active-status successor with increased power handling. This part maintains identical electrical specifications while adding automotive AEC-Q200 certification. The Susumu RG2012 series (RG2012N-121-D-T5, RG2012P-121-D-T5, RG2012V-121-D-T5) offers progressive temperature coefficient improvements (±10ppm/°C to ±25ppm/°C) with anti-sulfur and AEC-Q200 features for automotive-grade applications.

Higher Power Rating (0.25W): Stackpole Electronics RNCF0805D series (RNCF0805DKE120R, RNCF0805DTC120R, RNCF0805DTE120R) provides maximum power headroom with 0.25W rating while maintaining all electrical and mechanical compatibility. These parts carry AEC-Q200 automotive certification and are suitable for applications requiring enhanced thermal margin.

Specialized Applications: CRT0805-DZ-1200ELF from Bourns Inc. is designated for current sense applications with 0.125W power rating and ±50ppm/°C temperature coefficient. This part is appropriate only when current sensing functionality is required.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and operating temperature range compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher power rating than the original 0.1W specification?

A: Yes. Substitute parts rated at 0.125W or 0.25W are electrically compatible and mechanically interchangeable in the 0805 package. Higher power ratings provide additional thermal margin and do not negatively impact circuit performance. The physical dimensions remain identical at 0.079" L x 0.049" W (2.00mm x 1.25mm).

Q: What is the significance of the temperature coefficient difference between substitute parts?

A: Temperature coefficient (ppm/°C) indicates resistance value drift across the operating temperature range. The original RN732ATTD1200D100 has ±100ppm/°C. Substitute parts with lower coefficients (±5ppm/°C to ±50ppm/°C) provide improved stability and accuracy across temperature extremes. Selection depends on circuit tolerance requirements; lower coefficients are beneficial for precision applications.

Q: Are all substitute parts suitable for automotive applications?

A: Substitute parts with AEC-Q200 certification (RN73R2ATTD1200D100, AT0805DRE07120RL, RG2012 series, RNCF0805D series) meet automotive qualification standards. The original RN732ATTD1200D100 and RR1220P-121-D lack this certification and are suitable for industrial and commercial applications only.

Q: What is the difference between anti-sulfur and moisture-resistant features?

A: Moisture-resistant construction protects against humidity ingress. Anti-sulfur treatment provides additional protection against sulfur-containing atmospheric contaminants common in industrial environments. Both features are compatible with the original specification; anti-sulfur represents an enhancement for harsh environment applications.

Q: Can I substitute RR1220P-121-D if my circuit operates above 125°C?

A: No. RR1220P-121-D has maximum operating temperature of 125°C, while the original part and most other substitutes support 155°C. For applications requiring full -55°C ~ 155°C range, select alternatives from the RN73R2ATTD1200D100, AT0805DRE07120RL, RG2012 series, or RNCF0805D series.

Q: Is the 0805 package dimension identical across all substitute parts?

A: Yes. All substitute parts use 0805 (2012 Metric) package with identical footprint dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm). Height variation exists (0.020" to 0.026" seated maximum), but this does not affect PCB layout compatibility or soldering procedures.

Q: Which substitute offers the best long-term availability?

A: RNCF0805DTE120R from Stackpole Electronics shows highest inventory (4279 pcs) with active product status. RR1220P-121-D from Susumu also demonstrates strong availability (40768 pcs). Both parts are recommended for new designs requiring extended production lifecycles.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message