Equivalent & Substitute Parts for RN732BTTD1111F25

Part Overview

The RN732BTTD1111F25 is a 1.11 kOhms ±1% 0.125W (1/8W) Chip Resistor in 1206 (3216 Metric) package manufactured by KOA Speer Electronics, Inc. This thin film, moisture-resistant component operates across -55°C to 155°C with a temperature coefficient of ±25ppm/°C. The product is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement continuity.

Key Parameters

Parameter	Value
Resistance	1.11 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	1206 (3216 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RN732BTTD1111F25 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Resistance value: 1.11 kOhms (exact match required)
Tolerance: ±1% or better (tighter tolerance acceptable)
Package / Case: 1206 (3216 Metric) (physical compatibility)
Composition: Thin Film (electrical performance characteristics)
Temperature Coefficient: ±25ppm/°C (stability requirement)
Moisture Sensitivity Level: 1 (Unlimited) (handling and storage compatibility)

Power Rating Consideration: The original part is rated at 0.125W (1/8W). Substitute parts with equal or higher power ratings are electrically compatible, as they maintain the same resistance and tolerance specifications while providing equal or greater thermal capacity.

Tolerance Enhancement: Substitute parts with ±0.1% tolerance are compatible with applications requiring the original ±1% specification, as tighter tolerance represents an upgrade in precision.

Substitute parts are grouped into two categories:

Direct Substitute (Same Series, Higher Power Rating):

RN73R2BTTD1111F25: Same manufacturer (KOA Speer), same series evolution, 0.25W rating, Active status

Upgrade Substitutes (Enhanced Specifications):

MCA12060D1111BP500: Precision series, ±0.1% tolerance, 0.25W rating
PTN1206E1111BST1: ±0.1% tolerance, 0.4W rating, non-inductive feature
RNCF1206BTE1K11: ±0.1% tolerance, 0.333W rating, AEC-Q200 automotive qualification
TNPW12061K11BEEA: ±0.1% tolerance, 0.52W rating, AEC-Q200 automotive qualification, extended temperature to 175°C
TNPW12061K11BETY: ±0.1% tolerance, 0.25W rating, military specification

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Product Status	RoHS Status
RN732BTTD1111F25	KOA Speer Electronics	1.11k	±1%	0.125	±25	-55 ~ 155	1206	Obsolete	ROHS3 Compliant
RN73R2BTTD1111F25	KOA Speer Electronics	1.11k	±1%	0.25	±25	-55 ~ 155	1206	Active	ROHS3 Compliant
MCA12060D1111BP500	Vishay Beyschlag	1.11k	±0.1%	0.25	±25	-55 ~ 125	1206	Active	ROHS3 Compliant
PTN1206E1111BST1	Vishay Dale Thin Film	1.11k	±0.1%	0.4	±25	-55 ~ 155	1206	Active	ROHS3 Compliant
RNCF1206BTE1K11	Stackpole Electronics	1.11k	±0.1%	0.333	±25	-55 ~ 155	1206	Active	ROHS3 Compliant
TNPW12061K11BEEA	Vishay Dale	1.11k	±0.1%	0.52	±25	-55 ~ 175	1206	Active	ROHS3 Compliant
TNPW12061K11BETY	Vishay Dale	1.11k	±0.1%	0.25	±25	-55 ~ 125	1206	Active	RoHS non-compliant

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance): Select RN73R2BTTD1111F25 when the original ±1% tolerance specification is required and the application can accommodate the increased 0.25W power rating. This part maintains KOA Speer manufacturing continuity and Active product status, ensuring long-term availability and supply chain stability.

For Precision Applications (Enhanced Tolerance): Select MCA12060D1111BP500, PTN1206E1111BST1, RNCF1206BTE1K11, or TNPW12061K11BEEA when circuit design permits ±0.1% tolerance. These parts provide tighter tolerance specifications suitable for precision analog circuits, reference networks, and measurement applications. All are ROHS3 Compliant with Active product status.

For Automotive Applications: Select RNCF1206BTE1K11 or TNPW12061K11BEEA when AEC-Q200 automotive qualification is required. Both parts meet automotive reliability standards and maintain the required electrical specifications across the operating temperature range.

For Extended Temperature Range: Select TNPW12061K11BEEA when operating temperatures extend to 175°C. This part provides the highest temperature capability among available substitutes while maintaining ±0.1% tolerance and 0.52W power rating.

For Military Applications: Select TNPW12061K11BETY when military specification compliance is required. Note that this part carries RoHS non-compliant status and REACH Affected designation, requiring verification against specific procurement requirements.

Avoid: TNPW12061K11BETY for new designs requiring ROHS3 compliance or REACH compliance unless military specification requirements explicitly override these environmental standards.

Frequently Asked Questions (FAQ)

Q: Can RN732BTTD1111F25 be replaced with a higher power rating resistor?

A: Yes. Substitute parts with equal or higher power ratings (0.25W, 0.333W, 0.4W, or 0.52W) are electrically compatible. Higher power ratings do not affect circuit performance when resistance and tolerance specifications remain constant. Physical dimensions remain identical within the 1206 package family.

Q: What is the difference between ±1% and ±0.1% tolerance?

A: Tolerance defines the maximum deviation from the nominal resistance value. The original RN732BTTD1111F25 allows ±1% deviation (±11.1 Ohms from 1.11 kOhms). Substitute parts with ±0.1% tolerance allow only ±1.11 Ohms deviation, providing tighter precision. This upgrade is compatible with all applications requiring the original ±1% specification.

Q: Are all substitute parts in the same 1206 package?

A: Yes. All substitute parts use the 1206 (3216 Metric) package. Physical dimensions are standardized: 0.126" L x 0.063" W (3.20mm x 1.60mm). Height variations (0.026" to 0.033") remain within standard PCB assembly tolerances and do not affect placement or soldering.

Q: Which substitute part has the longest operating temperature range?

A: TNPW12061K11BEEA operates from -55°C to 175°C, extending 20°C above the original specification. All other substitutes maintain the original -55°C to 155°C range or reduce the upper limit to 125°C.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard for passive component reliability. RNCF1206BTE1K11 and TNPW12061K11BEEA carry this qualification, indicating suitability for automotive applications requiring enhanced reliability testing and traceability.

Q: Can TNPW12061K11BETY be used in new commercial designs?

A: TNPW12061K11BETY carries RoHS non-compliant and REACH Affected designations. Use is restricted to military applications or legacy systems where these environmental standards do not apply. Verify compliance requirements before selection for new commercial designs.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed parts carry MSL 1, ensuring identical moisture handling and storage procedures.

Q: Are all substitute parts ROHS3 compliant?

A: Five of six substitute parts are ROHS3 Compliant. TNPW12061K11BETY is RoHS non-compliant. Verify compliance requirements for your specific application before final selection.

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