RN732ATTD4123F100 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4123F100 is a 412 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, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. The part features moisture-resistant construction with unlimited moisture sensitivity level (MSL 1) and operates across the temperature range of -55°C to 155°C.

Substiute Parts

RN732ATTD4123F100

KOA Speer Electronics, Inc.In Stock: 1072RN732ATTD4123F100 Datasheet

Current PartRFQ

RN73R2ATTD4123F100

KOA Speer Electronics, Inc.In Stock: 1002RN73R2ATTD4123F100 Datasheet

DirectRFQ

RT0805FRD07412KL

YAGEOIn Stock: 762RT0805FRD07412KL Datasheet

UpgradeRFQ

RT0805FRE07412KL

YAGEOIn Stock: 1006RT0805FRE07412KL Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD4123F100 is determined by strict adherence to the following parameters:

Critical Parameters (Must Match Exactly):

• Resistance value: 412 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Composition: Thin Film
• Operating temperature range: -55°C ~ 155°C
• RoHS3 compliance
• MSL 1 rating

Allowable Variations:

• Power rating: Substitute parts may have equal or higher power ratings (0.125W / 1/8W acceptable as upgrade)
• Temperature coefficient: May vary within thin film specifications (±25ppm/°C to ±100ppm/°C)
• Packaging format: Tape & Reel (TR) acceptable for equivalent functionality
• Automotive qualification: AEC-Q200 certification is an additional feature, not a requirement for substitution

Identified Substitute Categories:

1. Direct Equivalent (Same Manufacturer): RN73R2ATTD4123F100 - KOA Speer Electronics, Inc. RN73R series with upgraded power rating and automotive qualification
2. Upgrade Equivalents (Alternative Manufacturer): RT0805FRD07412KL and RT0805FRE07412KL - YAGEO RT series with enhanced specifications

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD4123F100 (KOA Speer Electronics, Inc.): This part is the preferred direct equivalent from the original manufacturer. It maintains identical resistance, tolerance, package dimensions, and operating temperature range. The upgrade from 0.1W to 0.125W power rating provides enhanced thermal margin without affecting circuit compatibility. Active product status ensures long-term availability. AEC-Q200 automotive qualification is an additional feature suitable for applications requiring automotive-grade components. Temperature coefficient remains at ±100ppm/°C, matching the original specification.

RT0805FRD07412KL (YAGEO): This YAGEO RT series part meets all critical substitution parameters with identical resistance, tolerance, and package specifications. The 0.125W power rating upgrade is functionally compatible. The temperature coefficient of ±25ppm/°C represents an improvement over the original ±100ppm/°C specification, providing superior frequency stability and temperature performance. Active product status and ROHS3 compliance support long-term procurement. This part is suitable for applications where enhanced temperature stability is beneficial.

RT0805FRE07412KL (YAGEO): This alternative YAGEO RT series part provides equivalent functionality with identical critical parameters. The temperature coefficient of ±50ppm/°C offers a middle ground between the original specification and the RT0805FRD07412KL variant. Active product status and full compliance certifications ensure availability and regulatory adherence. Selection between RT0805FRD07412KL and RT0805FRE07412KL depends on specific temperature stability requirements within the application circuit.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4123F100 directly replace RN732ATTD4123F100 in existing designs?

A: Yes. Both parts share identical resistance (412 kOhms), tolerance (±1%), package (0805), physical dimensions, and operating temperature range (-55°C ~ 155°C). The power rating increase from 0.1W to 0.125W is a non-breaking change that improves thermal performance. No circuit redesign is required.

Q: What is the difference between RT0805FRD07412KL and RT0805FRE07412KL?

A: Both YAGEO parts are functionally equivalent with identical resistance, tolerance, and package specifications. The primary difference is the temperature coefficient: RT0805FRD07412KL specifies ±25ppm/°C while RT0805FRE07412KL specifies ±50ppm/°C. Selection depends on circuit requirements for temperature stability. Applications requiring tighter frequency tolerance or lower drift should use RT0805FRD07412KL.

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

A: Yes. RN73R2ATTD4123F100, RT0805FRD07412KL, and RT0805FRE07412KL are all supplied in Tape & Reel format, suitable for automated assembly processes. Packaging format does not affect electrical or mechanical compatibility.

Q: Do the substitute parts maintain RoHS3 and REACH compliance?

A: Yes. All identified substitute parts (RN73R2ATTD4123F100, RT0805FRD07412KL, RT0805FRE07412KL) are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status.

Q: Is AEC-Q200 automotive qualification required for substitution?

A: No. AEC-Q200 qualification is an additional feature provided by RN73R2ATTD4123F100 but is not a requirement for functional substitution. Applications not requiring automotive-grade components can use any of the three substitute parts. Applications requiring automotive qualification should specify RN73R2ATTD4123F100.

Q: Can these parts be used interchangeably in high-frequency applications?

A: The temperature coefficient differences between parts affect frequency stability. RT0805FRD07412KL (±25ppm/°C) provides superior stability compared to the original RN732ATTD4123F100 (±100ppm/°C) and RN73R2ATTD4123F100 (±100ppm/°C). For applications sensitive to frequency drift across temperature ranges, RT0805FRD07412KL is the preferred selection.

Q: What is the MSL rating and why does it matter?

A: All parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations. Components can be stored indefinitely without desiccant packaging and do not require special handling or baking procedures prior to assembly. This specification is identical across all substitute parts.