RN732BTTD1582D50 Equivalent & Substitute Parts

Part Overview

The RN732BTTD1582D50 is a 15.8 kOhms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 1206 (3216 Metric) package format with 0.125W (1/8W) power rating. This component features moisture-resistant construction and operates across the temperature range of -55°C to 155°C.

The RN732BTTD1582D50 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistor specification.

Substiute Parts

RN732BTTD1582D50

KOA Speer Electronics, Inc.In Stock: 980RN732BTTD1582D50 Datasheet

Current PartRFQ

RN73R2BTTD1582D50

KOA Speer Electronics, Inc.In Stock: 775RN73R2BTTD1582D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732BTTD1582D50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 15.8 kOhms
• Tolerance: ±0.5%
• Package / Case: 1206 (3216 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant feature

Allowable Variation:

• Power rating may be equal to or greater than the original specification (0.125W minimum)
• Product status may transition from obsolete to active
• Additional certifications (such as AEC-Q200) do not preclude substitution

The substitute part RN73R2BTTD1582D50 satisfies all mandatory matching parameters while providing an increased power rating of 0.25W (1/4W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2BTTD1582D50 is a direct functional substitute for the obsolete RN732BTTD1582D50. Both components share identical electrical specifications (15.8 kOhms, ±0.5% tolerance, ±50ppm/°C temperature coefficient) and mechanical form factor (1206 package).

The substitute part provides the following advantages:

• Active Product Status: The RN73R2BTTD1582D50 maintains active manufacturing status, ensuring long-term supply chain availability and support.
• Increased Power Margin: The 0.25W (1/4W) power rating provides additional thermal headroom compared to the original 0.125W specification, supporting applications with higher dissipation requirements.
• Automotive Qualification: AEC-Q200 certification qualifies this component for automotive applications requiring enhanced reliability standards.
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status.

The identical package dimensions, height profile, and moisture sensitivity level ensure direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2BTTD1582D50 be used as a direct replacement for the RN732BTTD1582D50 in existing designs?

A: Yes. Both components share identical resistance value (15.8 kOhms), tolerance (±0.5%), temperature coefficient (±50ppm/°C), package format (1206), and physical dimensions. The substitute part is electrically and mechanically compatible with the original specification.

Q: What is the significance of the increased power rating in the substitute part?

A: The RN73R2BTTD1582D50 provides 0.25W (1/4W) power rating compared to the original 0.125W (1/8W). This increased rating provides additional thermal capacity and allows operation in applications with higher power dissipation without exceeding component limits. The higher rating does not negatively impact applications designed for the lower power specification.

Q: Does the AEC-Q200 automotive qualification of the substitute part affect its use in non-automotive applications?

A: No. AEC-Q200 certification represents an additional qualification standard and does not restrict use in non-automotive applications. The component remains fully compatible with all applications originally specified for the RN732BTTD1582D50.

Q: Are there any PCB layout or assembly considerations when substituting the RN73R2BTTD1582D50?

A: No layout modifications are required. Both components utilize identical 1206 (3216 Metric) package dimensions and height specifications. Standard pick-and-place and reflow processes remain unchanged.

Q: What is the moisture sensitivity level for both components?

A: Both the RN732BTTD1582D50 and RN73R2BTTD1582D50 are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard storage and handling procedures apply without special moisture control requirements.

Q: Are both components RoHS compliant?

A: Yes. Both the RN732BTTD1582D50 and RN73R2BTTD1582D50 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.