RG1005N-1272-B-T1 Equivalent & Substitute Parts

Part Overview

The RG1005N-1272-B-T1 is a 12.7 kOhms ±0.1% thin film chip resistor in 0402 (1005 Metric) package rated for 0.063W (1/16W) power dissipation. This component features anti-sulfur coating and automotive AEC-Q200 qualification, designed for high-precision applications requiring tight tolerance and temperature stability across -55°C to 155°C operating range.

The RG1005N-1272-B-T1 is classified as obsolete. Equivalent and substitute parts are available from both the original manufacturer Susumu and alternative suppliers to ensure design continuity and procurement flexibility.

Substiute Parts

RG1005N-1272-B-T1

SusumuIn Stock: 975RG1005N-1272-B-T1 Datasheet

Current PartRFQ

RG1005N-1272-B-T5

SusumuIn Stock: 1103RG1005N-1272-B-T5 Datasheet

DirectRFQ

RG1005N-1272-W-T1

SusumuIn Stock: 1202RG1005N-1272-W-T1 Datasheet

UpgradeRFQ

RN73C1E12K7BTDF

TE Connectivity Passive ProductIn Stock: 1172RN73C1E12K7BTDF Datasheet

DirectRFQ

RQ73C1E12K7BTD

TE Connectivity Passive ProductIn Stock: 3106RQ73C1E12K7BTD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RG1005N-1272-B-T1 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 12.7 kOhms
• Package / Case: 0402 (1005 Metric)
• Power rating: 0.063W (1/16W)
• Composition: Thin Film
• Temperature coefficient: ±10ppm/°C
• Operating temperature range: -55°C ~ 155°C
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Tolerance Consideration: Tolerance specifications may vary between direct substitutes (±0.1%) and upgrade options (±0.05%). Tighter tolerance variants are functionally compatible and represent performance enhancements.

Automotive Qualification: AEC-Q200 rating is present in the original part and maintained in most substitute options, ensuring suitability for automotive applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

RG1005N-1272-B-T5 and RQ73C1E12K7BTD are direct functional equivalents to the RG1005N-1272-B-T1. Both maintain identical electrical specifications, package dimensions, and automotive AEC-Q200 qualification. These parts are classified as active products with current manufacturing status, ensuring long-term availability and supply chain stability.

Upgrade Option (Enhanced Performance):

RG1005N-1272-W-T1 represents a tolerance upgrade from ±0.1% to ±0.05%, providing tighter resistance accuracy while maintaining all other electrical and mechanical parameters. This part is suitable for applications requiring enhanced precision without design modification.

Cross-Manufacturer Alternative:

RN73C1E12K7BTDF from TE Connectivity Passive Product meets all core electrical specifications and maintains ROHS3 compliance. This part differs in seated height (0.014" versus 0.016") and does not carry explicit AEC-Q200 automotive qualification in the provided specifications. Selection of this part requires confirmation of compatibility with automotive application requirements.

Packaging Consideration:

The original RG1005N-1272-B-T1 is supplied in bulk packaging. Substitute parts RG1005N-1272-B-T5, RG1005N-1272-W-T1, RQ73C1E12K7BTD, and RN73C1E12K7BTDF are supplied in Tape & Reel (TR) format, which is standard for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RG1005N-1272-B-T5 be used as a direct replacement for RG1005N-1272-B-T1?

A: Yes. RG1005N-1272-B-T5 is a direct functional equivalent with identical resistance (12.7 kOhms), tolerance (±0.1%), power rating (0.063W), package (0402), and automotive AEC-Q200 qualification. The primary difference is product status (active versus obsolete) and packaging format (Tape & Reel versus bulk).

Q: What is the difference between RG1005N-1272-B-T1 and RG1005N-1272-W-T1?

A: RG1005N-1272-W-T1 offers tighter tolerance specification (±0.05% versus ±0.1%). All other electrical parameters, package dimensions, and operating characteristics remain identical. This represents a performance upgrade suitable for precision-critical applications.

Q: Is RN73C1E12K7BTDF suitable for automotive applications?

A: RN73C1E12K7BTDF meets the core electrical specifications and ROHS3 compliance of the original part. However, explicit AEC-Q200 automotive qualification is not documented in the provided specifications. Confirmation of automotive suitability with the supplier or design requirements is necessary before selection.

Q: What is the significance of the seated height difference in RN73C1E12K7BTDF?

A: RN73C1E12K7BTDF has a maximum seated height of 0.014" (0.35mm) compared to 0.016" (0.40mm) for other substitutes. This 0.002" difference is within typical PCB assembly tolerances but should be confirmed against specific board design clearance requirements.

Q: Why is the original RG1005N-1272-B-T1 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. Active equivalent parts (RG1005N-1272-B-T5, RG1005N-1272-W-T1, RQ73C1E12K7BTD, RN73C1E12K7BTDF) are available for new designs and ongoing production requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with environmental and regulatory requirements.

Q: What packaging format should be selected for automated assembly?

A: All active substitute parts are supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly processes. The original RG1005N-1272-B-T1 bulk packaging is not available in active substitutes.