RK73H2HTTE1273F Equivalent & Substitute Parts

Part Overview

The RK73H2HTTE1273F is a 127 kOhms ±1% 0.75W chip resistor manufactured by KOA Speer Electronics in the 2010 (5025 Metric) package. This thick film resistor meets automotive AEC-Q200 qualification and includes moisture-resistant construction for enhanced reliability in demanding environments. The part is currently in active production status with 1069 units available in inventory.

Substitute parts become necessary when the primary manufacturer experiences supply constraints, when design requirements mandate alternative qualified sources, or when inventory availability necessitates sourcing from secondary suppliers while maintaining identical electrical and mechanical performance.

Substiute Parts

RK73H2HTTE1273F

KOA Speer Electronics, Inc.In Stock: 1173RK73H2HTTE1273F Datasheet

Current PartRFQ

ERJ-12SF1273U

Panasonic Electronic ComponentsIn Stock: 2699ERJ-12SF1273U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H2HTTE1273F is determined by strict equivalence across the following parameters:

• Resistance value: 127 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.75W (exact match required)
• Package: 2010 (5025 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

The ERJ-12SF1273U from Panasonic Electronic Components meets all substitution criteria and is classified as a parametric equivalent. This part maintains identical electrical specifications, mechanical dimensions, and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-12SF1273U qualifies as a direct substitute for the RK73H2HTTE1273F based on complete parametric equivalence. Both parts satisfy AEC-Q200 automotive qualification requirements and maintain ROHS3 compliance. The primary distinction is product status: the RK73H2HTTE1273F remains in active production, while the ERJ-12SF1273U is designated as Not For New Designs. This status difference does not affect electrical or mechanical compatibility for existing applications or current inventory requirements.

Selection between these parts should be based on supply availability, lead time requirements, and existing qualification documentation within your organization. Both parts are suitable for direct substitution in automotive and industrial applications requiring 127 kOhms ±1% 0.75W thick film resistors in the 2010 package.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-12SF1273U replace the RK73H2HTTE1273F in existing designs?

A: Yes. The ERJ-12SF1273U is a parametric equivalent with identical resistance, tolerance, power rating, package dimensions, temperature coefficient, operating temperature range, and automotive AEC-Q200 qualification. Direct substitution is electrically and mechanically compatible.

Q: What does "Not For New Designs" mean for the ERJ-12SF1273U?

A: This status indicates that Panasonic is not recommending this part for new design implementations. However, it remains suitable for replacement, repair, and maintenance applications where the part is already in use. Existing designs using this part may continue to source it for production.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts measure 0.197" L x 0.098" W (5.00mm x 2.50mm) with a maximum seated height of 0.028" (0.70mm). They are mechanically interchangeable in the 2010 (5025 Metric) package footprint.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the RK73H2HTTE1273F and ERJ-12SF1273U carry AEC-Q200 automotive qualification and are ROHS3 compliant with MSL 1 moisture sensitivity rating.

Q: What is the temperature coefficient significance for substitution?

A: Both parts share an identical temperature coefficient of ±100ppm/°C and operate across the same temperature range of -55°C ~ 155°C. This ensures equivalent performance stability across thermal cycling and environmental extremes.