AC1210FR-07124KL Equivalent & Substitute Parts

Part Overview

The AC1210FR-07124KL is a 124 kOhms ±1% 0.5W thick film chip resistor in 1210 (3225 Metric) package manufactured by YAGEO. This component is rated for automotive applications under AEC-Q200 standard with moisture-resistant construction and operates across -55°C to 155°C. The part is currently in active production status with 4259 units in stock. Substitute parts are necessary when primary inventory is unavailable, when design requirements mandate alternative manufacturers, or when supply chain optimization requires qualified alternatives meeting identical electrical and mechanical specifications.

Substiute Parts

AC1210FR-07124KL

YAGEOIn Stock: 4347AC1210FR-07124KL Datasheet

Current PartRFQ

ERJ-14NF1243U

Panasonic Electronic ComponentsIn Stock: 6544ERJ-14NF1243U Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AC1210FR-07124KL is determined by strict equivalence across the following parameters:

• Resistance value: 124 kOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Package designation: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Automotive qualification: AEC-Q200
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant

The ERJ-14NF1243U from Panasonic Electronic Components meets all electrical and mechanical requirements for direct substitution. Physical dimensions vary slightly within acceptable tolerances for the 1210 package class. Both parts share identical electrical performance characteristics and automotive-grade certifications.

Parameter Comparison

Engineering Selection Recommendations

The AC1210FR-07124KL maintains active production status and is the preferred selection for new designs. The ERJ-14NF1243U is electrically and mechanically equivalent but carries a "Not For New Designs" status, indicating Panasonic has transitioned this part to end-of-life phase. Both parts satisfy identical electrical specifications, automotive AEC-Q200 certification, and environmental compliance requirements. Selection between these parts should be based on supply availability, lead time requirements, and design phase status. For ongoing production and new design initiatives, AC1210FR-07124KL is the recommended primary choice. ERJ-14NF1243U remains suitable for legacy system maintenance and field replacement where existing inventory exists.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF1243U be used as a direct replacement for AC1210FR-07124KL?

A: Yes. Both parts are electrically identical with 124 kOhms ±1% resistance, 0.5W power rating, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both carry AEC-Q200 automotive qualification and ROHS3 compliance. Physical dimensions fall within acceptable 1210 package tolerances.

Q: What is the significance of the "Not For New Designs" status on ERJ-14NF1243U?

A: This designation indicates Panasonic has discontinued active development and new production of this part number. Existing inventory may be available, but long-term supply cannot be guaranteed. New designs should specify AC1210FR-07124KL to ensure sustained component availability.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within 1210 package specifications. AC1210FR-07124KL measures 0.122" L × 0.102" W × 0.024" H (max). ERJ-14NF1243U measures 0.126" L × 0.098" W × 0.028" H (max). These differences remain within standard 1210 package tolerances and do not affect PCB layout or thermal performance.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both AC1210FR-07124KL and ERJ-14NF1243U are AEC-Q200 rated for automotive applications, carry ROHS3 compliance, and feature MSL 1 (Unlimited) moisture sensitivity rating.

Q: What packaging format is available for these parts?

A: Both parts are supplied in Tape & Reel (TR) format suitable for automated assembly processes.