AF1210FR-07124KL Equivalent & Substitute Parts

Part Overview

The AF1210FR-07124KL is a 124 kOhms ±1% 0.5W thick film chip resistor in 1210 (3225 Metric) package manufactured by YAGEO. This component features anti-sulfur coating and automotive AEC-Q200 qualification, making it suitable for automotive and harsh environment applications. The part is currently in active production status with 913 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility across qualified manufacturers is needed while maintaining electrical and mechanical compatibility.

Substiute Parts

AF1210FR-07124KL

YAGEOIn Stock: 971AF1210FR-07124KL Datasheet

Current PartRFQ

AC1210FR-07124KL

YAGEOIn Stock: 4347AC1210FR-07124KL Datasheet

MFR RecommendedRFQ

ERJ-14NF1243U

Panasonic Electronic ComponentsIn Stock: 6544ERJ-14NF1243U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AF1210FR-07124KL is determined by strict equivalence across the following parameters:

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

All identified substitute parts meet these criteria. Physical dimensions may vary within acceptable tolerances for the 1210 package family. Moisture sensitivity level remains MSL 1 across all substitutes.

Parameter Comparison

Engineering Selection Recommendations

AC1210FR-07124KL (YAGEO) is the primary recommended substitute. Both the AF1210FR-07124KL and AC1210FR-07124KL are YAGEO products in active production status with identical electrical specifications. The AC series variant features moisture-resistant thick film composition compared to the anti-sulfur coating of the AF series. Both maintain full AEC-Q200 automotive qualification and ROHS3 compliance. Inventory availability for AC1210FR-07124KL is significantly higher at 4259 units.

ERJ-14NF1243U (Panasonic Electronic Components) meets all electrical and mechanical equivalence criteria and maintains AEC-Q200 qualification. However, this part carries a "Not For New Designs" product status designation. Use of this part is appropriate only for legacy system maintenance, repair, or continuation of existing production runs where design freeze conditions apply. The ERJ-14N series is suitable for field replacement or sustaining engineering applications.

Frequently Asked Questions (FAQ)

Q: Can AC1210FR-07124KL be used as a direct replacement for AF1210FR-07124KL in automotive applications?

A: Yes. Both parts are YAGEO products with identical resistance (124 kOhms), tolerance (±1%), power rating (0.5W), package (1210), and AEC-Q200 automotive qualification. The primary difference is coating technology: AF series uses anti-sulfur coating while AC series uses moisture-resistant coating. Both are ROHS3 compliant and suitable for -55°C to 155°C operating range.

Q: Why is ERJ-14NF1243U marked "Not For New Designs"?

A: The "Not For New Designs" status indicates that Panasonic has transitioned this product line and recommends alternative parts for new development. This designation does not affect electrical performance or compliance certifications. The part remains suitable for repair, maintenance, and continuation of existing designs.

Q: Are there physical dimension differences between these substitutes?

A: Minor variations exist within the 1210 package specification. AF1210FR-07124KL and AC1210FR-07124KL are both 0.122" L x 0.102" W (3.10mm x 2.60mm) with 0.024" maximum seated height. ERJ-14NF1243U is 0.126" L x 0.098" W (3.20mm x 2.50mm) with 0.028" maximum seated height. These variations remain within standard 1210 package tolerances and do not affect PCB footprint compatibility.

Q: Do all substitutes maintain the same moisture sensitivity level?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or reflow processing.

Q: Which substitute should be selected for new automotive designs?

A: AC1210FR-07124KL is the recommended choice for new designs. It maintains active production status, higher inventory availability, and identical electrical specifications to the AF1210FR-07124KL while offering moisture-resistant thick film composition.