AC2512FK-07124RL Equivalent & Substitute Parts

Part Overview

The AC2512FK-07124RL is a 124 Ohm ±1% 1W thick film chip resistor in 2512 (6432 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 active in production with 1109 pieces available in stock.

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

Substiute Parts

AC2512FK-07124RL

YAGEOIn Stock: 1215AC2512FK-07124RL Datasheet

Current PartRFQ

CRCW2512124RFKEG

Vishay DaleIn Stock: 4884CRCW2512124RFKEG Datasheet

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ERJ-1TNF1240U

Panasonic Electronic ComponentsIn Stock: 10469ERJ-1TNF1240U Datasheet

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RMCF2512FT124R

Stackpole Electronics IncIn Stock: 4934RMCF2512FT124R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AC2512FK-07124RL is determined by strict equivalence across the following parameters:

• Resistance value: 124 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Package: 2512 (6432 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant

All substitute parts listed meet these criteria. Physical dimensions may vary within acceptable tolerances for the 2512 package standard. Product status differences are noted for design planning purposes.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are electrically and mechanically equivalent to the AC2512FK-07124RL and meet identical compliance requirements for automotive applications.

CRCW2512124RFKEG (Vishay Dale) and RMCF2512FT124R (Stackpole Electronics Inc) are both designated as Active products and are suitable for new designs. Both manufacturers maintain substantial inventory levels.

ERJ-1TNF1240U (Panasonic Electronic Components) carries a "Not For New Designs" status. While this part meets all electrical and mechanical specifications and maintains full AEC-Q200 and RoHS3 compliance, it is appropriate only for legacy design support or existing production continuity where the part is already qualified in the design.

Selection should prioritize Active status parts for new design implementations. Inventory availability and lead time considerations may influence final selection among the Active alternatives.

Frequently Asked Questions (FAQ)

Q: Can CRCW2512124RFKEG be used as a direct replacement for AC2512FK-07124RL?

A: Yes. Both parts share identical electrical specifications (124 Ohms ±1%, 1W), operate across the same temperature range (-55°C ~ 155°C), carry AEC-Q200 automotive qualification, and are packaged in 2512 (6432 Metric). Physical dimensions are within acceptable tolerances for the package standard.

Q: Why is ERJ-1TNF1240U marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development for this part number. The part remains fully compliant with all specifications and certifications but should not be selected for new design implementations. It is retained for legacy support only.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 2512 package standard. Length ranges from 0.248" to 0.252" (6.30mm to 6.40mm), width from 0.122" to 0.126" (3.10mm to 3.20mm), and height from 0.026" to 0.028" (0.65mm to 0.70mm). These variations are within acceptable PCB layout tolerances for the 2512 package.

Q: Do all substitute parts maintain the same moisture sensitivity level?

A: Yes. All parts, including the primary AC2512FK-07124RL, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Which substitute part offers the best inventory availability?

A: ERJ-1TNF1240U currently has the highest inventory level at 10424 pieces. However, given its "Not For New Designs" status, CRCW2512124RFKEG (4837 pieces) or RMCF2512FT124R (4900 pieces) are preferred for new implementations, both maintaining substantial stock levels.