AF1210FR-07124RL Equivalent & Substitute Parts

Part Overview

The AF1210FR-07124RL is a 124 Ohms ±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 and features anti-sulfur construction. The part is currently in active production status with 1042 units in stock.

Substitute parts are necessary when the primary manufacturer experiences supply constraints, when design requirements mandate alternative qualified sources, or when inventory availability necessitates cross-compatible alternatives that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	124 Ohms
Tolerance	±1%
Power Rating	0.5W (1/2W)
Package	1210 (3225 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Automotive Rating	AEC-Q200
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Resistance value: 124 Ohms
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
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1

All substitute parts listed meet these criteria without exception. Physical dimensions may vary within acceptable tolerances for the 1210 package class, and product status may differ between manufacturers.

Parameter Comparison

Parameter	AF1210FR-07124RL (YAGEO)	ERJ-14NF1240U (Panasonic)	RMCF1210FT124R (Stackpole)
Resistance	124 Ohms	124 Ohms	124 Ohms
Tolerance	±1%	±1%	±1%
Power Rating	0.5W	0.5W	0.5W
Package	1210 (3225 Metric)	1210 (3225 Metric)	1210 (3225 Metric)
Composition	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C
AEC-Q200 Rating	Yes	Yes	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Not For New Designs	Active
Length	0.122" (3.10mm)	0.126" (3.20mm)	0.126" (3.20mm)
Width	0.102" (2.60mm)	0.098" (2.50mm)	0.098" (2.50mm)
Height (Max)	0.024" (0.60mm)	0.028" (0.70mm)	0.028" (0.70mm)

Engineering Selection Recommendations

AF1210FR-07124RL (YAGEO) — Primary selection for new designs. Active product status with anti-sulfur construction. Smallest physical profile within 1210 package class.

RMCF1210FT124R (Stackpole Electronics Inc) — Qualified alternative with active product status. Identical electrical specifications and AEC-Q200 automotive qualification. Suitable for production and new design applications.

ERJ-14NF1240U (Panasonic Electronic Components) — Functionally equivalent but designated "Not For New Designs." Available for legacy system support and field replacement where existing designs already specify this part number. Electrical and compliance characteristics are identical to primary and secondary alternatives.

Selection between active-status parts (YAGEO and Stackpole) is determined by supply availability and procurement lead times. The Panasonic part should be reserved for applications where design continuity with existing systems is required.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF1240U be used in new designs? A: No. Panasonic designates this part as "Not For New Designs." Use AF1210FR-07124RL or RMCF1210FT124R for new applications.

Q: Are there dimensional differences between substitute parts? A: Yes. The YAGEO part measures 0.122" × 0.102" × 0.024" (max height), while both Panasonic and Stackpole parts measure 0.126" × 0.098" × 0.028" (max height). All dimensions remain within 1210 package class tolerances and are compatible with standard 1210 PCB footprints.

Q: Do all substitute parts meet AEC-Q200 automotive qualification? A: Yes. All three parts carry AEC-Q200 rating and are suitable for automotive applications within the specified operating temperature range of -55°C to 155°C.

Q: What is the difference between YAGEO's anti-sulfur feature and other parts? A: The AF1210FR-07124RL includes anti-sulfur construction as a specified feature. The Panasonic and Stackpole parts do not list this feature in their provided specifications. If anti-sulfur construction is a design requirement, AF1210FR-07124RL is the appropriate selection.

Q: Are all parts RoHS3 compliant? A: Yes. All three parts are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can these parts be used interchangeably on the same PCB? A: Electrically, yes. All parts are 124 Ohms ±1% with identical power ratings and temperature coefficients. Mechanically, dimensional variations require verification against specific PCB footprint design tolerances, though all conform to standard 1210 package specifications.

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