AC1206FR-07124KL Equivalent & Substitute Parts

Part Overview

The AC1206FR-07124KL is a 124 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by YAGEO. This part is rated for automotive applications under AEC-Q200 and features moisture-resistant construction suitable for operating temperatures from -55°C to 155°C. The part is currently active in production with 1092 units in stock.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements allow for equivalent alternatives from different manufacturers that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	124 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AC1206FR-07124KL is determined by strict equivalence across the following parameters:

Resistance value: 124 kOhms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package designation: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Termination count: 2
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

All listed substitute parts meet these core electrical and mechanical requirements. Dimensional variations within supplier tolerances do not affect functional equivalence. Automotive AEC-Q200 rating is present on the main part and three substitute options; parts without this rating remain electrically equivalent but lack automotive qualification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	AEC-Q200	Product Status	Inventory (Pcs)
AC1206FR-07124KL	YAGEO	124 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C to 155°C	Yes	Active	1092
RC1206FR-07124KL	YAGEO	124 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C to 155°C	No	Active	20114
RK73H2BTTD1243F	KOA Speer Electronics, Inc.	124 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C to 155°C	Yes	Active	10101
CR1206-FX-1243ELF	Bourns Inc.	124 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C to 155°C	No	Active	26063
CRCW1206124KFKEA	Vishay Dale	124 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C to 155°C	Yes	Active	6030
ERJ-8ENF1243V	Panasonic Electronic Components	124 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C to 155°C	Yes	Not For New Designs	10634

Engineering Selection Recommendations

All substitute parts listed maintain active production status except ERJ-8ENF1243V, which carries a "Not For New Designs" designation. For new designs, selection should prioritize parts with active status: RC1206FR-07124KL, RK73H2BTTD1243F, CR1206-FX-1243ELF, or CRCW1206124KFKEA.

For applications requiring automotive AEC-Q200 qualification, the following parts are suitable: RK73H2BTTD1243F (KOA Speer), CRCW1206124KFKEA (Vishay Dale), and ERJ-8ENF1243V (Panasonic). The main part AC1206FR-07124KL also carries AEC-Q200 rating.

RC1206FR-07124KL and CR1206-FX-1243ELF lack AEC-Q200 certification but remain electrically and mechanically equivalent for non-automotive applications. All parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can I substitute RC1206FR-07124KL for AC1206FR-07124KL in automotive applications?

A: RC1206FR-07124KL is electrically and mechanically equivalent but does not carry AEC-Q200 automotive qualification. Use only in non-automotive circuits or where automotive certification is not required.

Q: What is the difference between the main part and substitute parts in terms of physical dimensions?

A: All parts use the 1206 (3216 Metric) package. Minor dimensional variations exist within supplier tolerances: seated heights range from 0.024" to 0.030" (0.60mm to 0.75mm), and length dimensions vary between 0.122" and 0.126" (3.10mm to 3.20mm). These variations do not affect PCB layout or functional performance.

Q: Is ERJ-8ENF1243V suitable for new product designs?

A: ERJ-8ENF1243V carries a "Not For New Designs" status. While electrically equivalent and currently in stock, it should not be selected for new designs. Use active alternatives such as RK73H2BTTD1243F, CR1206-FX-1243ELF, or CRCW1206124KFKEA instead.

Q: Do all substitute parts meet the same temperature and tolerance specifications?

A: Yes. All listed parts maintain 124 kOhms ±1% resistance, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Electrical performance is identical across all substitutes.

Q: Which substitute part has the highest inventory availability?

A: CR1206-FX-1243ELF (Bourns) has the highest inventory with 26,063 units in stock, followed by RC1206FR-07124KL (YAGEO) with 20,114 units.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message