RMCF1206FG18K2 Equivalent & Substitute Parts

Part Overview

The RMCF1206FG18K2 is an 18.2 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This automotive-grade thick film resistor meets AEC-Q200 qualification and operates across -55°C to 155°C. Substitute parts are necessary to address inventory availability, lead time constraints, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	18.2 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Resistance value: 18.2 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.25W / 1/4W (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)
Moisture sensitivity: MSL 1 (exact match required)

All substitute parts listed below meet these criteria. Variations in physical dimensions (length, width, height) and manufacturer-specific features (automotive AEC-Q200 certification, moisture resistance) do not disqualify substitution but may influence selection based on application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Product Status	Inventory (Pcs)
RMCF1206FG18K2	Stackpole Electronics Inc	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	1,035
RMCF1206FT18K2	Stackpole Electronics Inc	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	149,506
CR1206-FX-1822ELF	Bourns Inc.	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	24,572
CRCW120618K2FKEA	Vishay Dale	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	21,472
ERJ-8ENF1822V	Panasonic Electronic Components	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Not For New Designs	42,823
KTR18EZPF1822	Rohm Semiconductor	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	10,397
RC1206FR-0718K2L	YAGEO	18.2 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	82,157

Engineering Selection Recommendations

Selection among substitute parts should be based on the following criteria:

Active Product Status Priority: RMCF1206FT18K2, CR1206-FX-1822ELF, CRCW120618K2FKEA, KTR18EZPF1822, and RC1206FR-0718K2L are all designated as Active products. ERJ-8ENF1822V carries a "Not For New Designs" status and should be avoided for new applications.

Automotive AEC-Q200 Compliance: For applications requiring automotive-grade qualification, select from RMCF1206FT18K2, CRCW120618K2FKEA, ERJ-8ENF1822V, or KTR18EZPF1822. CR1206-FX-1822ELF and RC1206FR-0718K2L do not carry AEC-Q200 certification but feature moisture-resistant construction.

Inventory Availability: RMCF1206FT18K2 offers the highest inventory level (149,506 pcs), followed by RC1206FR-0718K2L (82,157 pcs) and ERJ-8ENF1822V (42,823 pcs).

Physical Dimensions: All parts conform to 1206 package specifications. Minor variations in seated height (0.024" to 0.030") are within standard PCB assembly tolerances and do not affect interchangeability.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMCF1206FG18K2 with any of the listed parts?

A: Yes, all listed parts meet the core electrical and mechanical specifications: 18.2 kOhms ±1%, 0.25W, 1206 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Selection should account for product status and application-specific certifications.

Q: What is the difference between AEC-Q200 and non-AEC-Q200 parts?

A: AEC-Q200 certification indicates automotive-grade qualification with defined reliability and quality standards. RMCF1206FT18K2, CRCW120618K2FKEA, ERJ-8ENF1822V, and KTR18EZPF1822 carry this certification. CR1206-FX-1822ELF and RC1206FR-0718K2L do not but are suitable for non-automotive applications.

Q: Why is ERJ-8ENF1822V marked "Not For New Designs"?

A: This designation indicates the part is in mature or declining production phase. While electrically equivalent and currently in stock, it should not be selected for new product designs. Prefer RMCF1206FT18K2, CRCW120618K2FKEA, KTR18EZPF1822, or RC1206FR-0718K2L for new applications.

Q: Are there physical dimension differences that affect PCB assembly?

A: All parts conform to 1206 (3216 Metric) package standards. Seated heights range from 0.024" to 0.030" (0.60mm to 0.75mm), which falls within standard PCB assembly tolerances and does not require design changes.

Q: Which substitute offers the best lead time?

A: RMCF1206FT18K2 has the highest inventory (149,506 pcs), providing optimal lead time availability. RC1206FR-0718K2L (82,157 pcs) and ERJ-8ENF1822V (42,823 pcs) are also well-stocked alternatives.

Q: Can I use moisture-resistant variants in place of standard thick film?

A: Yes. CR1206-FX-1822ELF and RC1206FR-0718K2L feature moisture-resistant construction while maintaining all electrical specifications. This provides enhanced reliability in humid environments without affecting electrical performance.

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