AF1206FR-0718RL Equivalent & Substitute Parts

Part Overview

The AF1206FR-0718RL is an 18 Ohm ±1% 0.25W (1/4W) thick film chip resistor in 1206 (3216 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 active in production with 886 pieces in stock.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility allows for functionally compatible alternatives from different manufacturers while maintaining electrical and mechanical specifications.

Substiute Parts

AF1206FR-0718RL

YAGEOIn Stock: 925AF1206FR-0718RL Datasheet

Current PartRFQ

AC1206FR-0718RL

YAGEOIn Stock: 1004AC1206FR-0718RL Datasheet

MFR RecommendedRFQ

RC1206FR-0718RL

YAGEOIn Stock: 25423RC1206FR-0718RL Datasheet

MFR RecommendedRFQ

CR1206-FX-18R0ELF

Bourns Inc.In Stock: 15687CR1206-FX-18R0ELF Datasheet

MFR RecommendedRFQ

CRCW120618R0FKEA

Vishay DaleIn Stock: 63006CRCW120618R0FKEA Datasheet

MFR RecommendedRFQ

CRCW120618R0FKEAHP

Vishay DaleIn Stock: 157912CRCW120618R0FKEAHP Datasheet

MFR RecommendedRFQ

ERJ-8ENF18R0V

Panasonic Electronic ComponentsIn Stock: 31075ERJ-8ENF18R0V Datasheet

MFR RecommendedRFQ

RMCF1206FT18R0

Stackpole Electronics IncIn Stock: 197837RMCF1206FT18R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AF1206FR-0718RL is determined by strict equivalence across the following critical parameters:

• Resistance value: 18 Ohms
• Tolerance: ±1%
• Package: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in physical dimensions (length, width, height) within the 1206 package tolerance, manufacturer-specific features (anti-sulfur, moisture resistant, pulse withstanding), and product status are noted but do not preclude substitution when these core parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, AEC-Q200 Qualified):

• AC1206FR-0718RL (YAGEO): Direct equivalent with moisture-resistant feature. Active production status. Recommended for automotive applications requiring AEC-Q200 compliance.
• CRCW120618R0FKEA (Vishay Dale): Meets all core specifications with AEC-Q200 qualification. Highest inventory availability (62,927 pcs). Suitable for automotive designs.
• RMCF1206FT18R0 (Stackpole Electronics Inc): AEC-Q200 qualified, active production. Largest inventory stock (197,769 pcs). Recommended for high-volume applications.

Secondary Substitutes (Active Status, Non-AEC-Q200):

• RC1206FR-0718RL (YAGEO): Meets electrical and mechanical specifications. Highest inventory among non-AEC-Q200 variants (25,400 pcs). Suitable for non-automotive applications.
• CR1206-FX-18R0ELF (Bourns Inc.): Active production, moisture-resistant. Suitable for general industrial applications.

Not Recommended for New Designs:

• ERJ-8ENF18R0V (Panasonic Electronic Components): Product status is "Not For New Designs." Use only for legacy system maintenance or repair.

Higher Power Alternative:

• CRCW120618R0FKEAHP (Vishay Dale): 0.75W (3/4W) power rating with pulse withstanding capability. Use only when higher power dissipation is required; not a direct substitute for 0.25W applications.

Frequently Asked Questions (FAQ)

Q: Can I use CRCW120618R0FKEAHP as a direct replacement for AF1206FR-0718RL?

A: CRCW120618R0FKEAHP has a higher power rating (0.75W vs. 0.25W). While it maintains the same resistance, tolerance, package, and temperature specifications, it is not a direct substitute. Use only if your circuit design requires higher power dissipation capability.

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

A: AEC-Q200 qualification indicates the part meets automotive industry reliability standards. AF1206FR-0718RL, AC1206FR-0718RL, CRCW120618R0FKEA, CRCW120618R0FKEAHP, ERJ-8ENF18R0V, and RMCF1206FT18R0 carry this qualification. RC1206FR-0718RL and CR1206-FX-18R0ELF do not. For automotive applications, use AEC-Q200 qualified parts.

Q: Why is ERJ-8ENF18R0V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued or is phasing out this product line. While existing inventory is available, it should not be used in new designs. Select from active production alternatives instead.

Q: Are there physical dimension differences between substitute parts?

A: All parts use the 1206 (3216 Metric) package. Minor variations exist within package tolerance: length ranges from 0.122" to 0.126" (3.10mm to 3.20mm), height from 0.024" to 0.030" (0.60mm to 0.75mm). These variations are within standard PCB design tolerances and do not affect substitutability.

Q: Which substitute has the best inventory availability?

A: RMCF1206FT18R0 (Stackpole Electronics Inc) has the highest inventory at 197,769 pieces. CRCW120618R0FKEAHP (Vishay Dale) is second with 157,806 pieces. Both are active production parts with AEC-Q200 qualification.

Q: Can I mix different manufacturers in the same circuit?

A: Yes. All listed substitutes meet identical electrical specifications (18Ω ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C). Mixing manufacturers is acceptable from an electrical standpoint. For automotive applications, ensure all selected parts carry AEC-Q200 qualification.