AF1206JR-078R2L Equivalent & Substitute Parts

Part Overview

The AF1206JR-078R2L is an 8.2 Ohms ±5% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by YAGEO. This part features anti-sulfur coating and automotive AEC-Q200 qualification, making it suitable for automotive and industrial applications requiring environmental protection. The part is active in production with 958 units currently in stock. Substitute parts are identified to provide design flexibility, supply chain alternatives, and tolerance/feature upgrades while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	8.2 Ohms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Resistance value: 8.2 Ohms (exact match required)
Package: 1206 (3216 Metric) footprint
Power rating: 0.25W minimum
Temperature coefficient: ±200ppm/°C
Operating temperature range: -55°C to 155°C minimum
RoHS3 compliance and MSL 1 rating

Tolerance Variations: Parts with ±1% tolerance are electrically compatible with ±5% applications and represent a performance upgrade. Parts with ±5% tolerance maintain exact specification equivalence.

Feature Variations:

Anti-sulfur coating (AF1206JR-078R2L): Environmental protection feature
Moisture resistant (AC1206FR-078R2L, RC1206FR-078R2L, RC1206JR-078R2L): Enhanced reliability
Pulse withstanding (SR1206JR-078R2L): Enhanced transient performance
AEC-Q200 automotive qualification: Available in multiple substitute options

All listed substitutes meet the core electrical and mechanical requirements for direct PCB footprint compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Resistance	Tolerance	Power	Features	AEC-Q200	Inventory
AF1206JR-078R2L	YAGEO	AF	8.2 Ω	±5%	0.25W	Anti-Sulfur	Yes	958
AC1206FR-078R2L	YAGEO	AC	8.2 Ω	±1%	0.25W	Moisture Resistant	Yes	6524
RC1206FR-078R2L	YAGEO	RC_L	8.2 Ω	±1%	0.25W	Moisture Resistant	No	5580
RC1206JR-078R2L	YAGEO	RC_L	8.2 Ω	±5%	0.25W	Moisture Resistant	No	87369
SR1206JR-078R2L	YAGEO	SR	8.2 Ω	±5%	0.25W	Pulse Withstanding	Yes	10770
CRCW12068R20JNEA	Vishay Dale	CRCW	8.2 Ω	±5%	0.25W	None Listed	Yes	21214

Engineering Selection Recommendations

For AEC-Q200 Automotive Applications: AC1206FR-078R2L, SR1206JR-078R2L, and CRCW12068R20JNEA all carry AEC-Q200 qualification. AC1206FR-078R2L provides tighter ±1% tolerance with moisture resistance. SR1206JR-078R2L adds pulse withstanding capability. CRCW12068R20JNEA offers an alternative manufacturer (Vishay Dale) with high inventory availability.

For Tolerance-Critical Designs: AC1206FR-078R2L and RC1206FR-078R2L both provide ±1% tolerance, suitable for applications requiring tighter resistance accuracy than the original ±5% specification.

For High-Volume Supply Chain Flexibility: RC1206JR-078R2L offers the highest inventory level (87,369 units) with ±5% tolerance matching the original specification. CRCW12068R20JNEA provides cross-manufacturer sourcing with 21,214 units available.

For Environmental Protection: AC1206FR-078R2L and RC1206FR-078R2L include moisture-resistant features. SR1206JR-078R2L adds pulse withstanding for transient-heavy applications.

All substitutes maintain identical operating temperature range (-55°C to 155°C), temperature coefficient (±200ppm/°C), RoHS3 compliance, and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can AC1206FR-078R2L replace AF1206JR-078R2L directly? A: Yes. Both parts share identical resistance (8.2 Ω), power rating (0.25W), package (1206), and operating temperature range. AC1206FR-078R2L provides ±1% tolerance (tighter than ±5%) and moisture resistance, making it a compatible upgrade. Both carry AEC-Q200 qualification.

Q: What is the difference between YAGEO and Vishay Dale options? A: CRCW12068R20JNEA (Vishay Dale) and AF1206JR-078R2L (YAGEO) are electrically and mechanically equivalent. Both are ±5%, 0.25W, 1206 package, AEC-Q200 qualified. CRCW12068R20JNEA has slightly different physical dimensions (0.126" L vs 0.122" L) and height (0.024" vs 0.026"), but both fit standard 1206 footprints. Selection depends on supply chain preference and inventory availability.

Q: Why does RC1206JR-078R2L have no AEC-Q200 rating? A: RC1206JR-078R2L is a standard industrial-grade resistor without automotive qualification. It is electrically and mechanically compatible with AF1206JR-078R2L but lacks automotive-specific testing and qualification. Use only in non-automotive applications or where AEC-Q200 is not required.

Q: Can I use ±1% tolerance parts in place of ±5% tolerance parts? A: Yes. ±1% tolerance parts (AC1206FR-078R2L, RC1206FR-078R2L) are direct substitutes for ±5% applications. The tighter tolerance represents improved accuracy and is backward-compatible with designs specified for ±5%.

Q: Are all substitutes available in Tape & Reel packaging? A: Yes. All listed substitutes are supplied in Tape & Reel (TR) packaging, maintaining compatibility with automated assembly processes.

Q: What does MSL 1 (Unlimited) mean for these parts? A: MSL 1 indicates the lowest moisture sensitivity level, meaning these parts have unlimited shelf life and require no special moisture-control storage or handling procedures prior to soldering.

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