AF1206JR-071R3L Equivalent & Substitute Parts

Part Overview

The AF1206JR-071R3L is a 1.3 Ohm ±5% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by YAGEO. This thick film resistor features anti-sulfur coating and automotive AEC-Q200 qualification, designed for automotive and industrial applications requiring robust performance across -55°C to 155°C operating temperature range. The part is active in production with 803 units currently in stock.

Equivalent and substitute parts are identified when electrical specifications, mechanical dimensions, and compliance ratings align within acceptable parameters for direct circuit board replacement.

Key Parameters

Parameter	Specification
Resistance Value	1.3 Ohms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Compliance	AEC-Q200, RoHS3, REACH Unaffected
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AF1206JR-071R3L is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 1.3 Ohms
Package / Case: 1206 (3216 Metric)
Power rating: 0.25W minimum
Temperature coefficient: ±200ppm/°C
Operating temperature range: -55°C ~ 155°C minimum
Compliance: AEC-Q200 and RoHS3

Tolerance Consideration: The AF1206JR-071R3L specifies ±5% tolerance. Substitute parts with ±1% tolerance (tighter tolerance) are electrically compatible and provide improved accuracy for the same resistance value. Parts with ±5% tolerance maintain identical electrical performance characteristics.

Feature Variations: The main part includes anti-sulfur coating. Substitute parts with moisture-resistant features provide equivalent environmental protection through alternative material compositions, maintaining reliability in automotive applications.

Parameter Comparison

Parameter	AF1206JR-071R3L	AC1206FR-071R3L	RC1206FR-071R3L	RC1206JR-071R3L
Manufacturer	YAGEO	YAGEO	YAGEO	YAGEO
Resistance	1.3 Ohms	1.3 Ohms	1.3 Ohms	1.3 Ohms
Tolerance	±5%	±1%	±1%	±5%
Power Rating	0.25W	0.25W	0.25W	0.25W
Package	1206	1206	1206	1206
Composition	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±200ppm/°C	±200ppm/°C	±200ppm/°C	±200ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
AEC-Q200	Yes	Yes	No	No
RoHS3 Compliant	Yes	Yes	Yes	Yes
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active
Inventory (Pcs)	803	4652	1240	15968

Engineering Selection Recommendations

Primary Substitute (Highest Compatibility): AC1206FR-071R3L is the preferred substitute for AF1206JR-071R3L. Both parts maintain AEC-Q200 automotive qualification and RoHS3 compliance. The AC series offers ±1% tolerance versus the AF series ±5%, providing improved accuracy while maintaining identical electrical performance and operating parameters. Both parts are active in production with robust inventory availability.

Secondary Substitutes (Conditional Use): RC1206FR-071R3L and RC1206JR-071R3L are electrically compatible alternatives. These parts match all critical electrical and mechanical parameters, including resistance value, power rating, package dimensions, and temperature range. However, these parts do not carry AEC-Q200 automotive qualification. Selection of RC series parts is appropriate for non-automotive applications or where automotive qualification is not a design requirement.

RC1206JR-071R3L maintains ±5% tolerance matching the original AF1206JR-071R3L specification, while RC1206FR-071R3L provides ±1% tolerance. Both RC series parts feature moisture-resistant composition and are available in high inventory quantities.

Frequently Asked Questions (FAQ)

Q: Can AC1206FR-071R3L replace AF1206JR-071R3L in automotive applications? A: Yes. Both parts carry AEC-Q200 automotive qualification and maintain identical operating temperature range (-55°C ~ 155°C), power rating (0.25W), and package dimensions (1206). The AC series ±1% tolerance provides improved accuracy compared to the AF series ±5% tolerance.

Q: What is the difference between ±5% and ±1% tolerance specifications? A: Tolerance defines the maximum deviation from the nominal resistance value. AF1206JR-071R3L (±5%) allows resistance variation of ±0.065 Ohms from 1.3 Ohms. AC1206FR-071R3L (±1%) restricts variation to ±0.013 Ohms. Both are electrically compatible; ±1% tolerance provides tighter accuracy for precision applications.

Q: Are RC1206 series parts suitable for automotive applications? A: RC1206FR-071R3L and RC1206JR-071R3L do not carry AEC-Q200 automotive qualification. These parts are suitable for industrial and consumer applications where automotive qualification is not required. For automotive designs, AC1206FR-071R3L or AF1206JR-071R3L are the appropriate selections.

Q: Do all substitute parts have identical physical dimensions? A: Yes. All listed substitute parts use the 1206 (3216 Metric) package with identical dimensions: 0.122" L x 0.063" W (3.10mm x 1.60mm) and maximum seated height of 0.026" (0.65mm). Direct board-level substitution is mechanically compatible.

Q: What is the significance of MSL 1 (Unlimited) rating? A: MSL 1 indicates the lowest moisture sensitivity level. Parts with this rating require no special moisture control during storage, handling, or assembly. All listed parts carry MSL 1 rating, ensuring consistent moisture management requirements across substitutions.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed parts (AF1206JR-071R3L, AC1206FR-071R3L, RC1206FR-071R3L, RC1206JR-071R3L) are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

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