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MLX90290LUA-AAA-622-CR
Electronics Part Number
MLX90290LUA-AAA-622-CR-WXManufacturer
onsemi
MLX90290LUA-AAA-622-CR
Description
TO-92 Linear Analog Hall Effect SensorInventory
510 Pcs New Original In Stock
Compact single-axis Hall effect sensor in TO-92-3 package for cost-effective magnetic sensing solutions.
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Minimum 1
Minimum 1
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Freight
Basic cost: USD 70.00
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In-stock items: Ready to ship in 1-2 days
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Technical Specifications
Category
Optoisolators, Triac, SCR Output Optoisolators
Manufacturer
onsemi
Packaging
Cut Tape (CT) & Digi-Reel®
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
6-SMD, Gull Wing
Series
-
Base Product Number
MOC304
Product Status
Active
Approval Agency
UL
Number of Channels
1
Output Type
Triac
Voltage - Isolation
4170Vrms
Supplier Device Package
6-SMD
Turn On Time
-
Voltage - Forward (Vf) (Typ)
1.25V
Current - DC Forward (If) (Max)
60 mA
Zero Crossing Circuit
Yes
Voltage - Off State
400 V
Static dV/dt (Min)
1kV/µs
Current - LED Trigger (Ift) (Max)
5mA
Current - Hold (Ih)
400µA (Typ)
Data Sheet Document (D)
Datasheets
Download MOC3043SR2M Product Specification (PDF)
HTML Datasheet
MOC3043SR2M-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.49.8000
Additional Information
Other Names
MOC3043SR2MTR MOC3043SR2M-NDR MOC3043SR2MDKR MOC3043SR2MCT MOC3043SR2M-DG
Standard Package
1,000
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Frequently Asked Questions (FAQ)
What are the key design risks when using the MOC3043SR2M optoisolator in high-noise industrial envir
The MOC3043SR2M includes a zero-crossing detector which reduces EMI during AC switching, but its 1kV/µs static dV/dt rating may be insufficient in environments with fast voltage transients (e.g., motor drives or inductive loads). To mitigate false triggering, add an RC snubber network (e.g., 100Ω + 10nF, rated for >600V) across the triac output and ensure tight PCB layout with minimal loop area between the optotriac and main triac. Also, avoid routing high-dV/dt traces near the input side to prevent capacitive coupling through the isolation barrier.
Can I replace a MOC3041M with the MOC3043SR2M in an existing AC load control design without modifyin
Yes, the MOC3043SR2M is a direct functional upgrade over the MOC3041M and can typically be used as a drop-in replacement in surface-mount applications. Both share the same 6-SMD gull-wing package, similar forward voltage (~1.25V), and compatible trigger current (Ift ≤ 5mA). However, verify that your load operates below 400V AC, as the MOC3043SR2M’s off-state voltage rating matches the MOC3041M. The improved dV/dt immunity and RoHS3 compliance of the MOC3043SR2M make it preferable for modern designs, but always validate thermal performance under full load due to minor differences in internal triac characteristics.
How does the zero-crossing feature in the MOC3043SR2M affect inrush current when switching inductive
The zero-crossing circuit in the MOC3043SR2M significantly reduces inrush current by ensuring the triac turns on only when the AC voltage crosses near 0V. This is especially beneficial for inductive loads where peak voltage switching would otherwise cause high di/dt stress and contact erosion. However, for transformer loads with significant residual flux, zero-crossing turn-on may still result in moderate inrush due to core saturation timing. To further reduce stress, consider soft-start circuitry or pairing the MOC3043SR2M with a suitably rated snubberless triac (e.g., BTA16-600BW) that matches the application’s surge requirements.
Is the MOC3043SR2M suitable for 240V AC line switching in a humid or high-altitude environment, give
Yes, the MOC3043SR2M’s 4170Vrms isolation voltage exceeds typical reinforced insulation requirements for 240V AC mains (which generally require ≥3750Vrms), making it suitable for humid or high-altitude conditions where dielectric strength can degrade. With an MSL of 1 (unlimited floor life) and operating temperature range of -40°C to 85°C, it resists moisture-related failures. However, ensure proper creepage and clearance distances on the PCB (≥6.4mm for pollution degree 2) and conformal coating if used in condensing environments. The UL recognition further supports its use in end-products targeting global safety certifications.
What are the reliability implications of driving the MOC3043SR2M LED at its maximum forward current
Operating the MOC3043SR2M LED continuously at 60mA (its absolute maximum If) accelerates degradation of the infrared LED, potentially reducing CTR (current transfer ratio) over time and leading to premature failure or increased trigger current demand. For 24/7 operation, derate the LED current to 10–20mA—well below the 5mA Ift(max)—to ensure long-term reliability. Use a series resistor calculated for your supply voltage (e.g., 220Ω for 5V logic) and consider a safety margin for temperature rise. This conservative approach extends service life and maintains consistent triggering performance, especially critical in heater control where failure could lead to thermal runaway.
What are the key design risks when using the MOC3043SR2M optoisolator in high-noise industrial envir
The MOC3043SR2M includes a zero-crossing detector which reduces EMI during AC switching, but its 1kV/µs static dV/dt rating may be insufficient in environments with fast voltage transients (e.g., motor drives or inductive loads). To mitigate false triggering, add an RC snubber network (e.g., 100Ω + 10nF, rated for >600V) across the triac output and ensure tight PCB layout with minimal loop area between the optotriac and main triac. Also, avoid routing high-dV/dt traces near the input side to prevent capacitive coupling through the isolation barrier.
Can I replace a MOC3041M with the MOC3043SR2M in an existing AC load control design without modifyin
Yes, the MOC3043SR2M is a direct functional upgrade over the MOC3041M and can typically be used as a drop-in replacement in surface-mount applications. Both share the same 6-SMD gull-wing package, similar forward voltage (~1.25V), and compatible trigger current (Ift ≤ 5mA). However, verify that your load operates below 400V AC, as the MOC3043SR2M’s off-state voltage rating matches the MOC3041M. The improved dV/dt immunity and RoHS3 compliance of the MOC3043SR2M make it preferable for modern designs, but always validate thermal performance under full load due to minor differences in internal triac characteristics.
How does the zero-crossing feature in the MOC3043SR2M affect inrush current when switching inductive
The zero-crossing circuit in the MOC3043SR2M significantly reduces inrush current by ensuring the triac turns on only when the AC voltage crosses near 0V. This is especially beneficial for inductive loads where peak voltage switching would otherwise cause high di/dt stress and contact erosion. However, for transformer loads with significant residual flux, zero-crossing turn-on may still result in moderate inrush due to core saturation timing. To further reduce stress, consider soft-start circuitry or pairing the MOC3043SR2M with a suitably rated snubberless triac (e.g., BTA16-600BW) that matches the application’s surge requirements.
Is the MOC3043SR2M suitable for 240V AC line switching in a humid or high-altitude environment, give
Yes, the MOC3043SR2M’s 4170Vrms isolation voltage exceeds typical reinforced insulation requirements for 240V AC mains (which generally require ≥3750Vrms), making it suitable for humid or high-altitude conditions where dielectric strength can degrade. With an MSL of 1 (unlimited floor life) and operating temperature range of -40°C to 85°C, it resists moisture-related failures. However, ensure proper creepage and clearance distances on the PCB (≥6.4mm for pollution degree 2) and conformal coating if used in condensing environments. The UL recognition further supports its use in end-products targeting global safety certifications.
What are the reliability implications of driving the MOC3043SR2M LED at its maximum forward current
Operating the MOC3043SR2M LED continuously at 60mA (its absolute maximum If) accelerates degradation of the infrared LED, potentially reducing CTR (current transfer ratio) over time and leading to premature failure or increased trigger current demand. For 24/7 operation, derate the LED current to 10–20mA—well below the 5mA Ift(max)—to ensure long-term reliability. Use a series resistor calculated for your supply voltage (e.g., 220Ω for 5V logic) and consider a safety margin for temperature rise. This conservative approach extends service life and maintains consistent triggering performance, especially critical in heater control where failure could lead to thermal runaway.
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Sep 15 2026
