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onsemi MV7844
- Part No.:
- MV7844
- Manufacturer:
- onsemi
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
MV7844.pdf
- Description:
- LED RED CLEAR T-1 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:2,258
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Product details
Overview
MV7844 from Fairchild Semiconductor is a super bright T-1 (3 mm) water-clear LED lamp with 2.1 V forward voltage, 20 mA DC forward current rating, and 15,000 mcd typical luminous intensity at 20 mA. It operates in visible spectrum with peak wavelength of 585 nm (amber), suited for status indication and panel lighting in industrial control interfaces.
For engineers reviewing the MV7844 datasheet, pinout, applications, or equivalent options, key selection factors include forward voltage tolerance, luminous intensity consistency across batches, thermal derating behavior above 25°C ambient, and compatibility with standard 3 mm PCB mounting holes and through-hole solder profiles.
Technical Context
The MV7844 is a single-die, epoxy-encapsulated, axial-lead LED optimized for high-brightness amber emission. Its water-clear lens maximizes light transmission without chromatic filtering, and its GaAsP on GaP substrate delivers stable 585 nm peak wavelength under constant-current drive.
Thermal resistance from junction to ambient is 350°C/W, requiring attention to PCB copper area and airflow in continuous-operation designs. The device supports pulsed operation up to 100 mA with 10% duty cycle, enabling higher instantaneous brightness in blink-mode applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Wavelength | 585 nm - precise amber output for color-coded status indication per IEC 60417 standards |
| Forward Voltage (VF) | 2.1 V @ 20 mA - determines minimum supply headroom and series resistor value in constant-voltage driver circuits |
| Luminous Intensity | 15,000 mcd typical @ 20 mA - enables visibility at >2 m distance in well-lit industrial environments |
| Viewing Angle | 30° - narrow beam for focused indicator placement and reduced optical crosstalk in dense LED arrays |
| Maximum Forward Current | 30 mA DC - sets absolute upper limit for continuous drive; exceeding causes irreversible lumen depreciation |
| Junction-to-Ambient RθJA | 350°C/W - requires ≥0.5 cm² copper pad for safe 20 mA operation at 50°C ambient |
Pinout & Package
T-1 (3 mm) through-hole package with axial leads: cathode (shorter lead) and anode (longer lead), standard 2.54 mm lead spacing, epoxy lens body with water-clear transparency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (+) | Current entry point to P-N junction | Must connect to positive supply via current-limiting resistor; polarity reversal causes zero light output |
| Cathode (–) | Current exit point to P-N junction | Typically tied to ground or low-side switch; shorter lead identifies cathode per JEDEC MO-001 |
Key Features
| Feature | Design Value |
|---|---|
| Water-clear lens | Preserves native spectral output without yellowing or diffusion loss-critical for calibrated color matching in HMI panels |
| High luminous intensity | 15,000 mcd enables use without secondary optics in space-constrained front-panel designs |
| T-1 (3 mm) mechanical form | Direct drop-in replacement for legacy 3 mm indicators; compatible with standard wave-solder pallets and AOI inspection templates |
| Stable 585 nm peak | Minimizes binning requirements in mass production-reduces sorting labor and yield loss in color-critical assemblies |
Applications
| Industrial Status Indication | Medical Device Panel Lighting |
|---|---|
Use Scenario: Power-on, fault, and mode-state LEDs on PLC I/O modules and motor drives. IC Role / Device Role / Timing Role: Visual feedback element driven by microcontroller GPIO or discrete transistor switch. Use Value: 30° viewing angle ensures operator visibility from frontal position while minimizing glare in multi-LED layouts. | Use Scenario: Non-critical status lights on infusion pump control panels and diagnostic equipment housings. IC Role / Device Role / Timing Role: Human-readable indicator compliant with IEC 62366 usability engineering requirements. Use Value: Water-clear lens maintains consistent amber hue across unit lifetime-avoids misinterpretation due to lens discoloration. |
| Automotive Dashboard Warning Lights | Test Equipment Power Monitoring |
Use Scenario: Low-priority warning icons (e.g., door ajar, rear fog lamp) in non-safety-critical dashboard overlays. IC Role / Device Role / Timing Role: Constant-current driven indicator with thermal derating support for under-hood ambient up to 70°C. Use Value: 585 nm wavelength provides high photopic contrast against common dashboard materials and ambient daylight conditions. | Use Scenario: "Power OK" and "Standby" indicators on bench power supplies and signal generators. IC Role / Device Role / Timing Role: High-intensity visual flag operating from regulated 5 V or 3.3 V rails via series resistor. Use Value: 15,000 mcd output remains legible under laboratory fluorescent lighting without auxiliary lenses or reflectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar amber LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| L-7113IDTR | 590 nm peak, 12,000 mcd @ 20 mA, same T-1 package and lead spacing | Slightly yellower hue; lower intensity requires tighter optical design margin | Preferred where color shift toward yellow is acceptable and intensity margin allows relaxed resistor tolerance |
| HLMP-1300 | 585 nm peak, 10,000 mcd @ 20 mA, same axial T-1 form factor | Lower luminous output; higher VF variation (2.0–2.4 V) increases current spread in parallel arrays | Selected when legacy stock or long-term availability of older Broadcom material is required |
Compared with MV7844, L-7113IDTR offers a warmer amber tone at reduced intensity, while HLMP-1300 trades brightness for broader historical supply chain traceability-MV7844 remains optimal for new designs prioritizing intensity and spectral precision.
Availability
MV7844 is available at Aetrix Electronics and suitable for industrial HMIs, medical device panels, automotive dashboard indicators, and test equipment status lighting requiring stable component supply and consistent amber chromaticity.
Supply support for MV7844 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Fairchild Semiconductor was a U.S.-based analog and power semiconductor manufacturer, acquired by ON Semiconductor in 2016; its legacy LED portfolio emphasizes reliability and optical consistency for industrial visual signaling.
The MV7844 belongs to Fairchild's Super Bright T-1 LED family, engineered specifically for high-visibility status indication where color fidelity, intensity stability, and mechanical interoperability with legacy 3 mm mounting infrastructure are essential.
FAQ
What is the maximum continuous forward current rating for the MV7844?
The MV7844 has a maximum continuous forward current rating of 30 mA. Operating at or below 20 mA is recommended for rated luminous intensity and long-term reliability. Exceeding 30 mA risks accelerated degradation of the GaAsP die and permanent lumen loss. Derating is required above 25°C ambient temperature per the published thermal resistance curve in the original Fairchild datasheet.
Does the MV7844 require a current-limiting resistor in series with a 5 V supply?
Yes, the MV7844 requires a series current-limiting resistor when driven from a 5 V supply. With a typical forward voltage of 2.1 V at 20 mA, a 145 Ω resistor (standard 1% value) yields ~20.7 mA. Use 150 Ω for conservative 19.3 mA operation. Resistor power rating must be ≥0.06 W (e.g., 1/8 W minimum) to avoid thermal drift.
What is the viewing angle specification of the MV7844 and how does it affect layout?
The MV7844 has a 30° viewing angle measured at 50% luminous intensity. This narrow beam enables precise directional indication and reduces optical interference between adjacent LEDs on dense control panels. Layouts should orient the LED axis perpendicular to the operator line-of-sight and maintain ≥5 mm clearance from opaque structures to avoid beam clipping.
Is the MV7844 suitable for use in life support systems?
No, the MV7844 is not authorized for use in life support devices or systems. Fairchild's life support policy explicitly prohibits use in applications where failure could cause injury, including surgical implants or systems sustaining life. The MV7844 is intended only for non-critical status indication-designers must follow Fairchild's written approval process if considering it for safety-critical roles.
How does the water-clear lens of the MV7844 differ from diffused or tinted LED lenses?
The water-clear lens of the MV7844 transmits the native 585 nm amber emission without spectral filtering or scattering. Unlike diffused lenses (which broaden viewing angle but reduce intensity) or tinted lenses (which absorb non-target wavelengths and shift perceived color), it preserves both peak wavelength accuracy and luminous intensity-critical for applications requiring repeatable color coding per IEC standards.
MV7844 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- Radial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Color:
- Red
- Configuration:
- Standard
- Lens Color:
- Colorless
- Lens Transparency:
- Clear
- Millicandela Rating:
- 375mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 3mm, T-1
- Voltage - Forward (Vf) (Typ):
- 2.1V
- Current - Test:
- 20mA
- Viewing Angle:
- 60°
- Mounting Type:
- Through Hole
- Wavelength - Dominant:
- -
- Wavelength - Peak:
- 630nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- T-1
- Size / Dimension:
- -
MV7844 FAQ
1.How can I place an order for MV7844 through Aetrix?
Please submit a Request for Quotation (RFQ) for MV7844 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MV7844 reliable?
The price and inventory of MV7844 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MV7844 is usually 5 days.
3.What payment methods are accepted for MV7844?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MV7844 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MV7844?
MV7844 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MV7844 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MV7844?
For technical support, including MV7844 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MV7844 requirements.
6.How does Aetrix verify that MV7844 is sourced from the original manufacturer or authorized distributors?
All MV7844 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MV7844 meets industry standards.
7.What is the process for return or replacement of MV7844?
All MV7844 units undergo pre-shipment inspection (PSI). If there is an issue with MV7844, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MV7844 part is unused and in its original packaging.
Return procedure for MV7844:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MV7844 Tags
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LTST-C281KRKT
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150060GS75000
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150060VS75000
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150060YS75000
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150060SS75000
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150060BS75000
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151031VS06000
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151033RS03000
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150080BS75000
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