LA-401MN ROHM Semiconductor Display (Dual-In-Line Sockets) In Stock
LA-401MN is a ROHM Semiconductor green 1-digit 7-segment LED display with common cathode configuration, 10.16 mm digit height, and a decimal point, housed in a 9.6 mm x 13 mm 10-pin plastic DIP package. Key specs include a maximum forward voltage of 2.8 V, maximum forward current of 20 mA, and minimum luminous intensity of 5.6 cd. In stock with worldwide shipping for panel meter, instrumentation, and industrial display applications.
- Manufacturer
- ROHM Semiconductor
- Package
- Dual-In-Line Sockets
- Pin Count
- 10
- Lifecycle
- END OF LIFE
- Datasheet
- LA-401MN Datasheet PDF
- Category
- Display
- Temp Range
- -25.0°C to 75.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Green 1-digit 7-segment display with 10.16 mm digit height and decimal point for clear numeric readout in dim or bright environments
- Common cathode configuration with minimum 5.6 cd luminous intensity enables direct MCU or driver IC interfacing without additional inverting logic
- Compact 9.6 mm x 13 mm 10-pin DIP package simplifies PCB layout and through-hole assembly for instrument panel displays
Applications
The ROHM LA-401MN is used in digital panel meters, industrial process displays, and laboratory instruments where a single green digit with decimal point is required for numeric value readout. Its 10.16 mm digit height ensures legibility at viewing distances up to 2 meters in typical indoor lighting conditions. The common cathode 7-segment configuration integrates directly with standard display driver ICs or microcontroller GPIO pins driving up to 20 mA per segment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Color | GREEN |
| Color@Wavelength | Green |
| Configuration | COMMON CATHODE, 1 DIGIT WITH DECIMAL POINT |
| Display Height | 10.16mm |
| Forward Current-Max | 0.02A |
| Forward Voltage-Max | 2.8V |
| JESD-609 Code | e1 |
| Luminous Intensity-Min | 5.6cd |
| Luminous Intensity-Nom | 16mcd |
| Number of Characters | 1 |
| Number of Functions | 1 |
| Optoelectronic Device Type | 7 SEG NUMERIC LED DISPLAY |
| Peak Wavelength | 563nm |
| Terminal Finish | Tin/Silver/Copper (Sn/Ag/Cu) |
| Package | Dual-In-Line Sockets |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.40.20.00 |
| Country of Origin | Japan, Mainland China, Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What forward voltage and current specifications must be respected when driving the LA-401MN from a microcontroller?
The LA-401MN has a maximum forward voltage of 2.8 V per segment and a maximum forward current of 20 mA per segment. When driving directly from a 3.3 V or 5 V microcontroller GPIO, a current-limiting resistor must be placed in series with each segment; for a 5 V supply and 2.0 V typical forward drop, a 150-ohm resistor limits current to approximately 20 mA per segment, staying within the rated maximum.
How bright is the LA-401MN green display and what viewing conditions is it designed for?
The LA-401MN provides a minimum luminous intensity of 5.6 cd across its green LED segments at rated forward current. This brightness level is suitable for indoor panel meter displays and instrument racks viewed at distances of 0.5 m to 2 m under normal office or industrial ambient lighting. The green 550 nm emission wavelength offers good contrast against typical dark or gray instrument panel backgrounds.
Can the LA-401MN be multiplexed with other digits to build a multi-digit display system?
Yes, the LA-401MN common cathode configuration is designed for multiplexed display operation, where each digit's common cathode is strobed sequentially by a driver transistor or demultiplexer IC. In a 4-digit multiplexed system running at 1 kHz per digit (4 kHz total refresh), peak segment current can be increased to approximately 60 mA to maintain 5.6 cd average brightness, provided the duty cycle is 25% per digit and the 20 mA DC rating is not exceeded in average current.
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