LA-101VA ROHM Semiconductor Display (Dual-In-Line Sockets) In Stock
ROHM LA-101VA is a 1-digit red 7-segment LED display with common anode configuration and decimal point, featuring a 25.4 mm display height. Key specs: forward voltage max 5.6V, max forward current 15 mA per segment, DIP package for through-hole mounting. Ideal for industrial meters, panel instruments, and embedded system status displays requiring bright, easily readable numeric output.
- Manufacturer
- ROHM Semiconductor
- Package
- Dual-In-Line Sockets
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LA-101VA 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
- 1-digit 7-segment red LED display with 25.4 mm character height for easy visibility at distance
- Common anode configuration with decimal point supports flexible digit multiplexing in multi-digit display designs
- Through-hole DIP mounting with forward current rating of 15 mA per segment for reliable, long-life operation
Applications
The ROHM LA-101VA single-digit 7-segment LED display is commonly used in digital panel meters, industrial temperature controllers, and embedded system diagnostic displays where a clear, bright red numeric readout is required. Its 25.4 mm character height ensures visibility across control panel installations and laboratory instruments even under ambient lighting. The common anode configuration simplifies interfacing with microcontroller GPIO or dedicated segment driver ICs in battery-powered and mains-powered equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Color | RED |
| Color@Wavelength | Red |
| Configuration | COMMON ANODE, 1 DIGIT WITH DECIMAL POINT |
| Display Height | 25.4mm |
| Forward Current-Max | 0.015A |
| Forward Voltage-Max | 5.6V |
| JESD-609 Code | e1 |
| Number of Characters | 1 |
| Number of Functions | 1 |
| Optoelectronic Device Type | 7 SEG NUMERIC LED DISPLAY |
| Peak Wavelength | 650nm |
| 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 are the forward voltage and current limits for each segment of the ROHM LA-101VA display?
Each segment of the ROHM LA-101VA has a maximum forward voltage of 5.6V and a maximum forward current of 15 mA. When designing drive circuits, engineers typically operate segments at 10 mA for a balance between brightness and power consumption, using current-limiting resistors calculated for the supply voltage minus the typical LED forward voltage of around 2.0V to 2.2V for red LEDs.
How does the common anode configuration of the LA-101VA affect multiplexing in multi-digit display designs?
In the LA-101VA's common anode configuration, all segment anodes are connected to a shared supply rail (typically 5V), while individual segment cathodes are driven low by the microcontroller or display driver to illuminate each segment. For multi-digit multiplexed displays using several LA-101VA units, the common anodes of each digit are switched sequentially at 1 kHz or faster, allowing 4 to 8 digits to share a single set of 8 segment driver lines while maintaining flicker-free readability.
What character height does the LA-101VA provide, and at what viewing distances is it legible for panel instrument use?
The ROHM LA-101VA offers a 25.4 mm (1 inch) character height, which provides comfortable legibility at distances of up to 3 to 5 meters under normal indoor lighting conditions. This height is well suited for front-panel display of temperature, voltage, current, or count values in industrial instruments, bench-top test equipment, and HVAC control panels where operators need to read values from across a room.
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