SA10-21EWA Kingbright Display (Dual-In-Line Sockets) In Stock
Kingbright SA10-21EWA is a 1-digit high-efficiency red 7-segment LED display with common anode configuration and decimal point, measuring 25.4 mm (1.0") digit height. Rated for 30 mA maximum forward current with IC-compatible drive, it delivers bright numeric readouts in industrial and consumer equipment. From $0.80, in stock with worldwide shipping.
- Manufacturer
- Kingbright
- Package
- Dual-In-Line Sockets
- Pin Count
- 10
- Lifecycle
- TRANSFERRED
- Datasheet
- SA10-21EWA Datasheet PDF
- Category
- Display
- Price
- From $2.1600(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1-digit common anode 7-segment LED display with 25.4 mm (1.0 inch) digit height for clear, far-distance readability
- High-efficiency red LED emitter with 30 mA maximum forward current and IC-compatible drive for direct microcontroller interfacing
- Includes decimal point digit for numeric precision display in instrumentation and metering applications
- RoHS-compliant, Pb-free construction in a standard 10-pin DIP package compatible with socket or through-hole PCB mounting
Applications
The SA10-21EWA is commonly used in panel meters, industrial counters, temperature controllers, and timing equipment where a bright 1-inch red 7-segment readout is required. Its IC-compatible common anode design enables direct drive from standard 74xx or CMOS logic with minimal external components. The 25.4 mm digit height provides excellent visibility at viewing distances of up to 3 meters in typical indoor industrial environments.
Specifications
| Pbfree Code | Yes |
| YTEOL | 6 |
| Additional Feature | IC COMPATIBLE |
| Color | HIGH EFFICIENCY RED |
| Color@Wavelength | Red |
| Configuration | COMMON ANODE, 1 DIGIT WITH DECIMAL POINT |
| Display Height | 25.4mm |
| Forward Current-Max | 0.03A |
| Number of Characters | 1 |
| Number of Functions | 1 |
| Optoelectronic Device Type | 7 SEG NUMERIC LED DISPLAY |
| Peak Wavelength | 625nm |
| Package | Dual-In-Line Sockets |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.40.20.00 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the digit height and forward current rating of the SA10-21EWA, and how do these affect display circuit design?
The SA10-21EWA has a 25.4 mm (1.0 inch) digit height with a maximum forward current of 30 mA per segment. Designers typically operate segments at 10-20 mA for normal brightness, using series resistors of 100-150 ohms from a 5 V supply to limit current and extend LED life while maintaining legible brightness at 1-3 meter viewing distances.
How does the common anode configuration of the SA10-21EWA influence microcontroller interface design compared to common cathode displays?
In the SA10-21EWA common anode configuration, the anode is tied to VCC (typically 5 V) and individual segments are activated by driving the cathode pins LOW through a current-limiting resistor of approximately 150 ohms. This differs from common cathode displays where segment pins are driven HIGH, meaning the SA10-21EWA is best driven by open-collector or active-low outputs from IC-compatible driver ICs or microcontroller GPIO with sink capability of at least 10 mA per segment.
Can the SA10-21EWA be driven directly by a 74HC595 shift register or similar IC without additional driver transistors?
The SA10-21EWA can be driven by a 74HC595 shift register when segment current is limited to under 25 mA per pin, which is achievable with a 150-ohm series resistor from a 5 V supply yielding approximately 15 mA per active segment. The 74HC595 output pins support sink currents of up to 25 mA, making direct drive feasible for applications where no more than 4 segments are simultaneously active, though a ULN2003 or similar transistor array is recommended for reliable full-segment operation.
What alternative Kingbright displays offer the same 25.4 mm digit height in different colors or common cathode configuration?
Kingbright offers the SA10-21GWA in green and SA10-21YWA in yellow, both sharing the same 25.4 mm digit height and 30 mA maximum forward current rating as the SA10-21EWA red version. For common cathode users, the SC10-21EWA provides an equivalent 1-inch high-efficiency red 7-segment display with identical mechanical dimensions, enabling a simple BOM swap between common anode and common cathode designs on the same PCB footprint.
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About Kingbright
Kingbright is a leading electronic component manufacturer. FindMyChip sources Kingbright ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.8720 | $4.87 |
| 22+ | $3.2480 | $71.46 |
| 78+ | $3.0044 | $234.34 |
| 100+ | $2.6500 | $265.00 |
| 500+ | $2.2705 | $1135.25 |
| 1000+ | $2.1600 | $2160.00 |
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