Low Current Pure Green 20.32mm (0.8-Inch) 3-Digit 7-Segment Common Cathode LED

Product Specification

Low Current Pure Green 20.32mm (0.8-Inch) 3-Digit 7-Segment Common Cathode LED Display for Temperature Controllers
Product Overview
Introducing the Low Current Pure Green 3-Digit 7-Segment Common Cathode LED Display-a high-visibility, energy-saving solution engineered for temperature controllers, instrument panels, and home appliances. Designed to prioritize large-digit readability, ultra-low power use, and stable performance, this 3-digit display excels at showing temperature metrics: room thermostats (e.g., "22°C"), industrial process temps (e.g., "150°C"), or freezer monitors (e.g., "-18°C").
Its 20.32mm (0.8-inch) digit height ensures exceptional readability from 1-3 meters (typical for wall-mounted controllers or large appliance panels), making it ideal for users who need to check temps from a distance. The pure green light (515-525nm) offers a eye-friendly, distinct glow that stands out without glare, while the low current design minimizes energy consumption-critical for battery-powered or energy-efficient temperature devices.
With common cathode polarity, RoHS certification, and easy mounting options, this display balances durability, usability, and compliance-perfect for 24/7 operation in temperature-sensitive applications.

Product Image

Key Features (Temperature Controller-Optimized)
1. Large-Digit Visibility for Clear Temp Readouts
20.32mm (0.8-Inch) Big Digits: Among the larger 3-digit displays in its category, it's highly readable from across rooms (e.g., living room thermostats) or factory floors (industrial controllers). No squinting to distinguish "8" from "0" or decimal points (e.g., "24.5°C")-critical for accurate temp monitoring.
Pure Green Illumination (515-525nm, 120-140mcd): Pure green light is gentle on the eyes during prolonged viewing (e.g., office thermostats) and highly distinguishable in bright environments (e.g., sunlight through kitchen windows). It avoids the harshness of red or the glare of white, making it ideal for daily-use temperature controllers.
Big Viewing Angle: Uniform light distribution ensures readability from off-center positions (e.g., glancing at a wall controller while cooking)-no need to stand directly in front to check temps.
2. Low Current & Energy Efficiency
Extremely Low Current Operation: Engineered for minimal power draw (paired with low power consumption), it extends battery life for portable temperature indicators (e.g., handheld fridge thermometers) by up to 40% compared to standard displays. For plugged-in devices (e.g., smart thermostats), it cuts long-term electricity costs.
Optimized Forward Voltage (2.8-3.3V/LED): Compatible with standard 5V/12V power supplies used in most temperature controllers-no need for custom voltage converters, simplifying circuit design and reducing power waste.
3. Stable Performance & Easy Integration
Wide Environmental Adaptability: Withstands temperature fluctuations (-10°C to 60°C, typical for indoor/outdoor use) and minor vibrations (e.g., appliance movement, controller handling)-maintains consistent brightness and color, no flickering during temp updates (e.g., when AC cycles on/off).
Dual Mounting Options: Easy to mount on PC boards (for automated mass production) or sockets (for manual replacement/maintenance)-flexible for high-volume home appliances (e.g., large ovens) and custom industrial controllers.
IC Compatibility: Works with standard temperature controller driver ICs (e.g., TM1637, HT1621, MAX7219)-seamlessly integrates with temp-sensing firmware (e.g., real-time sampling, high/low temp alerts) without extra wiring.
4. Durability & Compliance
Long Lifetime (50,000+ Hours): High-quality pure green LEDs match the 8-10 year service life of most temperature controllers and home appliances-eliminates frequent display replacements, reducing maintenance hassle.
RoHS Certified: Free from lead, mercury, and harmful substances-safe for home use (even around food or children) and export to global markets (EU, North America, Asia), meeting consumer and industrial safety standards.
Multi-Color Versatility: Beyond pure green, available in red, blue, yellow green, amber, orange, and pure white-flexible for functional cues (e.g., red for "high temp alert", green for "normal") or brand-specific designs.

Technical Specifications

Category	Parameter	Specification (Temperature Controller-Optimized)
Basic Design	Display Type	3-Digit 7-Segment LED Display (supports decimals/minus signs for temps)
	Polarity	Common Cathode
	Digit Height	20.32mm (0.8 inch)
	Package Dimensions (L*W*H)	53.8*25.8*9.2mm / 59.3*27.5*8.4mm (dual-spec options for diverse installations)
	Face Colour	Black
Optical Performance	Emitting Color	Pure Green
	Wavelength	515-525nm
	Luminous Intensity	120-140 mcd
Electrical Parameters	Forward Voltage (VF)	2.8-3.3V per LED
	Current Characteristic	Extremely low current (optimized for energy efficiency)
	Power Consumption	Low
Quality & Compliance	Core Advantages	Large digits, low current, big viewing angle, long lifetime
	Certificate	RoHS
	Available Colors	Red, blue, yellow green, pure green, amber, orange, pure white

Applications
This display is tailored for temperature controllers and high-visibility devices, including:
Temperature Controllers: Wall thermostats (residential/commercial), industrial process temp monitors (e.g., "80°C" for chemical tanks), freezer/refrigerator controllers (e.g., "-20°C"/"5°C").
Home Appliances: Large ovens (bake temp "180°C"), electric grills (cook temp "200°C"), smart refrigerators (large-format temp displays).
Instrument Panels: Audio equipment (volume "50"), industrial sensors (pressure "100kPa"), numeric displays (counter "999").

Order & Logistics Information

Logistics Item	Details
Minimum Order Quantity (MOQ)	1000 Pieces
Trade Term	EXW (Ex Works)
Payment Terms	L/C, T/T, WU (Western Union), Money Gram
Place of Origin	Guangdong, China (Mainland)
Means of Transport	Ocean, Air, Land
Production Capacity	20,000 Pieces/Day
Packing	EPE + Carton (protects displays from vibration/damage during shipping)
Delivery Date	5-7 Days (after order confirmation and payment)
Brand Name	Light-Bo

Contact Us
Our team specializes in energy-efficient LED displays for temperature control, providing 24-hour support to help you optimize your product's usability, cost-effectiveness, and market appeal!

• Absolute Maximum Ratings(Ta=25ºC)

  Parameter	Symbol	Ratings	Unit
  Forward Current(per dice)	Ipm	20	mA
  Reverse Voltage(per dice)	Vr	5	V
  Power Dissipation(per dice)	Pm	80	mW
  Operating Temperature Range	Topr	-40~+85	ºC
  Storage Temperature Range	Tstg	-40~+85	ºC
  Solder Temperature(≤3 seconds)	Th	260	ºC

   

  Code:Yellow Green- J

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	1.8		2.4	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	30		40	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	569		574	nm

  
  

  Code:Amber/Yellow -Y

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	1.8		2.5	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	60		80	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	585		595	nm

  
  

  Code:Orange -F 

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	1.8		2.4	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	60		80	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	600		605	nm

  
  

  Code:Super Bright Red -R

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	1.8		2.2	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	50		60	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	630		635	nm

  
  

  Code:Ultra Bright Red -UR

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	1.8		2.2	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	80		100	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	625		635	nm

  
  

  Code:Pure Green -G

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	2.6		3.2	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	120		180	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	515		525	nm

  
  Code:Ultra Bright Blue -BH

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	2.8		3.2	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	120		140	mcd
  Spectrum With Of Half Value	△λ	If=10mA		20		nm
  Wavelength	Dλ	If=10mA	460		465	nm

• 
  

• Code:Ultra Bright White -WH

  Parameter	Symbol	Condition	Min	Typ	Max	Unit
  Forward Voltage	Vf	If=10mA	2.8		3.2	V
  Reverse Voltage	Vr	Ir=10uA	5			V
  Luminous Intensty	Iv	If=10mA	120		140	mcd
  LED color Temperature	K	If=10mA	5500	20	6800	K
  Chromaticity Coordinates	X/Y	If=10mA	0.29,0.32		0.30,0.33	nm

• 
  

SHENZHEN GUANGZHIBAO TECHNOLOGY CO., LTD. (BRAND: LIGHT-BO)stablished in 2006 , A company that integrates R & D, manufacturing and sales of optoelectronics LED Displays . ISO 9001 2015 Quality Management Systems certified company .  With more than 15 years OEM and ODM experience .

LIGHTBO has been committed to provide high quality and low cost customized solutions to help customers reduce cost and enhance competitiveness. 
 

7 Segment LED Display, Customized LED Display, Numeric LED Display, Dot matrix LED Display, widely used for home appliances,tempearture indicators, humidity indicators, refrigerator controller,thernostats indicator,heating and cooling control and so on

FAQ(Frequently Asked Questions)
Q1 Are you trading company or manufacturer
A: We are original manufacturer with more than 20 years experience in optoelectronic LED displays . 
Q2 What is your main products 
A: Our main products include 7 Segment LED display, SMD LED Display,Dot matrix LED Display, Arrow LED display, Custom Design LED Display ,LED light bar,Through hole led, SMD LEDs,LED Backlights, and so on .
Q3 What is your MOQ
A: Our MOQ is 1000 pcs , We can also accept sample orders and small orders with quantity less than our MOQ .
Q4 Before placing order, Can I get some samples for test
A: Yes. We can provide 5-10 free samples for your testing, but the freight cost will be borne by the customer. 
Q5 How long is your delivery time
A: Delivery time:About 10-20 days; According to order quantity and raw materials. If you have urgent order,and we have raw materials in stock,
we can adjust our production plan to make it ready within 7-10 days .
Q6 What is your terms of payment
A: We accept bank transfer,T/T,Western Union and Paypal with small amount. Detailes of payment methods can be negotiatble.
Q7 Can you quote me FOB prices
A: Yes. We can quote you prices based on incoterms EXW, FOB, CIF,DDP.
Q8 How can I get your catalogue and price list
A: Yes . Please let us know your email address or contact us from website directly for our catalogue and price list .
Q9 Can I negotiate the prices
A: Yes, we may consider discounts for bulk orders.
Q10  How much will the shipping charges be
A: It depends on the size of your shipment and the method of shipping.
We will offer the charge to you as you requested.
Q11 Can you do custom design products 
A: Yes , OEM&ODM service are available .We can customize the sizes,led color and functional icons according to your requirements. 
Q12 If I send my design , can you make it for myself only ,and will not show it to any one else 
A: Yes , we will not show it or sell to others without your authorization.
Q13 What will be the samples lead time for customzied products 
A: Samples lead time will be about 20-25 working days after receiving mold cost and mold drawing approval from customers . 
Q14 What is the shipping methods
 A:We usually ship the goods by DHL, FEDEX,UPS,EMS,BY AIR,BY SEA etc, also you can choose the other way that best for you.
Q15 How do you ensure the quality of your products
A: we are ISO 9001 QMS ceritified manufacturers with more than 20 years experience ,We conduct twice 100% percent test for all of our products before shipment .