7, 14 & 16 segment display modules specifications



These modules seldom have very precise specifications on EBay or Aliexpress, here I have measured my displays and listed size and current consumption.

This is a supplement to the the 7 & 14 segment display driver library, that is here

Filter specifications like "- 30", means from previous value up to, but not including 30, use CTRL-Click or SHIFT-Click to select multiple elements.

Image	Display	Digits	Chainable	Decimal point & Colon	Type	Color	Digit height	Module height	Module width	Data pins	Power led	mA off	mA blank	mA low	mA high
	HC164 2x4 digit	8					9	29.2	35.4	2		0.5	0.5		19
	HC595 2 digit	2					9	18	35.7	3		0.01	0.01		72
	HC595 4 digit	4					9.1	21.9	40.1	3		0	0		23
	HC595 4 digit	4					10.2	23.3	50.3	3		0	0		35
	HC595 4 digit	4					20.3	33	81	3		0	0		58
	HC595 8 digit	8					9.1	21.9	71.5	3		0.02	0.02		85
	HC595 Large static	1					44.4	67	38	3		0	0		41
	HC595 Static single	1					14	30.2	12.6	3		0	0		50
	HC595 Static	2					12.6	25.5	38.2	3		0	0		102
	HC595 Static	3					12.6	25.5	50.8	3		0	0		148
	HC595 Static	4					12.6	25.5	63.5	3		0	0		196
	HT1621 6 digit LCD display	6					14.9	30.5	76.3	3		0.13	0.42		21
	HT1621 12 digit LCD display	12					9.9	32.6	95.6	3		0.1	0.4		0.4
	HT16K33 4 digit LED display (DIY)	4					20	70	72	2		0.26	0.26	7.5	94
	HT16K33 6 digit LED display (DIY)	6					14	36.1	75.8	2		0.26	0.26	13	195
	HT16K33 4 digit LED display	4					14	26.8	50.3	2		0.26	0.26	7.2	114
	HT16K33 4 digit large LED display	4					30	51	120	2		0.24	0.24	3.6	58
	HT16K33 8 digit LED display	8					14	20.1	101	2		0.25	0.25	9	136
	HT16K33 4 digit 14 segment LED display	4					13.7	28.3	51	2		0.24	0.24	10	162
	HT16K33 4 digit 14 segment LED display	6					13.4	40	76	2		0.25	0.25	18	283
	HT16K33 4 digit 14 segment LED display	6					13.4	40	76	2		0.25	0.25	18	283
	HT16K33 8 digit 14 segment LED display	8					13.7	21.3	101.7	2		0.3	0.3	18	280
	HT16K33 8 digit 14 segment LED display	8					13.7	21.3	101.7	2		0.3	0.3	15	233
	HT16K33 4 digit 16 segment LED display	4					20.1	40	81	2		0.26	0.26	13	200
	HT16K33 4 digit 16 segment LED display	4					11.9	28.2	41.2	2		3.8	3.8	14	100
	HT16K33 4 digit 16 segment LED display	4					11.9	28.2	41.2	2		3.8	3.8	14	100
	MAX7219 8 digits	8					9.1	22	70.9	3		0.02	6	15.3	285
	MAX7219 8 digits	8					9.1	15.1	82.6	3		0.02	5	13	220
	MAX7219 8 digits	8					14.2	19.2	102	3		0.02	10	24	415
	TM1637 4 digit (Black PCB)	4					14	27.1	66.1	2		0.15	0.15	4.5	60
	TM1637 4 digit (Black PCB)	4					14	27.1	66.1	2		2.5	2.5	7	60
	TM1637 4 digit (Blue PCB)	4					9.1	23.5	41.8	2		0.16	0.16	5	65
	TM1637 4 digit (Black PCB)	4					9.1	22.5	45.1	2		3.3	3.3	9	79
	TM1637 4 digit (Black PCB)	4					9.1	22.5	45.1	2		3.3	3.3	9	78
	TM1637 4 digit (Black PCB)	4					9.1	22.5	45.1	2		3.3	3.3	9	74
	TM1637 4 digit (Black PCB)	4					9.1	22.5	45.1	2		3.3	3.3	8	67
	TM1637 4 digit (Black PCB)	4					9.1	22.5	45.1	2		3.3	3.3	7.2	60
	TM1637 6 digit RobotDyn	6					14.1	22.2	90	2		3.3	3.3	11	111
	TM1637 6 digit RobotDyn	6					14.1	22.3	90	2		3.3	3.3	9.5	90
	TM1637 6 digit, 6+ keys	6					9.2	29	44	2		0.15	0.15	8	103
	TM1638 4 digit	4					9.1	25.1	66	3		10	11	19	103
	TM1638 8 digit, 8 indicators, 8 keys	8					9.2	49.4	76	3		3.5	4	23	275
	TM1638 8 digit, 16 indicators, 8 keys	8					14	51.6	101	3		0.2	0.7	23	101
	TM1638 8 digit, 16 keys	8					9.1	70.3	70	3		0.7	5.5	18	235
	TM1638 8 digit, 2 indicators, 24 keys	8					9.2	99.9	80	3		11	11	28	250

• Image: Hold cursor above image to see a larger version.
• Display: A display from my driver documentation, if I have multiple colors they are all included here. Click on it to see information in driver library.
• Digits: Number of digits on the display.
• Chainable: More display modules can be connected to the same outputs and sometimes mounted edge to edge (E to E).
• Decimal point & Colon: The configuration of my displays, it may be possible to get the opposite.
• Color: The colors I have tested with, it is often possible to get the module with other LED colors (Red, Green, Blue, Yellow, White).
• Digit height: The height of the actual digit in mm, from the top of top segment to bottom of bottom segment.
• Module height: The height of the module, this is the size of on of my modules.
• Module width: The width of the module, this is the size of on of my modules.
• Data pins: 2 or 3 wire connection in addition Vcc and GND must also be connected.
• Power led: Some displays has a power led on the back, this will use a few mA current.
• mA off: Current consumption when display is blank and the setOn(false) is used, this will put some displays in a low power mode.
• mA blank: Current consumption when display is blank.
• mA low: Current consumption when display is at lowest brightness.
• mA high: Current consumption when display is at highest or only brightness.

Current consumption on display module is depend on LED color (red-green-yellow are similar, blue-white are similar), voltage, resistors and driver chip. I have used a separate 5V power supply for the display. With lower voltage (Like after Arduino input diode or regulator) the current consumption may be lower.
My measurement are for my displays, other displays of similar type will probably not use exactly the same current, but will usual be near my measured value.

With the "HT1621 6 digit LCD display" I turned backlight off for off and blank current measurements (Backlight is not controlled from this driver).


Sizes

Here are the 7-segment display markings sorted by sizes, this can often be seen on Ebay photos and reveal if they are specifying a wrong size. The inch specification in the type number do not always match my measurement exactly.
The type number may have a letter to denote color: R=Red, G=Green, Y=Yellow/Amber, B=Blue and W=White.



0.36" or 9 to 9.2mm (Multiple sizes here are sold as 0.36")

0.32" is 8.128mm
0.34" is 8.636mm
0.36" is 9.144mm













These displays often start with 32, 34 or 36 in the type number, the size do not always match the type number, but usual is between 9 and 9.2mm.



0.4" or 10.2mm

0.4" is 10.16mm





0.5" or 12.6mm

0.5" is 12.7mm



This brand uses another numbering scheme: SM__050_ where the 050 is 0.50" display.



0.56" or 14mm (Multiple sizes are sold as 0.56")

0.54" is 13.716mm
0.56" is 14.224mm





These displays often start with 54 in the type number.



0.8" or 20.3mm

0.8" is 20.32mm





1.2" or 30mm

1.2" is 30.48mm



The first 3 digits are 120, probably for 1.20"



1.8" or 44.4mm

1.8" is 45.72mm



The first 3 digits are 180, probably for 1.80"