LN516RA 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The Panasonic LN516RA is a single-character red 7-segment LED display in 10-DIP packaging with common anode configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The display operates at 2.2V forward voltage with 20mA test current and provides 0.6mcd brightness in a compact 0.748" × 0.484" form factor.

Key Parameters

Parameter	Value
Manufacturer Part Number	LN516RA
Manufacturer	Panasonic Electronic Components
Display Type	7-Segment, Single Character
Common Pin Configuration	Common Anode
Color	Red
Package / Case	10-DIP (0.600", 15.24mm)
Voltage - Forward (Vf) Typical	2.2V
Current - Test	20mA
Digit/Alpha Size	0.57" (14.40mm)
Physical Dimensions	0.748" H × 0.484" W × 0.315" D (19.00mm × 12.30mm × 8.00mm)
Millicandela Rating	0.6mcd
Wavelength - Peak	700nm
Power Dissipation (Max)	60mW
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the LN516RA must satisfy the following core compatibility criteria:

Display Type: 7-Segment, single character configuration
Common Pin Configuration: Common Anode
Color: Red
Package / Case: 10-DIP (0.600", 15.24mm)
Electrical Parameters: Forward voltage (Vf) and test current within acceptable operating ranges for the application
Physical Form Factor: Digit/Alpha size and overall dimensions compatible with PCB layout constraints

The three substitute parts listed below meet these mandatory requirements. Variations in forward voltage (1.9V to 2.1V), test current (10mA to 20mA), brightness (0.6mcd to 36mcd), and wavelength (635nm to 700nm) reflect different manufacturing technologies and performance characteristics available from active suppliers.

Parameter Comparison

Parameter	LN516RA (Main)	LAP-601VB	LDS-A5644RI	LTS-5301AP
Manufacturer	Panasonic	Rohm Semiconductor	Lumex Opto/Components Inc.	Lite-On Inc.
Display Type	7-Segment, 1 Character	7-Segment, 1 Character	7-Segment, 1 Character	7-Segment, 1 Character
Common Pin	Common Anode	Common Anode	Common Anode	Common Anode
Color	Red	Red	Red	Red
Package / Case	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)
Digit/Alpha Size	0.57" (14.40mm)	0.57" (14.60mm)	0.56" (14.22mm)	0.56" (14.22mm)
Physical Dimensions (H × W × D)	0.748" × 0.484" × 0.315" (19.00mm × 12.30mm × 8.00mm)	0.748" × 0.492" × 0.315" (19.00mm × 12.50mm × 8.00mm)	0.673" × 0.496" × 0.315" (17.10mm × 12.60mm × 8.00mm)	0.673" × 0.488" × 0.315" (17.10mm × 12.40mm × 8.00mm)
Voltage - Forward (Vf) Typical	2.2V	1.9V	2.0V	2.1V
Current - Test	20mA	10mA	10mA	20mA
Millicandela Rating	0.6mcd	36mcd	4.6mcd	0.95mcd
Wavelength - Peak	700nm	650nm	635nm	697nm
Power Dissipation (Max)	60mW	448mW	105mW	40mW
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

LAP-601VB (Rohm Semiconductor): Active product status with ROHS3 compliance. Forward voltage of 1.9V is 0.3V lower than the LN516RA, requiring circuit adjustment. Test current of 10mA is half the original specification. Brightness of 36mcd significantly exceeds the original 0.6mcd, suitable for applications requiring enhanced visibility. Wavelength shift to 650nm represents a shift toward orange-red spectrum.

LDS-A5644RI (Lumex Opto/Components Inc.): Active product status with ROHS3 compliance. Forward voltage of 2.0V closely matches the original 2.2V specification. Test current of 10mA requires circuit adjustment. Physical height reduced to 0.673" compared to original 0.748", which may impact PCB layout compatibility. Brightness of 4.6mcd is moderate. Wavelength of 635nm represents a shift toward orange-red spectrum.

LTS-5301AP (Lite-On Inc.): Active product status with ROHS3 compliance. Forward voltage of 2.1V closely matches the original 2.2V specification. Test current of 20mA matches the original specification exactly. Physical height reduced to 0.673" compared to original 0.748", which may impact PCB layout compatibility. Brightness of 0.95mcd is closest to the original 0.6mcd. Wavelength of 697nm closely matches the original 700nm specification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the LN516RA with any of these substitute parts without circuit modification?

A: Direct replacement depends on circuit design tolerance. The LTS-5301AP requires no electrical parameter adjustment as it matches both forward voltage (2.1V vs. 2.2V) and test current (20mA) specifications. The LAP-601VB and LDS-A5644RI operate at lower test currents (10mA) and may require resistor value recalculation in current-limiting circuits.

Q: What are the physical compatibility considerations?

A: All substitute parts use the same 10-DIP (0.600", 15.24mm) package footprint. However, LAP-601VB maintains the original height of 0.748", while LDS-A5644RI and LTS-5301AP have reduced height of 0.673". Verify PCB layout clearances and mechanical constraints before substitution.

Q: How do brightness differences affect substitution?

A: The LAP-601VB provides 36mcd brightness, significantly higher than the original 0.6mcd. This may cause excessive brightness in applications with fixed resistor values. The LDS-A5644RI (4.6mcd) and LTS-5301AP (0.95mcd) provide moderate brightness levels closer to the original specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant, whereas the original LN516RA is RoHS non-compliant. This is advantageous for new designs and markets with RoHS requirements.

Q: What wavelength differences should I consider?

A: The original LN516RA operates at 700nm (pure red). Substitute parts shift toward orange-red: LAP-601VB at 650nm, LDS-A5644RI at 635nm, and LTS-5301AP at 697nm. Visual color perception may differ slightly; verify acceptability in your application.

Q: Which substitute offers the closest electrical match to the LN516RA?

A: The LTS-5301AP provides the closest match with 2.1V forward voltage (vs. 2.2V original) and 20mA test current (exact match). Wavelength of 697nm also closely matches the original 700nm specification.

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