Request Quote
(Ships tomorrow)
Kingbright L53HD LED Red Diffused T-1 3/4 Through Hole - Equivalent & Substitute Parts
Part Overview
The Kingbright L53HD is a red diffused LED indicator in T-1 3/4 (5mm) through-hole package, designed for discrete indication applications. This part operates at 2.25V forward voltage with a 660nm dominant wavelength and 5mcd brightness rating. The L53HD is classified as obsolete product status, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | L53HD |
| Manufacturer | Kingbright |
| Product Status | Obsolete |
| Color | Red |
| Lens Transparency | Diffused |
| Lens Size | 5mm, T-1 3/4 |
| Voltage - Forward (Vf) Typical | 2.25V |
| Current - Test | 10mA |
| Millicandela Rating | 5mcd |
| Wavelength - Dominant | 660nm |
| Wavelength - Peak | 700nm |
| Viewing Angle | 60° |
| Mounting Type | Through Hole |
| Package / Case | Radial |
| Height (Max) | 9.60mm |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the L53HD is determined by the following critical parameters that must align with the original design requirements:
Primary Compatibility Criteria:
- Mounting Type: Through Hole (radial configuration)
- Lens Size: 5mm, T-1 3/4 package form factor
- Color: Red diffused lens
- Lens Transparency: Diffused
- Lens Style: Round with Domed Top
Secondary Electrical Parameters:
- Forward Voltage (Vf): Range 1.9V to 2.25V (acceptable variance for series resistor adjustment)
- Test Current: 10mA to 20mA (design-dependent)
- Wavelength - Dominant: 623nm to 660nm (red spectrum range)
- Viewing Angle: 30° to 60° (application-dependent)
- Millicandela Rating: 1mcd to 1300mcd (brightness selection based on circuit requirements)
Compliance Requirements:
- RoHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
- REACH Unaffected status
Substitute parts are grouped into two categories: MFR Recommended (primary substitutes with highest compatibility) and Similar (alternative options meeting core mechanical and electrical parameters).
Parameter Comparison
| Parameter | L53HD (Original) | WP7113SURDK (MFR Recommended) | 1383SDRD/S530-A3 (Similar) | 333-2SDRD/S530-A3 (Similar) | 5219240F (Similar) | 5219672F (Similar) | HLMP-3301-F00DD (Similar) | HLMP-3351 (Similar) |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Kingbright | Kingbright | Everlight Electronics | Everlight Electronics | Dialight | Dialight | Broadcom Limited | Broadcom Limited |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| Color | Red | Red | Red | Red | Red | Red | Red | Red |
| Lens Transparency | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused |
| Lens Size | 5mm, T-1 3/4 | 5mm, T-1 3/4 | 5.00mm Dia | 5.00mm Dia | 5.00mm Dia | 4.75mm Dia | 5mm, T-1 3/4 | 5mm, T-1 3/4 |
| Voltage - Forward (Vf) Typical | 2.25V | 1.95V | 2V | 2V | — | 2V | 1.9V | 1.9V |
| Current - Test | 10mA | 20mA | 20mA | 20mA | 10mA | 20mA | 10mA | 10mA |
| Millicandela Rating | 5mcd | 1300mcd | 320mcd | 160mcd | 6.3mcd | 60mcd | 5.4mcd | 5.4mcd |
| Wavelength - Dominant | 660nm | 630nm | 639nm | 639nm | — | 623nm | 626nm | 626nm |
| Wavelength - Peak | 700nm | 645nm | 650nm | 650nm | — | 635nm | 635nm | 635nm |
| Viewing Angle | 60° | 30° | 30° | 30° | — | 60° | 60° | 50° |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Height (Max) | 9.60mm | 9.85mm | 8.90mm | 8.90mm | 8.94mm | 8.21mm | 9.19mm | 6.35mm |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | Not Applicable | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
MFR Recommended Substitute: WP7113SURDK (Kingbright)
The WP7113SURDK is the primary recommended substitute for the L53HD. Both components are manufactured by Kingbright, ensuring design continuity and supply chain alignment. The WP7113SURDK is active product status with full RoHS3 compliance and REACH unaffected certification. Physical compatibility is confirmed through identical T-1 3/4 (5mm) package form factor and through-hole radial mounting. The forward voltage differential (1.95V vs. 2.25V) is within acceptable range for series resistor adjustment in standard indicator circuits. The higher millicandela rating (1300mcd vs. 5mcd) provides design flexibility for brightness-critical applications; circuit current limiting must be verified for the 20mA test current specification.
Similar Substitutes - Broadcom Limited HLMP Series
The HLMP-3301-F00DD and HLMP-3351 represent active alternatives from Broadcom Limited with extensive inventory availability (43,381 and 5,267 units respectively). Both maintain T-1 3/4 package compatibility, 1.9V forward voltage, 10mA test current, and 5.4mcd brightness rating closely matching the original L53HD electrical profile. HLMP-3301-F00DD is available in Cut Tape (CT) packaging; HLMP-3351 is supplied in Bulk. The HLMP-3351 features reduced maximum height (6.35mm vs. 9.60mm), suitable for space-constrained PCB layouts. Both components carry full RoHS3 compliance and MSL 1 rating.
Similar Substitutes - Dialight 521 Series
The Dialight 5219672F offers 60mcd brightness with 2V forward voltage and 60° viewing angle, providing closer wavelength alignment (623nm dominant) to the L53HD. This component is active status with 2,314 units in stock. The 5219240F and 5219480F provide lower brightness alternatives (6.3mcd and unspecified respectively) with 10mA test current, suitable for low-intensity indication applications.
Similar Substitutes - Everlight Electronics
The 1383SDRD/S530-A3 and 333-2SDRD/S530-A3 are active Everlight components with 5mm round through-hole packages. Both operate at 2V forward voltage with 20mA test current and 30° viewing angle. The 1383SDRD/S530-A3 provides 320mcd brightness; the 333-2SDRD/S530-A3 provides 160mcd. These components are suitable for applications requiring higher brightness than the original L53HD with compatible mechanical form factor.
Compliance Verification
All recommended and similar substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity for existing designs. Moisture sensitivity level compatibility is confirmed across all alternatives.
Frequently Asked Questions (FAQ)
Q: Can the WP7113SURDK directly replace the L53HD without circuit modification?
A: The WP7113SURDK is mechanically and functionally compatible with the L53HD. The forward voltage difference (1.95V vs. 2.25V) requires verification of series resistor values in the indicator circuit. The higher test current specification (20mA vs. 10mA) must be confirmed against circuit current limiting design. No PCB layout modifications are required due to identical T-1 3/4 package form factor.
Q: What is the primary difference between MFR Recommended and Similar substitute categories?
A: MFR Recommended substitutes (WP7113SURDK) are from the same manufacturer as the original part, providing design continuity and supply chain consistency. Similar substitutes are from alternative manufacturers (Broadcom, Dialight, Everlight) that meet the core mechanical and electrical parameters but may require additional verification for specific application requirements such as brightness, viewing angle, or wavelength specifications.
Q: How does the millicandela rating affect component selection?
A: The millicandela (mcd) rating determines LED brightness output. The L53HD operates at 5mcd. Substitute options range from 1mcd (HLMP-3301-D0001) to 1300mcd (WP7113SURDK). Selection depends on application visibility requirements. Higher brightness substitutes (WP7113SURDK at 1300mcd, 1383SDRD/S530-A3 at 320mcd) are suitable for high-ambient-light environments. Lower brightness alternatives (5219240F at 6.3mcd, HLMP-3301-F00DD at 5.4mcd) maintain similar output to the original for standard indication applications.
Q: Are there viewing angle differences between substitute options?
A: Yes. The L53HD specifies 60° viewing angle. Substitute parts vary: WP7113SURDK and Everlight components specify 30° (narrower beam), while Dialight 5219672F and Broadcom HLMP-3301 series maintain 60° viewing angle. HLMP-3351 specifies 50°. Narrower viewing angles concentrate light intensity; wider angles distribute light across a broader area. Application requirements determine optimal selection.
Q: What is the significance of the T-1 3/4 package designation?
A: T-1 3/4 refers to the through-hole LED package form factor with 5mm lens diameter. This standardized package ensures mechanical compatibility across substitute components. All recommended and similar substitutes maintain this package specification, confirming PCB hole compatibility and mounting consistency without layout redesign.
Q: How do wavelength specifications affect color perception?
A: The L53HD specifies 660nm dominant wavelength (deep red). Substitute parts range from 623nm to 660nm dominant wavelength. Wavelengths below 630nm appear as standard red; wavelengths above 650nm appear as deep red. The WP7113SURDK (630nm) and Dialight 5219672F (623nm) produce slightly different color perception compared to the original 660nm specification. Application requirements for color consistency determine acceptable wavelength variance.
Q: What packaging options are available for substitute parts?
A: Substitute parts are supplied in multiple packaging formats: Bulk (standard quantity packaging), Tape & Reel (TR) for automated assembly, and Cut Tape (CT) for smaller quantities. The WP7113SURDK is supplied in Bulk; Broadcom HLMP-3301 variants are available in TR and CT; Dialight and Everlight components are supplied in Bulk. Packaging selection depends on production volume and assembly process requirements.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All recommended and similar substitute parts listed carry ROHS3 compliance certification, ensuring regulatory alignment with the original L53HD for applications requiring RoHS compliance documentation.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts