HDSP-311G Equivalent & Substitute Parts

Part Overview

The HDSP-311G is a 0.4-inch single-character green 7-segment LED display module manufactured by Broadcom Limited in a 14-DIP package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The display operates as a common anode device with a typical forward voltage of 2.06V and test current of 10mA, suitable for numeric and alphanumeric display applications requiring compact form factors.

Substiute Parts

HDSP-311G

Broadcom LimitedIn Stock: 1104HDSP-311G Datasheet

Current PartRFQ

LTS-4510AG

Lite-On Inc.In Stock: 2426LTS-4510AG Datasheet

MFR RecommendedRFQ

SA04-11GWA

KingbrightIn Stock: 2385SA04-11GWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HDSP-311G are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Compatibility Criteria:

• Display type: 7-Segment LED
• Character configuration: Single character (1)
• Digit size: 0.40" (10.16mm)
• Color: Green
• Common pin configuration: Common Anode
• Package type: 14-DIP with matching lead count and pitch
• Physical dimensions: Height and width within tolerance; depth variation acceptable within mechanical constraints
• Wavelength range: 565nm–568nm (green spectrum)

Electrical Operating Range:

• Forward voltage (Vf): 2.06V–2.2V (typical)
• Test current: 10mA–20mA
• Millicandela rating: 2.2mcd–8.6mcd
• Power dissipation: 62.5mW–75mW

The two substitute parts listed—LTS-4510AG (Lite-On Inc.) and SA04-11GWA (Kingbright)—meet all primary compatibility criteria. Both are active products with current manufacturing status, ensuring long-term availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

LTS-4510AG (Lite-On Inc.) is suitable for applications where the original HDSP-311G specifications are the baseline requirement. This substitute maintains mechanical compatibility and operates within the specified electrical envelope. The LTS-4510AG carries ROHS3 compliance, supporting modern regulatory requirements. The slightly elevated forward voltage (2.1V vs. 2.06V) and increased test current (20mA vs. 10mA) require verification that existing current-limiting resistor networks accommodate the higher operating point without exceeding maximum power dissipation limits.

SA04-11GWA (Kingbright) offers enhanced brightness performance with an 8.6mcd rating compared to the original 3.2mcd specification. This substitute is also ROHS3 compliant and maintains REACH Unaffected status, matching the original part's regulatory profile. The forward voltage of 2.2V and test current of 20mA represent the upper operating range; circuit design must confirm that drive circuitry can supply the required current and that power dissipation remains within acceptable limits. The slightly reduced package pitch (0.295" vs. 0.300") is within standard DIP tolerance and does not affect PCB footprint compatibility.

Both substitute parts are active products with established supply chains, providing long-term availability advantages over the obsolete HDSP-311G.

Frequently Asked Questions (FAQ)

Q: Can the LTS-4510AG and SA04-11GWA be used interchangeably with the HDSP-311G?

A: Both parts are mechanically and functionally compatible as direct substitutes. All three devices share identical display type (7-segment), character count (1), digit size (0.40"), color (green), common anode configuration, and 14-DIP package format. Electrical parameters fall within compatible operating ranges. Selection between the two substitutes depends on brightness requirements and circuit design constraints.

Q: What are the key electrical differences between the substitute parts?

A: The LTS-4510AG operates at 2.1V typical forward voltage with 20mA test current and 2.2mcd brightness. The SA04-11GWA operates at 2.2V typical forward voltage with 20mA test current and 8.6mcd brightness. Both exceed the original HDSP-311G brightness (3.2mcd), with the SA04-11GWA providing significantly higher luminous intensity. Current-limiting resistor values in the drive circuit may require adjustment to accommodate the higher test current specification.

Q: Are there package dimension concerns when substituting these parts?

A: Physical dimensions are nearly identical across all three parts. The SA04-11GWA package pitch is 0.295" compared to 0.300" for the HDSP-311G and LTS-4510AG; this 0.005" difference is within standard DIP tolerance and does not affect PCB footprint compatibility. Depth variations (0.201" to 0.200") are negligible for standard PCB assembly.

Q: What compliance certifications should be considered?

A: The LTS-4510AG and SA04-11GWA are both ROHS3 compliant, supporting modern environmental regulations. The SA04-11GWA maintains REACH Unaffected status, identical to the original HDSP-311G. The LTS-4510AG is REACH Affected, which may require additional documentation in regulated supply chains. All three parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special handling requirements.

Q: Which substitute part should be selected for new designs?

A: Selection depends on application requirements. For applications requiring brightness levels comparable to or exceeding the original specification, the SA04-11GWA is preferred due to its 8.6mcd rating and REACH Unaffected status. For applications with tighter power budgets or lower brightness requirements, the LTS-4510AG provides a conservative electrical profile. Both are active products with established supply availability.