SMP2-UWD LED White Diffused 2-PLCC SMD Equivalent & Substitute Parts

Part Overview

The SMP2-UWD is a white diffused LED indicator manufactured by Bivar Inc. in a 2-PLCC surface mount package. This component is designed for discrete LED indication applications with a forward voltage of 3.2V and a brightness rating of 1050mcd at 20mA test current. The SMP2-UWD is classified as obsolete product status, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

SMP2-UWD

Bivar Inc.In Stock: 1141SMP2-UWD Datasheet

Current PartRFQ

SMTL2-UWD

Bivar Inc.In Stock: 6588SMTL2-UWD Datasheet

DirectRFQ

ASMT-UWB1-NX302

Broadcom LimitedIn Stock: 92234ASMT-UWB1-NX302 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMP2-UWD are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Forward Voltage (Vf): 3.2V (exact match required)
• Test Current: 20mA (standard operating condition)
• Viewing Angle: 120° (optical performance specification)
• Mounting Type: Surface Mount (assembly compatibility)
• Package Footprint: 2-PLCC compatible dimensions (3.20mm L x 2.80mm W)
• Lens Transparency: Diffused (optical characteristic)

Allowable Variation Parameters:

• Millicandela Rating: Higher brightness acceptable for direct substitution
• Height (Max): Minor variations within assembly clearance tolerance
• Lens Color: Yellow lens acceptable with white LED for diffused applications
• Packaging Format: Tape & Reel or Cut Tape formats interchangeable for production
• Product Status: Active status preferred for long-term availability

Substitute parts must maintain electrical compatibility (voltage and current) and mechanical fit (package dimensions and mounting type) while potentially offering improved brightness, better availability, or enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

SMTL2-UWD (Direct Substitute - Bivar Inc.):

The SMTL2-UWD is the primary direct substitute for the obsolete SMP2-UWD. Both components are manufactured by Bivar Inc. and share identical electrical specifications (3.2V forward voltage, 20mA test current, 120° viewing angle) and mechanical footprint (3.20mm L x 2.80mm W, 2-PLCC package). The SMTL2-UWD offers increased brightness at 1800mcd compared to the original 1050mcd, providing enhanced visibility without requiring circuit modifications. The SMTL2-UWD is in active production status with 6510 units in stock, ensuring long-term availability. This part is packaged in Tape & Reel format suitable for automated assembly. The SMTL2-UWD is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Height specification increases marginally from 2.00mm to 2.10mm, which remains within standard assembly clearance tolerances.

ASMT-UWB1-NX302 (Similar Substitute - Broadcom Limited):

The ASMT-UWB1-NX302 manufactured by Broadcom Limited is a similar substitute option with identical electrical performance (3.2V forward voltage, 20mA test current, 120° viewing angle) and compatible mechanical dimensions (3.20mm L x 2.80mm W). This component delivers the highest brightness rating at 2300mcd, suitable for applications requiring maximum visibility. The ASMT-UWB1-NX302 features improved moisture sensitivity rating (MSL 3 with 168-hour tolerance versus MSL 4 with 72-hour tolerance), providing superior protection in humid storage and assembly environments. This part is in active production with 92200 units in stock, offering excellent supply chain stability. The ASMT-UWB1-NX302 is ROHS3 compliant and REACH unaffected. Package configuration differs as a 4-SMD with flat lead exposed pad design; however, the footprint remains compatible with 2-PLCC land patterns. The cool white color temperature specification (4500K ~ 8000K) may produce slightly different visual appearance compared to standard white LEDs.

Frequently Asked Questions (FAQ)

Q: Can SMTL2-UWD directly replace SMP2-UWD without circuit modifications?

A: Yes. The SMTL2-UWD maintains identical forward voltage (3.2V), test current (20mA), and viewing angle (120°) specifications. The increased brightness (1800mcd versus 1050mcd) does not require circuit changes. Mechanical footprint and mounting type are identical. Verify PCB assembly clearance for the 0.10mm height increase (2.10mm versus 2.00mm).

Q: What is the difference between SMTL2-UWD and ASMT-UWB1-NX302?

A: Both parts share identical electrical specifications (3.2V, 20mA, 120°) and compatible footprints. SMTL2-UWD is a direct Bivar Inc. product with standard white color. ASMT-UWB1-NX302 is a Broadcom Limited part with cool white color temperature (4500K ~ 8000K) and higher brightness (2300mcd). ASMT-UWB1-NX302 offers superior moisture sensitivity (MSL 3 versus MSL 4). Package configuration differs: SMTL2-UWD is 2-PLCC; ASMT-UWB1-NX302 is 4-SMD with exposed pad.

Q: Are there packaging format differences between these substitutes?

A: Yes. SMP2-UWD original packaging is not specified. SMTL2-UWD is supplied in Tape & Reel (TR) format. ASMT-UWB1-NX302 is supplied in Cut Tape (CT) & Digi-Reel® format. Both formats are compatible with standard pick-and-place assembly equipment. Verify your assembly process compatibility with the specific packaging format.

Q: Which substitute offers the best long-term availability?

A: ASMT-UWB1-NX302 has the highest inventory level (92200 units) and is manufactured by Broadcom Limited, a major semiconductor supplier. SMTL2-UWD has 6510 units in stock from Bivar Inc. Both parts are in active production status, ensuring continued availability. For critical applications requiring maximum supply chain security, ASMT-UWB1-NX302 is recommended.

Q: Do these substitutes meet current environmental compliance standards?

A: Both SMTL2-UWD and ASMT-UWB1-NX302 are ROHS3 compliant and REACH unaffected. The original SMP2-UWD compliance status is not specified. For applications requiring documented environmental compliance, either substitute is acceptable.

Q: What is the impact of the cool white color temperature in ASMT-UWB1-NX302?

A: The ASMT-UWB1-NX302 specifies cool white color temperature (4500K ~ 8000K) versus standard white in SMTL2-UWD. This produces a slightly cooler, more bluish-white appearance. For applications where color consistency with the original SMP2-UWD is critical, SMTL2-UWD is the preferred choice. For general indication applications, the color difference is typically imperceptible to the human eye.

Q: Can I use ASMT-UWB1-NX302 in existing PCB designs without layout modifications?

A: The ASMT-UWB1-NX302 footprint (3.20mm L x 2.80mm W) is compatible with 2-PLCC land patterns. However, the package configuration is 4-SMD with flat lead exposed pad versus 2-PLCC. Verify your PCB land pattern design accommodates the 4-SMD lead configuration. Height increase from 2.00mm to 2.10mm requires clearance verification. Consult the component datasheet for precise lead positioning.