BAS40LP-TP Equivalent & Substitute Parts

Part Overview

The BAS40LP-TP is a Schottky diode rated for 40 V DC reverse voltage with 120 mA average rectified current, packaged in SOD-882 surface mount configuration. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The BAS40LP-TP remains available in inventory (955 pieces), but active alternatives ensure long-term supply chain continuity and design flexibility.

Substiute Parts

BAS40LP-TP

Micro Commercial CoIn Stock: 1046BAS40LP-TP Datasheet

Current PartRFQ

BAS40L2-TP

Micro Commercial CoIn Stock: 1213BAS40L2-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS40LP-TP is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 40 V
• Current - Average Rectified (Io): Must equal or exceed 120 mA
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 1 V @ 40 mA
• Technology: Schottky diode classification
• Speed Classification: Small Signal ≤ 200mA (Io), Any Speed

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The BAS40L2-TP qualifies as a direct substitute based on these parameters. It maintains identical voltage ratings (40 V), exceeds current capacity (200 mA vs. 120 mA), preserves forward voltage characteristics (1 V @ 40 mA), and retains all compliance certifications. Package differences (SOD-882 to DFN1006-2L) represent a mechanical variation that requires PCB layout evaluation but do not affect electrical substitution validity.

Parameter Comparison

Engineering Selection Recommendations

BAS40L2-TP as Primary Substitute:

The BAS40L2-TP is the recommended substitute for the obsolete BAS40LP-TP based on the following factors:

1. Product Status: BAS40L2-TP maintains active status, ensuring long-term availability and supply chain reliability compared to the obsolete BAS40LP-TP.

2. Electrical Performance: The substitute meets or exceeds all critical electrical parameters. The 200 mA current rating provides design margin above the 120 mA requirement. Reverse leakage current is significantly reduced (200 nA vs. 10 µA), indicating improved device quality and lower power dissipation in standby conditions.

3. Compliance Certifications: Both components maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

4. Package Consideration: The transition from SOD-882 to DFN1006-2L (0402 metric) requires PCB layout modification. The DFN1006-2L package is a standard 0402 form factor, widely supported in modern PCB design tools and manufacturing processes.

5. Operating Temperature: The BAS40L2-TP maximum junction temperature of 125°C is lower than the BAS40LP-TP (150°C). Applications operating near or above 125°C require thermal analysis to confirm compatibility.

Selection of BAS40L2-TP is appropriate for applications where the reduced operating temperature maximum does not conflict with circuit thermal requirements and where PCB layout can accommodate the DFN1006-2L package footprint.

Frequently Asked Questions (FAQ)

Q: Can BAS40L2-TP directly replace BAS40LP-TP without circuit modification?

A: Electrical substitution is valid. The BAS40L2-TP meets all electrical requirements of the BAS40LP-TP. However, package differences (SOD-882 to DFN1006-2L) require PCB layout changes. Footprint, trace routing, and thermal management considerations must be evaluated during design transition.

Q: What is the significance of the higher current rating (200 mA) in BAS40L2-TP?

A: The 200 mA rating in BAS40L2-TP exceeds the 120 mA requirement of BAS40LP-TP, providing design margin and reducing thermal stress on the component. This improvement does not create compatibility issues; the circuit will operate within the substitute's rated capacity.

Q: Are there compliance or certification differences between these parts?

A: Both components are ROHS3 compliant with MSL 1 (Unlimited) rating. No compliance barriers exist for substitution. Both carry EAR99 ECCN classification and identical HTSUS codes.

Q: How does the operating temperature difference affect substitution?

A: BAS40LP-TP operates to 150°C junction temperature, while BAS40L2-TP operates to 125°C. Applications with junction temperatures between 125°C and 150°C require thermal analysis. For most standard applications operating below 125°C, this difference is not limiting.

Q: What package considerations apply to the DFN1006-2L footprint?

A: DFN1006-2L is a standard 0402 metric package (1.0 mm × 0.6 mm). It is smaller than SOD-882 and requires updated PCB artwork, solder paste stencil, and pick-and-place programming. Standard manufacturing processes support this package without special handling.

Q: Is reverse leakage current improvement significant?

A: The BAS40L2-TP reverse leakage of 200 nA at 30 V is substantially lower than the BAS40LP-TP at 10 µA at 40 V. This improvement reduces power dissipation in reverse bias conditions and indicates superior device quality, particularly beneficial in low-power or precision applications.

Q: What inventory considerations apply?

A: BAS40LP-TP has 955 pieces in stock but is obsolete. BAS40L2-TP has 1191 pieces in stock and active status. For new production, BAS40L2-TP ensures continued supply availability beyond current inventory depletion.