BAS85 L1G Equivalent & Substitute Parts

Part Overview

The BAS85 L1G is a Schottky diode rated for 30 V DC reverse voltage and 200 mA average rectified current, manufactured by Taiwan Semiconductor Corporation in a Mini MELF surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The BAS85 L1G serves applications requiring small-signal rectification with fast switching characteristics. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and supplier options.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA	mV @ mA
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	2	µA @ 30 V
Capacitance @ Vr, F	10	pF @ 1V, 1MHz
Operating Temperature - Junction (Max)	125	°C
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BAS85 L1G are selected based on strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 200 mA
Package / Case: DO-213AC, MINI-MELF, SOD-80
Technology: Schottky
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Acceptable Parameter Variations:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may vary within the specified operating conditions
Current - Reverse Leakage @ Vr: Substitute parts may exhibit lower leakage current
Reverse Recovery Time (trr): Substitute parts must maintain 5 ns specification
Capacitance @ Vr, F: Substitute parts may vary within specified frequency conditions
Operating Temperature - Junction (Max): Substitute parts must support minimum 125°C

Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (functionally identical with different packaging or supplier designation) and Parametric Equivalents (electrically compatible with identical core specifications).

Parameter Comparison

Parameter	BAS85 L1G (Main)	LL42-GS08	BAS85,115	BAS85,135	BAS85-GS08	BAS85-M-18
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Nexperia USA Inc.	Nexperia USA Inc.	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io)	200 mA	200 mA	200 mA	200 mA	200 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA	650 mV @ 50 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA
Reverse Recovery Time (trr)	5 ns	5 ns	—	—	5 ns	—
Current - Reverse Leakage @ Vr	2 µA @ 30 V	500 nA @ 25 V	2.3 µA @ 25 V	2.3 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V
Capacitance @ Vr, F	10 pF @ 1V, 1MHz	7 pF @ 1V, 1MHz	10 pF @ 1V, 1MHz	10 pF @ 1V, 1MHz	10 pF @ 1V, 1MHz	10 pF @ 1V, 1MHz
Operating Temperature - Junction (Max)	125°C	125°C	125°C	125°C	125°C	125°C
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	—	—	—	—	—	Automotive
Qualification	—	—	—	—	—	AEC-Q101

Engineering Selection Recommendations

LL42-GS08 (Vishay General Semiconductor - Diodes Division)

The LL42-GS08 is an active product offering superior reverse leakage performance (500 nA @ 25 V) compared to the BAS85 L1G specification. This part maintains all mandatory electrical parameters and is available in high inventory (5200 pcs). The LL42-GS08 is suitable for applications where lower leakage current provides design margin. ROHS3 compliance and unlimited MSL rating ensure regulatory and manufacturing compatibility.

BAS85,115 (Nexperia USA Inc.)

The BAS85,115 is an active parametric equivalent maintaining identical forward voltage and capacitance specifications to the BAS85 L1G. This part is supplied in Cut Tape & Digi-Reel® packaging with exceptional inventory availability (235,100 pcs), supporting high-volume procurement requirements. ROHS3 compliance and unlimited MSL rating are confirmed. The BAS85,115 is suitable for direct substitution in applications requiring standard commercial-grade components.

BAS85,135 (Nexperia USA Inc.)

The BAS85,135 is an active parametric equivalent with identical electrical specifications to the BAS85 L1G. This part is supplied in Tape & Reel packaging with adequate inventory (4,390 pcs). ROHS3 compliance and unlimited MSL rating are confirmed. The BAS85,135 is suitable for applications requiring tape-and-reel packaging for automated assembly processes.

BAS85-GS08 (Vishay General Semiconductor - Diodes Division)

The BAS85-GS08 is an active parametric equivalent maintaining all core electrical specifications of the BAS85 L1G, including forward voltage, reverse leakage, and capacitance. This part is supplied in Cut Tape & Digi-Reel® packaging with substantial inventory (16,100 pcs). ROHS3 compliance and unlimited MSL rating are confirmed. The BAS85-GS08 is suitable for direct substitution in standard commercial applications.

BAS85-M-18 (Vishay General Semiconductor - Diodes Division)

The BAS85-M-18 is an active parametric equivalent with automotive-grade qualification (AEC-Q101) and identical electrical specifications to the BAS85 L1G. This part is supplied in Tape & Reel packaging with limited inventory (1,156 pcs). ROHS3 compliance and unlimited MSL rating are confirmed. The BAS85-M-18 is suitable for applications requiring automotive-grade components or enhanced reliability assurance.

Frequently Asked Questions (FAQ)

Q: Can the LL42-GS08 be used as a direct replacement for the BAS85 L1G?

A: The LL42-GS08 meets all mandatory electrical and mechanical parameters for substitution. The lower reverse leakage current (500 nA @ 25 V versus 2 µA @ 30 V) represents improved performance and does not create compatibility issues. The LL42-GS08 is electrically compatible for direct substitution in the same circuit application.

Q: What is the difference between BAS85,115 and BAS85,135?

A: Both parts are parametric equivalents manufactured by Nexperia USA Inc. with identical electrical specifications. The primary difference is packaging: BAS85,115 is supplied in Cut Tape & Digi-Reel® format, while BAS85,135 is supplied in Tape & Reel format. Selection depends on assembly process requirements and inventory availability.

Q: Is the BAS85-M-18 suitable for non-automotive applications?

A: The BAS85-M-18 is qualified to AEC-Q101 automotive standards and maintains identical electrical specifications to the BAS85 L1G. The automotive qualification does not restrict use in non-automotive applications. The BAS85-M-18 is suitable for any application requiring the specified electrical parameters.

Q: Why does the LL42-GS08 have different forward voltage test conditions than other substitutes?

A: The LL42-GS08 forward voltage is specified at 650 mV @ 50 mA, while the BAS85 L1G and other substitutes are specified at 800 mV @ 100 mA. These represent different measurement conditions at different current levels. Both specifications are valid for the respective parts and do not prevent substitution. Circuit design must account for the actual forward voltage at the operating current of the application.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The BAS85 L1G is also ROHS3 compliant. Regulatory compliance is maintained across all substitution options.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: Moisture Sensitivity Level 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly. All listed parts, including the BAS85 L1G, carry this rating.

Q: Can substitute parts be mixed in the same assembly?

A: All substitute parts meet identical electrical specifications for the core parameters (voltage, current, package, technology). Mixing substitute parts in the same assembly is permissible from an electrical compatibility standpoint. Manufacturing and procurement processes should establish consistent part selection to maintain traceability and supply chain management.

Q: Which substitute part offers the best inventory availability?

A: The BAS85,115 (Nexperia USA Inc.) offers the highest inventory availability at 235,100 pcs. This part is suitable for high-volume production requirements and provides supply chain security.

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