Taiwan Semiconductor Corporation BAV101 L0G

Overview

BAV101 L0G from Taiwan Semiconductor is a surface-mount switching diode in MMELF package, rated for 200 mA forward current, 250 V repetitive peak reverse voltage, and 4 A non-repetitive surge current (t = 1 µs). It operates across –65 °C to +200 °C junction temperature range and delivers 1 V forward voltage at 100 mA, serving as a fast-switching rectifier in compact DC/DC converters.

For engineers reviewing the BAV101 L0G datasheet, BAV101 L0G pinout, BAV101 L0G application, or BAV101 L0G equivalent, key selection factors include its hermetically sealed glass construction, low 300 °C/W junction-to-ambient thermal resistance, 4 pF junction capacitance at 0 V, 100 nA reverse leakage at 100 V, and compatibility with J-STD-002 soldering standards.

Technical Context

The BAV101 L0G is a single-die, silicon planar epitaxial switching diode optimized for high-speed turn-off and low forward conduction loss. Its MMELF (DO-213AA) package enables compact placement in space-constrained power stages while maintaining robust thermal performance up to 200 °C junction temperature.

It exhibits 1 V VF at 100 mA with pulse testing (PW = 0.3 ms), 100 nA IR at VR = 100 V (PW = 30 ms), and 4 pF CJ at 1 MHz / 0 V - characteristics supporting efficient operation in high-frequency SMPS and on-board DC/DC conversion where low stored charge and minimal capacitive loading are critical.

Key Specifications

Pinout & Package

MMELF (DO-213AA) hermetically sealed glass package with axial leads; cathode indicated by band. Matte tin-plated leads compliant with J-STD-002 solderability requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar switching diode applications.

Compared with BAV101 L0G, BAV102 L0G trades 50 V reverse rating for marginal cost reduction, while 1N4148W offers broader availability but sacrifices surge capability, thermal robustness, and hermetic sealing - making BAV101 L0G optimal for high-reliability, high-voltage switching in compact power stages.

Availability

BAV101 L0G is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and AC/DC adapters requiring stable component supply, RoHS compliance, and extended temperature operation.

Supply support for BAV101 L0G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, rectifiers, and protection components.

The BAV101 L0G belongs to TSC's BAV101 Series of high-speed switching diodes engineered for efficiency-critical, high-temperature power conversion in industrial and consumer power electronics.

FAQ

What is the maximum junction temperature rating for the BAV101 L0G?

The BAV101 L0G has a maximum junction temperature (TJ MAX) of +200 °C, enabling operation in thermally aggressive environments such as near power inductors or MOSFETs in compact DC/DC converters. This rating is validated per absolute maximum ratings table in the official TSC datasheet E2301 and supports extended reliability under sustained thermal stress. The BAV101 L0G maintains specified electrical parameters within this full range when derated per RθJA = 300 °C/W.

Is the BAV101 L0G RoHS compliant and lead-free?

Yes, the BAV101 L0G is RoHS compliant and features matte tin-plated leads that meet J-STD-002 solderability requirements for lead-free reflow processes. The device contains no restricted substances above threshold limits defined in Directive 2011/65/EU. This compliance is confirmed in the "Features" section of the TSC BAV101 Series datasheet (Version E2301), and applies to all units shipped under ordering code BAV101 L0G.

What does the "L0G" suffix indicate in BAV101 L0G?

The "L0G" suffix in BAV101 L0G denotes Taiwan Semiconductor's standard packaging and marking configuration: MMELF package, tape-and-reel packing (10,000 units per 13-inch reel), and green-compatible marking. It is not a variant identifier for electrical parameters - all BAV101 L0G units share identical electrical specifications, thermal ratings, and mechanical dimensions per datasheet E2301. No functional differentiation exists between BAV101 L0G and other BAV101 variants bearing different suffixes.

How does the junction capacitance of the BAV101 L0G affect high-frequency performance?

The BAV101 L0G exhibits 4 pF junction capacitance (CJ) measured at 1 MHz and 0 V reverse bias, directly limiting its switching speed and high-frequency noise generation. In >1 MHz DC/DC converters, this low capacitance minimizes reverse recovery tail and capacitive feedthrough, improving efficiency and reducing EMI. The value is confirmed in the "Electrical Specifications" table of the TSC BAV101 Series datasheet (E2301), and is significantly lower than general-purpose diodes like 1N4007 (≈8 pF).

Can the BAV101 L0G replace the 1N4148 in high-reliability power applications?

No - while both are switching diodes, the BAV101 L0G is not a direct replacement for the 1N4148 in high-reliability power applications due to fundamental differences: BAV101 L0G is rated for 200 mA continuous and 4 A surge (1 µs), whereas 1N4148 is rated for only 300 mA peak and 2 A surge. Additionally, BAV101 L0G's hermetic glass seal and 200 °C TJ rating provide superior long-term stability in power circuits - a capability the plastic-packaged 1N4148 lacks. Use BAV101 L0G where robustness matters; verify layout compatibility as MMELF differs from DO-35.