Taiwan Semiconductor Corporation BZV55B11 L0G

Overview

BZV55B11 L0G from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 11.0 V, ±2% tolerance, 500 mW power dissipation, and 20 Ω dynamic impedance at 5 mA test current, used for precision voltage regulation in low-power DC/DC converters and voltage reference circuits.

For engineers reviewing the BZV55B11 L0G datasheet, BZV55B11 L0G pinout, BZV55B11 L0G application, or BZV55B11 L0G equivalent, key selection criteria include zener voltage accuracy (10.78–11.22 V), low leakage (<0.1 µA at 8.2 V), MMELF package compatibility, and thermal performance (R_θJA = 300 °C/W) in space-constrained board designs.

Technical Context

The BZV55B11 L0G operates as a single-die, hermetically sealed glass Zener diode optimized for stable reverse-bias voltage clamping. It delivers 11.0 V regulation with 20 Ω zener impedance at I_ZT = 5 mA and maintains <0.1 µA leakage current at VR = 8.2 V.

Designed for ambient temperatures from –65 °C to +175 °C, it supports reliable operation in thermally demanding environments. Its MMELF package enables high-density placement while maintaining solderability per J-STD-002 and RoHS compliance.

Key Specifications

Pinout & Package

Package: MMELF (Miniature Metal Electrode Leadless Face), DO-213AA compliant, 3.50 ± 0.20 mm body length, Ø1.50 ± 0.10 mm diameter, matte tin-plated leads. Cathode indicated by band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5240B and BZX55C11, the BZV55B11 L0G offers tighter ±2% voltage tolerance and MMELF surface-mount compatibility-critical for high-density, automated assembly of modern power management subsystems.

Availability

BZV55B11 L0G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for BZV55B11 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 semiconductor manufacturer specializing in discrete power devices, analog ICs, and protection components for industrial and consumer markets.

The BZV55 series belongs to TSC's precision Zener diode product line, engineered specifically for high-stability voltage reference and clamping in compact, thermally constrained surface-mount power systems.

FAQ

What is the exact zener voltage range for BZV55B11 L0G?

The BZV55B11 L0G has a guaranteed zener voltage range of 10.78 V to 11.22 V at I_ZT = 5 mA and T_A = 25 °C, reflecting its ±2% tolerance around the nominal 11.0 V rating. This range is verified per Taiwan Semiconductor's G2301 datasheet revision and applies under pulse-test conditions (30 ms duration).

Is BZV55B11 L0G compatible with lead-free reflow processes?

Yes, the BZV55B11 L0G features matte tin-plated leads compliant with J-STD-002 and rated for standard lead-free reflow profiles (peak temperature ≤ 260 °C). Its hermetically sealed glass construction ensures no internal delamination or parameter shift during thermal cycling.

What is the maximum power dissipation of BZV55B11 L0G and how does it derate with temperature?

The BZV55B11 L0G has a maximum power dissipation of 500 mW at T_A = 25 °C. Derating follows a linear slope of 3.33 mW/°C above 25 °C, based on its R_θJA = 300 °C/W, reaching zero dissipation at T_A = 175 °C - matching its maximum junction temperature rating.

Does BZV55B11 L0G have polarity marking, and how is it identified?

Yes, BZV55B11 L0G uses a cathode band to indicate polarity - a visible dark band near one end of the cylindrical MMELF package. The banded end is the cathode; the opposite end is the anode. This marking aligns with JEDEC DO-213AA standards and is confirmed in TSC's package outline drawing HQ2SD07-MMELFG-044 REV A.

How does the leakage current of BZV55B11 L0G compare to other 11 V Zeners in its class?

The BZV55B11 L0G specifies ≤0.1 µA leakage current at V_R = 8.2 V, which is among the lowest in its 11 V MMELF-class category. This outperforms typical alternatives like BZX55C11 (≤5 µA at 8.2 V) and supports ultra-low-power standby modes in battery-operated systems.