Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Taiwan Semiconductor Corporation BZV55C22

Name: BZV55C22
Brand: Taiwan Semiconductor Corporation
SKU: BZV55C22
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BZV55C22

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Zener Diodes

Package:: DO-213AC, MINI-MELF, SOD-80

Datasheet:: BZV55C22.pdf

Description:: DIODE ZENER 22V 500MW MINI MELF

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,570

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BZV55C22 from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 22 V, ±5% tolerance, 500 mW power dissipation, and 5 mA test current; it serves as a precision voltage reference or low-power voltage stabilizer in DC/DC converters and adapter circuits.

For engineers reviewing the BZV55C22 datasheet, BZV55C22 pinout, BZV55C22 application, or BZV55C22 equivalent, key selection criteria include zener voltage accuracy at 5 mA, dynamic impedance of 55 Ω at IZT, leakage current ≤0.1 µA at 16 V reverse bias, and MMELF package compatibility with high-density SMT layouts.

Technical Context

The BZV55C22 operates as a single-die, hermetically sealed glass Zener diode optimized for stable reverse-biased regulation. Its 22 V nominal breakdown voltage is specified under 30 ms pulse test conditions, with guaranteed min/max limits of 20.8 V and 23.3 V at 5 mA.

Thermal performance is defined by a junction-to-ambient thermal resistance of 300 °C/W and maximum junction temperature of +175 °C, enabling reliable operation in ambient temperatures up to +125 °C at full rated power. Forward voltage is 1.0 V at 10 mA forward current.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	20.8–23.3 V at 5 mA test current; enables precise 22 V reference with ±5% tolerance for feedback loops
Zener Impedance (Z_ZT)	55 Ω at I_ZT = 5 mA; ensures stable regulation under small-signal load variations
Power Dissipation (P_D)	500 mW; supports continuous regulation in compact SMT designs without forced cooling
Leakage Current (I_R)	≤0.1 µA at V_R = 16 V; minimizes standby power loss in battery-backed references
Junction Temperature (T_J)	−65 to +175 °C; allows deployment in industrial and automotive under-hood environments
Package	MMELF (DO-213AA); 3.5 mm body length, 1.5 mm diameter, cathode band polarity marking

Pinout & Package

MMELF package: axial leaded, hermetically sealed glass case with matte tin-plated solderable leads per J-STD-002; polarity indicated by cathode band; weight ≈30.6 mg.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-voltage side in reverse-bias regulation	Connected to ground or lower potential node when used as shunt regulator
Cathode	Zener breakdown terminal / high-voltage side in reverse-biased operation	Connected to input rail or feedback node; cathode band marks this terminal physically

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables direct replacement in legacy 22 V reference designs without recalibration
Hermetically sealed glass construction	Prevents moisture ingress and long-term parameter drift in humid environments
RoHS-compliant materials	Meets EU Directive 2011/65/EU for lead-free assembly and environmental compliance
Low leakage current (≤0.1 µA)	Reduces quiescent current in always-on voltage monitor circuits

Applications

DC/DC Converter Feedback Reference	Low-Power Adapter Voltage Clamp
Use Scenario: Used in the feedback divider network of isolated flyback or buck-boost converters to set output voltage. IC Role / Device Role / Timing Role: Provides stable 22 V reference point for optocoupler-based secondary-side regulation. Use Value: Tight 22 V ±5% tolerance ensures output accuracy within ±1.5% across line/load/temperature.	Use Scenario: Placed across secondary-side rectifier output in wall adapters to limit no-load voltage rise. IC Role / Device Role / Timing Role: Acts as shunt clamp to absorb excess energy during light-load conditions. Use Value: 500 mW rating handles transient overvoltage spikes without thermal runaway.
On-Board Power Rail Monitor	Industrial Sensor Excitation Reference
Use Scenario: Monitors 24 V supply rail integrity in PLC I/O modules using comparator threshold detection. IC Role / Device Role / Timing Role: Generates stable 22 V reference for comparator hysteresis or window detection. Use Value: Low 0.1 µA leakage avoids loading sensitive analog monitoring paths.	Use Scenario: Supplies excitation voltage to resistive temperature detectors (RTDs) in process control transmitters. IC Role / Device Role / Timing Role: Delivers low-noise, temperature-stable 22 V bias for 4-wire RTD bridges. Use Value: 175 °C max junction temperature supports operation in high-ambient enclosures.

DC/DC Converter Feedback Reference

Low-Power Adapter Voltage Clamp

Use Scenario: Used in the feedback divider network of isolated flyback or buck-boost converters to set output voltage.

IC Role / Device Role / Timing Role: Provides stable 22 V reference point for optocoupler-based secondary-side regulation.

Use Value: Tight 22 V ±5% tolerance ensures output accuracy within ±1.5% across line/load/temperature.

Use Scenario: Placed across secondary-side rectifier output in wall adapters to limit no-load voltage rise.

IC Role / Device Role / Timing Role: Acts as shunt clamp to absorb excess energy during light-load conditions.

Use Value: 500 mW rating handles transient overvoltage spikes without thermal runaway.

On-Board Power Rail Monitor

Industrial Sensor Excitation Reference

Use Scenario: Monitors 24 V supply rail integrity in PLC I/O modules using comparator threshold detection.

IC Role / Device Role / Timing Role: Generates stable 22 V reference for comparator hysteresis or window detection.

Use Value: Low 0.1 µA leakage avoids loading sensitive analog monitoring paths.

Use Scenario: Supplies excitation voltage to resistive temperature detectors (RTDs) in process control transmitters.

IC Role / Device Role / Timing Role: Delivers low-noise, temperature-stable 22 V bias for 4-wire RTD bridges.

Use Value: 175 °C max junction temperature supports operation in high-ambient enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STMicroelectronics BZX55C22	Same 22 V nominal, ±5%, 500 mW, DO-35 package; higher Z_ZK (600 Ω vs. 220 Ω)	DO-35 has larger footprint and lower thermal efficiency than MMELF	Prefer BZV55C22 for space-constrained SMT layouts requiring better thermal resistance
Vishay NZX22C	22 V ±5%, 500 mW, DO-35; specified leakage ≤0.1 µA at 16 V but no published Z_ZT value	Lacks verified 55 Ω dynamic impedance data at 5 mA; less suitable for precision regulation	Select BZV55C22 when low-impedance regulation stability is required in feedback networks

Compared with BZX55C22 and NZX22C, the BZV55C22 offers identical voltage rating and power handling but delivers lower dynamic impedance (55 Ω) and MMELF packaging for superior thermal performance and board density-critical for modern compact power designs.

Availability

BZV55C22 is available at Aetrix Electronics and suitable for DC/DC converter feedback references, low-power adapter voltage clamps, and on-board power rail monitors requiring stable component supply across industrial, embedded, and consumer electronics programs.

Supply support for BZV55C22 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 was designed specifically for high-reliability, cost-effective Zener regulation in surface-mount power management applications-emphasizing tight voltage tolerance, hermetic sealing, and RoHS compliance.

FAQ

What is the nominal zener voltage and tolerance of the BZV55C22?

The BZV55C22 has a nominal zener voltage of 22 V with a standard tolerance of ±5%, corresponding to a guaranteed range of 20.8 V to 23.3 V when tested at 5 mA (IZT). This tolerance is confirmed in the Electrical Specifications table and applies under pulse test conditions per datasheet note 2.

What is the maximum power dissipation and thermal limit for the BZV55C22?

The BZV55C22 is rated for 500 mW maximum power dissipation at 25 °C ambient, with absolute maximum junction temperature of +175 °C and storage temperature range of −65 to +175 °C. Its junction-to-ambient thermal resistance is 300 °C/W, limiting usable power at elevated ambient temperatures per the derating curve in Figure 1.

Does the BZV55C22 have a specified forward voltage, and what is its value?

Yes-the BZV55C22 has a forward voltage (VF) of 1.0 V when forward biased at 10 mA, as listed in both the KEY PARAMETERS and ABSOLUTE MAXIMUM RATINGS sections. This value is consistent across all variants in the BZV55C2V4–BZV55C75 family.

What package type does the BZV55C22 use, and how is polarity marked?

The BZV55C22 uses the MMELF (DO-213AA) package: a miniature axial glass diode with 3.50 ±0.20 mm body length and Ø1.50 ±0.10 mm diameter. Polarity is marked by a visible cathode band near one end, which identifies the cathode terminal per JEDEC DO-213AA specification.

What is the leakage current specification for the BZV55C22, and at what reverse voltage is it measured?

The BZV55C22 has a maximum leakage current (IR) of 0.1 µA, measured at a reverse voltage (VR) of 16 V. This value is explicitly listed in the Electrical Specifications table under the "IR @ VR" column for part number BZV55C22 and reflects worst-case behavior under steady-state bias conditions.

BZV55C22 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-213AC, MINI-MELF, SOD-80

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 22 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 55 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 16 V

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 10 mA

Operating Temperature:: -65°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Mini MELF

BZV55C22 FAQ

1.How can I place an order for BZV55C22 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZV55C22 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BZV55C22 reliable?

The price and inventory of BZV55C22 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55C22 is usually 5 days.

3.What payment methods are accepted for BZV55C22?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55C22 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZV55C22?

BZV55C22 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZV55C22 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BZV55C22?

For technical support, including BZV55C22 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55C22 requirements.

6.How does Aetrix verify that BZV55C22 is sourced from the original manufacturer or authorized distributors?

All BZV55C22 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZV55C22 meets industry standards.

7.What is the process for return or replacement of BZV55C22?

All BZV55C22 units undergo pre-shipment inspection (PSI). If there is an issue with BZV55C22, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BZV55C22 part is unused and in its original packaging.

Return procedure for BZV55C22:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…