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

Vishay General Semiconductor - Diodes Division TZMC22-GS18

Name: TZMC22-GS18
Brand: Vishay General Semiconductor - Diodes Division
SKU: TZMC22-GS18
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TZMC22-GS18

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Zener Diodes

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

Datasheet:: TZMC22-GS18.pdf

Description:: DIODE ZENER 22V 500MW SOD80

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,189

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

Product details

Overview

TZMC22-GS18 from Vishay Semiconductors is a 22 V ±5 % tolerance small-signal Zener diode in MiniMELF (SOD-80) package, rated for 500 mW power dissipation and 5 mA test current, used for precision voltage stabilization in low-power analog reference and regulation circuits.

For engineers reviewing the TZMC22-GS18 datasheet, TZMC22-GS18 pinout, TZMC22-GS18 application, or TZMC22-GS18 equivalent, key selection criteria include Zener voltage tolerance (±5 %), dynamic resistance (16 Ω at 5 mA), temperature coefficient (+0.04 to +0.12 %/K), and MiniMELF package compatibility with high-reliability surface-mount layouts.

Technical Context

This device operates as a two-terminal voltage reference with sharp reverse breakdown characteristics and low noise, optimized for stable DC biasing and overvoltage clamping in signal conditioning paths. Its 22 V nominal Zener voltage is specified at 5 mA test current with dynamic resistance of 16 Ω and reverse leakage < 0.1 μA at 95 % V_Zmin.

The TZMC22-GS18 exhibits a positive temperature coefficient (+0.04 to +0.12 %/K), indicating increasing Zener voltage with junction temperature - critical for thermal drift compensation in precision references. It is housed in a UL 94 V-0 compliant MiniMELF glass package with MSL level 1 rating and peak reflow tolerance up to 260 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	20.8 V min., 22 V nom., 23.3 V max. - defines precise clamping threshold for regulation
Test Current (I_ZT)	5 mA - standard operating point for guaranteed V_Z and dynamic resistance specification
Dynamic Resistance (Z_Z)	16 Ω at I_ZT = 5 mA - determines output impedance and load regulation sensitivity
Power Dissipation (P_tot)	500 mW - maximum continuous power handling on PCB with 50 mm × 50 mm × 1.6 mm copper area
Temperature Coefficient (T_KVZ)	+0.04 to +0.12 %/K - quantifies V_Z drift per degree Celsius rise in junction temperature
Reverse Leakage (I_R)	< 0.1 μA at V_R = 20.8 V - ensures minimal quiescent current in high-impedance bias networks
Package	MiniMELF (SOD-80) - cylindrical glass package with cathode indent, 3.3–3.7 mm length, 1.4–1.6 mm diameter

Pinout & Package

MiniMELF (SOD-80) package: hermetically sealed glass cylinder with axial leads; cathode identified by an indented band near one end. No polarity marking on body - orientation determined by cathode indent location during placement.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-impedance path during forward bias	Connected to lower-potential node in Zener regulation; conducts >200 mA at ≤1.5 V forward drop
Cathode	Zener breakdown terminal / reference output node	Connected to regulated voltage rail; maintains 22 V ±5 % under 5 mA reverse bias with 16 Ω dynamic impedance

Key Features

Feature	Design Value
Very sharp reverse characteristic	Enables tight regulation bandwidth and fast transient response in feedback loops
Low reverse current level (< 0.1 μA)	Minimizes loading error in high-impedance voltage divider and reference networks
Very high stability	Guarantees long-term V_Z drift < 1 % after 1000 h at rated power and T_j = 150 °C
Low noise	Reduces broadband voltage noise in precision analog front-ends and sensor excitation circuits
V_Z tolerance ±5 % (TZMC series)	Supports cost-effective designs where tighter tolerance (e.g., ±2 %) is not required

Applications

Reference Voltage Source	Overvoltage Clamp
Use Scenario: Providing stable 22 V reference for ADC voltage reference buffers and op-amp biasing in industrial data acquisition modules. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed potential against which analog signals are measured. Use Value: Delivers 22 V ±5 % with < 16 Ω dynamic impedance, enabling < 0.1 % full-scale error contribution in 16-bit measurement systems.	Use Scenario: Protecting microcontroller I/O pins and analog inputs from ESD-induced transients exceeding 22 V in automotive body control units. IC Role / Device Role / Timing Role: Shunt protection element diverting surge current away from sensitive downstream circuitry. Use Value: Clamps voltage within 23.3 V (max) at 5 mA, limiting stress on protected nodes while maintaining < 0.1 μA leakage during normal operation.
Current Source Bias	Signal Level Translation
Use Scenario: Setting bias current for constant-current LED drivers and photodiode amplifiers in optical sensing applications. IC Role / Device Role / Timing Role: Series-connected Zener establishing fixed voltage drop across current-setting resistor. Use Value: Enables accurate 22 V reference for resistor-based current calculation (I = (V_CC − 22 V)/R), with < 0.12 %/K thermal drift compensation capability.	Use Scenario: Translating 3.3 V logic signals to 22 V interface levels for driving legacy industrial sensors and actuators. IC Role / Device Role / Timing Role: Passive level-shifting node defining upper rail for open-drain or push-pull translator stages. Use Value: Provides stable 22 V rail with low dynamic resistance (16 Ω), minimizing voltage sag during switching transitions and ensuring clean edge integrity.

Reference Voltage Source

Overvoltage Clamp

Use Scenario: Providing stable 22 V reference for ADC voltage reference buffers and op-amp biasing in industrial data acquisition modules.

IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed potential against which analog signals are measured.

Use Value: Delivers 22 V ±5 % with < 16 Ω dynamic impedance, enabling < 0.1 % full-scale error contribution in 16-bit measurement systems.

Use Scenario: Protecting microcontroller I/O pins and analog inputs from ESD-induced transients exceeding 22 V in automotive body control units.

IC Role / Device Role / Timing Role: Shunt protection element diverting surge current away from sensitive downstream circuitry.

Use Value: Clamps voltage within 23.3 V (max) at 5 mA, limiting stress on protected nodes while maintaining < 0.1 μA leakage during normal operation.

Current Source Bias

Signal Level Translation

Use Scenario: Setting bias current for constant-current LED drivers and photodiode amplifiers in optical sensing applications.

IC Role / Device Role / Timing Role: Series-connected Zener establishing fixed voltage drop across current-setting resistor.

Use Value: Enables accurate 22 V reference for resistor-based current calculation (I = (V_CC − 22 V)/R), with < 0.12 %/K thermal drift compensation capability.

Use Scenario: Translating 3.3 V logic signals to 22 V interface levels for driving legacy industrial sensors and actuators.

IC Role / Device Role / Timing Role: Passive level-shifting node defining upper rail for open-drain or push-pull translator stages.

Use Value: Provides stable 22 V rail with low dynamic resistance (16 Ω), minimizing voltage sag during switching transitions and ensuring clean edge integrity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55C22-TR	Same 22 V ±5 % V_Z, but DO-35 package (larger footprint, higher R_thJA = 550 K/W)	Less suitable for space-constrained SMT layouts; higher thermal resistance limits power derating	Select when legacy through-hole compatibility or higher surge robustness is prioritized over miniaturization
MMSZ5247B-TP	SOD-123 package, same 22 V ±5 %, but higher Z_Z = 30 Ω and lower P_tot = 350 mW	Lower power handling and higher dynamic impedance reduce regulation accuracy in precision analog use cases	Select only for cost-sensitive, non-critical biasing where 22 V tolerance and compact size outweigh regulation performance

Compared with BZX55C22-TR and MMSZ5247B-TP, TZMC22-GS18 offers superior thermal performance (R_thJA = 500 K/W), lower dynamic resistance (16 Ω), and MiniMELF reliability - making it optimal for high-stability, surface-mount voltage reference designs requiring long-term drift control and low-noise operation.

Availability

TZMC22-GS18 is available at Aetrix Electronics and suitable for voltage stabilization, overvoltage protection, and precision reference applications requiring stable component supply, consistent parametric performance, and MiniMELF package compatibility.

Supply support for TZMC22-GS18 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

Vishay Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability diodes, MOSFETs, optoelectronics, and resistive solutions for industrial, automotive, and computing markets.

The TZM-Series Zener diodes are designed for precision voltage reference and stabilization in low-power analog circuits, emphasizing sharp breakdown, low noise, and long-term stability in MiniMELF packaging.

FAQ

What is the Zener voltage tolerance for TZMC22-GS18?

The TZMC22-GS18 has a Zener voltage tolerance of ±5 %, meaning its nominal 22 V breakdown voltage falls between 20.8 V and 23.3 V at 5 mA test current. This tolerance is defined per the TZMC series specification and confirmed in the Vishay TZM-Series datasheet revision 1.8. The TZMC22-GS18 maintains this tolerance across its qualified operating temperature range and lifetime stability requirements.

What package type does TZMC22-GS18 use, and what are its key mechanical features?

TZMC22-GS18 uses the MiniMELF (SOD-80) package: a cylindrical glass body measuring 3.3–3.7 mm in length and 1.4–1.6 mm in diameter, with axial leads and cathode identification via a molded indent. It carries UL 94 V-0 flammability rating, MSL level 1 moisture sensitivity, and supports peak reflow temperatures up to 260 °C. The TZMC22-GS18 package enables high-reliability surface-mount assembly with excellent thermal dissipation for its size.

What is the maximum power dissipation rating for TZMC22-GS18, and under what conditions?

The TZMC22-GS18 is rated for 500 mW maximum power dissipation at ambient temperature (T_amb) = 25 °C, assuming mounting on a PCB with 50 mm × 50 mm × 1.6 mm copper area. Its junction-to-ambient thermal resistance (R_thJA) is 500 K/W under those conditions. Derating is required above 25 °C ambient, following the curve in Figure 1 of the Vishay TZM-Series datasheet. The TZMC22-GS18 must not exceed this limit to ensure reliable long-term operation.

How does the temperature coefficient of TZMC22-GS18 affect its voltage stability?

The TZMC22-GS18 has a temperature coefficient (T_KVZ) ranging from +0.04 to +0.12 %/K, meaning its Zener voltage increases with rising junction temperature. At 22 V nominal, this translates to +8.8 to +26.4 mV/°C drift. This positive coefficient must be accounted for in precision reference designs where thermal gradients exist. The TZMC22-GS18's coefficient is verified per the datasheet's electrical characteristics table and applies across its full operating temperature range.

Is TZMC22-GS18 suitable for low-noise analog reference applications?

Yes, TZMC22-GS18 is explicitly characterized for low-noise operation, with features including very sharp reverse breakdown and low noise performance cited in the Vishay TZM-Series datasheet. Its low dynamic resistance (16 Ω) and sub-0.1 μA reverse leakage minimize noise coupling into sensitive analog nodes. When used with proper decoupling and layout, the TZMC22-GS18 delivers stable, low-noise 22 V reference performance suitable for high-resolution ADCs and precision op-amp biasing circuits.

TZMC22-GS18 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: TZM

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:: 1.5 V @ 200 mA

Operating Temperature:: -65°C ~ 175°C

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-80 MiniMELF

TZMC22-GS18 FAQ

1.How can I place an order for TZMC22-GS18 through Aetrix?

Please submit a Request for Quotation (RFQ) for TZMC22-GS18 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 TZMC22-GS18 reliable?

The price and inventory of TZMC22-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZMC22-GS18 is usually 5 days.

3.What payment methods are accepted for TZMC22-GS18?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZMC22-GS18 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TZMC22-GS18?

TZMC22-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TZMC22-GS18 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 TZMC22-GS18?

For technical support, including TZMC22-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZMC22-GS18 requirements.

6.How does Aetrix verify that TZMC22-GS18 is sourced from the original manufacturer or authorized distributors?

All TZMC22-GS18 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 TZMC22-GS18 meets industry standards.

7.What is the process for return or replacement of TZMC22-GS18?

All TZMC22-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with TZMC22-GS18, 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 TZMC22-GS18 part is unused and in its original packaging.

Return procedure for TZMC22-GS18:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

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 …