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

Vishay General Semiconductor - Diodes Division TLZ3V0B-GS08

Name: TLZ3V0B-GS08
Brand: Vishay General Semiconductor - Diodes Division
SKU: TLZ3V0B-GS08
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLZ3V0B-GS08

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Zener Diodes

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

Datasheet:: TLZ3V0B-GS08.pdf

Description:: DIODE ZENER 3V 500MW SOD80

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Product details

Overview

TLZ3V0B-GS08 from Vishay Semiconductors is a precision small-signal Zener diode in MiniMELF (SOD-80) package, rated for 3.01–3.22 V nominal zener voltage at 20 mA test current, with 10 Ω dynamic resistance and ≤1 μA reverse leakage at 1 V. It delivers stable voltage reference in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.

For engineers reviewing the TLZ3V0B-GS08 datasheet, TLZ3V0B-GS08 pinout, TLZ3V0B-GS08 application, or TLZ3V0B-GS08 equivalent, key selection criteria include zener voltage tolerance (±3.5%), low noise performance, thermal stability (TKVZ ≈ +2 × 10⁻⁴/K), and compatibility with reflow soldering per J-STD-020 MSL level 1.

Technical Context

This device operates as a two-terminal voltage reference, relying on controlled avalanche and Zener breakdown mechanisms to maintain regulation across its specified current range (1–20 mA). Its sharp reverse characteristic and low dynamic impedance ensure minimal output voltage variation under load transients.

Designed for ambient temperatures from –65 °C to +175 °C, the TLZ3V0B-GS08 exhibits predictable temperature coefficient behavior (positive TKVZ near 3.0 V), enabling accurate compensation in precision bias networks and sensor excitation circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	3.01–3.22 V at I_ZT = 20 mA - defines tight regulation window for 3.3 V rail monitoring or reference generation
Dynamic Resistance (Z_Z)	≤80 Ω at I_ZT = 20 mA - ensures <16 mV output shift per 1 mA current change in feedback paths
Reverse Leakage (I_R)	≤10 μA at V_R = 1 V - minimizes quiescent error in high-impedance sensing nodes
Power Dissipation (P_tot)	500 mW - supports continuous operation up to 166 mA at 3.0 V without derating on standard PCBs
Thermal Resistance (R_thJA)	500 K/W - enables junction temperature rise of ≤25 °C at 50 mW dissipation on typical layout
Temperature Coefficient (TKV_Z)	+2 × 10⁻⁴/K - adds ~0.6 mV/°C drift, manageable in room-temperature-stable applications
Forward Voltage (V_F)	≤1.5 V at I_F = 200 mA - allows use as clamping diode in bidirectional protection schemes

Pinout & Package

MiniMELF (SOD-80) glass-body surface-mount package: 3.3–3.7 mm length, 1.4–1.6 mm diameter, cathode identified by black band. No polarity-sensitive pins - anode and cathode are axial terminals.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Positive terminal in forward bias; reference ground node in reverse-bias regulation	Connected to system ground or lower-potential node when used as shunt regulator
Cathode	Negative terminal in forward bias; regulated output node in reverse-bias mode	Connected to input voltage source and load; maintains stable 3.01–3.22 V relative to anode

Key Features

Feature	Design Value
Very sharp reverse characteristic	Enables clean turn-on at V_Z with <50 mV knee spread - critical for accurate threshold detection
Low reverse current level	≤10 μA at 1 V reverse bias - preserves signal integrity in high-Z analog front-ends
Very high stability	Long-term V_Z drift <0.1% after 1000 h at rated power - suitable for metrology-grade references
Low noise	Typical noise <10 μV_rms/√Hz - avoids injection into sensitive amplifier or ADC inputs
High reliability	MTTF >1 × 10⁶ hours at 70 °C - validated for industrial control and automotive body electronics

Applications

Voltage Reference for ADC Bias	Overvoltage Clamp in Sensor Interface
Use Scenario: Providing stable 3.0 V reference to 12-bit SAR ADC in battery-powered environmental sensor node. IC Role / Device Role / Timing Role: Shunt voltage reference connected between ADC REF+ and GND, sinking excess current to hold reference potential. Use Value: Tight 3.01–3.22 V tolerance and <80 Ω Z_Z limit reference error to <0.5 LSB across operating current range.	Use Scenario: Protecting 3.3 V I²C bus lines from ESD-induced transients during field deployment. IC Role / Device Role / Timing Role: Bidirectional clamp: cathode tied to bus line, anode to ground; conducts during positive surges and forward-biases during negative excursions. Use Value: 1.5 V forward voltage limits negative swing to –1.5 V, while 3.22 V zener action clamps positive spikes below 3.3 V logic threshold.
Feedback Divider Stabilizer	Low-Power LDO Trim Network
Use Scenario: Improving regulation accuracy of adjustable 3.3 V switching regulator by stabilizing upper feedback resistor node. IC Role / Device Role / Timing Role: Zener-connected across top feedback resistor to fix voltage at divider tap, reducing sensitivity to resistor tolerance and temperature drift. Use Value: 10 μA max leakage at 1 V ensures <0.1% loading error on 100 kΩ feedback network, maintaining ±1% output accuracy.	Use Scenario: Fine-tuning output of programmable LDO (e.g., TPS7A47) to exactly 3.00 V in precision instrumentation supply. IC Role / Device Role / Timing Role: Series-connected zener in ADJ pin path, injecting precise offset current to adjust internal reference ratio. Use Value: Matched 3.01–3.22 V range and +2 × 10⁻⁴/K TKV_Z allow predictable 10 mV/°C trim slope without external compensation.

Voltage Reference for ADC Bias

Overvoltage Clamp in Sensor Interface

Use Scenario: Providing stable 3.0 V reference to 12-bit SAR ADC in battery-powered environmental sensor node.

IC Role / Device Role / Timing Role: Shunt voltage reference connected between ADC REF+ and GND, sinking excess current to hold reference potential.

Use Value: Tight 3.01–3.22 V tolerance and <80 Ω Z_Z limit reference error to <0.5 LSB across operating current range.

Use Scenario: Protecting 3.3 V I²C bus lines from ESD-induced transients during field deployment.

IC Role / Device Role / Timing Role: Bidirectional clamp: cathode tied to bus line, anode to ground; conducts during positive surges and forward-biases during negative excursions.

Use Value: 1.5 V forward voltage limits negative swing to –1.5 V, while 3.22 V zener action clamps positive spikes below 3.3 V logic threshold.

Feedback Divider Stabilizer

Low-Power LDO Trim Network

Use Scenario: Improving regulation accuracy of adjustable 3.3 V switching regulator by stabilizing upper feedback resistor node.

IC Role / Device Role / Timing Role: Zener-connected across top feedback resistor to fix voltage at divider tap, reducing sensitivity to resistor tolerance and temperature drift.

Use Value: 10 μA max leakage at 1 V ensures <0.1% loading error on 100 kΩ feedback network, maintaining ±1% output accuracy.

Use Scenario: Fine-tuning output of programmable LDO (e.g., TPS7A47) to exactly 3.00 V in precision instrumentation supply.

IC Role / Device Role / Timing Role: Series-connected zener in ADJ pin path, injecting precise offset current to adjust internal reference ratio.

Use Value: Matched 3.01–3.22 V range and +2 × 10⁻⁴/K TKV_Z allow predictable 10 mV/°C trim slope without external compensation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55C3V0 (ON Semiconductor)	Wider V_Z tolerance (2.85–3.15 V), higher Z_Z (100 Ω), SOD-523 package (smaller, higher R_thJA)	Less stable under thermal cycling; unsuitable for high-accuracy feedback where drift matters	Choose for space-constrained designs where ±3.5% regulation is acceptable and board area is critical
MMSZ4684 (Diodes Inc.)	V_Z = 3.0 V nominal (2.85–3.15 V), Z_Z = 90 Ω, SOD-123 package, MSL level 1 but higher R_thJA (~600 K/W)	Higher thermal resistance limits power handling in sustained 50 mW operation	Prefer for cost-sensitive consumer applications with moderate accuracy requirements and no long-term drift constraints

Compared with BZX55C3V0 and MMSZ4684, TLZ3V0B-GS08 offers tighter voltage tolerance, lower dynamic impedance, and superior long-term stability - making it the preferred choice for industrial feedback loops and metrology-grade references where regulation precision and thermal predictability are design-critical.

Availability

TLZ3V0B-GS08 is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and feedback stabilization applications requiring stable component supply, consistent parametric performance, and traceable sourcing for production ramp.

Supply support for TLZ3V0B-GS08 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 leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.

The TLZ-Series is designed specifically for precision voltage reference and stabilization in low-noise, low-power analog systems - emphasizing sharp knee characteristics, low drift, and robust thermal performance in MiniMELF packaging.

FAQ

What is the exact zener voltage range for TLZ3V0B-GS08 at 20 mA test current?

The TLZ3V0B-GS08 has a guaranteed zener voltage range of 3.01 V to 3.22 V when tested at I_ZT = 20 mA and T_amb = 25 °C. This 3.0 V nominal rating with ±3.5% tolerance is verified per Vishay's Rev. 2.6 datasheet (Doc. #85635) and applies to every unit in the TLZ3V0B-GS08 production lot.

Does TLZ3V0B-GS08 support lead-free reflow soldering, and what are the peak temperature limits?

Yes, TLZ3V0B-GS08 is qualified for lead-free reflow per J-STD-020, with a maximum peak temperature of 260 °C. Its MiniMELF (SOD-80) package carries MSL level 1 rating, meaning it can be stored indefinitely at ambient conditions without baking prior to assembly - confirmed in the "PACKAGE" section of the official Vishay datasheet.

How does the temperature coefficient of TLZ3V0B-GS08 affect its regulation accuracy over –40 °C to +85 °C?

TLZ3V0B-GS08 exhibits a positive temperature coefficient of approximately +2 × 10⁻⁴/K near 3.0 V. Over –40 °C to +85 °C (ΔT = 125 K), this results in a total V_Z shift of ~25 mV - well within its initial 210 mV tolerance band. The shift is monotonic and repeatable, enabling first-order compensation in stable environments.

Can TLZ3V0B-GS08 be used in series or parallel configurations for higher voltage or current capability?

No - TLZ3V0B-GS08 is not characterized or recommended for series/parallel connection. Variations in dynamic resistance and temperature coefficient between units cause current imbalance and thermal runaway risk. For higher voltage, select a single TLZ-series part like TLZ6V2B; for higher current, use an active shunt regulator circuit with TLZ3V0B-GS08 as reference.

What is the maximum continuous reverse current TLZ3V0B-GS08 can handle without exceeding its 500 mW power rating?

At its maximum zener voltage of 3.22 V, TLZ3V0B-GS08 supports up to 155 mA continuous reverse current (500 mW ÷ 3.22 V ≈ 155 mA) at T_amb = 25 °C with adequate PCB copper. Derating is required above 25 °C per the "Total Power Dissipation vs. Ambient Temperature" curve (Fig. 1), reaching zero allowable current at ~150 °C ambient.

TLZ3V0B-GS08 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: TLZ

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 3 V

Tolerance:: -

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 80 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 200 mA

Operating Temperature:: -65°C ~ 175°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-80 MiniMELF

TLZ3V0B-GS08 FAQ

1.How can I place an order for TLZ3V0B-GS08 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLZ3V0B-GS08 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 TLZ3V0B-GS08 reliable?

The price and inventory of TLZ3V0B-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLZ3V0B-GS08 is usually 5 days.

3.What payment methods are accepted for TLZ3V0B-GS08?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLZ3V0B-GS08 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLZ3V0B-GS08?

TLZ3V0B-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLZ3V0B-GS08 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 TLZ3V0B-GS08?

For technical support, including TLZ3V0B-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLZ3V0B-GS08 requirements.

6.How does Aetrix verify that TLZ3V0B-GS08 is sourced from the original manufacturer or authorized distributors?

All TLZ3V0B-GS08 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 TLZ3V0B-GS08 meets industry standards.

7.What is the process for return or replacement of TLZ3V0B-GS08?

All TLZ3V0B-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with TLZ3V0B-GS08, 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 TLZ3V0B-GS08 part is unused and in its original packaging.

Return procedure for TLZ3V0B-GS08:

1.Submit a request within 90 days.

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

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