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Vishay General Semiconductor - Diodes Division TLZ3V3B-GS08
- Part No.:
- TLZ3V3B-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
TLZ3V3B-GS08.pdf
- Description:
- DIODE ZENER 3.3V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:6,836
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Product details
Overview
TLZ3V3B-GS08 from Vishay Semiconductors is a precision small-signal Zener diode designed for voltage regulation and reference applications, featuring a nominal Zener voltage of 3.32–3.53 V at 20 mA test current, dynamic resistance of 70 Ω max, reverse leakage current ≤10 μA at 1 V, and power dissipation up to 500 mW in MiniMELF (SOD-80) package. It delivers high stability and low noise in compact power management circuits.
For engineers reviewing the TLZ3V3B-GS08 datasheet, TLZ3V3B-GS08 pinout, TLZ3V3B-GS08 application, or TLZ3V3B-GS08 equivalent, key selection criteria include its tight 3.32–3.53 V Zener tolerance, 70 Ω dynamic impedance, MSL Level 1 moisture sensitivity, and compatibility with reflow soldering up to 260 °C peak temperature.
Technical Context
This Zener diode operates in reverse breakdown mode with sharp knee characteristics and low noise, optimized for stable DC voltage reference generation. Its thermal resistance (RthJA) is 500 K/W on standard PCBs, and junction temperature is rated to 175 °C.
The device exhibits a negative temperature coefficient near 3.3 V (≈−2 × 10−4/K), enabling predictable drift compensation in analog references. It is specified for pulse and continuous operation with IZ = Ptot/VZ, supporting reliable regulation across industrial ambient temperatures (−65 to +175 °C storage).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 3.32–3.53 V at IZT = 20 mA - defines precise regulation point for low-voltage reference circuits |
| Dynamic resistance (ZZ) | ≤70 Ω at IZT = 20 mA - ensures minimal output voltage variation under load transients |
| Reverse leakage current (IR) | ≤10 μA at VR = 1 V - guarantees low standby power loss in battery-sensitive designs |
| Power dissipation (Ptot) | 500 mW - supports continuous operation without heatsinking on standard FR-4 PCBs |
| Package | MiniMELF (SOD-80) - surface-mount cylindrical package with 3.3–3.7 mm length, enabling high-density layout |
| Moisture sensitivity | MSL Level 1 per J-STD-020 - allows unlimited floor life and standard reflow without baking |
| Junction temperature | 175 °C maximum - enables use in high-temperature industrial and automotive under-hood environments |
Pinout & Package
MiniMELF (SOD-80) package: cylindrical glass-body surface-mount device with cathode identified by a dark band; total length 3.3–3.7 mm, diameter 1.4–1.6 mm, weight ≈31 mg. UL 94 V-0 compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in Zener configuration | Connected to lower potential node; carries forward current up to 200 mA (VF ≤ 1.5 V) |
| Cathode | Reverse breakdown terminal / regulated output node | Provides stable 3.32–3.53 V reference when biased in reverse; marked with dark band |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables clean voltage clamping with minimal knee voltage spread (<0.21 V range at 20 mA) |
| Low reverse leakage current | ≤10 μA at 1 V reverse bias reduces quiescent current in always-on reference circuits |
| High stability over temperature | Specified ΔVZ/°C ≈ −2 × 10−4/K supports predictable drift compensation in analog systems |
| Low noise performance | Minimizes voltage ripple in precision ADC references and sensor excitation circuits |
| High reliability & low failure rate | Qualified per AEC-Q200 stress tests; suitable for long-life industrial control and instrumentation |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Voltage Reference |
|---|---|
Use Scenario: Providing stable bias voltage for bridge-based pressure/temperature sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Zener reference source for op-amp gain-setting and ADC reference divider networks. Use Value: Tight 3.32–3.53 V tolerance and 70 Ω dynamic resistance ensure <±0.5% reference accuracy over 0–70 °C ambient. | Use Scenario: Supplying accurate 3.3 V reference to 12-bit SAR ADCs in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage reference replacing higher-cost shunt regulators. Use Value: ≤10 μA reverse leakage extends battery life; low noise preserves effective number of bits (ENOB) in ADC conversion. |
| Automotive Body Control Module (BCM) Power Supervision | Medical Instrumentation Analog Front-End Calibration |
Use Scenario: Monitoring 5 V rail integrity via resistive divider into microcontroller comparator in BCMs. IC Role / Device Role / Timing Role: Precision clamp/reference for undervoltage detection circuitry. Use Value: 175 °C junction rating and MSL Level 1 enable direct placement near hot engine-control components without derating. | Use Scenario: Calibrating gain/offset in ECG amplifier stages requiring sub-millivolt reference stability. IC Role / Device Role / Timing Role: Primary voltage reference for programmable gain instrumentation amplifiers. Use Value: Very sharp reverse knee and low noise reduce measurement uncertainty in high-resolution biomedical signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C3V3-TR | Higher dynamic resistance (100 Ω max), wider VZ tolerance (3.14–3.47 V), DO-35 package (larger footprint) | Less suitable for space-constrained PCBs; higher impedance limits transient response in fast-switching supplies | Prefer TLZ3V3B-GS08 where board area, low ZZ, and tighter VZ tolerance are critical |
| MMSZ4685-TP | SOD-123 package (rectangular), same VZ range but higher leakage (≤50 μA), no MSL Level 1 rating | Requires baking before reflow; less stable in high-reliability medical/industrial settings | Choose TLZ3V3B-GS08 for MSL Level 1 handling, lower leakage, and superior long-term stability |
Compared with BZX55C3V3-TR and MMSZ4685-TP, TLZ3V3B-GS08 offers the lowest dynamic impedance (70 Ω), tightest VZ range (3.32–3.53 V), and highest reliability grade (MSL Level 1, 175 °C Tj), making it optimal for precision, high-density, and thermally demanding applications.
Availability
TLZ3V3B-GS08 is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference, and automotive power supervision requiring stable component supply, consistent parametric performance, and long-term lifecycle continuity.
Supply support for TLZ3V3B-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 engineered for precision voltage reference and stabilization in space-constrained, high-stability analog circuits - emphasizing low noise, sharp knee characteristics, and robust thermal performance in MiniMELF packaging.
FAQ
What is the exact Zener voltage range for TLZ3V3B-GS08 at 20 mA test current?
The TLZ3V3B-GS08 has a guaranteed Zener voltage range of 3.32 V minimum to 3.53 V maximum when tested at IZT = 20 mA and Tamb = 25 °C. This tight 0.21 V span reflects its Grade B tolerance within the TLZ-Series family and supports high-accuracy reference design without post-calibration trimming.
Does TLZ3V3B-GS08 require special handling for moisture sensitivity?
No - TLZ3V3B-GS08 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can undergo standard lead-free reflow (peak 260 °C) without pre-baking. This simplifies manufacturing logistics and eliminates moisture-related defects such as popcorning during assembly.
Can TLZ3V3B-GS08 be used in automotive under-hood applications?
Yes - TLZ3V3B-GS08 supports storage from −65 °C to +175 °C and operates with junction temperature up to 175 °C. Its MiniMELF package and Vishay's AEC-Q200-qualified process make it suitable for non-safety-critical under-hood functions like body control module voltage monitoring and sensor biasing.
How does the dynamic resistance of TLZ3V3B-GS08 affect its regulation performance?
With dynamic resistance ≤70 Ω at 20 mA, TLZ3V3B-GS08 maintains minimal output voltage deviation under varying load currents - for example, a 1 mA change in Zener current causes only ~70 mV shift in VZ. This low ZZ ensures stable reference behavior in precision analog circuits where supply ripple rejection matters.
Is TLZ3V3B-GS08 compatible with automated optical inspection (AOI) systems?
Yes - the MiniMELF (SOD-80) package features a distinct cathode band and consistent cylindrical geometry, enabling reliable detection by standard AOI systems. Its marking code "3B3" is laser-etched for high contrast, supporting traceability and defect detection during post-SMT inspection.
TLZ3V3B-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):
- 3.3 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 70 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
TLZ3V3B-GS08 FAQ
1.How can I place an order for TLZ3V3B-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLZ3V3B-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 TLZ3V3B-GS08 reliable?
The price and inventory of TLZ3V3B-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLZ3V3B-GS08 is usually 5 days.
3.What payment methods are accepted for TLZ3V3B-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLZ3V3B-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLZ3V3B-GS08?
TLZ3V3B-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLZ3V3B-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 TLZ3V3B-GS08?
For technical support, including TLZ3V3B-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLZ3V3B-GS08 requirements.
6.How does Aetrix verify that TLZ3V3B-GS08 is sourced from the original manufacturer or authorized distributors?
All TLZ3V3B-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 TLZ3V3B-GS08 meets industry standards.
7.What is the process for return or replacement of TLZ3V3B-GS08?
All TLZ3V3B-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with TLZ3V3B-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 TLZ3V3B-GS08 part is unused and in its original packaging.
Return procedure for TLZ3V3B-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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