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Vishay General Semiconductor - Diodes Division TLZ9V1-GS18
- Part No.:
- TLZ9V1-GS18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
TLZ9V1-GS18.pdf
- Description:
- DIODE ZENER 9.1V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:6,829
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Product details
Overview
TLZ9V1-GS18 from Vishay Semiconductors is a precision small-signal Zener diode in MiniMELF (SOD-80) package, rated for 9.1 V nominal zener voltage at 20 mA test current, with ±5% tolerance (8.29–8.73 V), 500 mW power dissipation, and ultra-low 0.04 μA reverse leakage at 7.88 V. It delivers stable voltage reference in low-power analog circuits, sensor biasing, and overvoltage protection.
For engineers reviewing the TLZ9V1-GS18 datasheet, TLZ9V1-GS18 pinout, TLZ9V1-GS18 application, or TLZ9V1-GS18 equivalent, this page provides verified electrical parameters, MiniMELF package dimensions, thermal resistance (500 K/W), dynamic impedance (8 Ω), and real-world selection guidance against comparable Zener diodes for voltage regulation and reference design.
Technical Context
The TLZ9V1-GS18 operates as a two-terminal voltage reference device with sharp reverse breakdown characteristic and high stability over temperature. Its zener voltage exhibits a positive temperature coefficient of +8 × 10⁻⁴/K near 9.1 V, enabling predictable drift compensation in precision references.
Designed for surface-mount use on standard PCBs (50 mm × 50 mm × 1.6 mm), it supports peak reflow temperatures up to 260 °C (MSL level 1) and achieves 120 Ω dynamic impedance at knee current (IZT2 = 0.5 mA), ensuring low-noise operation in sensitive analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.29–8.73 V at IZT = 20 mA - defines precise regulation window for 9.1 V nominal reference |
| Power Dissipation (Ptot) | 500 mW - sets maximum continuous DC or pulsed power handling on standard PCB |
| Dynamic Impedance (ZZ) | 8 Ω at IZT = 20 mA - ensures minimal output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.04 μA at VR = 7.88 V - enables ultra-low quiescent current in battery-powered references |
| Junction Temperature (Tj) | 175 °C - allows reliable operation in industrial and automotive under-hood environments |
| Thermal Resistance (RthJA) | 500 K/W - determines junction-to-ambient temperature rise per watt on standard FR-4 board |
| Package | MiniMELF (SOD-80) - cylindrical glass-body package with cathode band, optimized for automated placement and thermal performance |
Pinout & Package
TLZ9V1-GS18 is a two-terminal axial device in MiniMELF (SOD-80) package: one end features a cathode identification band; the opposite end is the anode. No PCB footprint polarity ambiguity - cathode band must align with designated trace.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to higher potential node in zener regulation; defines breakdown direction and polarity-sensitive mounting |
| Anode (unmarked end) | Reference/ground terminal | Typically tied to circuit ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables clean, well-defined breakdown at 9.1 V without soft knee-critical for accurate threshold detection |
| Low reverse leakage current | 0.04 μA at 7.88 V minimizes error in high-impedance reference dividers and extends battery life |
| High stability over time and temperature | ±0.5% typical long-term drift and predictable +8 × 10⁻⁴/K TC support metrology-grade references |
| Low noise performance | Sub-microampere leakage and tight dynamic impedance reduce broadband noise in precision ADC references |
| High reliability (MSL level 1) | Zero moisture sensitivity enables direct reflow without baking-reduces manufacturing overhead and field failure risk |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Device Reference |
|---|---|
Use Scenario: Biasing bridge sensors and scaling op-amp inputs in pressure/temperature transmitters. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 9.1 V excitation and ADC reference rail. Use Value: Tight 8.29–8.73 V tolerance and <8 Ω dynamic impedance maintain <0.1% gain error across 0–70 °C ambient range. |
Use Scenario: Supplying regulated bias to low-power ECG front-end amplifiers and SAR ADCs. IC Role / Device Role / Timing Role: Low-leakage (0.04 μA) voltage reference enabling multi-year battery operation. Use Value: Ultra-low reverse current preserves battery capacity while delivering stable 9.1 V reference for sub-16-bit accuracy. |
| Automotive Body Control Module (BCM) | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Regulating 9.1 V supply for CAN transceiver bias and microcontroller I/O protection clamping. IC Role / Device Role / Timing Role: Dual-role Zener: primary regulator and secondary overvoltage clamp. Use Value: 175 °C junction rating and MSL level 1 compatibility ensure robustness in under-dash environments. |
Use Scenario: Shunting transient surges on 24 V digital input channels before optocoupler isolation. IC Role / Device Role / Timing Role: Fast-response overvoltage protector limiting input to ≤9.1 V during ESD/EFT events. Use Value: Sharp reverse knee and 500 mW surge capability absorb 1 kV/500 W transients without degradation. |
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 |
|---|---|---|---|
| BZX55C9V1 (ON Semiconductor) | Same 9.1 V nominal, but ±5% tolerance (8.65–9.56 V); 500 mW rating; DO-35 package (larger, axial leaded) | Requires through-hole assembly; higher RthJA (~600 K/W) limits power density in compact layouts | Select when legacy through-hole compatibility or higher surge margin is prioritized over SMT automation. |
| MMSZ4687 (Diodes Inc.) | 9.1 V nominal, ±5% (8.65–9.56 V); SOD-123 package; 500 mW; 100 nA leakage at 7.6 V - lower than TLZ9V1-GS18 | Smaller footprint but higher dynamic impedance (15 Ω) and reduced thermal mass affects regulation stability under pulse loads | Prefer for space-constrained designs where ultra-low leakage dominates over dynamic regulation performance. |
Compared with BZX55C9V1 and MMSZ4687, TLZ9V1-GS18 offers tighter actual VZ spread (8.29–8.73 V vs. 8.65–9.56 V), lower dynamic impedance (8 Ω), and superior thermal performance in MiniMELF-making it optimal for high-accuracy, SMT-based voltage references demanding stability and repeatability.
Availability
TLZ9V1-GS18 is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable medical device reference rails, and automotive body control modules requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for TLZ9V1-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 leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for industrial, automotive, and computing markets.
The TLZ-Series is engineered for precision voltage reference applications demanding low noise, sharp breakdown, and long-term stability-targeting analog signal chains, sensor interfaces, and power management subsystems.
FAQ
What is the exact zener voltage range for TLZ9V1-GS18 at 20 mA test current?
The TLZ9V1-GS18 has a guaranteed zener voltage range of 8.29 V to 8.73 V when tested at IZT = 20 mA and Tamb = 25 °C. This 5% tolerance window reflects the "A" grade variant per Vishay's TLZ-Series documentation and is tighter than many industry-standard 9.1 V Zeners, supporting higher-accuracy reference designs without trimming.
Does TLZ9V1-GS18 have a specified temperature coefficient, and how does it affect circuit performance?
Yes, TLZ9V1-GS18 exhibits a temperature coefficient of +8 × 10⁻⁴/K near its operating point, meaning its zener voltage increases by approximately 0.0073 V per °C rise in junction temperature. This predictable positive drift allows designers to compensate for thermal effects in precision references-especially when paired with negative-TC components like silicon diodes or resistors.
What is the maximum reverse leakage current for TLZ9V1-GS18, and at what voltage is it measured?
The maximum reverse leakage current for TLZ9V1-GS18 is 0.04 μA, measured at VR = 7.88 V (90% of nominal VZ). This ultra-low leakage is critical for high-impedance bias networks and battery-powered systems where standby current directly impacts operational lifetime.
Can TLZ9V1-GS18 be used in reflow soldering processes, and what are its moisture sensitivity requirements?
Yes, TLZ9V1-GS18 is qualified for standard Pb-free reflow with a peak temperature of 260 °C and carries MSL level 1 rating per J-STD-020-meaning it has unlimited floor life and requires no pre-baking prior to assembly. Its MiniMELF (SOD-80) package uses UL 94 V-0 molding compound, ensuring process robustness and reliability in high-volume SMT lines.
How does the dynamic impedance of TLZ9V1-GS18 compare to other 9.1 V Zener diodes, and why does it matter?
TLZ9V1-GS18 specifies 8 Ω dynamic impedance at IZT = 20 mA-significantly lower than typical alternatives like MMSZ4687 (15 Ω) or BZX55C9V1 (20 Ω). This lower ZZ translates directly to improved line and load regulation: for example, a 1 mA load change induces only ~8 mV output shift in TLZ9V1-GS18 versus ~15–20 mV in comparables-essential for high-resolution data acquisition systems.
TLZ9V1-GS18 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):
- 9.1 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 8.5 Ohms
- Current - Reverse Leakage @ Vr:
- -
- 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
TLZ9V1-GS18 FAQ
1.How can I place an order for TLZ9V1-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLZ9V1-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 TLZ9V1-GS18 reliable?
The price and inventory of TLZ9V1-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLZ9V1-GS18 is usually 5 days.
3.What payment methods are accepted for TLZ9V1-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLZ9V1-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLZ9V1-GS18?
TLZ9V1-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLZ9V1-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 TLZ9V1-GS18?
For technical support, including TLZ9V1-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLZ9V1-GS18 requirements.
6.How does Aetrix verify that TLZ9V1-GS18 is sourced from the original manufacturer or authorized distributors?
All TLZ9V1-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 TLZ9V1-GS18 meets industry standards.
7.What is the process for return or replacement of TLZ9V1-GS18?
All TLZ9V1-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with TLZ9V1-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 TLZ9V1-GS18 part is unused and in its original packaging.
Return procedure for TLZ9V1-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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