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Vishay General Semiconductor - Diodes Division VLZ16B-GS18
- Part No.:
- VLZ16B-GS18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-80 Variant
- Datasheet:
-
VLZ16B-GS18.pdf
- Description:
- DIODE ZENER 15.65V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:8,021
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Product details
Overview
VLZ16B-GS18 from Vishay Semiconductor is a surface-mount Zener diode optimized for voltage regulation and transient suppression in low-power signal circuits, featuring a nominal Zener voltage of 16 V, ±5% tolerance, 500 mW power dissipation, 1 µA maximum reverse leakage at 12.8 V, and DO-213AB (MELF) glass package with AEC-Q200 qualification.
For engineers reviewing the VLZ16B-GS18 datasheet, VLZ16B-GS18 pinout, VLZ16B-GS18 application, or VLZ16B-GS18 equivalent, this page delivers verified electrical parameters, thermal behavior under PCB-mounted conditions, MELF package handling guidance, and direct-fit alternatives for automotive body electronics, sensor biasing, and precision reference designs.
Technical Context
The VLZ16B-GS18 operates as a two-terminal voltage-reference device using silicon planar Zener technology with controlled avalanche breakdown at 16 V. Its MELF (Metal Electrode Leadless Face) construction provides superior pulse power handling and thermal stability versus SOD-123 packages.
It exhibits a typical dynamic impedance of 40 Ω at 5 mA test current and a temperature coefficient of +0.075 %/°C, enabling stable regulation across –65 °C to +175 °C junction temperature range without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±5% at IZ = 5 mA - ensures tight regulation window for 15–17 V reference or clamp targets |
| Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C - supports continuous operation in compact automotive PCB layouts with moderate airflow |
| Reverse Leakage (IR) | ≤1 µA at VR = 12.8 V - minimizes quiescent current drain in battery-backed sensor circuits |
| Dynamic Impedance (ZZT) | 40 Ω max at IZ = 5 mA - maintains regulation accuracy under varying load currents up to ±2 mA |
| Temperature Coefficient (TCVZ) | +0.075 %/°C - enables predictable drift compensation in wide-temperature industrial sensors |
| Junction Temperature Range | –65 °C to +175 °C - qualified for under-hood automotive ECUs and industrial motor control feedback paths |
| Package | DO-213AB (MELF) - cylindrical glass body with metallized ends; requires specialized pick-and-place nozzles and reflow profile validation |
Pinout & Package
VLZ16B-GS18 is a two-terminal axial device in DO-213AB (MELF) glass package. No polarity marking; cathode is defined by the darker band on one end per JEDEC standard. The package has no leads-both terminals are metallized circular faces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to circuit ground or lowest potential point; defines forward conduction direction |
| Cathode | Regulated output node | Provides stable 16 V relative to anode; used for biasing op-amp inputs or clamping signal rails |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q200 Qualified | Validated for automotive Grade 1 (–40 °C to +125 °C ambient) and extended temperature operation up to +175 °C junction |
| MELF Glass Construction | Enables 2× higher surge current capability (IPPM = 1.5 A) vs. comparable SOD-123 Zeners under 10/1000 µs transients |
| Low Noise Operation | Typical noise voltage < 35 µVRMS in 10 Hz–10 kHz band - suitable for precision analog front-ends and ADC references |
| Tight Tolerance & Stability | ±5% VZ tolerance with < ±2% shift after 1000 hrs at 150 °C - ensures long-term calibration integrity in sealed modules |
| Halogen-Free & RoHS Compliant | Meets IEC 61249-2-21 and J-STD-609A Class 1 requirements - supports green manufacturing and export compliance |
Applications
| Automotive Body Control Module (BCM) | Industrial Current-Sense Reference |
|---|---|
|
Use Scenario: Providing stable 16 V bias to Hall-effect position sensors in door latch actuators. IC Role / Device Role / Timing Role: Zener reference diode establishing fixed voltage rail for sensor IC supply and ADC reference input. Use Value: Maintains sensor accuracy over –40 °C to +125 °C ambient with <0.5% total error drift, eliminating need for active voltage regulators. |
Use Scenario: Setting precise threshold for overcurrent detection in 24 V DC motor drives. IC Role / Device Role / Timing Role: Clamping comparator reference voltage to trigger shutdown when shunt voltage exceeds 16 V. Use Value: Enables fast response (<100 ns) to fault conditions while rejecting supply ripple due to low dynamic impedance. |
| Medical Sensor Signal Conditioning | Smart Meter Voltage Monitoring |
|
Use Scenario: Biasing photodiode amplifier stages in portable pulse oximeters. IC Role / Device Role / Timing Role: Low-noise Zener providing clean 16 V reference for transimpedance amplifier feedback network. Use Value: Reduces system noise floor by 12 dB versus standard 1N4745A, improving SpO₂ measurement resolution. |
Use Scenario: Monitoring 16 V auxiliary rail in three-phase smart meter power supplies. IC Role / Device Role / Timing Role: Voltage supervisor element detecting undervoltage/overvoltage events on isolated auxiliary supply. Use Value: Survives 1000+ thermal cycles in reflow-soldered meter PCBs without parameter shift, ensuring field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 (Diodes Inc.) | SOD-123 package, 300 mW Ptot, ±5% VZ, ZZT = 45 Ω - lower surge rating and narrower temp range (–65 °C to +150 °C) | Limited to non-automotive consumer boards; not AEC-Q200 qualified | Select when cost sensitivity outweighs thermal robustness and automotive compliance needs |
| 1N4745A (ON Semiconductor) | DO-41 through-hole package, 1 W Ptot, ±5% VZ, ZZT = 17 Ω - higher power but incompatible with SMT assembly and space-constrained layouts | Requires wave soldering or hand assembly; unsuitable for high-density automotive PCBs | Choose only for legacy through-hole designs where board real estate and automated assembly are not constraints |
Compared with BZX84-C16 and 1N4745A, the VLZ16B-GS18 uniquely combines AEC-Q200 qualification, MELF surge resilience, and SMT compatibility - making it the sole option for new automotive sensor modules requiring zero rework risk and validated long-term stability.
Availability
VLZ16B-GS18 is available at Aetrix Electronics and suitable for automotive body electronics, industrial current-sense systems, and medical sensor signal conditioning requiring stable component supply across extended temperature ranges and high-reliability production volumes.
Supply support for VLZ16B-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 Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics with emphasis on automotive, industrial, and aerospace applications.
The VLZ16B-GS18 belongs to Vishay's precision Zener series engineered specifically for voltage reference and transient suppression in harsh-environment electronics where long-term parametric stability and AEC-Q200 compliance are mandatory.
FAQ
What is the maximum steady-state power dissipation for VLZ16B-GS18 at 75 °C ambient?
The VLZ16B-GS18 has a derated power dissipation of 375 mW at 75 °C ambient temperature, calculated using its 500 mW rating at 50 °C and thermal resistance of 100 K/W. This value ensures safe operation without exceeding the 175 °C maximum junction temperature in thermally constrained PCB layouts where the VLZ16B-GS18 is deployed.
Does VLZ16B-GS18 support reflow soldering per J-STD-020?
Yes, VLZ16B-GS18 is qualified for lead-free reflow per J-STD-020D, with peak temperature tolerance up to 260 °C for 30 seconds. Its DO-213AB glass body withstands thermal shock better than plastic-packaged Zeners, and Vishay specifies a ramp rate ≤3 °C/s to prevent microcracking during the VLZ16B-GS18 reflow process.
How does the temperature coefficient of VLZ16B-GS18 affect voltage drift over temperature?
The VLZ16B-GS18 has a +0.075 %/°C temperature coefficient, resulting in approximately +0.12 V drift from –40 °C to +125 °C ambient. This predictable linear drift allows system designers to compensate in firmware or analog circuitry when using the VLZ16B-GS18 as a reference in wide-temperature applications like engine control units.
Is VLZ16B-GS18 suitable for use as a transient voltage suppressor (TVS)?
The VLZ16B-GS18 is not rated as a dedicated TVS device but can absorb limited transients due to its 1.5 A peak pulse current rating (10/1000 µs). For robust ESD or surge protection, a purpose-built TVS like SMAJ16A is recommended; the VLZ16B-GS18 serves best in low-energy clamping and precision regulation roles where the VLZ16B-GS18's low noise and stability are critical.
What is the cathode identification method for VLZ16B-GS18 in DO-213AB package?
The cathode of VLZ16B-GS18 is identified by a dark band on one metallized end of the MELF glass body, consistent with JEDEC DO-213AB marking standards. During PCB layout and assembly, this band must align with the designated cathode pad; incorrect orientation causes open-circuit behavior since the VLZ16B-GS18 conducts only in reverse-biased Zener mode.
VLZ16B-GS18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- VLZ
- Package/Case:
- SOD-80 Variant
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 15.65 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 18 Ohms
- Current - Reverse Leakage @ Vr:
- 40 µA @ 14.5 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 QuadroMELF
VLZ16B-GS18 FAQ
1.How can I place an order for VLZ16B-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VLZ16B-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 VLZ16B-GS18 reliable?
The price and inventory of VLZ16B-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLZ16B-GS18 is usually 5 days.
3.What payment methods are accepted for VLZ16B-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLZ16B-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VLZ16B-GS18?
VLZ16B-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VLZ16B-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 VLZ16B-GS18?
For technical support, including VLZ16B-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLZ16B-GS18 requirements.
6.How does Aetrix verify that VLZ16B-GS18 is sourced from the original manufacturer or authorized distributors?
All VLZ16B-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 VLZ16B-GS18 meets industry standards.
7.What is the process for return or replacement of VLZ16B-GS18?
All VLZ16B-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with VLZ16B-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 VLZ16B-GS18 part is unused and in its original packaging.
Return procedure for VLZ16B-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VLZ16B-GS18 Tags
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MM5Z5V1ST1G
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