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Vishay General Semiconductor - Diodes Division TLZ3V6A-GS18
- Part No.:
- TLZ3V6A-GS18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
TLZ3V6A-GS18.pdf
- Description:
- DIODE ZENER 3.6V 500MW SOD80
- Quantity:
- Payment:
- Shipping:
Inventory:2,802
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Product details
Overview
TLZ3V6A-GS18 from Vishay Semiconductors is a precision small-signal Zener diode in MiniMELF (SOD-80) package, designed for voltage stabilization and reference applications. It delivers a nominal zener voltage of 3.6 V with ±3.5% tolerance (3.455 V to 3.695 V), specified at 20 mA test current, with dynamic resistance of 60 Ω and reverse leakage current ≤5 μA at 1 V. It operates within -65 °C to +175 °C and supports 500 mW power dissipation on standard PCB.
For engineers reviewing the TLZ3V6A-GS18 datasheet, TLZ3V6A-GS18 pinout, TLZ3V6A-GS18 application, or TLZ3V6A-GS18 equivalent, this device is selected for low-noise, high-stability voltage references in analog sensor signal conditioning, LDO feedback networks, and precision power supply monitoring where tight VZ tolerance and low dynamic impedance are critical.
Technical Context
The TLZ3V6A-GS18 employs a planar-diffused silicon junction optimized for sharp reverse breakdown and minimal voltage drift over temperature. Its zener voltage exhibits a positive temperature coefficient near zero crossing (~3.6 V), minimizing thermal drift in stable reference designs.
It features low noise performance and high reliability under pulsed and DC bias conditions, with MSL level 1 moisture sensitivity and UL 94 V-0 molding compound - enabling use in reflow-soldered industrial and automotive-qualified assemblies without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.455 V to 3.695 V at IZT = 20 mA - ensures tight regulation in 3.3 V system references |
| Dynamic Resistance (ZZ) | 60 Ω max at IZT = 20 mA - maintains low output impedance for stable reference under load variation |
| Reverse Leakage Current (IR) | ≤5 μA at VR = 1 V - minimizes error current in high-impedance feedback paths |
| Power Dissipation (Ptot) | 500 mW at Tamb = 25 °C - supports continuous operation in compact PCB layouts with 50 mm × 50 mm copper area |
| Junction Temperature Range | -65 °C to +175 °C - enables deployment in under-hood automotive and industrial motor control environments |
| Package | MiniMELF (SOD-80) - provides robust mechanical stability and thermal performance vs. SOD-123 or DO-35 |
| Forward Voltage (VF) | 1.5 V max at IF = 200 mA - allows safe forward-bias clamping during transient events |
Pinout & Package
MiniMELF (SOD-80) package: cylindrical glass-body diode with cathode band marking; dimensions 3.7 mm length × 1.6 mm diameter; weight ≈31 mg; UL 94 V-0 compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to circuit ground or lower-potential rail; forms reference return path in shunt regulator topology |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input voltage source via series resistor; supplies stable 3.6 V reference to load or feedback network |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables precise knee detection in overvoltage protection circuits and accurate threshold sensing |
| Low reverse leakage current | Reduces error contribution in high-resistance divider networks used with op-amp references |
| High stability over temperature | Temperature coefficient near zero at 3.6 V minimizes drift in battery-powered instrumentation |
| Low noise performance | Supports clean DC reference generation for 12-bit+ ADCs and precision DACs without added filtering |
| MSL Level 1 rating | Allows direct placement and reflow without pre-baking - simplifies manufacturing for high-reliability boards |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., pressure, load cell) in factory automation systems. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 3.6 V bias to bridge arms and ADC reference input. Use Value: Tight 3.455–3.695 V tolerance and 60 Ω dynamic resistance ensure <±0.5% measurement accuracy across -40 °C to +85 °C ambient. |
Use Scenario: Supplying stable reference to window comparator circuits monitoring 12 V battery health in BCM power management. IC Role / Device Role / Timing Role: Precision zener clamp defining upper/lower thresholds for undervoltage/overvoltage detection. Use Value: Low 5 μA leakage at 1 V prevents false triggering during low-current sleep modes; 175 °C max junction temperature supports under-dash mounting. |
| Medical Portable Device Power Monitoring | Programmable Logic Controller (PLC) Analog Input Module |
Use Scenario: Regulating reference voltage for lithium-ion battery fuel gauge ICs in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-noise shunt reference feeding ADC and coulomb counter in battery management subsystem. Use Value: Low noise and high stability maintain ±0.2% SoC estimation accuracy over full charge cycle and operating temperature range. |
Use Scenario: Providing calibrated 3.6 V reference for 16-bit SAR ADCs digitizing 4–20 mA loop signals in industrial I/O modules. IC Role / Device Role / Timing Role: Primary voltage reference in ratiometric measurement architecture with precision current sense resistor. Use Value: 60 Ω dynamic resistance ensures reference remains stable despite varying ADC input capacitance and sampling transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C3V6 (ON Semiconductor) | Same 3.6 V nominal VZ, but wider tolerance (±5%), higher ZZ (90 Ω), SOD-523 package (0.6 mm × 0.3 mm) | Lower power handling (300 mW), smaller footprint - suitable only for space-constrained low-power IoT nodes | Select TLZ3V6A-GS18 when long-term stability, low noise, or higher power margin (>300 mW) is required |
| MMSZ4685 (Diodes Inc.) | 3.6 V nominal VZ, ±5% tolerance, ZZ = 90 Ω, SOD-123 package, Ptot = 500 mW | Higher leakage (≤10 μA at 1 V) and larger thermal resistance than MiniMELF - less stable under thermal cycling | Choose TLZ3V6A-GS18 for applications demanding tighter VZ tolerance, lower ZZ, or superior thermal performance in harsh environments |
Compared with BZX55C3V6 and MMSZ4685, TLZ3V6A-GS18 offers superior VZ tolerance (±3.5% vs. ±5%), lower dynamic resistance (60 Ω vs. ≥90 Ω), and enhanced thermal robustness due to MiniMELF construction - making it preferred for industrial and automotive reference designs requiring long-term calibration stability.
Availability
TLZ3V6A-GS18 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and medical portable device power monitoring requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for TLZ3V6A-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 and stabilization in space-constrained, thermally demanding applications - emphasizing low noise, sharp breakdown, and long-term parametric stability.
FAQ
What is the exact zener voltage range for TLZ3V6A-GS18 at 20 mA test current?
The TLZ3V6A-GS18 has a guaranteed zener voltage range of 3.455 V to 3.695 V when tested at IZT = 20 mA and Tamb = 25 °C. This ±3.5% tolerance is tighter than standard commercial-grade Zeners and supports high-accuracy reference design in TLZ3V6A-GS18-based circuits.
Does TLZ3V6A-GS18 require derating above 25 °C ambient temperature?
Yes - TLZ3V6A-GS18 must be derated linearly above 25 °C ambient per its thermal curve: maximum power drops to zero at 150 °C ambient when mounted on a standard 50 mm × 50 mm × 1.6 mm PCB. Full 500 mW is only rated at Tamb ≤ 25 °C; at 85 °C, usable power is ~325 mW for TLZ3V6A-GS18.
Can TLZ3V6A-GS18 be used in place of a 3.3 V LDO feedback reference?
Yes - TLZ3V6A-GS18 is commonly used as an external reference for adjustable LDOs (e.g., LM317, TLV707) by connecting its cathode to the LDO's ADJ pin and anode to ground. Its 3.6 V output sets VOUT = 3.6 V × (1 + R1/R2); TLZ3V6A-GS18's low ZZ and leakage ensure minimal regulation error.
Is TLZ3V6A-GS18 compatible with lead-free reflow soldering processes?
Yes - TLZ3V6A-GS18 is qualified for lead-free reflow with peak temperature up to 260 °C (per J-STD-020), and carries MSL Level 1 rating, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking prior to assembly. This applies specifically to TLZ3V6A-GS18 in MiniMELF packaging.
What is the typical temperature coefficient of TLZ3V6A-GS18 near its 3.6 V operating point?
At 3.6 V, TLZ3V6A-GS18 exhibits a near-zero temperature coefficient - approximately ±2 × 10−4/K - as confirmed by Fig. 3 in the Vishay TLZ-Series datasheet. This minimizes voltage drift over temperature, making TLZ3V6A-GS18 ideal for precision references where stability across -40 °C to +125 °C is critical.
TLZ3V6A-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):
- 3.6 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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
TLZ3V6A-GS18 FAQ
1.How can I place an order for TLZ3V6A-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLZ3V6A-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 TLZ3V6A-GS18 reliable?
The price and inventory of TLZ3V6A-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLZ3V6A-GS18 is usually 5 days.
3.What payment methods are accepted for TLZ3V6A-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLZ3V6A-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLZ3V6A-GS18?
TLZ3V6A-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLZ3V6A-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 TLZ3V6A-GS18?
For technical support, including TLZ3V6A-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLZ3V6A-GS18 requirements.
6.How does Aetrix verify that TLZ3V6A-GS18 is sourced from the original manufacturer or authorized distributors?
All TLZ3V6A-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 TLZ3V6A-GS18 meets industry standards.
7.What is the process for return or replacement of TLZ3V6A-GS18?
All TLZ3V6A-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with TLZ3V6A-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 TLZ3V6A-GS18 part is unused and in its original packaging.
Return procedure for TLZ3V6A-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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