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Diodes Incorporated SMAZ6V8-13-F
- Part No.:
- SMAZ6V8-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAZ6V8-13-F.pdf
- Description:
- DIODE ZENER 6.8V 1W SMA
- Quantity:
- Payment:
- Shipping:
Inventory:32,858
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Product details
Overview
SMAZ6V8-13-F from Diodes Incorporated is a 1.0W surface-mount Zener diode with nominal zener voltage 6.8V (±5%), maximum zener impedance 200Ω at 2mA test current, and reverse leakage current ≤1.0µA at 4.0V. It features SMA package, RoHS-compliant matte tin plating, and is used for voltage regulation and overvoltage protection in DC power rails of industrial control modules.
For engineers reviewing the SMAZ6V8-13-F datasheet, SMAZ6V8-13-F pinout, SMAZ6V8-13-F application, or SMAZ6V8-13-F equivalent, key selection criteria include zener voltage tolerance, power derating above +50°C, thermal resistance (RθJA = 100°C/W), and compliance with halogen/antimony-free "Green" requirements.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 6.8V nominal regulation is specified at IZT = 2mA with ZZT ≤ 200Ω and ZZK ≤ 200Ω at IZK = 1mA.
Designed for surface-mount assembly on FR-4 PCBs with defined pad layout, it delivers 1.0W power dissipation at TA = +25°C, derating linearly at 10mW/°C above +50°C, and supports operating junction temperatures from –65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 6.8 V - precise regulation point for low-voltage reference circuits |
| Zener Voltage Tolerance | ±5% - ensures VZ remains within 6.46–7.14 V at 25°C |
| Power Dissipation | 1.0 W - supports sustained regulation in compact SMT layouts |
| Zener Impedance | ≤200 Ω @ 2 mA - limits output voltage variation under dynamic load changes |
| Reverse Leakage Current | ≤1.0 µA @ 4.0 V - minimizes quiescent power loss in standby mode |
| Thermal Resistance (J-A) | 100 °C/W - defines temperature rise per watt on standard FR-4 board |
| Operating Temperature | –65°C to +150°C - enables use in extended industrial environments |
Pinout & Package
Package: SMA (Surface Mount Assembly), molded plastic case with UL 94V-0 flammability rating, cathode identified by band or notch, weight ≈0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal | Connected to higher-potential side; voltage referenced to this node during regulation |
Key Features
| Feature | Design Value |
|---|---|
| 1.0W Power Rating | Enables robust voltage clamping in 5–12V rail protection without external heatsinking |
| ±5% VZ Tolerance | Reduces need for post-assembly calibration in precision reference designs |
| RoHS & Halogen-Free Compliance | Meets IPC-1752A material declaration requirements for green manufacturing |
| SMA Package with Level 1 MSL | Supports standard reflow profiles without moisture-related popcorning |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Power Supervision |
|---|---|
Use Scenario: Stabilizing 5V reference for analog front-end of temperature/humidity sensors in factory automation nodes. IC Role / Device Role / Timing Role: Zener voltage reference providing stable bias for op-amp input stages and ADC reference dividers. Use Value: Maintains <±1% reference drift across –40°C to +85°C ambient due to low RθJA and tight VZ tolerance. | Use Scenario: Overvoltage clamp on 12V supply rail feeding microcontroller and CAN transceiver in BCM. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting rail excursions during load dump events. Use Value: Absorbs up to 1.0W surge energy while holding rail below 7.5V, preventing latch-up in downstream ICs. |
| Programmable Logic Controller (PLC) Input Protection | Medical Diagnostic Equipment Power Sequencing |
Use Scenario: Protecting 24V digital input channels from ESD and field-wiring transients. IC Role / Device Role / Timing Role: Primary shunt regulator clamping induced surges before they reach optocoupler inputs. Use Value: Withstands repeated 1kV/500Ω contact discharge per IEC 61000-4-2 Level 4 due to low ZZT and fast response. | Use Scenario: Generating clean 6.8V auxiliary bias for isolated power monitor ICs during multi-rail startup sequencing. IC Role / Device Role / Timing Role: Precision voltage reference enabling accurate threshold detection of 5V/3.3V rail readiness. Use Value: Delivers <10ppm/°C effective TC via matched thermal path and low IR, ensuring sequencing timing integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8,115 | 0.3W rating, SOT-23 package, VZ = 6.8V ±5%, RθJA = 300°C/W | Limited to low-power signal-level regulation; unsuitable for >150mW continuous dissipation | Select when board space is constrained and power demand is <150mW |
| 1N4735A | 1.0W through-hole DO-41 package, VZ = 6.8V ±5%, no halogen-free certification | Requires wave soldering; incompatible with automated SMT lines and green compliance mandates | Select only for legacy through-hole designs where RoHS/Green is not required |
Compared with BZX84-C6V8,115 and 1N4735A, SMAZ6V8-13-F uniquely balances 1.0W SMT capability, full RoHS/halogen-free compliance, and industry-standard thermal performance-making it optimal for new industrial and automotive PCB designs requiring regulatory alignment and power scalability.
Availability
SMAZ6V8-13-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and programmable logic controller input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMAZ6V8-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and automotive markets with high-reliability components.
The SMAZ series belongs to Diodes' standard Zener diode product line, engineered specifically for high-volume, automated SMT applications demanding consistent regulation, thermal stability, and environmental compliance in harsh operating environments.
FAQ
What is the maximum continuous zener current (IZM) for SMAZ6V8-13-F?
The maximum zener current IZM is calculated as PD/VZ = 1.0W / 6.8V ≈ 147mA at 25°C. This value decreases linearly with ambient temperature above +50°C at 10mW/°C, reaching ~100mA at +100°C ambient on standard FR-4 PCB layout.
Does SMAZ6V8-13-F have a specified zener knee impedance (ZZK)?
Yes, the datasheet specifies ZZK ≤ 200Ω at IZK = 1mA. This low knee impedance ensures stable regulation onset and minimal voltage hysteresis during low-current operation, critical for precision reference and low-power wake-up circuits.
Can SMAZ6V8-13-F be used in place of a 6.8V Zener in a linear regulator feedback network?
Yes, its ±5% VZ tolerance, low ZZT (≤200Ω), and stable TC behavior make it suitable for feedback references in adjustable LDOs and switching regulator error amplifiers-provided power dissipation remains within 1.0W and thermal design accounts for RθJA = 100°C/W.
Is the cathode marking on SMAZ6V8-13-F indicated by a band or notch?
The cathode is marked by either a band or a notch on the SMA package body, per Diodes Incorporated mechanical specification. Visual inspection under magnification confirms the cathode terminal, which must connect to the higher-potential side in reverse-bias regulation configuration.
SMAZ6V8-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAZ6V8-13-F FAQ
1.How can I place an order for SMAZ6V8-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAZ6V8-13-F 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 SMAZ6V8-13-F reliable?
The price and inventory of SMAZ6V8-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAZ6V8-13-F is usually 5 days.
3.What payment methods are accepted for SMAZ6V8-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAZ6V8-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAZ6V8-13-F?
SMAZ6V8-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAZ6V8-13-F 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 SMAZ6V8-13-F?
For technical support, including SMAZ6V8-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAZ6V8-13-F requirements.
6.How does Aetrix verify that SMAZ6V8-13-F is sourced from the original manufacturer or authorized distributors?
All SMAZ6V8-13-F 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 SMAZ6V8-13-F meets industry standards.
7.What is the process for return or replacement of SMAZ6V8-13-F?
All SMAZ6V8-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAZ6V8-13-F, 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 SMAZ6V8-13-F part is unused and in its original packaging.
Return procedure for SMAZ6V8-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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