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Nexperia USA Inc. NZX6V8B,133
- Part No.:
- NZX6V8B,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX6V8B,133.pdf
- Description:
- DIODE ZENER 6.75V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,415
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Product details
Overview
NZX6V8B,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 6.6–6.9 V nominal Zener voltage with 15 Ω typical differential resistance and ≤4 µA reverse leakage at 5 mA test current. It delivers stable reference performance in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the NZX6V8B,133 datasheet, NZX6V8B,133 pinout, NZX6V8B,133 application, or NZX6V8B,133 equivalent, this device is selected for its low thermal resistance (380 K/W junction-to-ambient), axial-leaded mechanical robustness, and tight 6.8 V tolerance band - critical for ±1% regulation accuracy in industrial sensor interfaces and embedded power monitors.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 6.6–6.9 V at IZ = 5 mA, exhibiting low dynamic impedance (15 Ω typ.) and minimal temperature coefficient drift across 25–150 °C. Its glass-sealed SOD27 construction ensures long-term stability under thermal cycling and humidity exposure.
The device complies with IEC 60134 absolute maximum ratings: 500 mW total power dissipation, 250 mA peak forward current, and 175 °C maximum junction temperature. Thermal resistance values (Rth(j-a) = 380 K/W, Rth(j-t) = 300 K/W) are measured on FR4 PCB with 8 mm lead length, defining real-world derating limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.6–6.9 V at IZ = 5 mA - defines precise clamping threshold for 6.8 V nominal regulation |
| Differential Resistance (rdif) | 15 Ω typical - ensures <10 mV output shift per 0.1 mA load variation in feedback networks |
| Reverse Leakage (IR) | ≤4 µA at VR = 5 V - minimizes quiescent current error in high-impedance reference nodes |
| Total Power Dissipation (Ptot) | 500 mW max at Ttp ≤ 25 °C - supports continuous operation up to 73 mA at 6.8 V without heatsinking |
| Thermal Resistance (Rth(j-a)) | 380 K/W - requires ≥10 °C/W ambient margin for safe 500 mW operation in enclosed enclosures |
| Junction Temperature (Tj) | −65 to +175 °C - enables deployment in extended-temperature industrial control modules |
Pinout & Package
Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with cathode band marking. Dimensions: 4.25 mm max length, 1.85 mm max diameter, 25.4 mm min lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential rail; completes bias path for controlled conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over 15+ year field life in humid environments |
| Low differential resistance | 15 Ω typical enables <±0.5% regulation error across 1–10 mA load range in shunt regulators |
| Tight Zener voltage tolerance | 6.6–6.9 V band (B-grade) supports ±1.5% initial accuracy without external trimming |
| Low leakage current | ≤4 µA at 5 V reverse bias reduces standby power loss in battery-backed monitoring circuits |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Supply Monitoring |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADCs measuring 4–20 mA loop signals in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode provides low-drift 6.8 V reference for op-amp gain-setting and ADC VREF generation. Use Value: 15 Ω rdif maintains <0.1 LSB error across temperature, enabling ±0.05% measurement linearity. |
Use Scenario: Detecting brown-out conditions on 5 V microcontroller rails using comparator-based reset circuitry. IC Role / Device Role / Timing Role: Acts as precision 6.8 V threshold clamp feeding comparator input to trigger reset at 4.75 V system rail. Use Value: ≤4 µA leakage avoids false triggering during deep-sleep modes with µA-level system currents. |
| DC-DC Converter Feedback Divider | Overvoltage Protection Clamp |
|
Use Scenario: Setting output voltage of isolated flyback converter via optocoupler-coupled feedback network. IC Role / Device Role / Timing Role: Provides stable 6.8 V reference for TL431-like shunt regulator configuration in secondary-side control. Use Value: Hermetic SOD27 package withstands reflow and long-term bias stress, ensuring >10-year feedback accuracy. |
Use Scenario: Clamping transient surges on 5 V USB-powered peripheral lines to prevent IC damage. IC Role / Device Role / Timing Role: Fast-acting Zener shunts >6.9 V spikes to ground before downstream logic reaches destructive voltage. Use Value: 500 mW Ptot absorbs 100 ns/1 A surge events without parametric shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C6V8-TR | Plastic DO-35 package; 6.5–7.1 V VZ range; 20 Ω rdif; 500 mW rating | Lower moisture resistance; higher rdif increases regulation error by ~0.3% | Select when cost sensitivity outweighs long-term stability requirements in non-harsh environments |
| 1N4735A | DO-41 package; 6.4–7.0 V VZ; 500 mW; 10 µA IR at 5 V | Larger footprint; 2.5× higher leakage degrades low-power sleep-mode accuracy | Choose only for legacy board compatibility where SOD27 footprint cannot be modified |
Compared with BZX55C6V8-TR and 1N4735A, NZX6V8B,133 offers superior long-term voltage stability due to hermetic sealing, tighter VZ tolerance, and lower leakage - making it preferred for industrial-grade reference and protection circuits requiring >10-year calibration retention.
Availability
NZX6V8B,133 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller power monitoring, DC-DC feedback networks, and overvoltage protection circuits requiring stable component supply with guaranteed long-lifecycle availability.
Supply support for NZX6V8B,133 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in automotive, industrial, and consumer applications.
The NZX series targets general-purpose Zener regulation with hermetic reliability, focusing on stable voltage references for analog signal chains and power management in harsh-environment electronics.
FAQ
What is the maximum continuous Zener current for NZX6V8B,133 at 25 °C ambient?
At Ta = 25 °C with device mounted on FR4 PCB (8 mm leads), the maximum continuous Zener current is 73.5 mA - calculated from Ptot = 500 mW ÷ VZ(typ) = 6.8 V. Derating is required above 25 °C per the 380 K/W thermal resistance specification.
How does the SOD27 glass package improve reliability versus plastic DO-35 alternatives?
The hermetically sealed SOD27 glass package prevents moisture diffusion into the junction, eliminating parameter drift caused by humidity-induced surface conduction. This ensures <0.1% VZ shift over 10 years at 85 °C/85% RH - a key advantage over plastic-packaged Zeners in industrial deployments.
Can NZX6V8B,133 be used in series with other Zeners for higher-voltage references?
Yes - its matched differential resistance (15 Ω) and tight VZ tolerance enable predictable series stacking. Two units yield 13.2–13.8 V with <±3% combined tolerance, suitable for custom reference generation where standard values are unavailable.
What is the forward voltage drop at 200 mA, and how does it affect reverse-bias operation?
VF is ≤1.5 V at IF = 200 mA, but this parameter is irrelevant during normal Zener operation - the device functions exclusively in reverse breakdown. Forward conduction only occurs during fault conditions or incorrect polarity installation, where VF limits surge current magnitude.
NZX6V8B,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- NZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.75 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ALF2
NZX6V8B,133 FAQ
1.How can I place an order for NZX6V8B,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX6V8B,133 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 NZX6V8B,133 reliable?
The price and inventory of NZX6V8B,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX6V8B,133 is usually 5 days.
3.What payment methods are accepted for NZX6V8B,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX6V8B,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX6V8B,133?
NZX6V8B,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX6V8B,133 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 NZX6V8B,133?
For technical support, including NZX6V8B,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX6V8B,133 requirements.
6.How does Aetrix verify that NZX6V8B,133 is sourced from the original manufacturer or authorized distributors?
All NZX6V8B,133 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 NZX6V8B,133 meets industry standards.
7.What is the process for return or replacement of NZX6V8B,133?
All NZX6V8B,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX6V8B,133, 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 NZX6V8B,133 part is unused and in its original packaging.
Return procedure for NZX6V8B,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX6V8B,133 Tags
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