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Nexperia USA Inc. PZU84-C6V8R
- Part No.:
- PZU84-C6V8R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C6V8R.pdf
- Description:
- DIODE ZENER 6.8V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,223
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Product details
Overview
PZU84-C6V8R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, delivering 6.47 V to 7.14 V nominal breakdown voltage at IZ = 5 mA, with 60 Ω typical differential resistance and 3.5 mV/K temperature coefficient - used for precision voltage reference and overvoltage clamping in low-power analog circuits.
For engineers reviewing the PZU84-C6V8R datasheet, PZU84-C6V8R pinout, PZU84-C6V8R application, or PZU84-C6V8R equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at low bias current, leakage current under reverse bias, thermal resistance to solder point, and SOT23 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across load variations and supply fluctuations. Its hard breakdown knee and low leakage (≤0.5 μA at VR = 6.8 V) enable clean regulation in battery-powered sensor interfaces and ADC reference buffers.
The device exhibits a positive temperature coefficient of +1.2 mV/K to +4.5 mV/K near 6.8 V, supporting predictable drift compensation in temperature-sensitive analog chains. Thermal resistance from junction to solder point is 330 K/W, enabling reliable operation up to 150 °C junction temperature when mounted on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.47 V to 7.14 V at IZ = 5 mA - defines precise clamping threshold for 6.8 V nominal rail protection |
| Differential Resistance (rdif) | 60 Ω typ. at IZ = 5 mA - ensures minimal output voltage shift under load current changes |
| Temperature Coefficient (SZ) | +1.2 mV/K to +4.5 mV/K - enables predictable thermal drift modeling in reference designs |
| Reverse Leakage (IR) | ≤0.5 μA at VR = 6.8 V - preserves low quiescent current in always-on monitoring circuits |
| Total Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C - supports continuous regulation in compact SOT23 footprint without forced cooling |
| Junction-to-Solder-Point Rth | 330 K/W - allows accurate thermal budgeting for PCB copper area allocation |
| Capacitance (Cd) | 215 pF at f = 1 MHz, VR = 0 V - impacts high-frequency noise filtering capability in RF-adjacent circuits |
Pinout & Package
SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided 70 μm tin-plated copper mounting on FR4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node during Zener operation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or via allowed |
| 3 | Cathode (K) | Reverse-biased terminal; ties to regulated voltage rail or clamping node |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tight reference accuracy without post-calibration in 3.3 V/5 V system monitors |
| Hard breakdown knee | Ensures sharp transition into regulation - critical for overvoltage detection hysteresis |
| Low dynamic impedance (60 Ω) | Maintains <±10 mV output variation across 1–10 mA load current swings |
| Very low leakage (≤0.5 μA) | Permits use in microamp-level standby circuits without compromising battery life |
| SOT23 footprint compatibility | Supports automated placement and reflow on high-density boards with 0.6 mm solder land pitch |
Applications
| Power Supply Rail Clamping | ADC Reference Stabilization |
|---|---|
Use Scenario: Protecting 6.8 V analog front-end inputs from transient overvoltage events in industrial sensor nodes. IC Role / Device Role / Timing Role: Zener clamping element placed between signal line and ground to shunt excess energy above 7.14 V. Use Value: Limits voltage excursion to within 5 % of nominal rail, preventing damage to downstream op-amps and SAR ADC inputs. |
Use Scenario: Providing stable 6.8 V reference for 12-bit precision ADC in portable medical instrumentation. IC Role / Device Role / Timing Role: Low-noise voltage reference source feeding ADC VREF pin with minimal thermal drift. Use Value: Achieves ≤0.5 LSB error contribution from reference drift over 0–70 °C ambient range. |
| Microcontroller Reset Circuit | Low-Power Sensor Biasing |
Use Scenario: Generating clean reset threshold for 3.3 V MCU using resistor-divider + Zener clamp topology. IC Role / Device Role / Timing Role: Precision voltage threshold detector defining power-on reset release point. Use Value: Guarantees reset deassertion only after VCC exceeds 6.47 V, eliminating brown-out glitches. |
Use Scenario: Biasing photodiode amplifier stages in optical smoke detectors with ultra-low standby current. IC Role / Device Role / Timing Role: Stable bias voltage source for transimpedance amplifier feedback network. Use Value: Maintains 0.1 % gain stability over temperature while consuming <1 μA quiescent current. |
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 | ±5 % tolerance, 80 Ω rdif, 250 mW Ptot, same SOT23 package | Higher voltage uncertainty and impedance - suitable only for non-critical clamping | Select when cost sensitivity outweighs regulation accuracy requirements |
| MMSZ4688 | ±5 % tolerance, 100 Ω rdif, 350 mW Ptot, SOD-123 package | Larger footprint, higher power rating but looser tolerance and poorer low-current regulation | Choose only if board layout requires SOD-123 or >250 mW surge handling is mandatory |
Compared with BZX84-C6V8 and MMSZ4688, PZU84-C6V8R delivers tighter voltage control (±2 % vs ±5 %), lower dynamic impedance (60 Ω vs ≥80 Ω), and optimized low-leakage performance - making it preferred for precision reference and low-power analog systems where regulation fidelity directly impacts measurement integrity.
Availability
PZU84-C6V8R is available at Aetrix Electronics and suitable for power supply rail clamping, ADC reference stabilization, microcontroller reset circuitry, and low-power sensor biasing requiring stable component supply across production lifecycles.
Supply support for PZU84-C6V8R 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 focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered for precision voltage reference and overvoltage protection in space-constrained, low-power analog systems with stringent thermal and leakage requirements.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The PZU84-C6V8R has a nominal Zener voltage of 6.8 V, with guaranteed breakdown occurring between 6.47 V and 7.14 V at 5 mA test current. It is not rated for regulation above 7.14 V - exceeding this risks irreversible avalanche degradation or thermal runaway under sustained bias.
Can Pin 2 be grounded or left unconnected on the PCB?
Pin 2 is internally not connected (n.c.) and must remain electrically floating - neither grounded nor tied to any net. Connecting it risks internal shorting or parametric shift due to parasitic coupling; the PCB footprint must isolate this pad completely per Nexperia's SOT23 layout guidelines.
How does its 330 K/W junction-to-solder-point thermal resistance affect PCB layout?
A 330 K/W Rth(j-sp) means each 100 mW dissipated raises junction temperature by 33 K above solder point temperature. To stay within 150 °C max junction limit at 70 °C ambient, ensure ≥10 mm² of 70 μm copper pour connected to cathode pad - verified per Nexperia's SOT23 wave/reflow footprints.
Is this Zener suitable for use in automotive applications?
No - the PZU84-C6V8R is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or extended lifetime reliability data. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use only in industrial, consumer, or commercial equipment.
PZU84-C6V8R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 500 mV
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-C6V8R FAQ
1.How can I place an order for PZU84-C6V8R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C6V8R 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 PZU84-C6V8R reliable?
The price and inventory of PZU84-C6V8R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C6V8R is usually 5 days.
3.What payment methods are accepted for PZU84-C6V8R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C6V8R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C6V8R?
PZU84-C6V8R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C6V8R 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 PZU84-C6V8R?
For technical support, including PZU84-C6V8R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C6V8R requirements.
6.How does Aetrix verify that PZU84-C6V8R is sourced from the original manufacturer or authorized distributors?
All PZU84-C6V8R 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 PZU84-C6V8R meets industry standards.
7.What is the process for return or replacement of PZU84-C6V8R?
All PZU84-C6V8R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C6V8R, 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 PZU84-C6V8R part is unused and in its original packaging.
Return procedure for PZU84-C6V8R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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