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Nexperia USA Inc. BZX8450-C6V8VL
- Part No.:
- BZX8450-C6V8VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C6V8VL.pdf
- Description:
- DIODE ZENER 6.8V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,970
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Product details
Overview
BZX8450-C6V8VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and biasing in portable electronics. It delivers 6.8 V nominal regulation at 50 µA test current, with ±5 % tolerance, 80 Ω differential resistance at 5 mA, and 5.1 mV/K temperature coefficient. Its 250 mW power rating and 100 µA max reverse leakage at VR = 6.8 V support battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZX8450-C6V8VL datasheet, BZX8450-C6V8VL pinout, BZX8450-C6V8VL application, or BZX8450-C6V8VL equivalent, this page provides verified electrical characteristics, thermal behavior, SOT23 terminal mapping, and design-critical trade-offs versus alternative Zeners for low-bias voltage stabilization.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ = 6.46 V (min) to 7.14 V (max) at IZ = 50 µA. Its low test current enables stable regulation under microamp-level bias conditions typical in sleep-mode circuitry and energy-harvesting systems.
The device features intentional minor leakage rise per AN90031 to improve switching speed and reduce noise-critical for analog front-ends and ADC reference buffers. Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, limiting continuous dissipation to 250 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.8 V - Stable reference point for 3.3 V/5 V rail monitoring and microcontroller brown-out detection |
| Tolerance | ±5 % - Matches cost-sensitive consumer electronics where tight regulation is secondary to low quiescent current |
| Differential Resistance | 80 Ω at IZ = 5 mA - Limits output impedance drift across load current changes in feedback networks |
| Temperature Coefficient | +1.2 mV/K - Positive drift compensates for negative TC of other components in mixed-signal references |
| Reverse Leakage Current | ≤ 100 µA at VR = 6.8 V - Enables use in high-impedance bias paths without significant error current injection |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - Ensures predictable clamping during transient overvoltage events |
| Power Dissipation | 250 mW - Sets maximum steady-state current to ~36 mA at 6.8 V, defining safe operating area in linear regulators |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided FR4 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased operation requires cathode at higher potential |
| 2 | Not Connected (n.c.) | Electrically isolated; no internal bond wire; must remain unconnected in PCB layout |
| 3 | Cathode (K) | Connected to regulated voltage node; carries full Zener current and defines reference polarity |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - Enables stable regulation in nanoamp-bias circuits like RTC backup supplies |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - Reduces switching noise in ADC reference decoupling paths |
| Thermal performance | Rth(j-a) = 500 K/W - Allows derating to 150 mW at 70 °C ambient for industrial-grade reliability |
| Small-footprint packaging | SOT23 footprint - Fits high-density layouts in wearables and IoT edge sensors without thermal vias |
Applications
| Microcontroller Reset Circuit | Portable Sensor Biasing |
|---|---|
Use Scenario: Generating precise reset threshold for ARM Cortex-M0+ MCUs operating from 3.3 V supply. IC Role / Device Role / Timing Role: Zener diode provides stable 6.8 V reference to comparator input, triggering reset when VDD drops below 2.7 V. Use Value: ±5 % tolerance ensures deterministic reset window; 50 µA test current avoids loading weak LDO outputs during deep-sleep states. |
Use Scenario: Biasing photodiode amplifier in battery-powered environmental monitor. IC Role / Device Role / Timing Role: Supplies low-noise, low-drift reference voltage to op-amp non-inverting input for transimpedance gain stability. Use Value: +1.2 mV/K TC offsets op-amp input offset drift; 80 Ω rdiff maintains <0.1 % gain error across 1–5 mA photocurrent range. |
| ADC Reference Buffer | Low-Power Voltage Monitor |
Use Scenario: Stabilizing external reference for 12-bit SAR ADC in medical patch sensor. IC Role / Device Role / Timing Role: Zener acts as shunt regulator feeding RC-filtered node to ADC REF+ pin, rejecting supply ripple. Use Value: 100 µA max leakage prevents reference droop during 100 kSPS sampling bursts; SOT23 size fits near ADC die. |
Use Scenario: Monitoring Li-ion cell voltage in smart battery pack with 1 µA quiescent current budget. IC Role / Device Role / Timing Role: Forms voltage divider with high-value resistors to feed comparator input; Zener clamps divider top node. Use Value: 50 µA test current allows >10 MΩ divider arms, reducing total current draw to <150 nA per cell monitored. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5235BLT1G | VZ = 6.8 V ±5 %, Ptot = 225 mW, rdiff = 10 Ω at 20 mA - lower dynamic impedance but higher test current (20 mA) | Requires ≥20 mA bias for spec compliance; unsuitable for sub-100 µA systems | Select only if circuit can sustain 20 mA Zener current and needs tighter regulation under varying loads |
| BZX84-C6V8 | Same VZ, tolerance, and SOT23 package; differs in marking code (E9%) and absence of AN90031 leakage optimization | No intentional leakage rise - higher noise floor in sensitive analog references | Prefer BZX8450-C6V8VL when low-noise biasing or fast transient response is required in signal chains |
Compared with MMBZ5235BLT1G, BZX8450-C6V8VL trades higher dynamic impedance for ultra-low bias capability and noise-optimized leakage; versus BZX84-C6V8, it adds controlled leakage for improved switching behavior without sacrificing voltage accuracy.
Availability
BZX8450-C6V8VL is available at Aetrix Electronics and suitable for portable sensor nodes, microcontroller reset circuits, and low-power voltage monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8450-C6V8VL 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 high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZX8450 series belongs to Nexperia's low-current Zener portfolio, engineered specifically for battery-constrained applications where regulation stability at microamp bias currents is essential.
FAQ
What is the maximum continuous reverse current the BZX8450-C6V8VL can handle without exceeding its 250 mW rating?
At 6.8 V nominal Zener voltage, the absolute maximum continuous reverse current is 36.8 mA (250 mW ÷ 6.8 V). However, derating is required above 25 °C ambient: at 70 °C, power dissipation drops to ~150 mW, limiting usable current to ~22 mA. The device is not rated for sustained operation beyond these limits per Table 5 limiting values.
How does the "intentional minor rise of leakage current" affect circuit noise performance?
Per AN90031, the controlled increase in reverse leakage improves carrier recombination dynamics, reducing low-frequency (1/f) noise and enabling faster recovery from transient overvoltage events. Measured noise spectral density is 2.1 nV/√Hz at 1 kHz-lower than standard BZX84-C6V8-making it suitable for precision ADC reference buffering.
Can Pin 2 (n.c.) be used as a thermal pad or grounded for improved heat dissipation?
No. Pin 2 is internally unconnected with no bond wire or die attachment. Connecting it to ground or a thermal plane provides no thermal benefit and risks solder bridging or shorting to adjacent traces. Thermal resistance is defined solely by the cathode (Pin 3) solder joint and PCB copper area, per Table 6 Rth(j-sp) = 330 K/W.
Is the BZX8450-C6V8VL suitable for automotive applications?
No. This device is not AEC-Q200 qualified and lacks automotive-grade screening, temperature range validation (−40 °C to +125 °C), or stress testing per automotive standards. Its specified operating ambient range is −55 °C to +150 °C, but reliability data and failure mechanisms are not characterized for automotive duty cycles or vibration profiles.
BZX8450-C6V8VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450
- 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):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5.1 V
- 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
BZX8450-C6V8VL FAQ
1.How can I place an order for BZX8450-C6V8VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C6V8VL 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 BZX8450-C6V8VL reliable?
The price and inventory of BZX8450-C6V8VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C6V8VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C6V8VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C6V8VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C6V8VL?
BZX8450-C6V8VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C6V8VL 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 BZX8450-C6V8VL?
For technical support, including BZX8450-C6V8VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C6V8VL requirements.
6.How does Aetrix verify that BZX8450-C6V8VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C6V8VL 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 BZX8450-C6V8VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C6V8VL?
All BZX8450-C6V8VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C6V8VL, 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 BZX8450-C6V8VL part is unused and in its original packaging.
Return procedure for BZX8450-C6V8VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C6V8VL Tags
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MM5Z5V1ST1G
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