My Inquiry
My Account
Nexperia USA Inc. BZX8450-C6V8-QVL
- Part No.:
- BZX8450-C6V8-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C6V8-QVL.pdf
- Description:
- DIODE ZENER 6.8V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,297
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX8450-C6V8-QVL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and biasing in automotive and 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 1.2 mV/K temperature coefficient. Used in ECU sensor biasing, battery monitor reference, and low-power LDO feedback networks.
For engineers reviewing the BZX8450-C6V8-QVL datasheet, BZX8450-C6V8-QVL pinout, BZX8450-C6V8-QVL application, or BZX8450-C6V8-QVL equivalent, this page provides verified electrical characteristics, AEC-Q101 qualification status, thermal resistance data (Rth(j-a) = 500 K/W), and direct replacement guidance for automotive-grade Zener selection.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable reverse breakdown voltage across its cathode-anode terminals under low-current conditions (IZ = 50 µA to 5 mA). Its intentional minor leakage rise improves switching speed and reduces noise in sensing circuits.
Designed per IEC 60134 absolute maximum ratings, it supports 200 mA forward current and withstands 40 W non-repetitive peak reverse power (tp = 100 µs). Junction temperature is rated to 150 °C, and ambient operating range spans −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.8 V at IZ = 50 µA - defines precise reference point for low-bias analog circuits |
| Zener Tolerance | ±5 % - enables cost-optimized selection where tight regulation is not critical |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient | +1.2 mV/K - ensures predictable VZ drift over automotive temperature range |
| Forward Voltage | 0.9 V at IF = 10 mA - defines conduction threshold during forward bias operation |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Reverse Current | 0.1 µA at VR = 5.1 V - confirms low leakage for battery-critical standby modes |
Pinout & Package
SOT23 plastic surface-mounted package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, tin-plated copper footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased during regulation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating on PCB layout |
| 3 | Cathode (K) | Connected to regulated voltage node; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including engine control, ADAS sensors, and infotainment power rails |
| Low test current operation | Specified at 50 µA - enables use in microamp-level battery-powered systems without loading error |
| Optimized leakage profile | Intentional minor IR rise - reduces switching transients and broadband noise in feedback paths |
| Thermal robustness | Rth(j-sp) = 330 K/W - supports reliable operation when soldered to cathode tab on thermally constrained boards |
Applications
| Automotive ECU Sensor Biasing | Portable Battery Monitor Reference |
|---|---|
Use Scenario: Providing stable bias voltage to pressure/temperature sensor bridges in engine control units. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed excitation potential across Wheatstone bridge elements. Use Value: ±5 % tolerance and +1.2 mV/K TC ensure <±15 mV drift over −40 °C to +125 °C, meeting ASIL-B sensor accuracy requirements. |
Use Scenario: Generating reference voltage for ADC input in lithium-ion battery fuel gauges. IC Role / Device Role / Timing Role: Low-current Zener reference feeding high-impedance op-amp buffer stage. Use Value: 50 µA test current and 0.1 µA leakage at 75 % of VZ enable >10-year shelf-life compliance in coin-cell-powered devices. |
| Low-Power LDO Feedback Network | Industrial PLC Input Protection Clamp |
Use Scenario: Setting regulated output voltage in ultra-low-quiescent-current LDOs for IoT edge nodes. IC Role / Device Role / Timing Role: Precision voltage divider element in feedback loop of adjustable linear regulator. Use Value: 80 Ω dynamic resistance minimizes output voltage error under load step changes up to 100 µA. |
Use Scenario: Clamping transient overvoltage on 24 V industrial digital input channels. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing surge energy before downstream logic ICs. Use Value: 40 W non-repetitive peak power rating (tp = 100 µs) handles IEC 61000-4-5 Level 3 surges without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8,115 | Same SOT23 package, ±5 % tolerance, but not AEC-Q101 qualified; higher rdiff (100 Ω) | Limited to commercial-grade consumer or industrial equipment without automotive certification | Select when AEC-Q101 is not required and cost is prioritized over thermal stability |
| MMSZ5234B-TP | ±5 % tolerance, 6.8 V nominal, but only rated to 150 mW Ptot and 125 °C Tj max | Unsuitable for under-hood automotive environments due to lower thermal and reliability specs | Choose only for space-constrained commercial designs with ambient <85 °C and no vibration/stress validation |
Compared with BZX8450-C6V8-QVL, the BZX84-C6V8,115 lacks automotive qualification and exhibits higher dynamic impedance, while MMSZ5234B-TP sacrifices 100 mW power headroom and 25 °C junction temperature margin-making the QVL variant uniquely suited for thermally demanding, safety-conscious vehicle subsystems.
Availability
BZX8450-C6V8-QVL is available at Aetrix Electronics and suitable for automotive ECU design, portable battery monitoring, and industrial PLC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8450-C6V8-QVL 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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BZX8450-Q series belongs to Nexperia's AEC-Q101-certified Zener diode portfolio, engineered specifically for low-current voltage reference and biasing in harsh-environment automotive electronics.
FAQ
What is the maximum reverse voltage this diode can sustain before breakdown?
The BZX8450-C6V8-QVL has a nominal Zener voltage of 6.8 V at 50 µA, with guaranteed minimum and maximum values of 6.46 V and 7.14 V respectively. It does not have a separate "maximum reverse voltage" rating-its specified reverse breakdown behavior begins within that band under defined test conditions.
Is pin 2 truly unconnected, or should it be grounded?
Pin 2 is internally not connected (n.c.), as confirmed in Table 2 of the datasheet. It must remain electrically floating on the PCB layout-neither grounded nor tied to any signal. Connecting it risks mechanical stress or unintended parasitic coupling in high-frequency applications.
How does the "intentional minor rise of leakage current" affect circuit performance?
This controlled increase in IR (to 0.1 µA at VR = 5.1 V) reduces minority-carrier lifetime effects, yielding faster turn-off response and lower broadband noise-critical in precision feedback loops and high-speed sensor interfaces where conventional Zeners exhibit ringing or settling delay.
Can this part replace older BZX84-C6V8 variants in existing designs?
Yes, BZX8450-C6V8-QVL is a drop-in replacement for BZX84-C6V8 in SOT23 footprints, matching pinout, voltage, and tolerance. However, its AEC-Q101 qualification, lower rdiff (80 Ω vs. 100 Ω), and optimized leakage make it superior for new automotive designs-no layout change needed.
BZX8450-C6V8-QVL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450-Q
- 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:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C6V8-QVL FAQ
1.How can I place an order for BZX8450-C6V8-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C6V8-QVL 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-C6V8-QVL reliable?
The price and inventory of BZX8450-C6V8-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C6V8-QVL is usually 5 days.
3.What payment methods are accepted for BZX8450-C6V8-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C6V8-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C6V8-QVL?
BZX8450-C6V8-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C6V8-QVL 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-C6V8-QVL?
For technical support, including BZX8450-C6V8-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C6V8-QVL requirements.
6.How does Aetrix verify that BZX8450-C6V8-QVL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C6V8-QVL 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-C6V8-QVL meets industry standards.
7.What is the process for return or replacement of BZX8450-C6V8-QVL?
All BZX8450-C6V8-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C6V8-QVL, 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-C6V8-QVL part is unused and in its original packaging.
Return procedure for BZX8450-C6V8-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C6V8-QVL Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
