My Inquiry
My Account
Nexperia USA Inc. BZX84W-B6V2-QX
- Part No.:
- BZX84W-B6V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B6V2-QX.pdf
- Description:
- DIODE ZENER 6.2V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84W-B6V2-Q from Nexperia is a ±2% tolerance Zener diode in SOT323 (SC-70) package, rated for 6.2 V nominal regulation voltage at 5 mA, with 150 Ω typical differential resistance and 2.3 mV/K temperature coefficient. It delivers 275 mW total power dissipation on FR4 PCB and supports automotive-grade voltage reference and overvoltage protection in compact DC-DC feedback loops.
For engineers reviewing the BZX84W-B6V2-Q datasheet, BZX84W-B6V2-Q pinout, BZX84W-B6V2-Q application, or BZX84W-B6V2-Q equivalent, this page provides verified Zener parameters, AEC-Q101 qualification status, thermal resistance (455 K/W), reverse leakage (3 µA at 4 V), and SOT323 terminal mapping to support precision analog design and automotive ECU power rail stabilization.
Technical Context
This Zener diode operates in reverse breakdown mode with a tightly controlled 6.2 V nominal Zener voltage (VZ) at IZ = 5 mA, exhibiting low dynamic impedance (150 Ω typ.) and positive temperature coefficient (+2.3 mV/K) - enabling stable voltage reference generation across temperature. Its 3 µA reverse current at 4 V ensures minimal quiescent power loss in low-current bias networks.
The device uses planar epitaxial construction for consistent parametric performance and is qualified per AEC-Q101 for junction temperatures up to 150 °C. Its SOT323 package enables high-density placement while maintaining thermal resistance of 455 K/W to ambient on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal at IZ = 5 mA; ±2% tolerance ensures tight regulation in feedback networks |
| Differential Resistance (rdiff) | 150 Ω typical at IZ = 5 mA; minimizes output voltage variation under load transients |
| Temperature Coefficient (SZ) | +2.3 mV/K at IZ = 5 mA; enables predictable drift compensation in temperature-sensitive references |
| Reverse Leakage (IR) | 3 µA max at VR = 4 V; reduces standby current in always-on monitoring circuits |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB; defines maximum continuous power handling in surface-mount layout |
| Junction Temperature (Tj) | 150 °C maximum; supports operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-a)) | 455 K/W; determines temperature rise above ambient under steady-state power dissipation |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals, optimized for automated assembly and high board density. Dimensions: 2.2 mm × 1.35 mm × 0.95 mm (L × W × H), 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Electrically isolated internal pad; no PCB trace connection required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power supplies |
| ±2% Zener voltage tolerance | Enables precise voltage clamping without post-production trimming in safety-critical systems |
| Low 3 µA reverse leakage at 4 V | Reduces standby current in battery-backed sensor interfaces and always-on microcontroller reset circuits |
| 150 Ω differential resistance | Stabilizes output voltage against load current changes in LDO error amplifier feedback paths |
| SOT323 footprint compatibility | Supports reflow soldering with standard 0.55 mm paste stencil apertures and 2.65 mm × 2.35 mm land pattern |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Provides stable 6.2 V reference for ADC voltage scaling and microcontroller VREF in engine management systems operating at −40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Zener voltage reference diode in precision bandgap calibration loop. Use Value: ±2% tolerance and +2.3 mV/K TC ensure <±15 mV total drift over full temperature range, meeting ASIL-B functional safety requirements. |
Use Scenario: Clamps transient overvoltage on 4–20 mA current loop inputs exposed to industrial ESD and inductive switching noise. IC Role / Device Role / Timing Role: Reverse-biased Zener clamp protecting op-amp input stage from >1 kV surges. Use Value: 275 mW Ptot and 40 W non-repetitive peak power enable robust 10/1000 µs surge absorption without degradation. |
| Medical Infusion Pump Power Monitoring | Consumer IoT Battery Voltage Supervisor |
Use Scenario: Monitors 12 V supply rail in Class II medical devices using resistive divider into MCU ADC, requiring long-term stability and low drift. IC Role / Device Role / Timing Role: Precision shunt reference in ratiometric sensing network. Use Value: 150 Ω rdiff limits divider output impedance, reducing ADC sampling error and noise coupling in 24-bit sigma-delta converters. |
Use Scenario: Detects lithium-ion battery undervoltage (2.8 V cutoff) via resistor divider feeding MCU GPIO, operating from coin-cell backup. IC Role / Device Role / Timing Role: Low-leakage Zener element in voltage threshold detection circuit. Use Value: 3 µA reverse leakage at 4 V extends shelf life beyond 10 years in storage mode, critical for sealed IoT edge nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C6V2-Q | ±5% tolerance (vs. ±2%), identical VZ nominal, same SOT323 package and thermal specs | Acceptable where cost sensitivity outweighs precision; not suitable for ASIL-B or high-accuracy references | Select when budget constraints dominate and ±5% regulation error is acceptable in non-safety-critical functions |
| MMSZ4687T1G | 6.2 V nominal, ±5%, SOD-123 package (larger footprint), 500 mW Ptot, 100 Ω rdiff | Higher power handling but incompatible with ultra-dense layouts; lacks AEC-Q101 qualification | Choose only if board space permits larger package and automotive qualification is not required |
Compared with BZX84W-C6V2-Q, the BZX84W-B6V2-Q offers tighter tolerance for safety-critical references; versus MMSZ4687T1G, it trades higher power capability for AEC-Q101 compliance and smaller SOT323 footprint essential in modern ECU modules.
Availability
BZX84W-B6V2-Q is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog protection, medical infusion pump power monitoring, and consumer IoT battery supervision requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZX84W-B6V2-Q 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, with leadership in automotive-qualified components.
The BZX84W-Q series belongs to Nexperia's automotive-grade Zener diode product line, engineered specifically for precision voltage reference and overvoltage protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The BZX84W-B6V2-Q has a nominal Zener voltage of 6.2 V at 5 mA test current, with guaranteed minimum and maximum values of 6.08 V and 6.32 V respectively. It enters stable reverse breakdown within this band and is not rated for regulation above 6.32 V under normal operating conditions.
Does this part require a series current-limiting resistor in all applications?
Yes - a series resistor is mandatory to limit reverse current to within the 275 mW power rating and prevent thermal runaway. For example, at 12 V supply and 6.2 V regulation, a minimum 1.2 kΩ resistor limits current to ~4.8 mA, staying within safe operating area at 25 °C ambient.
Is pin 2 electrically functional or a mechanical dummy pad?
Pin 2 is explicitly marked "n.c." (not connected) in the official Nexperia datasheet and has no internal electrical connection. It serves only as a mechanical anchor during SMT placement and must remain unconnected on the PCB layout.
How does its AEC-Q101 qualification impact reliability in non-automotive use?
AEC-Q101 qualification requires extended stress testing (HTOL, TC, UHAST) beyond standard JEDEC requirements, resulting in demonstrated 10× lower infant mortality and improved long-term parameter stability - beneficial even in industrial and medical applications demanding >10-year field life.
BZX84W-B6V2-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±1.94%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-B6V2-QX FAQ
1.How can I place an order for BZX84W-B6V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B6V2-QX 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 BZX84W-B6V2-QX reliable?
The price and inventory of BZX84W-B6V2-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B6V2-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-B6V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B6V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B6V2-QX?
BZX84W-B6V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B6V2-QX 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 BZX84W-B6V2-QX?
For technical support, including BZX84W-B6V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B6V2-QX requirements.
6.How does Aetrix verify that BZX84W-B6V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-B6V2-QX 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 BZX84W-B6V2-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-B6V2-QX?
All BZX84W-B6V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B6V2-QX, 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 BZX84W-B6V2-QX part is unused and in its original packaging.
Return procedure for BZX84W-B6V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B6V2-QX 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…
