My Inquiry
My Account
Nexperia USA Inc. BZX84W-C62-QX
- Part No.:
- BZX84W-C62-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C62-QX.pdf
- Description:
- DIODE ZENER 62V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,498
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84W-C62-QX from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 62 V nominal Zener voltage at 2 mA, 215 Ω differential resistance, and 64.4 mV/K temperature coefficient - used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZX84W-C62-QX datasheet, BZX84W-C62-QX pinout, BZX84W-C62-QX application, or BZX84W-C62-QX equivalent, this device supports AEC-Q101-compliant designs requiring stable 62 V regulation under transient conditions, low capacitance (0.3 pF), and high surge immunity (40 W non-repetitive peak reverse power).
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ = 58.0–66.0 V at IZ = 2 mA, delivering predictable clamping behavior across −55 °C to +150 °C ambient range. Its 215 Ω differential resistance ensures minimal voltage shift under load variation.
Thermal resistance Rth(j-a) = 455 K/W (FR4 PCB, single-sided copper) defines its derating envelope, while non-repetitive peak reverse power dissipation reaches 40 W for 100 µs pulses - enabling robust transient suppression in automotive ECUs and sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 58.0 V to 66.0 V at IZ = 2 mA - defines clamping threshold for 62 V nominal rail protection |
| Differential Resistance (rdif) | 215 Ω at IZ = 2 mA - determines output impedance and regulation stiffness under current variation |
| Temperature Coefficient (SZ) | 64.4 mV/K - quantifies VZ drift per degree Celsius, critical for thermal stability in engine bay environments |
| Reverse Current (IR) | 50 nA at VR = 0.7 × VZnom - ensures ultra-low leakage in standby circuits |
| Diode Capacitance (Cd) | 0.3 pF at f = 1 MHz, VR = 0 V - enables use in high-frequency filtering and RF-coupled protection paths |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs - supports ESD/ISO 7637-2 pulse suppression without failure |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package: 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, 0.45 mm height - optimized for high-density automotive PCB layouts and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased during regulation |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical bond - must remain unconnected in layout |
| 3 | Cathode (K) | Connected to higher-potential node; carries regulated Zener current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including engine control, body electronics, and ADAS sensors |
| ±5 % Zener voltage tolerance | Ensures consistent clamping performance across production lots without post-assembly trimming |
| Low 0.3 pF junction capacitance | Minimizes signal distortion in high-speed data lines protected by parallel Zener configuration |
| 455 K/W thermal resistance | Enables predictable derating curves for thermal design of compact ECU modules |
| 40 W non-repetitive surge rating | Withstands ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 5a (load dump) without degradation |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 12 V/24 V battery-supplied microcontroller supply rails against load dump transients up to 60 V. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage clamp placed directly across VCC and GND. Use Value: Prevents MCU reset or latch-up during ISO 7637-2 Pulse 5a events with <10 ns response time and no external biasing. |
Use Scenario: Stabilizing reference voltage for 16-bit ADC front-end in industrial pressure transmitters operating at 60–65 V supply. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 62 V node for ratiometric scaling of analog sensor outputs. Use Value: Enables <±0.5 % full-scale accuracy over −40 °C to +105 °C due to matched temperature coefficient and low leakage. |
| Automotive Camera Module ESD Protection | High-Frequency RF Bias Network Clamp |
Use Scenario: Secondary protection stage downstream of TVS diodes in rear-view camera power input, handling residual fast transients. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp absorbing sub-100 ns spikes that bypass primary TVS. Use Value: 0.3 pF capacitance avoids degrading 100 MHz MIPI CSI-2 video signal integrity while maintaining 62 V standoff. |
Use Scenario: DC bias stabilization in 2.4 GHz Wi-Fi front-end amplifier bias tee networks where RF path must remain unloading. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed DC potential on RF choke without perturbing impedance match. Use Value: Sub-picofarad capacitance prevents detuning of matching networks; 215 Ω rdif ensures stable bias point under RF modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B62-Q | ±2 % tolerance (5.8–6.2 V tighter band), 150 Ω rdif, 64.4 mV/K SZ | Higher precision required in feedback loops of isolated DC-DC converters | Select when VZ stability across temperature and current is prioritized over cost |
| MMSZ5259B-TP | 62 V nominal, ±5 %, SOD-123 package, 200 mW Ptot, 170 Ω rdif, 0.5 pF Cd | Larger footprint; suited for non-automotive industrial boards with less density constraint | Choose when SOT323 assembly capability is unavailable or thermal margin exceeds 275 mW requirement |
Compared with BZX84W-C62-QX, the BZX84W-B62-Q offers tighter voltage control for closed-loop systems, while MMSZ5259B-TP trades miniaturization for easier hand-soldering and higher surge endurance in non-automotive contexts - all three maintain identical 62 V regulation function but differ in AEC compliance, size, and thermal envelope.
Availability
BZX84W-C62-QX is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor reference, high-frequency RF biasing, and camera module ESD suppression requiring stable component supply across extended temperature ranges and AEC-Q101 compliance.
Supply support for BZX84W-C62-QX 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 energy-efficient solutions.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh automotive environments.
FAQ
What is the maximum continuous reverse current the BZX84W-C62-QX can sustain at 25 °C?
The device supports a maximum forward current of 200 mA, but as a Zener diode operated in reverse breakdown, its continuous reverse current is limited by power dissipation. At 25 °C ambient and 275 mW Ptot, the maximum sustainable reverse current is approximately 4.4 mA (275 mW ÷ 62 V), assuming full voltage drop across the diode.
Does the 'n.c.' pin require PCB connection or grounding?
No - Pin 2 is internally not connected and must remain unconnected on the PCB. Routing traces or applying solder paste to this pad violates the SOT323 mechanical specification and may cause solder bridging or thermal stress during reflow. The pad serves only as a mechanical anchor.
How does the 64.4 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Over this 165 K range, the Zener voltage shifts by approximately ±10.6 V (64.4 mV/K × 165 K), resulting in a total span of 51.4 V to 72.6 V. This is inherent to the 62 V Zener physics; system-level compensation (e.g., using complementary diodes or digital calibration) is required for sub-1 % accuracy across temperature.
Can BZX84W-C62-QX replace a 1N4742A in an existing design?
No - the 1N4742A is a 12 V, 1 W through-hole Zener with TO-204AA package and ±5 % tolerance. BZX84W-C62-QX is a 62 V, 275 mW SOT323 device. Voltage, power, package, and thermal behavior are incompatible; direct substitution would cause catastrophic overvoltage or insufficient clamping.
BZX84W-C62-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):
- 62 V
- Tolerance:
- ±6.45%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 215 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 43.4 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-C62-QX FAQ
1.How can I place an order for BZX84W-C62-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C62-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-C62-QX reliable?
The price and inventory of BZX84W-C62-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-C62-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C62-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C62-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C62-QX?
BZX84W-C62-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C62-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-C62-QX?
For technical support, including BZX84W-C62-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C62-QX requirements.
6.How does Aetrix verify that BZX84W-C62-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-C62-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-C62-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C62-QX?
All BZX84W-C62-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C62-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-C62-QX part is unused and in its original packaging.
Return procedure for BZX84W-C62-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C62-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…
