My Inquiry
My Account
Nexperia USA Inc. BZX84W-B62-QX
- Part No.:
- BZX84W-B62-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B62-QX.pdf
- Description:
- DIODE ZENER 62V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:6,319
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84W-B62-QX from Nexperia is a ±2% tolerance Zener diode with 62 V nominal regulation voltage, 150 Ω typical differential resistance at 5 mA, and AEC-Q101 qualification for automotive use. It operates in SOT323 (SC-70) package, delivers 275 mW total power dissipation on FR4 PCB, and maintains stable voltage reference in low-power biasing and overvoltage protection circuits.
For engineers reviewing the BZX84W-B62-QX datasheet, BZX84W-B62-QX pinout, BZX84W-B62-QX application, or BZX84W-B62-QX equivalent, this page provides verified Zener voltage, thermal resistance, reverse leakage, temperature coefficient, and automotive qualification status - all critical for precision voltage reference and transient suppression design validation.
Technical Context
This Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown mode. Its 62 V nominal Zener voltage is specified at IZ = 5 mA with ±2% tolerance, and exhibits a positive temperature coefficient of +64.4 mV/K at that current, enabling predictable drift compensation in temperature-sensitive circuits.
The device features a non-connected (n.c.) terminal (Pin 2), isolating the anode (Pin 1) and cathode (Pin 3) electrically and thermally. Its 455 K/W junction-to-ambient thermal resistance reflects performance on standard FR4 PCB with single-sided copper, directly impacting steady-state power derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 62 V nominal at IZ = 5 mA; defines precise reverse-bias regulation point for reference and clamping |
| Tolerance | ±2 % (B-series); ensures tight voltage matching across production lots for calibrated circuits |
| Differential Resistance rdif | 150 Ω max at IZ = 5 mA; determines output impedance and load regulation error under varying current |
| Temperature Coefficient SZ | +64.4 mV/K at IZ = 2 mA; quantifies voltage drift per degree Celsius for thermal stability analysis |
| Total Power Dissipation Ptot | 275 mW at Tamb = 25 °C on FR4 PCB; sets maximum continuous DC or average pulsed power handling |
| Reverse Leakage IR | 50 nA max at VR = 0.7 × VZnom; defines minimum off-state current in high-impedance bias networks |
| Junction Temperature Tj | −55 °C to +150 °C operating range; supports under-hood automotive environments without derating loss |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package: 1.35 mm × 1.75 mm footprint, 0.95 mm height, 0.65 mm lead pitch, optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-bias terminal; connected to lower-potential node in regulation circuit |
| 2 | Not Connected (n.c.) | Electrically isolated; no internal bond wire or silicon connection; must remain unconnected on PCB |
| 3 | Cathode (K) | Reverse-bias terminal; connected to higher-potential node; carries Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Low capacitance | 0.3 pF at VR = 0 V, f = 1 MHz; minimizes signal distortion in RF and high-speed digital interface protection |
| High surge capability | 40 W non-repetitive peak reverse power (tp = 100 µs); withstands ESD and load-dump transients |
| Stable ±2% tolerance | Enables direct replacement in precision feedback loops without external trimming resistors |
Applications
| Automotive ECU Voltage Reference | Industrial Sensor Biasing |
|---|---|
Use Scenario: Providing stable 62 V reference for analog front-end comparators in engine control units. IC Role / Device Role / Timing Role: Zener diode acts as primary shunt voltage reference for ADC input scaling and overvoltage detection thresholds. Use Value: ±2% tolerance and +64.4 mV/K TC enable accurate threshold setting across −40 °C to +125 °C under-hood operation. | Use Scenario: Biasing high-voltage photodiode arrays in industrial optical inspection systems. IC Role / Device Role / Timing Role: Supplies regulated reverse bias to photodiodes requiring stable 62 V for consistent quantum efficiency. Use Value: 150 Ω differential resistance ensures minimal voltage droop under 10–100 µA photocurrent variations. |
| Power Supply Overvoltage Clamp | Communications Line Protection |
Use Scenario: Clamping 60 V DC bus against transient spikes in 48 V telecom power supplies. IC Role / Device Role / Timing Role: Shunt protector activated during >62 V excursions, diverting surge current away from downstream regulators. Use Value: 40 W non-repetitive surge rating absorbs 100 µs pulses without degradation, meeting IEC 61000-4-5 Level 3. | Use Scenario: Protecting RS-485 transceiver inputs from induced surges on long industrial fieldbus cables. IC Role / Device Role / Timing Role: Low-capacitance (0.3 pF) Zener placed between data line and ground to clamp fast transients. Use Value: Sub-picofarad capacitance preserves signal integrity up to 50 Mbps without edge distortion or timing jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C62-Q | ±5% tolerance (vs. ±2%), identical 62 V nominal, same SOT323 package and thermal specs | Acceptable where calibration margin allows wider voltage spread; lower cost for non-critical references | Select when absolute voltage accuracy is secondary to cost and availability |
| MMSZ5259B-TP | 62 V nominal, ±5%, SOD-123 package, 500 mW Ptot, higher Rth(j-a) (350 K/W) | Higher power handling but larger footprint; less suitable for ultra-dense automotive PCBs | Choose only if board space permits larger package and 500 mW dissipation is required |
Compared with BZX84W-C62-Q, the BZX84W-B62-QX offers tighter voltage control essential for precision feedback; versus MMSZ5259B-TP, it trades power capacity for compactness and automotive qualification-critical for space-constrained, mission-critical vehicle electronics.
Availability
BZX84W-B62-QX is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and telecom power clamping requiring stable component supply, AEC-Q101 compliance, and SOT323 footprint compatibility.
Supply support for BZX84W-B62-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 automotive Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh-environment electronic control units and power systems.
FAQ
What is the maximum reverse current at 43.4 V for BZX84W-B62-QX?
At VR = 43.4 V (0.7 × 62 V), the maximum reverse leakage current is 50 nA, measured at Tj = 25 °C. This value remains valid across the full operating temperature range per Table 7 specifications and confirms suitability for high-impedance bias networks where leakage must stay below 100 nA.
Can BZX84W-B62-QX be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, minor VZ mismatches cause current hogging. The BZX84W-B62-QX has no built-in current-sharing mechanism; paralleling risks thermal runaway and premature failure. Use a single device within its 275 mW limit or select a higher-power alternative.
Is Pin 2 internally connected or should it be left floating on the PCB?
Pin 2 is explicitly marked "n.c." (not connected) in the official Nexperia datasheet and has no internal silicon or bond-wire connection. It must remain unconnected on the PCB layout-neither tied to ground nor routed-to avoid unintended parasitic coupling or mechanical stress on the die attach.
Does the AEC-Q101 qualification cover solder reflow profile compliance?
Yes-AEC-Q101 qualification includes evaluation against JEDEC J-STD-020 moisture sensitivity and reflow profile requirements (peak temperature ≥ 260 °C). The BZX84W-B62-QX is rated MSL1 and validated for standard lead-free reflow, as confirmed by Nexperia's package outline documentation and process qualification reports.
BZX84W-B62-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:
- ±1.94%
- 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-B62-QX FAQ
1.How can I place an order for BZX84W-B62-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B62-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-B62-QX reliable?
The price and inventory of BZX84W-B62-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-B62-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-B62-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B62-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B62-QX?
BZX84W-B62-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B62-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-B62-QX?
For technical support, including BZX84W-B62-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B62-QX requirements.
6.How does Aetrix verify that BZX84W-B62-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-B62-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-B62-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-B62-QX?
All BZX84W-B62-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B62-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-B62-QX part is unused and in its original packaging.
Return procedure for BZX84W-B62-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B62-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…
