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Nexperia USA Inc. BZX384-A62X
- Part No.:
- BZX384-A62X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A62X.pdf
- Description:
- DIODE ZENER 62V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,759
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Product details
Overview
BZX384-A62X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision low-power voltage reference and overvoltage protection in space-constrained PCBs. It delivers a nominal 62 V breakdown voltage at 5 mA, with 150 Ω typical differential resistance, 0.05 μA reverse current at 49.6 V, and operates across –65 °C to +150 °C ambient.
For engineers reviewing the BZX384-A62X datasheet, BZX384-A62X pinout, BZX384-A62X application, or BZX384-A62X equivalent, key selection criteria include tight 62 V regulation tolerance, low thermal resistance (110 K/W junction-to-solder-point), SOD323 footprint compatibility, and non-repetitive surge capability up to 40 W for transient suppression.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain stable DC voltage under varying load and temperature conditions. Its ±1 % tolerance (BZX384-A series), 150 Ω max differential resistance at IZ = 5 mA, and positive temperature coefficient of +43.4 mV/K ensure predictable regulation drift in feedback loops and reference circuits.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it relies on thermal conduction through the cathode tab (Rth(j–sp) = 110 K/W) rather than ambient convection (Rth(j–a) = 415 K/W). The 300 mW total power dissipation limit applies only at Tamb ≤ 25 °C with standard footprint mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 61.38 V to 62.62 V at IZ = 5 mA - ensures precise 62 V regulation within ±1 % tolerance for feedback references |
| Differential Resistance (rdif) | ≤150 Ω at IZ = 5 mA - minimizes output voltage variation under load current changes |
| Reverse Current (IR) | ≤0.05 μA at VR = 49.6 V - guarantees low leakage in high-impedance bias networks |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables reliable anode-cathode polarity verification during functional test |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs - supports transient overvoltage clamping without failure |
| Junction Temperature (Tj) | –65 °C to +150 °C - allows operation in industrial and extended-temperature environments |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - defines continuous DC power handling under standard layout |
Pinout & Package
Package: SOD323 (SC-76), 2-terminal surface-mount plastic package with cathode marked by bar on top surface. Dimensions: 1.8 mm × 1.35 mm × 0.95 mm (L × W × H), 0.45 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % voltage tolerance | Enables direct replacement in precision 62 V reference designs without recalibration |
| Low differential resistance (150 Ω) | Reduces output voltage shift under ±1 mA load variation to <150 mV |
| SOD323 footprint compatibility | Supports automated placement on high-density boards with 0.45 mm pitch and 1.35 mm body width |
| 110 K/W junction-to-solder-point Rth | Allows 270 mW continuous dissipation at Tj = 150 °C when soldered to 1 mm² copper pad |
| 40 W non-repetitive surge rating | Clamps 62 V transients up to 648 V × 62 mA for 100 μs without degradation |
Applications
| Power Supply Feedback Reference | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Stabilizing output voltage in isolated flyback or buck-boost converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Provides accurate 62 V reference to TL431 or similar shunt regulator IC input. Use Value: ±1 % VZ tolerance maintains ±0.62 V output accuracy across line/load/temperature, reducing need for post-production trimming. |
Use Scenario: Protecting 60 V-rated MOSFET gates or ADC inputs from ESD or inductive kickback. IC Role / Device Role / Timing Role: Acts as passive clamp between signal line and ground, conducting only above 62 V. Use Value: 40 W surge rating absorbs 100 μs transients up to 648 V without parametric shift or failure. |
| Low-Power Sensor Biasing | Industrial Signal Conditioning |
|
Use Scenario: Generating stable 62 V bias for photomultiplier tubes or high-voltage op-amp stages. IC Role / Device Role / Timing Role: Supplies regulated DC voltage to sensor anode while rejecting ripple from upstream supply. Use Value: 0.05 μA IR at 49.6 V prevents loading of high-impedance sensor outputs (<1 nA error current). |
Use Scenario: Level-shifting and protecting analog front-ends in 4–20 mA loop-powered transmitters. IC Role / Device Role / Timing Role: Clamps fault voltages on current-loop terminals to prevent damage to isolators or DACs. Use Value: SOD323 package fits within 2.0 mm board spacing constraints common in DIN-rail modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5262BS | Same 62 V nominal VZ but ±5 % tolerance (B-grade); 200 Ω rdif; SOD-323 package | Higher regulation uncertainty (±3.1 V) limits use in precision feedback; acceptable for coarse clamping | Select when cost sensitivity outweighs regulation accuracy and thermal performance is secondary |
| Vishay BZX384-C62 | 62 V nominal VZ with ±5 % tolerance; 450 Ω rdif; identical SOD323 package and 300 mW Ptot | Loose tolerance increases output variance; higher rdif degrades load regulation in dynamic circuits | Choose only for non-critical voltage thresholds where 58–66 V range is acceptable |
Compared with MMBZ5262BS and BZX384-C62, BZX384-A62X provides tighter regulation (±0.62 V vs ±3.1 V), lower impedance (150 Ω vs 200–450 Ω), and superior thermal coupling-making it optimal for precision references and high-reliability clamping where parameter stability matters.
Availability
BZX384-A62X is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and IoT sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX384-A62X 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for industrial, consumer, and automotive markets.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage reference and transient suppression in compact, thermally constrained PCB layouts.
FAQ
What is the maximum continuous power dissipation for BZX384-A62X at 85 °C ambient?
At Tamb = 85 °C, derating applies linearly from 300 mW at 25 °C using Rth(j–a) = 415 K/W. Junction temperature must stay ≤150 °C, so max Ptot = (150 − 85) °C / 415 K/W = 157 mW. This assumes standard FR4 mounting per datasheet condition [2].
Can BZX384-A62X be used in place of a 62 V Zener with ±2 % tolerance?
Yes-its ±1 % tolerance (61.38–62.62 V) fully satisfies ±2 % (60.76–63.24 V) requirements. However, its lower differential resistance (150 Ω vs ~200 Ω for ±2 % parts) improves load regulation, making it a functional and performance upgrade.
How is polarity identified on the BZX384-A62X SOD323 package?
A molded bar on the top surface marks the cathode (Pin 1). When viewed with marking bar on the left, Pin 1 is leftmost and Pin 2 (anode) is rightmost-matching the simplified outline in Table 2 of the datasheet and standard SOD323 orientation conventions.
Does BZX384-A62X meet automotive qualification standards?
No-this part is non-automotive qualified per Revision 4 (January 2023) datasheet. Nexperia explicitly states "Products changed to non-automotive qualification" and directs users to their website for automotive (-Q) alternatives. It is rated for industrial temperature range only.
BZX384-A62X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 140 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 43.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A62X FAQ
1.How can I place an order for BZX384-A62X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A62X 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 BZX384-A62X reliable?
The price and inventory of BZX384-A62X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A62X is usually 5 days.
3.What payment methods are accepted for BZX384-A62X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A62X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A62X?
BZX384-A62X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A62X 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 BZX384-A62X?
For technical support, including BZX384-A62X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A62X requirements.
6.How does Aetrix verify that BZX384-A62X is sourced from the original manufacturer or authorized distributors?
All BZX384-A62X 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 BZX384-A62X meets industry standards.
7.What is the process for return or replacement of BZX384-A62X?
All BZX384-A62X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A62X, 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 BZX384-A62X part is unused and in its original packaging.
Return procedure for BZX384-A62X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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