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Nexperia USA Inc. BZX8450-C62VL
- Part No.:
- BZX8450-C62VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C62VL.pdf
- Description:
- DIODE ZENER 62V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,338
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Product details
Overview
BZX8450-C62VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 62 V regulation at 50 µA test current, with ±5 % tolerance, 250 mW total power dissipation, and 400 Ω typical differential resistance at 2 mA - enabling stable operation in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the BZX8450-C62VL datasheet, BZX8450-C62VL pinout, BZX8450-C62VL application, or BZX8450-C62VL equivalent, key selection criteria include its low 50 µA regulation test current, intentional leakage optimization for noise reduction (per AN90031), SOT23 footprint compatibility, and thermal resistance of 330 K/W to solder point - critical for compact, thermally constrained designs.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable reverse-bias voltage across its cathode-anode terminals under varying load conditions. Its regulation is specified at IZ = 50 µA - significantly lower than standard Zeners - making it suitable for microamp-level bias networks where quiescent current must be minimized.
The BZX8450-C62VL belongs to the "C" tolerance series (±5 %), features an intentionally elevated reverse leakage current versus "B" variants to improve switching speed and reduce high-frequency noise, and exhibits a positive temperature coefficient of +12.5 mV/K near 62 V - confirmed in Table 8 for C-series devices above 36 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 62 V at IZ = 50 µA - defines precise reference point for low-current biasing |
| Tolerance | ±5 % - supports cost-sensitive applications where tighter regulation is not required |
| Differential Resistance | 400 Ω max at IZ = 2 mA - determines output impedance and load regulation error |
| Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous power handling in standard layout |
| Forward Voltage | 0.9 V max at IF = 10 mA - defines conduction threshold in forward direction |
| Reverse Current | 0.05 µA max at VR = 49.6 V - specifies leakage below regulation knee, critical for standby power |
| Thermal Resistance | 330 K/W junction-to-solder-point - enables accurate thermal modeling when mounted on PCB cathode pad |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided FR4 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; forward conduction path when biased positively relative to cathode |
| 2 | Not Connected (n.c.) | Internally unconnected terminal; must remain floating - no PCB trace or thermal pad connection |
| 3 | Cathode (K) | Reference terminal for Zener breakdown; connects to regulated voltage node and provides primary thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| Low test current regulation | Specified at 50 µA - enables use in nanoamp-to-microamp bias chains without loading error |
| Optimized leakage profile | Intentional minor rise in IR vs. B-series - reduces switching transients and broadband noise per AN90031 |
| Thermal performance | 330 K/W Rth(j-sp) - allows accurate junction temperature estimation using cathode pad temperature |
| Package compatibility | SOT23 footprint - supports automated placement and reflow in high-density consumer and industrial PCBs |
Applications
| Portable Sensor Biasing | Low-Power Reference Supply |
|---|---|
Use Scenario: Powering analog front-end circuitry in battery-operated environmental sensors (e.g., CO₂, humidity) with multi-year runtime requirements. IC Role / Device Role / Timing Role: Provides stable 62 V reference for high-impedance op-amp gain-setting networks and ADC reference dividers. Use Value: 50 µA regulation current minimizes battery drain while maintaining ±5 % accuracy over temperature - extending operational life without compromising measurement fidelity. |
Use Scenario: Generating a clean, low-noise auxiliary supply rail for RF front-end biasing in IoT transceivers. IC Role / Device Role / Timing Role: Acts as shunt regulator for LDO pre-biasing, suppressing ripple and transient coupling into sensitive VCO control lines. Use Value: Optimized leakage profile reduces broadband noise injection into RF sections, improving phase noise by up to 3 dB compared to standard Zeners. |
| Industrial Signal Conditioning | Medical Instrumentation Reference |
Use Scenario: Providing isolated voltage clamping and reference stabilization in 4–20 mA loop-powered field transmitters. IC Role / Device Role / Timing Role: Regulates loop-supply-derived bias rails and protects input amplifiers against overvoltage transients. Use Value: 250 mW power rating and 150 °C max junction temperature support reliable operation in hot enclosures without derating. |
Use Scenario: Establishing calibrated excitation voltage for precision strain-gauge bridges in portable diagnostic devices. IC Role / Device Role / Timing Role: Delivers stable 62 V excitation with minimal drift, enabling sub-0.1 % full-scale accuracy in bridge measurements. Use Value: Positive temperature coefficient (+12.5 mV/K) compensates for typical gauge resistance drift, reducing system-level calibration burden. |
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 MMBZ5262BLT1G | 62 V, ±5 %, 200 mW, SOT23 - lower power rating and higher rdiff (500 Ω) | Less suitable for sustained 2 mA loads due to thermal limits; requires larger copper area for same ambient temp | Select when board space is identical but power budget is <200 mW and noise sensitivity is low |
| Vishay BZX84-C62-TP | 62 V, ±5 %, 300 mW, SOT23 - higher Ptot, but no documented leakage optimization or AN90031 compliance | Higher power margin allows heavier loading, but lacks intentional noise-reduction design for RF-critical paths | Select when thermal headroom is priority and noise performance is secondary to regulation stability |
Compared with MMBZ5262BLT1G, BZX8450-C62VL offers 25 % higher power margin and lower dynamic impedance; versus BZX84-C62-TP, it trades 50 mW absolute rating for verified low-noise behavior in fast-switching analog systems.
Availability
BZX8450-C62VL is available at Aetrix Electronics and suitable for portable sensor biasing, low-power reference supply, and industrial signal conditioning requiring stable component supply with consistent parametric performance across production lots.
Supply support for BZX8450-C62VL 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for ultra-low-power voltage reference and biasing in battery-constrained and noise-sensitive applications.
FAQ
What is the maximum reverse voltage before breakdown for BZX8450-C62VL?
The nominal Zener voltage is 62 V at 50 µA test current, with a guaranteed range of 58.9 V to 65.1 V (±5 %). Breakdown begins gradually above ~55 V, but stable regulation occurs only within the specified 58.9–65.1 V window under defined current conditions per Table 8.
Can BZX8450-C62VL replace a standard 62 V Zener in existing designs?
Yes, if the existing design uses an SOT23-packaged 62 V Zener with ±5 % tolerance and operates below 250 mW. However, verify that the lower 50 µA test current does not cause regulation instability in high-impedance bias networks, and confirm thermal layout matches the 330 K/W junction-to-solder-point spec.
Why does BZX8450-C62VL specify regulation at 50 µA instead of 5 mA?
It is optimized for ultra-low-power systems where bias current must be minimized - such as energy-harvesting sensors or coin-cell devices. Regulation at 50 µA ensures usable voltage reference even when source current is limited to microamps, unlike conventional Zeners requiring milliamp-level test currents.
Is Pin 2 truly unused, or can it be grounded for thermal improvement?
Pin 2 is internally not connected (n.c.) per Table 2 and must remain electrically floating. Grounding or connecting it risks internal shorting or parametric shift. Thermal performance relies solely on Pin 3 (cathode) conduction to PCB; no thermal benefit is gained - and reliability is compromised - by contacting Pin 2.
BZX8450-C62VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±5%
- Power - Max:
- 250 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C62VL FAQ
1.How can I place an order for BZX8450-C62VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C62VL 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-C62VL reliable?
The price and inventory of BZX8450-C62VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C62VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C62VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C62VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C62VL?
BZX8450-C62VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C62VL 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-C62VL?
For technical support, including BZX8450-C62VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C62VL requirements.
6.How does Aetrix verify that BZX8450-C62VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C62VL 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-C62VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C62VL?
All BZX8450-C62VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C62VL, 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-C62VL part is unused and in its original packaging.
Return procedure for BZX8450-C62VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C62VL Tags
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MM5Z5V1ST1G
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