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Nexperia USA Inc. BZX8450-C30VL
- Part No.:
- BZX8450-C30VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C30VL.pdf
- Description:
- DIODE ZENER 30V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,036
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Product details
Overview
BZX8450-C30VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and biasing in ultra-low-power circuits. It delivers a nominal 30 V regulation at 50 µA test current, with ±5 % tolerance, 300 Ω differential resistance at 5 mA, and 0.05 µA reverse leakage at rated voltage - optimized for battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the BZX8450-C30VL datasheet, BZX8450-C30VL pinout, BZX8450-C30VL application, or BZX8450-C30VL equivalent, this page provides verified electrical characteristics, thermal behavior, SOT23 terminal mapping, and real-world use cases in low-bias analog signal chains and microcontroller reset supervision.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across its cathode-anode terminals under reverse-bias conditions. Its regulation is defined at IZ = 50 µA, enabling accurate reference generation in circuits where quiescent current must remain below 100 µA.
The BZX8450-C30VL belongs to the "C" tolerance series (±5 %), features intentional minor leakage rise per AN90031 for improved switching noise suppression, and exhibits a positive temperature coefficient of +24.4 mV/K at 30 V, supporting predictable thermal drift compensation in precision references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 30 V at IZ = 50 µA - defines primary regulation point for low-current bias networks |
| Tolerance | ±5 % - supports cost-sensitive designs where tight regulation is not required |
| Differential Resistance | 300 Ω at IZ = 5 mA - determines output impedance and load regulation error in reference circuits |
| Reverse Leakage Current | 0.05 µA at VR = 22.8 V - enables nanoampere-level standby power in always-on monitoring systems |
| Forward Voltage | 0.9 V at IF = 10 mA - ensures minimal forward conduction loss when used bidirectionally or in protection roles |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous power handling in standard SMT layouts |
| Junction-to-Ambient Thermal Resistance | 500 K/W - informs derating requirements for operation above ambient temperature |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with three terminals: anode (Pin 1), not connected (Pin 2), and cathode (Pin 3). Pin 2 is internally unconnected and must remain floating in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Reverse-bias input node; connects to lower-potential side of regulated circuit |
| 2 | Not Connected | No internal bond wire; must be left unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode | Regulated output node; connects to higher-potential side and serves as voltage reference point |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Rated at 50 µA - enables stable regulation in micropower systems where bias current is constrained |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise in sensitive analog front-ends |
| Thermal stability | +24.4 mV/K tempco at 30 V - allows predictable drift modeling in temperature-compensated references |
| Small-footprint packaging | SOT23 footprint compatible with automated placement and reflow - supports high-density portable PCBs |
| Robust surge rating | 40 W non-repetitive peak reverse power (100 µs pulse) - withstands transient overvoltage events |
Applications
| Portable Sensor Biasing | Microcontroller Reset Supervision |
|---|---|
Use Scenario: Providing stable 30 V reference for analog front-end amplifiers in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise gain-setting node for op-amp biasing network. Use Value: Enables <1 µA total quiescent current in sensor signal chain while maintaining ±1.5 % reference accuracy across −40 °C to +85 °C. |
Use Scenario: Monitoring 3.3 V supply rail in ARM Cortex-M0+ MCU systems to trigger controlled reset during brownout. IC Role / Device Role / Timing Role: Zener-based threshold detector feeding comparator input for reset assertion logic. Use Value: Delivers sub-100 ns response to voltage sag due to low capacitance (29.4 pF) and fast leakage-controlled turn-on. |
| Low-Power ADC Reference | LED Driver Current Setpoint |
Use Scenario: Supplying reference voltage to 12-bit SAR ADC in handheld medical diagnostic device powered by coin cell. IC Role / Device Role / Timing Role: Precision shunt regulator defining full-scale input range for ratiometric conversion. Use Value: Maintains <0.5 LSB integral nonlinearity contribution over 10-year shelf life due to stable Zener breakdown mechanism. |
Use Scenario: Setting constant current for indicator LED in industrial HMI panel operating from 36 V DC bus. IC Role / Device Role / Timing Role: Voltage clamp regulating gate drive node of external MOSFET current source. Use Value: Ensures ±3 % LED brightness consistency across 10:1 input voltage variation without active feedback loop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5262BS-7-F (Diodes Inc.) | 30 V, ±5 %, 150 mW Ptot, 700 Ω rdiff at 20 mA | Higher power dissipation limit but less stable at microamp bias currents | Select when higher current drive (>5 mA) is needed; avoid for <100 µA bias designs |
| BZX84-C30 (Nexperia) | Same 30 V/±5 % spec but older revision (Rev. 2), no AN90031 leakage optimization | Higher broadband noise floor in low-current operation | Prefer BZX8450-C30VL for noise-critical analog sensing; BZX84-C30 acceptable for digital threshold detection |
Compared with MMBZ5262BS-7-F and BZX84-C30, the BZX8450-C30VL uniquely balances ultra-low bias current operation (50 µA), low-noise leakage tuning, and SOT23 thermal performance - making it optimal for next-generation portable instrumentation where power, noise, and size are co-constrained.
Availability
BZX8450-C30VL is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset supervision, low-power ADC reference, and LED driver current setpoint applications requiring stable component supply, long-term parametric consistency, and RoHS-compliant SMT assembly.
Supply support for BZX8450-C30VL 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-enhancing components, delivering high-performance, reliable, and sustainable solutions 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-operated and energy-harvesting systems.
FAQ
What is the maximum continuous reverse voltage the BZX8450-C30VL can regulate without degradation?
The BZX8450-C30VL is rated for continuous reverse operation up to its nominal Zener voltage of 30 V (with ±5 % tolerance), provided power dissipation remains within 250 mW at Tamb ≤ 25 °C. Exceeding 30 V risks irreversible breakdown unless limited by series resistance to maintain IZ within safe limits per Table 5 limiting values.
Can Pin 2 (n.c.) be grounded or tied to a signal trace?
No - Pin 2 is internally not connected and must remain electrically floating on the PCB. Grounding or routing signals to this terminal introduces parasitic capacitance and potential coupling paths that degrade noise performance and may cause unexpected regulation instability, especially in high-impedance reference nodes.
How does the +24.4 mV/K temperature coefficient affect long-term reference stability?
The +24.4 mV/K coefficient means the Zener voltage increases by 24.4 mV per Kelvin rise in junction temperature. Over a −40 °C to +125 °C range, this produces ~4.0 V drift - so system-level compensation (e.g., complementary tempco components or software calibration) is required for applications demanding <0.1 % reference stability across temperature.
Is the BZX8450-C30VL suitable for use in automotive environments?
No - the BZX8450-C30VL is not AEC-Q200 qualified and lacks automotive-grade screening, extended temperature validation, or guaranteed PPAP documentation. Nexperia explicitly states non-automotive qualification in Section 14 of the datasheet; use only in commercial or industrial applications with ambient operating range −55 °C to +150 °C.
BZX8450-C30VL 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:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 22.8 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-C30VL FAQ
1.How can I place an order for BZX8450-C30VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C30VL 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-C30VL reliable?
The price and inventory of BZX8450-C30VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C30VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C30VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C30VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C30VL?
BZX8450-C30VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C30VL 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-C30VL?
For technical support, including BZX8450-C30VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C30VL requirements.
6.How does Aetrix verify that BZX8450-C30VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C30VL 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-C30VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C30VL?
All BZX8450-C30VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C30VL, 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-C30VL part is unused and in its original packaging.
Return procedure for BZX8450-C30VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C30VL Tags
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MM5Z5V1ST1G
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