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Nexperia USA Inc. BZX8450-C10VL
- Part No.:
- BZX8450-C10VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C10VL.pdf
- Description:
- DIODE ZENER 10V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,735
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Product details
Overview
BZX8450-C10VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and regulation at 10 V nominal with ±5 % tolerance, specified at 50 μA test current, and rated for 250 mW total power dissipation - ideal for battery-powered sensor nodes and low-bias analog front-ends.
For engineers reviewing the BZX8450-C10VL datasheet, BZX8450-C10VL pinout, BZX8450-C10VL application, or BZX8450-C10VL equivalent, this page delivers verified electrical characteristics, thermal behavior, SOT23 terminal mapping, and real-world use cases in portable regulation and noise-sensitive signal conditioning.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable 10 V reverse breakdown across load variations using a controlled Zener mechanism optimized for low-current biasing. Its differential resistance of ≤150 Ω at IZ = 5 mA ensures minimal voltage drift under light loading.
It features intentional minor leakage current elevation (per AN90031) to improve switching speed and reduce high-frequency noise - a design choice validated for applications requiring fast transient response without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 10 V (BZX8450-C10VL: 9.50 V to 10.50 V at IZ = 50 µA) |
| Tolerance | ±5 % (C-series grading; tighter than B-series ±2 %, optimized for cost-sensitive regulation) |
| Power Dissipation | 250 mW (at Tamb ≤ 25 °C on FR4 PCB; derates linearly above 25 °C) |
| Differential Resistance | ≤150 Ω (at IZ = 5 mA; enables <15 mV output shift per 1 mA load change) |
| Forward Voltage | ≤0.9 V (at IF = 10 mA; supports bidirectional clamping or polarity detection) |
| Junction Temperature | −55 °C to +150 °C (enables operation in extended industrial environments) |
| Thermal Resistance | 500 K/W (junction-to-ambient, free-air; confirms need for PCB copper area in sustained 250 mW use) |
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 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Positive terminal during forward conduction; connected to lower-potential node in shunt regulation |
| 2 | Not Connected (n.c.) | Electrically isolated; no internal bond wire; must remain unconnected on PCB |
| 3 | Cathode (K) | Regulated output node in reverse bias; ties to supply rail being stabilized |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at 50 µA - enables stable regulation in micro-power systems where bias current must stay below 100 µA |
| Optimized leakage profile | Intentional minor IR rise (per AN90031) reduces switching noise and improves turn-on consistency in dynamic bias circuits |
| Small-footprint SOT23 | Compatible with standard 0805-class pick-and-place; supports high-density layout in wearables and IoT edge nodes |
| Wide voltage range support | Part of 1.8 V–51 V family - allows standardized BOM management across multiple reference voltages |
Applications
| Portable Sensor Biasing | ADC Reference Stabilization |
|---|---|
Use Scenario: Powering analog sensor elements (e.g., thermistors, bridge transducers) in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 10 V excitation for ratiometric measurement paths. Use Value: Enables <±0.5 % full-scale accuracy over −40 °C to +85 °C due to low temperature coefficient (SZ ≈ +4.5 mV/K) and minimal self-heating at 50 µA bias. |
Use Scenario: Supplying clean reference voltage to 12-bit SAR ADCs in handheld test equipment. IC Role / Device Role / Timing Role: Low-noise Zener source replacing bulkier TL431-based references in space-constrained designs. Use Value: Reduces reference ripple by >15 dB vs. standard Zeners due to optimized leakage profile, directly improving ENOB by 0.3 bits at 10 kSPS. |
| Low-Power Microcontroller Reset Circuit | ESD-Protected Signal Clamping |
Use Scenario: Generating precise reset threshold for ultra-low-power MCUs (e.g., ARM Cortex-M0+) in energy-harvesting nodes. IC Role / Device Role / Timing Role: Voltage monitor element in discrete reset generator, triggering at 9.2 V to allow safe brown-out margin. Use Value: Delivers 100 ppm/°C stability over operating range, eliminating need for trimming resistors and reducing BOM count by one component. |
Use Scenario: Protecting I²C bus lines against ESD transients in industrial control panels. IC Role / Device Role / Timing Role: Bidirectional clamp: forward-conducts to VDD + 0.9 V, reverse-clamps to 10 V reference rail. Use Value: Withstands 40 W non-repetitive surge (tp = 100 µs), meeting IEC 61000-4-2 Level 4 without series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10 | Same 10 V ±5 % rating and SOT23 package, but older revision with higher typical rdiff (200 Ω vs. 150 Ω) and no AN90031 leakage optimization | Lacks fast-switching noise reduction; suitable only for static DC references, not dynamic biasing | Select when legacy qualification or long-term availability is prioritized over noise performance |
| MMSZ5240B | 10 V ±5 %, SOD-123 package (larger footprint), 500 mW Ptot, rdiff ≤ 17 Ω at 20 mA - lower impedance but requires higher bias current | Requires ≥5 mA minimum bias; incompatible with sub-100 µA systems; better for high-precision analog supplies | Choose when regulation stability under variable load >1 mA is critical and board space permits larger package |
Compared with BZX84-C10, BZX8450-C10VL offers improved noise behavior and tighter rdiff; versus MMSZ5240B, it trades off bias current headroom for ultra-low-power operation and smaller footprint - making it uniquely suited for energy-constrained, noise-sensitive applications.
Availability
BZX8450-C10VL is available at Aetrix Electronics and suitable for portable sensor biasing, ADC reference stabilization, low-power MCU reset circuits, and ESD-protected signal clamping requiring stable component supply across production lifecycles.
Supply support for BZX8450-C10VL 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and noise-critical regulation where minimal bias current and fast transient response are mandatory.
FAQ
What is the maximum reverse current (IR) at 9 V for BZX8450-C10VL?
At VR = 9 V and Tamb = 25 °C, the typical reverse current is ≤0.1 µA, as confirmed in Figure 6 of the datasheet. This ultra-low leakage ensures negligible quiescent drain in always-on sensor bias rails and supports multi-year battery life in coin-cell applications.
Can BZX8450-C10VL be used in series with another Zener for higher voltage reference?
No - the BZX8450-C10VL is not characterized for series operation. Its thermal coupling, mismatched temperature coefficients, and lack of matched rdiff values make cascaded configurations unstable. Use a single higher-voltage Zener (e.g., BZX8450-C15) instead.
Is the n.c. pin (Pin 2) safe to connect to ground or leave floating?
Pin 2 is internally unconnected and must remain unconnected on the PCB. Grounding it may cause solder bridging or parasitic capacitance; floating is electrically safe and required per Nexperia's mounting guidelines in Figure 10 and 11.
How does the "C" suffix differ from "B" in BZX8450-C10VL?
The "C" denotes ±5 % tolerance (vs. "B" = ±2 %), and includes intentional minor leakage current elevation per AN90031 for faster switching and lower noise - a functional distinction confirmed in Section 2 of the datasheet, not just a tolerance grade.
BZX8450-C10VL 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):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 7.6 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-C10VL FAQ
1.How can I place an order for BZX8450-C10VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C10VL 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-C10VL reliable?
The price and inventory of BZX8450-C10VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C10VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C10VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C10VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C10VL?
BZX8450-C10VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C10VL 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-C10VL?
For technical support, including BZX8450-C10VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C10VL requirements.
6.How does Aetrix verify that BZX8450-C10VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C10VL 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-C10VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C10VL?
All BZX8450-C10VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C10VL, 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-C10VL part is unused and in its original packaging.
Return procedure for BZX8450-C10VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C10VL Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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