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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX8450-C13VL

Name: BZX8450-C13VL
Brand: Nexperia USA Inc.
SKU: BZX8450-C13VL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX8450-C13VL

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BZX8450-C13VL.pdf

Description:: DIODE ZENER 13V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:6,610

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Product details

Overview

BZX8450-C13VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and low-power biasing at 13 V nominal working voltage (12.35–13.65 V), ±5 % tolerance, with 170 Ω differential resistance at 5 mA and 9.8 V reverse breakdown voltage at 50 µA test current. It serves in portable battery-powered sensor interfaces and microcontroller reset circuits requiring stable low-current regulation.

For engineers reviewing the BZX8450-C13VL datasheet, BZX8450-C13VL pinout, BZX8450-C13VL application, or BZX8450-C13VL equivalent, this page delivers verified electrical characteristics, thermal behavior, SOT23 terminal mapping, and real-world use cases for low-bias analog signal conditioning and power rail clamping.

Technical Context

This device operates as a two-terminal shunt regulator, maintaining stable reverse-biased voltage across its cathode-anode terminals under controlled current conditions. Its specified 50 µA test current enables ultra-low quiescent operation ideal for energy-constrained systems.

The intentional minor rise in leakage current-characteristic of the "C" series-optimizes switching speed and reduces noise in voltage-reference paths, per Application Note AN90031. Thermal resistance from junction to ambient is 500 K/W on standard FR4 PCB, limiting continuous dissipation to 250 mW at ≤25 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	13 V (min 12.35 V, max 13.65 V at I_Z = 50 µA); defines precise clamping threshold for 3.3 V/5 V logic supply monitoring.
Differential Resistance	170 Ω (max at I_Z = 5 mA); determines output impedance and voltage regulation sensitivity to load current changes.
Power Dissipation	250 mW (T_amb ≤ 25 °C on FR4 PCB); sets maximum continuous DC power handling without derating.
Forward Voltage	0.9 V (max at I_F = 10 mA); ensures minimal forward conduction loss when used bidirectionally or in protection roles.
Reverse Current	0.05 µA (max at V_R = 9.8 V); guarantees negligible standby leakage in battery-critical applications.
Temperature Coefficient	+7.0 mV/K (typical); quantifies voltage drift over temperature-critical for accuracy in industrial sensor front-ends.
Diode Capacitance	80 pF (max at f = 1 MHz, V_R = 0 V); impacts high-frequency noise filtering and AC coupling performance.

Pinout & Package

SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided copper FR4 mounting.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Positive terminal for forward conduction; connects to lower-potential node in shunt regulation configuration.
2	Not Connected (n.c.)	Internally unconnected; must remain floating-no PCB trace or solder joint required.
3	Cathode (K)	Regulated output node in reverse bias; ties to voltage rail being stabilized or clamped.

Key Features

Feature	Design Value
Low-test-current specification	Rated at 50 µA-enables accurate voltage setting in nanoampere-bias circuits like comparator references.
Optimized leakage profile	Intentional minor IR rise (C-series) improves transient response and reduces broadband noise in reference paths.
Tight voltage tolerance	±5 % (C-grade) provides predictable clamping without post-production trimming in cost-sensitive designs.
Thermal robustness	150 °C max junction temperature supports operation in sealed enclosures or near heat-generating ICs.

Applications

Microcontroller Reset Circuit

Portable Sensor Biasing

Use Scenario: Generating a clean, temperature-stable 13 V reference to trigger a supervisor IC's reset threshold during brown-out events.

IC Role / Device Role / Timing Role: Shunt voltage reference providing precise, low-current clamping at the supervisor input pin.

Use Value: Enables deterministic reset assertion within ±5 % voltage window across −40 °C to +85 °C, minimizing false triggers.

Use Scenario: Biasing a low-power MEMS pressure sensor's analog front-end with minimal quiescent current draw.

IC Role / Device Role / Timing Role: Low-leakage Zener source delivering stable 13 V excitation to sensor bridge elements.

Use Value: Achieves <0.05 µA reverse current at 9.8 V, extending coin-cell battery life beyond 5 years in IoT edge nodes.

USB-C Power Negotiation Clamp

Industrial Analog Signal Conditioning

Use Scenario: Clamping CC line voltage during USB-C PD communication to prevent overvoltage damage to controller GPIO.

IC Role / Device Role / Timing Role: Fast-switching shunt clamp absorbing transient surges while maintaining tight 13 V ceiling.

Use Value: Leverages C-series optimized leakage to reduce EMI and improve signal integrity on high-speed bus lines.

Use Scenario: Stabilizing reference voltage for a 12-bit SAR ADC in a programmable logic controller analog input module.

IC Role / Device Role / Timing Role: Precision voltage reference establishing ADC full-scale range with <±0.5 % error contribution.

Use Value: 7.0 mV/K temperature coefficient allows calibration compensation, achieving <±2 LSB total error over 0–70 °C.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C13	Same 13 V nominal, ±5 %, but rated at 300 mW P_tot and uses older process with higher r_diff (200 Ω).	Higher power margin suits legacy board redesigns where thermal layout permits larger footprint.	Select when existing design requires identical marking compatibility and higher surge tolerance.
MMSZ5243B	13 V, ±5 %, but specified at 20 mA test current and exhibits 30 Ω r_diff; no intentional leakage optimization.	Better regulation under moderate load but higher quiescent current limits use in sub-µA systems.	Prefer for higher-current analog rails where low dynamic impedance outweighs battery-life concerns.

Compared with BZX8450-C13VL, BZX84-C13 offers higher power headroom but less thermal efficiency in compact layouts, while MMSZ5243B delivers tighter regulation under load at the expense of standby leakage-making the BZX8450-C13VL optimal for ultra-low-power, noise-sensitive voltage references.

Availability

BZX8450-C13VL is available at Aetrix Electronics and suitable for portable medical sensors, industrial analog I/O modules, and USB-C interface protection requiring stable component supply with guaranteed long-term continuity.

Supply support for BZX8450-C13VL 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 and industrial-grade components.

The BZX8450 series belongs to Nexperia's low-current Zener regulator product line, engineered specifically for battery-powered and space-constrained applications demanding precision voltage reference with minimal quiescent consumption.

FAQ

What is the maximum reverse voltage before breakdown for BZX8450-C13VL?

The BZX8450-C13VL has a nominal Zener voltage of 13 V, with guaranteed minimum and maximum values of 12.35 V and 13.65 V respectively at 50 µA test current. Breakdown occurs within this band-not at a fixed value-and is defined by the V_Z specification, not an absolute "maximum reverse voltage" limit.

Can BZX8450-C13VL be used in forward-biased mode as a regular diode?

Yes-it exhibits a maximum forward voltage of 0.9 V at 10 mA, making it suitable for low-voltage clamping or polarity protection. However, its primary design intent and characterization are for reverse-biased Zener operation; forward parameters are secondary and not optimized for rectification duty cycles.

Is pin 2 truly unconnected, or does it serve a mechanical function?

Pin 2 is electrically unconnected (n.c.) per Nexperia's official pinning diagram and internal construction. It serves only as a mechanical support leg in the SOT23 mold compound and must remain unconnected on the PCB-no trace, pad, or solder joint should be applied to it.

How does the "C" suffix differ from "B" in the BZX8450 series?

The "C" suffix denotes a version with intentionally elevated leakage current versus the "B" grade, enabling faster switching and reduced noise in voltage-reference applications-as documented in Application Note AN90031. This trade-off improves dynamic performance at the cost of slightly higher standby current in ultra-low-power designs.

BZX8450-C13VL 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):: 13 V

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 30 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 9.8 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-C13VL FAQ

1.How can I place an order for BZX8450-C13VL through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX8450-C13VL 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-C13VL reliable?

The price and inventory of BZX8450-C13VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C13VL is usually 5 days.

3.What payment methods are accepted for BZX8450-C13VL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C13VL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX8450-C13VL?

BZX8450-C13VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX8450-C13VL 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-C13VL?

For technical support, including BZX8450-C13VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C13VL requirements.

6.How does Aetrix verify that BZX8450-C13VL is sourced from the original manufacturer or authorized distributors?

All BZX8450-C13VL 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-C13VL meets industry standards.

7.What is the process for return or replacement of BZX8450-C13VL?

All BZX8450-C13VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C13VL, 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-C13VL part is unused and in its original packaging.

Return procedure for BZX8450-C13VL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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