Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Nexperia USA Inc. BZX8450-B10-QR

Name: BZX8450-B10-QR
Brand: Nexperia USA Inc.
SKU: BZX8450-B10-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BZX8450-B10-QR

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX8450-B10-QR.pdf

Description:: DIODE ZENER 10V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,670

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BZX8450-B10-QR from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, providing 10 V nominal regulation at 50 µA test current with ±2 % tolerance, 250 mW power dissipation, and AEC-Q101 qualification for automotive bias and reference applications.

For engineers reviewing the BZX8450-B10-QR datasheet, BZX8450-B10-QR pinout, BZX8450-B10-QR application, or BZX8450-B10-QR equivalent, this page delivers verified electrical characteristics, thermal behavior, automotive-grade reliability data, and precise SOT23 terminal mapping - all critical for low-power voltage reference design in battery-powered and automotive subsystems.

Technical Context

This device operates as a two-terminal shunt voltage reference, maintaining stable 10 V output across load variations by conducting reverse current above its breakdown threshold. Its specified 50 µA test current enables ultra-low quiescent operation ideal for standby circuits and sensor biasing.

Designed with intentional minor leakage optimization (per AN90031), it achieves faster switching transients and reduced noise versus standard Zeners. Thermal resistance of 330 K/W (junction-to-solder-point) supports reliable operation on FR4 PCBs under ambient temperatures up to +150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	10 V at I_Z = 50 µA - defines precise reference point for low-bias analog circuits
Voltage Tolerance	±2 % - ensures tight regulation without post-calibration in production systems
Power Dissipation	250 mW at T_amb ≤ 25 °C - limits thermal rise in compact SMT layouts
Differential Resistance	150 Ω max at I_Z = 5 mA - determines output impedance and load regulation error
Reverse Current	0.1 µA max at V_R = 7.6 V - guarantees minimal leakage in high-impedance bias networks
Forward Voltage	0.9 V max at I_F = 10 mA - defines conduction loss when used in series protection configurations
Junction Temperature	150 °C max - enables operation in under-hood automotive environments

Pinout & Package

Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified per AEC-Q101 for automotive use.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connects to lower-potential node; reverse-biased during regulation
2	Not Connected (n.c.)	Internally unconnected; must remain floating or grounded per layout guidelines
3	Cathode (K)	Connects to higher-potential node; carries regulated reverse current

Key Features

Feature	Design Value
Low test current operation	Specified at 50 µA - reduces system standby power in battery-backed sensors and microcontrollers
Optimized leakage profile	Intentional minor rise per AN90031 - improves transient response and lowers broadband noise in reference paths
AEC-Q101 qualification	Qualified for automotive applications - eliminates need for additional reliability screening in ADAS and body control modules
Thermal performance	R_th(j-sp) = 330 K/W - enables direct thermal coupling to PCB copper for stable regulation under temperature cycling

Applications

Automotive Sensor Biasing

Portable Device Reference

Use Scenario: Providing stable 10 V bias to MEMS pressure sensors in engine control units.

IC Role / Device Role / Timing Role: Shunt voltage reference regulating sensor excitation voltage.

Use Value: ±2 % tolerance and AEC-Q101 qualification ensure consistent sensor output across −40 °C to +125 °C operating range.

Use Scenario: Supplying precision reference for ADC in handheld medical glucose meters.

IC Role / Device Role / Timing Role: Low-current Zener reference establishing analog input scaling.

Use Value: 50 µA test current minimizes battery drain while maintaining 10 V accuracy for 12-bit conversion linearity.

Industrial PLC Input Conditioning

IoT Node Voltage Clamping

Use Scenario: Stabilizing 10 V rail for optocoupler input stages in programmable logic controllers.

IC Role / Device Role / Timing Role: Voltage clamp and reference source for isolated digital input circuitry.

Use Value: 250 mW dissipation and 150 °C junction rating support continuous operation in enclosed industrial enclosures.

Use Scenario: Protecting MCU GPIO pins from overvoltage in LPWAN edge nodes powered by coin cells.

IC Role / Device Role / Timing Role: Low-leakage shunt clamp limiting input voltage to 10 V.

Use Value: 0.1 µA max reverse current at 7.6 V prevents measurable battery discharge during sleep mode.

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-Q	±5 % tolerance, higher leakage (0.1 µA vs. 0.05 µA at VR = 7.6 V), same SOT23 package	Acceptable where cost sensitivity outweighs precision; not recommended for high-accuracy ADC references	Select for non-critical biasing where tighter tolerance is unnecessary and BOM cost reduction is prioritized
MMSZ4686T1G	10 V nominal, ±5 %, 500 mW P_tot, DO-213AC package - larger footprint, higher power handling	Suitable for higher-current regulation but incompatible with space-constrained SOT23 layouts	Choose only when >250 mW dissipation is required and board area permits larger package

Compared with BZX8450-B10-QR, BZX84-C10-Q trades precision for cost in non-automotive contexts, while MMSZ4686T1G offers higher power at the expense of PCB real estate and automotive qualification - making the BZX8450-B10-QR optimal for space-limited, AEC-Q101–compliant 10 V reference designs.

Availability

BZX8450-B10-QR is available at Aetrix Electronics and suitable for automotive sensor biasing, portable medical device references, and industrial PLC input conditioning requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BZX8450-B10-QR 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 components and energy-efficient solutions.

The BZX8450-Q series belongs to Nexperia's automotive-grade Zener regulator portfolio, engineered specifically for low-current, high-stability voltage reference and clamping in harsh-environment electronics.

FAQ

What is the maximum reverse voltage before breakdown for BZX8450-B10-QR?

The nominal Zener voltage is 10 V, with guaranteed minimum and maximum values of 9.50 V and 10.50 V respectively at I_Z = 50 µA. Breakdown occurs within this band; operation below 9.50 V ensures no significant reverse conduction, preserving low-leakage behavior in standby modes.

Can BZX8450-B10-QR be used in parallel for higher current capability?

No - Zener diodes exhibit manufacturing spread in breakdown voltage, causing current hogging and thermal runaway when paralleled. For higher current, use a single higher-power Zener or an active shunt regulator; the BZX8450-B10-QR is rated for ≤200 mA forward current and 250 mW total dissipation.

Is the n.c. pin (Pin 2) safe to connect to ground or leave floating?

Pin 2 is internally not connected and must remain electrically floating. Connecting it to ground or any potential may cause unpredictable leakage paths or violate internal die isolation; Nexperia's SOT23 layout requires Pin 2 to be unbonded and unconnected in PCB routing.

How does the BZX8450-B10-QR's 50 µA test current impact circuit design?

Designing around 50 µA ensures minimal loading on bias sources - for example, a 1 MΩ resistor from 15 V yields ~10 µA, well below the test current, so regulation will be weak; a 100 kΩ resistor provides ~50 µA and achieves full specification compliance, enabling accurate low-power reference generation.

BZX8450-B10-QR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX8450-Q

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 10 V

Tolerance:: ±2%

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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX8450-B10-QR FAQ

1.How can I place an order for BZX8450-B10-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX8450-B10-QR 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-B10-QR reliable?

The price and inventory of BZX8450-B10-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-B10-QR is usually 5 days.

3.What payment methods are accepted for BZX8450-B10-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B10-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX8450-B10-QR?

BZX8450-B10-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX8450-B10-QR 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-B10-QR?

For technical support, including BZX8450-B10-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B10-QR requirements.

6.How does Aetrix verify that BZX8450-B10-QR is sourced from the original manufacturer or authorized distributors?

All BZX8450-B10-QR 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-B10-QR meets industry standards.

7.What is the process for return or replacement of BZX8450-B10-QR?

All BZX8450-B10-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B10-QR, 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-B10-QR part is unused and in its original packaging.

Return procedure for BZX8450-B10-QR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…