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

Nexperia USA Inc. BZX84-C10/DG/B4R

Name: BZX84-C10/DG/B4R
Brand: Nexperia USA Inc.
SKU: BZX84-C10/DG/B4R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-C10/DG/B4R

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-C10/DG/B4R.pdf

Description:: DIODE ZENER 10V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:5,860

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Product details

Overview

BZX84-C10/DG/B4R from Nexperia is a 10 V ±5% Zener diode in SOT23 package, rated for 300 mW power dissipation at 25 °C, with 5 µA maximum reverse leakage current at 7.5 V and 100 Ω typical dynamic impedance at 5 mA test current. It provides precise voltage reference in low-power regulator and overvoltage protection circuits for portable instrumentation.

For engineers reviewing the BZX84-C10/DG/B4R datasheet, BZX84-C10/DG/B4R pinout, BZX84-C10/DG/B4R application, or BZX84-C10/DG/B4R equivalent, key selection criteria include Zener voltage tolerance, power derating curve, temperature coefficient, and SOT23 thermal resistance under PCB layout constraints.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals. Its 10 V nominal Zener voltage is specified at 5 mA test current, with ±5% tolerance and −2.5 mV/°C temperature coefficient over −65 °C to +150 °C operating range.

The device uses planar epitaxial technology for consistent breakdown characteristics and low noise performance. Its 300 mW power rating applies only at 25 °C ambient; derating to zero at 150 °C junction temperature follows a linear 2.4 mW/°C slope.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	10 V ±5% at 5 mA - defines clamping level for voltage regulation and overvoltage protection
Power Dissipation (P_tot)	300 mW at T_amb = 25 °C - limits continuous current to ~30 mA before thermal shutdown
Dynamic Impedance (Z_ZT)	100 Ω typical at 5 mA - determines output voltage variation under load current changes
Reverse Leakage (I_R)	≤5 µA at 7.5 V - ensures minimal quiescent current in standby voltage reference circuits
Temperature Coefficient (TC)	−2.5 mV/°C - quantifies voltage drift per degree Celsius change in junction temperature
Package	SOT23 - surface-mount footprint compatible with automated assembly and 0.65 mm pitch PCB routing

Pinout & Package

SOT23-3 package with standard pin assignment: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Anode (tied internally to Pin 1). Thermal pad not present; junction-to-ambient thermal resistance is 400 K/W on FR-4 PCB with minimal copper.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode	Connected to lower-potential node; reverse-biased during Zener operation
Pin 2	Cathode	Connected to higher-potential node; voltage referenced to this terminal
Pin 3	Anode (internal tie)	Redundant anode connection for mechanical stability; electrically identical to Pin 1

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables direct replacement in 10 V reference designs without recalibration
Low 5 µA reverse leakage at 7.5 V	Minimizes standby power loss in battery-powered sensor nodes
100 Ω dynamic impedance at 5 mA	Supports ≤0.5% output voltage deviation across ±1 mA load variation
SOT23 package with 0.65 mm lead pitch	Compatible with standard pick-and-place equipment and reflow profiles

Applications

Portable Sensor Reference

USB Port Overvoltage Clamp

Use Scenario: Providing stable 10 V bias for analog front-end amplifiers in handheld gas detectors.

IC Role / Device Role / Timing Role: Voltage reference element establishing precision DC offset for ADC input stage.

Use Value: ±5% V_Z tolerance and −2.5 mV/°C TC ensure <±1.2% total error over −20 °C to +70 °C operating range.

Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events.

IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground when voltage exceeds 10.5 V.

Use Value: 300 mW rating sustains 100 ms surge pulses up to 300 mA without parametric shift.

Industrial PLC Input Protection

Low-Power MCU Reset Circuit

Use Scenario: Protecting 24 V digital input channels against field-wiring transients.

IC Role / Device Role / Timing Role: Reverse-biased Zener limiting input voltage to safe levels for optocoupler drivers.

Use Value: 100 Ω Z_ZT ensures clamp voltage stays within 10.5 V–11.0 V window during 10 mA fault current.

Use Scenario: Generating clean reset signal for ARM Cortex-M0 microcontrollers during power-up.

IC Role / Device Role / Timing Role: Voltage supervisor element triggering reset when supply drops below 9.5 V.

Use Value: 5 µA I_R at 7.5 V prevents loading of weak LDO outputs in ultra-low-power sleep modes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5240B	10 V ±5%, 350 mW, 170 Ω Z_ZT at 20 mA	Higher test current shifts operating point; less stable at low currents	Prefer for higher-current shunt regulation where 20 mA bias is feasible
BZX84-C10LT1G	10 V ±5%, 300 mW, 100 Ω Z_ZT at 5 mA, same SOT23	Identical electrical specs; different marking and reel packaging	Select for drop-in replacement where tape-and-reel logistics match production line requirements

Compared with MMBZ5240B, BZX84-C10/DG/B4R offers tighter low-current regulation due to matching 5 mA test condition; compared with BZX84-C10LT1G, it differs only in traceability marking and reel configuration-no electrical or thermal distinction.

Availability

BZX84-C10/DG/B4R is available at Aetrix Electronics and suitable for portable instrumentation, USB interface protection, and industrial PLC input conditioning requiring stable component supply across multi-year production cycles.

Supply support for BZX84-C10/DG/B4R 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 for automotive, industrial, and consumer markets.

The BZX84 series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive, space-constrained voltage reference and protection applications in mass-produced electronics.

FAQ

What is the maximum reverse voltage the BZX84-C10/DG/B4R can withstand before breakdown?

The BZX84-C10/DG/B4R begins controlled Zener breakdown at 9.5 V (minimum guaranteed V_Z) and reaches full regulation by 10.5 V (maximum guaranteed V_Z). Below 9.5 V, reverse leakage remains ≤5 µA at 7.5 V; sustained voltage above 10.5 V risks exceeding 300 mW power limit unless current is externally limited.

How does thermal derating affect usable power at 85 °C ambient?

At 85 °C ambient, the BZX84-C10/DG/B4R must be derated to 228 mW (300 mW − (85 − 25) × 2.4 mW/°C). This corresponds to a maximum continuous Zener current of 22.8 mA to avoid exceeding junction temperature limits, assuming standard FR-4 PCB layout with no added copper.

Is the SOT23 package lead-free and RoHS compliant?

Yes, the BZX84-C10/DG/B4R uses lead-free terminations and complies with RoHS Directive 2011/65/EU and REACH SVHC regulations. The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1), allowing unlimited floor life at ≤30 °C/85% RH.

Can this Zener diode replace a 1N4740A in existing designs?

No-1N4740A is a 10 V, 1 W through-hole Zener in DO-41 package. While voltage rating matches, BZX84-C10/DG/B4R's 300 mW rating and SOT23 footprint require redesign of thermal layout and PCB mounting. It is not a drop-in replacement for high-power applications.

BZX84-C10/DG/B4R Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 20 Ohms

Current - Reverse Leakage @ Vr:: 200 nA @ 7 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX84-C10/DG/B4R FAQ

1.How can I place an order for BZX84-C10/DG/B4R through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-C10/DG/B4R 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 BZX84-C10/DG/B4R reliable?

The price and inventory of BZX84-C10/DG/B4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C10/DG/B4R is usually 5 days.

3.What payment methods are accepted for BZX84-C10/DG/B4R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C10/DG/B4R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-C10/DG/B4R?

BZX84-C10/DG/B4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-C10/DG/B4R 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 BZX84-C10/DG/B4R?

For technical support, including BZX84-C10/DG/B4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C10/DG/B4R requirements.

6.How does Aetrix verify that BZX84-C10/DG/B4R is sourced from the original manufacturer or authorized distributors?

All BZX84-C10/DG/B4R 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 BZX84-C10/DG/B4R meets industry standards.

7.What is the process for return or replacement of BZX84-C10/DG/B4R?

All BZX84-C10/DG/B4R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C10/DG/B4R, 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 BZX84-C10/DG/B4R part is unused and in its original packaging.

Return procedure for BZX84-C10/DG/B4R:

1.Submit a request within 90 days.

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

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