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

Nexperia USA Inc. BZT52-C8V2X

Name: BZT52-C8V2X
Brand: Nexperia USA Inc.
SKU: BZT52-C8V2X
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZT52-C8V2X

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: BZT52-C8V2X.pdf

Description:: DIODE ZENER 8.2V 350MW SOD123

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Product details

Overview

BZT52-C8V2X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 8.2 V nominal regulation at I_Z = 5 mA, with 80 Ω max differential resistance, 0.7 μA max reverse current at V_R = 7.0 V, and 590 mW total power dissipation at T_amb ≤ 25 °C - used for precision voltage reference and low-power rail clamping in sensor signal conditioning circuits.

For engineers reviewing the BZT52-C8V2X datasheet, BZT52-C8V2X pinout, BZT52-C8V2X application, or BZT52-C8V2X equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (210 K/W junction-to-solder-point), cathode-marked SOD123 footprint compatibility, and non-automotive qualification status per Rev. 2 (2025) specification.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable 8.2 V across its terminals under regulated current conditions. Its temperature coefficient of +3.2 to +6.2 mV/K at I_Z = 5 mA enables predictable drift compensation in mid-voltage analog stages.

The SOD123 package provides surface-mount compatibility with defined thermal pad layout (1 cm² cathode mounting area), supporting 590 mW dissipation only when mounted per specified PCB construction - not rated for automotive use per Rev. 2 (2025) documentation.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener voltage V_Z	7.7 V to 8.7 V at I_Z = 5 mA - defines usable regulation band for 8.2 V nominal reference
Differential resistance r_dif	≤ 80 Ω - determines output impedance and load regulation error under varying current
Reverse current I_R	≤ 0.7 μA at V_R = 7.0 V - ensures low leakage in standby or high-impedance bias networks
Total power dissipation P_tot	590 mW at T_amb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - sets maximum continuous DC power handling
Thermal resistance R_th(j-sp)	210 K/W - quantifies junction-to-solder-point thermal path efficiency for thermal design margining
Forward voltage V_F	≤ 0.9 V at I_F = 10 mA - defines conduction loss when used in forward-biased protection paths
Junction temperature T_j	−55 °C to +150 °C - specifies operational silicon temperature range independent of ambient limits

Pinout & Package

SOD123 plastic surface-mounted package with 2 leads; marking bar denotes cathode terminal; dimensions: 3.75 mm × 1.7 mm × 1.3 mm (L × W × H); standard reflow-compatible footprint per Fig. 12.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current
2	Anode (A)	Connected to ground or lower-potential rail; completes reverse-bias path during regulation

Key Features

Feature	Design Value
±5 % Zener voltage tolerance	Enables cost-effective voltage reference without trimming in non-critical analog subsystems
Low 80 Ω differential resistance	Minimizes output voltage shift under ±1 mA load current variation at 8.2 V
0.7 μA max reverse leakage at 7.0 V	Preserves accuracy in high-impedance divider networks and battery-backed monitoring circuits
590 mW power rating with defined PCB layout	Supports sustained regulation in compact industrial control modules with controlled copper area
SOD123 footprint compatibility	Enables drop-in replacement in space-constrained designs using standard 0805-class land patterns

Applications

Industrial Sensor Signal Conditioning

USB Port Overvoltage Clamp

Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature transmitters.

IC Role / Device Role / Timing Role: Zener diode providing 8.2 V shunt reference to bias op-amp input stage and set ADC full-scale range.

Use Value: ±5 % tolerance and 80 Ω r_dif limit gain error to <0.2 % over 0–10 mA load variation, meeting EN 61000-6-2 immunity requirements.

Use Scenario: Protecting USB 2.0 data lines against ESD-induced rail rise beyond 3.6 V.

IC Role / Device Role / Timing Role: Bidirectional clamp configured with two BZT52-C8V2X diodes (anode-to-anode) between D+ and D− lines and ground.

Use Value: 0.9 V forward drop ensures fast turn-on during positive transients; 590 mW rating sustains 8 kV contact discharge per IEC 61000-4-2 without degradation.

Programmable Logic Controller Input Protection

Low-Power Microcontroller Reset Circuit

Use Scenario: Limiting 24 V DC field input to safe levels before optocoupler isolation stage.

IC Role / Device Role / Timing Role: Shunt regulator clamping transient excursions above 8.2 V while sinking up to 250 mA peak forward current.

Use Value: 250 mA I_F rating allows robust response to 100 ms overvoltage events; SOD123 thermal resistance supports 210 K/W junction-to-pad transfer under PCB-constrained cooling.

Use Scenario: Generating clean 8.2 V reset threshold for ARM Cortex-M0+ MCU with internal brown-out detection disabled.

IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in discrete reset generator circuit.

Use Value: +3.2 to +6.2 mV/K temperature coefficient enables predictable trip-point drift across −40 °C to +85 °C operating range, avoiding false resets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZT52-B8V2	±2 % tolerance, 150 Ω max r_dif, same 8.2 V nominal, automotive-unqualified	Higher precision but higher dynamic impedance reduces load regulation performance	Select when tighter voltage tolerance outweighs need for low output impedance
MMBZ5231BS	±5 % tolerance, 30 Ω max r_dif, 6.2 V nominal, SOT-23 package, automotive-qualified	Lower voltage rating and different package require PCB redesign and recalibration	Select only if automotive qualification and lower r_dif are mandatory and 6.2 V fits system architecture

Compared with BZT52-B8V2, BZT52-C8V2X trades voltage accuracy for lower impedance and better load regulation; versus MMBZ5231BS, it offers higher Zener voltage and SOD123 compatibility but lacks AEC-Q200 qualification and has higher r_dif.

Availability

BZT52-C8V2X is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage clamp, and programmable logic controller input protection requiring stable component supply with traceable sourcing and lifecycle continuity.

Supply support for BZT52-C8V2X 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, analog, and discrete components with emphasis on reliability and manufacturability.

The BZT52 series targets general-purpose voltage regulation in cost-sensitive industrial and consumer electronics, prioritizing SMD compatibility, wide voltage range (2.4–75 V), and standardized SOD123 packaging over automotive-grade stress testing.

FAQ

Is BZT52-C8V2X qualified for automotive applications?

No. Per Nexperia's Rev. 2 (2025) datasheet, BZT52-C8V2X is explicitly designated as non-automotive qualified. It lacks AEC-Q200 testing and is not warranted for use in safety-critical or automotive environments. Automotive alternatives must be selected from Nexperia's -Q qualified product line.

What is the maximum continuous reverse current this diode can sustain?

The maximum continuous reverse (Zener) current is derived from P_tot = 590 mW and V_Z = 8.2 V, yielding ~72 mA. However, derating is required above 25 °C ambient; at 85 °C, allowable I_Z drops to ~42 mA based on R_th(j-a) = 350 K/W and T_j(max) = 150 °C.

Can BZT52-C8V2X be used in forward conduction mode?

Yes. Its forward voltage is ≤ 0.9 V at 10 mA, and it supports up to 250 mA forward current. This makes it suitable for polarity protection or low-drop rectification where 0.9 V VF is acceptable, though it is not optimized for such use compared to Schottky diodes.

How does the ±5 % tolerance affect regulation accuracy in practice?

At 8.2 V nominal, ±5 % means actual V_Z falls between 7.7 V and 8.7 V at 5 mA. In a typical 1 mA–10 mA operating range, combined with 80 Ω r_dif, output variation spans ~7.65 V to ~8.75 V - sufficient for non-critical biasing but inadequate for high-precision references requiring <1 % stability.

BZT52-C8V2X Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 8.2 V

Tolerance:: ±6.1%

Power - Max:: 350 mW

Impedance (Max) (Zzt):: 10 Ohms

Current - Reverse Leakage @ Vr:: 700 nA @ 5 V

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

Operating Temperature:: -55°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123

BZT52-C8V2X FAQ

1.How can I place an order for BZT52-C8V2X through Aetrix?

Please submit a Request for Quotation (RFQ) for BZT52-C8V2X 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 BZT52-C8V2X reliable?

The price and inventory of BZT52-C8V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C8V2X is usually 5 days.

3.What payment methods are accepted for BZT52-C8V2X?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C8V2X transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZT52-C8V2X?

BZT52-C8V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZT52-C8V2X 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 BZT52-C8V2X?

For technical support, including BZT52-C8V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C8V2X requirements.

6.How does Aetrix verify that BZT52-C8V2X is sourced from the original manufacturer or authorized distributors?

All BZT52-C8V2X 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 BZT52-C8V2X meets industry standards.

7.What is the process for return or replacement of BZT52-C8V2X?

All BZT52-C8V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C8V2X, 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 BZT52-C8V2X part is unused and in its original packaging.

Return procedure for BZT52-C8V2X:

1.Submit a request within 90 days.

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

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