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

onsemi SZBZX84C2V7ET1G

Name: SZBZX84C2V7ET1G
Brand: onsemi
SKU: SZBZX84C2V7ET1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZBZX84C2V7ET1G

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: SZBZX84C2V7ET1G.pdf

Description:: DIODE ZENER 2.7V 225MW SOT23-3

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Product details

Overview

SZBZX84C2V7ET1G from onsemi is a 2.7 V ±0.2 V Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C on FR-5 board, with 100 Ω dynamic impedance at 5 mA test current and −3.5 mV/°C temperature coefficient. It provides precision low-voltage regulation in space-constrained portable electronics.

For engineers reviewing the SZBZX84C2V7ET1G datasheet, pinout, applications, or equivalent options, key selection factors include its 2.5–2.9 V Zener voltage range at 5 mA, 20 µA max reverse leakage at 1.0 V, 450 pF capacitance at 0 V, and AEC-Q101 qualification for automotive use.

Technical Context

This device operates as a two-terminal voltage reference using avalanche and Zener breakdown mechanisms. Its nominal 2.7 V regulation targets low-dropout biasing and feedback sensing in 3.3 V and lower supply rails.

The SOT-23 package supports automated placement and reflow soldering, with cathode indicated by band marking. Pin 2 is internally unconnected - confirmed per onsemi mechanical outline Style 8 - enabling simplified PCB layout with only two active terminals.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.5 V to 2.9 V @ I_ZT = 5 mA - ensures stable reference within ±7.4% tolerance for 2.7 V nominal rail
Power Dissipation	250 mW @ T_A = 25°C on FR-5 - defines maximum continuous DC power before thermal derating begins
Zener Impedance	100 Ω @ I_ZT = 5 mA - limits output voltage variation under load transients in feedback loops
Reverse Leakage	20 µA @ V_R = 1.0 V - determines quiescent current penalty in always-on bias networks
Capacitance	450 pF @ V_R = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits
Temp. Coefficient	−3.5 mV/°C @ I_ZT = 5 mA - enables predictable drift compensation in temperature-sensitive references
ESD Rating	Class 3 (>16 kV HBM) - supports direct handling and assembly without special ESD controls

Pinout & Package

SOT-23 (TO-236) surface-mount plastic package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant finish and UL 94 V-0 flammability rating. Cathode marked by band.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode	Connected to lower-potential node; reverse-biased during regulation; carries full Zener current
2	No Connection	Internally unconnected - no PCB trace or pad required; eliminates routing conflict in dense layouts
3	Cathode	Connected to higher-potential node; polarity band identifies this terminal for correct orientation

Key Features

Feature	Design Value
AEC-Q101 Qualified	Validated for automotive applications including engine control modules and body electronics requiring PPAP documentation
Pb-Free & RoHS Compliant	Meets global environmental regulations without compromising solderability or thermal performance
225 W Peak Pulse Power	Withstands 8 × 20 µs surge events common in ESD and load-dump transient protection circuits
Optimized for High-Density Layout	Small footprint enables placement near IC power pins for local decoupling and reference stability
FR-4/FR-5 Board Rated	Thermal performance characterized on standard PCB materials - no special substrate needed

Applications

Smartphone Power Management	Automotive Cabin Controller
Use Scenario: Regulating reference voltage for battery fuel gauge ICs and low-power sensor interfaces in compact mobile platforms. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing stable 2.7 V reference for ADC bias and comparator thresholds. Use Value: Tight 2.5–2.9 V tolerance and low 20 µA leakage minimize measurement error and extend standby battery life.	Use Scenario: Supplying precise bias to LIN transceiver input comparators and microcontroller reset supervisors in dashboard modules. IC Role / Device Role / Timing Role: Zener clamp establishing known logic threshold independent of main 5 V rail fluctuations. Use Value: AEC-Q101 qualification and −65°C to +150°C operating range ensure reliability across vehicle thermal cycles.
Industrial IoT Sensor Node	USB-C Power Delivery Monitor
Use Scenario: Generating local reference for analog front-end amplifiers in battery-powered environmental sensors deployed in remote locations. IC Role / Device Role / Timing Role: Shunt reference stabilizing op-amp gain-setting resistors and ADC reference dividers. Use Value: −3.5 mV/°C tempco allows predictable calibration offset correction over industrial temperature range.	Use Scenario: Clamping voltage on CC line monitoring circuitry to protect USB PD controller GPIOs from overvoltage events. IC Role / Device Role / Timing Role: Transient voltage suppressor and level translator between 3.3 V logic and variable CC line voltages. Use Value: 450 pF capacitance provides inherent high-frequency filtering while maintaining fast response to PD negotiation pulses.

Smartphone Power Management

Automotive Cabin Controller

Use Scenario: Regulating reference voltage for battery fuel gauge ICs and low-power sensor interfaces in compact mobile platforms.

IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing stable 2.7 V reference for ADC bias and comparator thresholds.

Use Value: Tight 2.5–2.9 V tolerance and low 20 µA leakage minimize measurement error and extend standby battery life.

Use Scenario: Supplying precise bias to LIN transceiver input comparators and microcontroller reset supervisors in dashboard modules.

IC Role / Device Role / Timing Role: Zener clamp establishing known logic threshold independent of main 5 V rail fluctuations.

Use Value: AEC-Q101 qualification and −65°C to +150°C operating range ensure reliability across vehicle thermal cycles.

Industrial IoT Sensor Node

USB-C Power Delivery Monitor

Use Scenario: Generating local reference for analog front-end amplifiers in battery-powered environmental sensors deployed in remote locations.

IC Role / Device Role / Timing Role: Shunt reference stabilizing op-amp gain-setting resistors and ADC reference dividers.

Use Value: −3.5 mV/°C tempco allows predictable calibration offset correction over industrial temperature range.

Use Scenario: Clamping voltage on CC line monitoring circuitry to protect USB PD controller GPIOs from overvoltage events.

IC Role / Device Role / Timing Role: Transient voltage suppressor and level translator between 3.3 V logic and variable CC line voltages.

Use Value: 450 pF capacitance provides inherent high-frequency filtering while maintaining fast response to PD negotiation pulses.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84C2V7ET1G	Non-automotive grade; lacks AEC-Q101 qualification and PPAP support	Intended for consumer portables and general-purpose boards where automotive compliance is not required	Select when cost sensitivity outweighs automotive qualification needs and supply chain traceability is less critical
MMSZ4675T1G	Same 2.7 V nominal Zener voltage but higher 150 Ω Z_ZT @ 5 mA; 350 mW power rating on FR-4	Higher power capability suits higher-current bias networks; slightly looser regulation due to higher impedance	Choose when >250 mW dissipation is needed or when legacy MMSZ footprint compatibility is required

Compared with BZX84C2V7ET1G and MMSZ4675T1G, SZBZX84C2V7ET1G delivers tighter regulation (100 Ω vs. 150 Ω Z_ZT), automotive-grade reliability, and lower leakage - making it optimal for safety-critical or thermally constrained designs where precision and qualification matter most.

Availability

SZBZX84C2V7ET1G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin controllers, industrial IoT sensor nodes, and USB-C power delivery monitors requiring stable component supply across production lifecycles.

Supply support for SZBZX84C2V7ET1G 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

onsemi is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The BZX84CxxxET1G/SZBZX84CxxxET1G series was designed specifically for compact, high-reliability voltage regulation in portable and automotive electronics - emphasizing small size, robust ESD immunity, and AEC-Q101 compliance.

FAQ

What is the Zener voltage tolerance of SZBZX84C2V7ET1G at 5 mA test current?

The SZBZX84C2V7ET1G has a guaranteed Zener voltage range of 2.5 V to 2.9 V at I_ZT = 5 mA, corresponding to a ±0.2 V absolute tolerance around the 2.7 V nominal value. This 7.4% tolerance band is verified per onsemi's Electrical Characteristics table on page 2 of the datasheet and applies under standard 25°C ambient conditions.

Is SZBZX84C2V7ET1G pin-compatible with standard SOT-23 Zener diodes?

Yes, SZBZX84C2V7ET1G uses SOT-23 package Style 8 with pinout: Pin 1 = Anode, Pin 2 = No Connection, Pin 3 = Cathode - matching industry-standard two-terminal Zener configurations. The unconnected Pin 2 simplifies layout and avoids misrouting, and the cathode band aligns with conventional SOT-23 polarity marking conventions.

Does SZBZX84C2V7ET1G support automotive applications?

Yes, SZBZX84C2V7ET1G is explicitly AEC-Q101 qualified and PPAP capable, as stated in the "Specification Features" section of the datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements, confirming its suitability for under-hood and cabin electronics where reliability and process traceability are mandatory.

What is the maximum reverse leakage current for SZBZX84C2V7ET1G at 1.0 V?

The maximum reverse leakage current for SZBZX84C2V7ET1G is 20 µA at V_R = 1.0 V, as specified in the Electrical Characteristics table on page 2. This parameter directly affects quiescent power loss in always-on bias networks and is measured at 25°C ambient temperature with no self-heating effects.

How does the temperature coefficient of SZBZX84C2V7ET1G affect its regulation accuracy?

The SZBZX84C2V7ET1G has a temperature coefficient of −3.5 mV/°C at I_ZT = 5 mA, meaning its Zener voltage decreases by 3.5 mV per degree Celsius rise in junction temperature. Over a −40°C to +125°C operating range, this results in up to ±577.5 mV total drift - a key factor in precision reference design that must be compensated via circuit topology or calibration.

SZBZX84C2V7ET1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.7 V

Tolerance:: ±7%

Power - Max:: 225 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 20 µA @ 1 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:: SOT-23-3 (TO-236)

SZBZX84C2V7ET1G FAQ

1.How can I place an order for SZBZX84C2V7ET1G through Aetrix?

Please submit a Request for Quotation (RFQ) for SZBZX84C2V7ET1G 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 SZBZX84C2V7ET1G reliable?

The price and inventory of SZBZX84C2V7ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C2V7ET1G is usually 5 days.

3.What payment methods are accepted for SZBZX84C2V7ET1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C2V7ET1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZBZX84C2V7ET1G?

SZBZX84C2V7ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZBZX84C2V7ET1G 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 SZBZX84C2V7ET1G?

For technical support, including SZBZX84C2V7ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C2V7ET1G requirements.

6.How does Aetrix verify that SZBZX84C2V7ET1G is sourced from the original manufacturer or authorized distributors?

All SZBZX84C2V7ET1G 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 SZBZX84C2V7ET1G meets industry standards.

7.What is the process for return or replacement of SZBZX84C2V7ET1G?

All SZBZX84C2V7ET1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C2V7ET1G, 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 SZBZX84C2V7ET1G part is unused and in its original packaging.

Return procedure for SZBZX84C2V7ET1G:

1.Submit a request within 90 days.

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

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