My Inquiry
My Account
onsemi SZBZX84C2V4ET1G
- Part No.:
- SZBZX84C2V4ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C2V4ET1G.pdf
- Description:
- DIODE ZENER 2.4V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,720
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZBZX84C2V4ET1G from onsemi is a 2.4 V, 250 mW surface-mount Zener diode in SOT-23 package, designed for precision voltage regulation and low-power reference applications. It delivers nominal Zener voltage of 2.4 V at 5 mA test current, with ±0.2 V tolerance (2.2–2.6 V), dynamic impedance ≤100 Ω at 5 mA, and reverse leakage ≤50 µA at 1.0 V, commonly used in voltage clamping and biasing circuits for portable electronics.
For engineers reviewing the SZBZX84C2V4ET1G datasheet, pinout, applications, or equivalent options, key selection considerations include its 2.4 V nominal Zener voltage, 250 mW power rating on FR-5 board, −3.5 mV/°C temperature coefficient, 450 pF capacitance at 0 V, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode-anode polarity, featuring a non-connected terminal (Pin 2) in its SOT-23 package. Its Zener breakdown mechanism provides stable reverse conduction above 2.4 V, with thermal resistance of 500 °C/W on FR-5 board and junction temperature range from −65 °C to +150 °C.
It supports pulse operation up to 225 W (8 × 20 µs), exhibits ESD robustness >16 kV (HBM Class 3), and maintains specified Zener voltage across 0.1–20 mA test currents - with VZ = 2.1 V at 1 mA and 3.2 V at 20 mA - enabling use in both precision biasing and transient suppression roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.4 V at IZT = 5 mA - defines primary regulation point for low-voltage reference design |
| Zener Voltage Range | 2.2 V to 2.6 V - ensures guaranteed regulation window under production tolerances |
| Power Dissipation | 250 mW on FR-5 board - sets maximum continuous DC power handling at 25 °C ambient |
| Zener Impedance | ≤100 Ω at 5 mA - determines output voltage stability under varying load current |
| Reverse Leakage Current | ≤50 µA at VR = 1.0 V - defines minimum off-state current in clamping configurations |
| Temperature Coefficient | −3.5 mV/°C - quantifies voltage drift over temperature, critical for stable references |
| Capacitance | 450 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity |
Pinout & Package
SOT-23 (TO-236) plastic surface-mount package, 2.90 mm × 1.30 mm × 1.00 mm, void-free thermosetting case with corrosion-resistant finish; cathode identified by band; UL 94 V-0 flammability rating; max solder temperature 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Zener conduction terminal; connects to higher-potential node and regulates voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and infotainment power rails |
| ESD Robustness | HBM Class 3 (>16 kV) enables direct integration into handheld and exposed I/O interfaces without added protection |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements for industrial and consumer end equipment |
| Peak Pulse Power | 225 W (8 × 20 µs) supports transient overvoltage suppression in compact space-constrained designs |
| Small Outline Package | SOT-23 footprint allows high-density placement on portable PCBs such as smartphones and wearables |
Applications
| Portable Device Voltage Clamp | Low-Voltage Reference Generator |
|---|---|
Use Scenario: Protecting microcontroller I/O pins from ESD-induced overvoltage during USB or button interface events in Bluetooth earbuds. IC Role / Device Role / Timing Role: Zener clamping element shunting transient energy to ground before it reaches sensitive logic inputs. Use Value: Leverages 2.4 V breakdown threshold and 450 pF capacitance to suppress fast transients while maintaining signal integrity below logic thresholds. |
Use Scenario: Providing stable bias voltage for op-amp comparators in battery-powered smoke detectors operating down to 2.0 V supply. IC Role / Device Role / Timing Role: Two-terminal passive reference source establishing precise trip-point voltage independent of supply variation. Use Value: Delivers <±0.2 V regulation window and −3.5 mV/°C TC to ensure consistent detection threshold across −20 °C to +70 °C operating range. |
| Automotive Sensor Biasing | USB Port Overvoltage Protection |
Use Scenario: Supplying regulated excitation voltage to analog pressure sensors in HVAC control units within vehicles. IC Role / Device Role / Timing Role: Precision Zener regulator ensuring sensor output linearity despite 12 V battery fluctuations and load dump transients. Use Value: AEC-Q101 qualification and 150 °C max junction temperature support reliable operation in under-hood environments. |
Use Scenario: Clamping D+ and D− lines against 5.5 V overvoltage during hot-plug events in USB 2.0 host ports on industrial gateways. IC Role / Device Role / Timing Role: Fast-response voltage limiter absorbing surge energy before USB transceiver ICs are damaged. Use Value: 225 W peak pulse capability and 250 mW steady-state dissipation enable robust protection without thermal derating concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C2V4ET1G | Non-automotive grade; lacks AEC-Q101 qualification and PPAP capability; identical electrical specs and SOT-23 package | Approved for commercial/industrial use only; not suitable for automotive production programs | Select when automotive qualification is unnecessary and cost sensitivity is high |
| MMSZ4676T1G | Same 2.4 V nominal Zener voltage but rated at 500 mW; higher power dissipation and larger SOD-123 package (3.7 × 1.6 mm) | Used where higher continuous power or thermal margin is required; incompatible with SOT-23 footprints | Choose when board layout allows larger package and >250 mW steady-state dissipation is needed |
Compared with BZX84C2V4ET1G and MMSZ4676T1G, SZBZX84C2V4ET1G uniquely combines automotive qualification, SOT-23 miniaturization, and 2.4 V precision regulation - making it the only option for space-constrained AEC-Q101-compliant designs requiring exact 2.4 V clamping.
Availability
SZBZX84C2V4ET1G is available at Aetrix Electronics and suitable for automotive sensor biasing, portable device voltage clamping, and low-voltage reference generator applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SZBZX84C2V4ET1G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZBZX84C2V4ET1G belongs to the BZX84CxxxET1G/SZBZX84CxxxET1G series - engineered for compact, high-reliability voltage regulation in space-constrained and mission-critical systems.
FAQ
What is the Zener voltage tolerance of SZBZX84C2V4ET1G at 5 mA test current?
The SZBZX84C2V4ET1G has a Zener voltage range of 2.2 V to 2.6 V at IZT = 5 mA, corresponding to a nominal 2.4 V with ±0.2 V absolute tolerance. This specification is verified per onsemi's August 2024 Rev. 11 datasheet and applies across the full operating temperature range of −65 °C to +150 °C.
Is SZBZX84C2V4ET1G pin-compatible with standard BZX84C2V4ET1G diodes?
Yes, SZBZX84C2V4ET1G shares identical SOT-23 pinout (Pin 1: Anode, Pin 2: No Connection, Pin 3: Cathode), mechanical dimensions, and electrical characteristics with BZX84C2V4ET1G. The "SZ" prefix denotes automotive qualification (AEC-Q101, PPAP-capable) but does not alter physical or functional compatibility.
What is the maximum reverse leakage current for SZBZX84C2V4ET1G at 1.0 V?
The maximum reverse leakage current for SZBZX84C2V4ET1G is 50 µA at VR = 1.0 V and TA = 25 °C, as specified in the Electrical Characteristics table on page 2 of the onsemi datasheet. This value remains valid up to +150 °C junction temperature per thermal derating curves.
Does SZBZX84C2V4ET1G support high-frequency applications given its capacitance?
SZBZX84C2V4ET1G exhibits 450 pF capacitance at 0 V bias and 1 MHz, limiting its use in RF or >10 MHz signal paths. However, this capacitance is beneficial in low-speed voltage clamping and ESD protection where fast transient response is prioritized over bandwidth.
What packaging options are available for SZBZX84C2V4ET1G?
SZBZX84C2V4ET1G is supplied in Pb-free, RoHS-compliant tape-and-reel format: 3,000 units per reel (order code suffix ET1G). Reel specifications follow onsemi's BRD8011/D standard, with device marking "BA1" and date code orientation varying by manufacturing site.
SZBZX84C2V4ET1G 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):
- 2.4 V
- Tolerance:
- ±8%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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)
SZBZX84C2V4ET1G FAQ
1.How can I place an order for SZBZX84C2V4ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C2V4ET1G 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 SZBZX84C2V4ET1G reliable?
The price and inventory of SZBZX84C2V4ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C2V4ET1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C2V4ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C2V4ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C2V4ET1G?
SZBZX84C2V4ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C2V4ET1G 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 SZBZX84C2V4ET1G?
For technical support, including SZBZX84C2V4ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C2V4ET1G requirements.
6.How does Aetrix verify that SZBZX84C2V4ET1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C2V4ET1G 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 SZBZX84C2V4ET1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C2V4ET1G?
All SZBZX84C2V4ET1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C2V4ET1G, 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 SZBZX84C2V4ET1G part is unused and in its original packaging.
Return procedure for SZBZX84C2V4ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C2V4ET1G Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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.
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…
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…
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…
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 …
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…
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…
