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onsemi SZBZX84C2V4LT1G
- Part No.:
- SZBZX84C2V4LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C2V4LT1G.pdf
- Description:
- DIODE ZENER 2.4V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:14,084
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Product details
Overview
SZBZX84C2V4LT1G from onsemi is a 2.4 V ±0.2 V Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board at 25°C, with 100 Ω dynamic impedance at 5 mA test current and −3.5 mV/°C temperature coefficient - used for low-voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the SZBZX84C2V4LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±8.3%), leakage current (≤50 μA at 1 V), ESD rating (>16 kV HBM), thermal resistance (500 °C/W), and automotive qualification per AEC-Q101.
Technical Context
This device operates as a two-terminal voltage reference diode with reverse-biased Zener breakdown at 2.4 V. Its electrical behavior is defined by three test points: 2.2–2.6 V at 5 mA, 1.7–2.1 V at 1 mA, and 2.6–3.2 V at 20 mA - confirming stable regulation across load-current variations typical in biasing and clamping circuits.
The SOT-23 package features Pin 1 (Anode), Pin 2 (No Connection), and Pin 3 (Cathode), with polarity indicated by a band. It supports automated assembly, achieves UL 94 V-0 flammability rating, and maintains operation from −65°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 2.4 V nominal, min 2.2 V / max 2.6 V at 5 mA - defines precise low-voltage reference point for analog sensing or regulator feedback. |
| Power Dissipation | 250 mW on FR-5 board at 25°C - sets maximum continuous power handling before thermal derating begins at 2.0 mW/°C above ambient. |
| Zener Impedance | 100 Ω max at 5 mA - indicates voltage regulation stability under small-signal AC ripple or transient load changes. |
| Reverse Leakage | ≤50 μA at VR = 1 V - ensures minimal quiescent current draw in standby or battery-powered circuits. |
| Temperature Coefficient | −3.5 mV/°C at 5 mA - quantifies voltage drift with temperature, critical for precision references in varying thermal environments. |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - enables robust handling during PCB assembly and end-use in handheld electronics. |
| Junction Temp Range | −65°C to +150°C - supports operation in automotive under-hood and industrial control applications. |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, dimensions 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant finish, UL 94 V-0 rated, cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; required for proper Zener conduction path. |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad should tie this terminal. |
| 3 | Cathode | Connected to higher-potential node; polarity band on package identifies this terminal for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and infotainment power supplies. |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements without lead-based solder compatibility compromises. |
| Tight Thermal Resistance Control | 500 °C/W junction-to-ambient on FR-5 board enables predictable thermal design in high-density layouts. |
| Optimized for Automated Assembly | Standard SOT-23 footprint and marking support high-yield pick-and-place and reflow processes. |
| Low-Capacitance Operation | 450 pF max at 0 V bias and 1 MHz - preserves signal integrity in RF-coupled or high-speed clamp applications. |
Applications
| Smartphone Power Management | Automotive Cabin Controller |
|---|---|
|
Use Scenario: Regulating 2.5 V bias rail for PMIC monitoring circuitry in LTE modem subsystems. IC Role / Device Role / Timing Role: Two-terminal Zener reference providing stable voltage threshold for undervoltage lockout detection. Use Value: Maintains 2.4 V ±0.2 V accuracy across −20°C to +85°C ambient, enabling reliable brownout response without external op-amps. |
Use Scenario: Clamping CAN transceiver supply line against load-dump transients in HVAC control units. IC Role / Device Role / Timing Role: Shunt protector limiting voltage excursions to ≤2.6 V during 12 V system surges. Use Value: Absorbs up to 250 mW peak energy without degradation, meeting ISO 7637-2 Pulse 1/2a immunity requirements. |
| Industrial Sensor Node | Medical Wearable Battery Monitor |
|
Use Scenario: Providing reference voltage for 12-bit ADC measuring 3.3 V LDO output in predictive maintenance sensor hub. IC Role / Device Role / Timing Role: Precision voltage reference with −3.5 mV/°C TC, calibrated against internal bandgap. Use Value: Enables <±0.5% total measurement error over full industrial temperature range without software compensation. |
Use Scenario: Monitoring Li-ion cell voltage via resistive divider with low-quiescent-current Zener biasing. IC Role / Device Role / Timing Role: Low-leakage (≤50 μA @ 1 V) shunt reference stabilizing divider network during sleep mode. Use Value: Extends battery life by minimizing standby current while maintaining 2.4 V reference stability for accurate SOC estimation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C2V4LT1G | Same Zener voltage and SOT-23 package, but lacks AEC-Q101 qualification and automotive PPAP capability. | Restricted to commercial-grade consumer electronics; not approved for automotive production. | Select when cost sensitivity outweighs automotive compliance requirements. |
| SZBZX84C2V7LT1G | Higher nominal Zener voltage (2.7 V), same tolerance (±0.2 V), identical package and thermal specs. | Used where 2.7 V reference aligns with MCU I/O voltage thresholds or comparator hysteresis design. | Choose for systems requiring margin above 2.4 V logic levels or tighter noise immunity. |
Compared with BZX84C2V4LT1G and SZBZX84C2V7LT1G, the SZBZX84C2V4LT1G uniquely combines automotive qualification, −3.5 mV/°C TC, and 250 mW FR-5 rating - making it the only option qualified for safety-critical vehicle subsystems needing 2.4 V reference stability.
Availability
SZBZX84C2V4LT1G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin controllers, and industrial sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZBZX84C2V4LT1G 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
SZBZX84C2V4LT1G belongs to the SZBZX84CxxxLT1G series of AEC-Q101-qualified Zener diodes designed specifically for automotive and high-reliability industrial applications demanding tight voltage regulation and robust ESD performance.
FAQ
What is the Zener voltage tolerance of SZBZX84C2V4LT1G at 5 mA test current?
The SZBZX84C2V4LT1G has a Zener voltage range of 2.2 V to 2.6 V at 5 mA, corresponding to a ±0.2 V absolute tolerance or ±8.3% relative tolerance around the nominal 2.4 V value. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 23, August 2021), and applies strictly under TA = 25°C conditions with pulse testing.
Is SZBZX84C2V4LT1G pin-compatible with standard BZX84C2V4LT1G diodes?
Yes, SZBZX84C2V4LT1G shares identical SOT-23 pinout (Pin 1: Anode, Pin 2: No Connection, Pin 3: Cathode) and mechanical dimensions with BZX84C2V4LT1G. However, the "SZ" prefix denotes automotive qualification (AEC-Q101, PPAP-capable) and unique site/control change requirements - meaning electrical and physical compatibility is maintained, but qualification status differs.
What is the maximum reverse leakage current specification for SZBZX84C2V4LT1G?
The maximum reverse leakage current for SZBZX84C2V4LT1G is 50 μA at VR = 1 V and TA = 25°C, as specified in the Electrical Characteristics table on page 3 of the onsemi datasheet. At VR = 0.5 V, leakage drops to ≤10 μA, and at VR = 0 V, it is effectively zero - supporting ultra-low-power biasing in battery-operated systems.
Does SZBZX84C2V4LT1G support reflow soldering, and what is its maximum soldering temperature?
Yes, SZBZX84C2V4LT1G is qualified for standard Pb-free reflow soldering. The maximum case temperature is 260°C for 10 seconds, per the Mechanical Characteristics section of the datasheet. Its thermosetting plastic case and corrosion-resistant finish ensure reliability through JEDEC J-STD-020-compliant thermal profiles.
How does the temperature coefficient of SZBZX84C2V4LT1G affect its voltage reference accuracy over temperature?
The SZBZX84C2V4LT1G has a temperature coefficient of −3.5 mV/°C at 5 mA, meaning its Zener voltage decreases by 3.5 mV per degree Celsius rise above 25°C. Over a −40°C to +125°C operating range, this results in a total drift of approximately ±52.5 mV - a key factor in precision reference designs where software calibration or TC-compensated circuits may be needed.
SZBZX84C2V4LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84CxxxLT1G
- 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:
- 250 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)
SZBZX84C2V4LT1G FAQ
1.How can I place an order for SZBZX84C2V4LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C2V4LT1G 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 SZBZX84C2V4LT1G reliable?
The price and inventory of SZBZX84C2V4LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C2V4LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C2V4LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C2V4LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C2V4LT1G?
SZBZX84C2V4LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C2V4LT1G 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 SZBZX84C2V4LT1G?
For technical support, including SZBZX84C2V4LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C2V4LT1G requirements.
6.How does Aetrix verify that SZBZX84C2V4LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C2V4LT1G 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 SZBZX84C2V4LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C2V4LT1G?
All SZBZX84C2V4LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C2V4LT1G, 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 SZBZX84C2V4LT1G part is unused and in its original packaging.
Return procedure for SZBZX84C2V4LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C2V4LT1G Tags
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