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onsemi SZBZX84C24LT1G
- Part No.:
- SZBZX84C24LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C24LT1G.pdf
- Description:
- DIODE ZENER 24V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:19,277
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Product details
Overview
SZBZX84C24LT1G from onsemi is a 24 V ±5% Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board, with 70 Ω dynamic impedance at 5 mA test current and 16.8 mV/°C temperature coefficient - used for precision voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the SZBZX84C24LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener tolerance (±5%), thermal coefficient stability, low leakage (<50 nA @ 19.2 V), ESD robustness (>16 kV HBM), and automotive-grade AEC-Q101 qualification.
Technical Context
This device operates as a two-terminal voltage regulator with reverse-biased junction behavior, delivering stable 24 V reference under controlled Zener breakdown. Its 70 Ω dynamic impedance at 5 mA ensures minimal output voltage variation across load changes.
The SZBZX84C24LT1G features a 16.8 mV/°C temperature coefficient, optimized for mid-range Zener voltages where TC crosses zero near 5.6 V - resulting in predictable drift up to +150°C junction temperature. It is Pb-free, RoHS-compliant, and qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8 V min / 24.0 V nom / 25.6 V max @ IZT = 5 mA - defines regulated output range for reference design margining |
| Power Dissipation | 250 mW on FR-5 board @ 25°C - sets maximum continuous bias current limit (IZ ≤ 10.4 mA) |
| Zener Impedance (ZZT) | 70 Ω @ 5 mA - determines AC regulation error under dynamic load transients |
| Reverse Leakage Current | <50 nA @ VR = 19.2 V - ensures minimal quiescent current in standby voltage monitor circuits |
| Temperature Coefficient | +16.8 mV/°C @ 5 mA - quantifies voltage drift per degree; requires thermal derating above 25°C ambient |
| Capacitance | 80 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response in clamp applications |
| ESD Rating | Class 3 (>16 kV) per HBM - enables direct integration into handheld device I/O protection without external TVS staging |
Pinout & Package
Package: SOT-23 (TO-236), surface-mount, void-free thermosetting plastic case; cathode indicated by polarity band; UL 94 V-0 flammability rating; 260°C max soldering temperature for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; carries forward current during fault clamping |
| 2 | No Connection | Internally unconnected terminal; must remain floating - no PCB trace or pad tie required |
| 3 | Cathode | Connected to regulated output node; serves as voltage reference point and primary heat path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive under-hood and infotainment systems requiring PPAP documentation and lot traceability |
| 16 kV HBM ESD Robustness | Eliminates need for discrete ESD protection in battery-input and USB-adjacent circuits |
| 250 mW FR-5 Power Rating | Supports compact 2-layer PCB layouts without thermal vias in space-constrained portable designs |
| ±5% Zener Tolerance | Enables tighter voltage margining than standard B-series parts (±10%), reducing safety headroom overhead |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements for consumer, industrial, and automotive end equipment |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stable 24 V rail monitoring in BCM power management ICs. IC Role / Device Role / Timing Role: Voltage reference for ADC input scaling and overvoltage lockout comparator threshold. Use Value: Maintains ±5% accuracy across −40°C to +125°C ambient, enabling reliable fault detection without calibration. |
Use Scenario: Precision excitation voltage for 4–20 mA loop-powered pressure transducers. IC Role / Device Role / Timing Role: Low-drift Zener reference replacing bulkier 3-terminal shunt regulators. Use Value: 70 Ω impedance minimizes output error under varying sensor bridge current (0.5–4 mA), improving measurement linearity. |
| Portable Medical Device Power Rail | Consumer IoT Battery Protection Circuit |
Use Scenario: Overvoltage clamp on lithium-ion battery charger input (up to 28 V). IC Role / Device Role / Timing Role: Fast-response shunt protector triggered during adapter surge events. Use Value: 16 kV HBM rating withstands ESD events during field servicing; 250 mW rating handles 100 ms surges without failure. |
Use Scenario: Reference voltage for fuel gauge coulomb counter ICs in smart speakers and wearables. IC Role / Device Role / Timing Role: Low-leakage (50 nA) voltage source for analog front-end biasing. Use Value: Sub-100 nA leakage preserves battery shelf life >1 year in always-on low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C24LT1G | Same electrical specs but lacks AEC-Q101 qualification and SZ-prefix automotive traceability controls | Approved for commercial/industrial use only; not accepted in automotive PPAP submissions | Select when cost sensitivity outweighs automotive compliance requirements |
| SZBZX84B24LT1G | Tighter ±2% tolerance (vs. ±5%), higher test current (2 mA vs. 5 mA), same 70 Ω ZZT | Better suited for high-accuracy feedback loops where <1% reference error is mandatory | Choose when system-level voltage margining demands tighter initial tolerance over temperature drift compensation |
Compared with BZX84C24LT1G, the SZBZX84C24LT1G adds automotive qualification and process control without altering core regulation performance; versus SZBZX84B24LT1G, it trades tolerance precision for broader temperature coefficient stability and lower test-current dependency.
Availability
SZBZX84C24LT1G is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and portable medical device power rails requiring stable component supply with full AEC-Q101 documentation support.
Supply support for SZBZX84C24LT1G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZBZX84CxxxLT1G series is part of onsemi's automotive-qualified Zener portfolio, designed specifically for voltage reference, overvoltage protection, and biasing in harsh-environment electronics where reliability and regulatory compliance are critical.
FAQ
What is the Zener voltage tolerance of SZBZX84C24LT1G?
The SZBZX84C24LT1G has a nominal Zener voltage of 24.0 V with a tolerance of ±5%, meaning its guaranteed operating range is 22.8 V to 25.6 V at 5 mA test current and 25°C ambient. This tolerance is specified per the "C" series designation in onsemi's BZX84 family and applies across the full qualified temperature range when derated per thermal limits.
Is SZBZX84C24LT1G suitable for automotive applications?
Yes, SZBZX84C24LT1G is AEC-Q101 qualified and PPAP capable, with SZ-prefix denoting automotive-specific site and process controls. It supports operation from −65°C to +150°C junction temperature and includes full traceability, lot-level test data, and change notification protocols required for Tier 1 automotive supply chains.
What is the pin configuration and polarity marking for SZBZX84C24LT1G?
SZBZX84C24LT1G uses SOT-23 package with pinout: Pin 1 = Anode, Pin 2 = No Connection (NC), Pin 3 = Cathode. The cathode is marked by a visible polarity band on the package top surface. Pin 2 must remain unconnected on the PCB - no routing or grounding is permitted.
How does the temperature coefficient affect SZBZX84C24LT1G performance?
The SZBZX84C24LT1G has a temperature coefficient of +16.8 mV/°C at 5 mA, meaning its Zener voltage increases linearly with temperature. At +125°C ambient (assuming typical thermal resistance), the voltage may rise ~1.7 V above nominal - a critical factor when designing overvoltage thresholds or reference stability in wide-temperature environments.
What packaging and compliance certifications apply to SZBZX84C24LT1G?
SZBZX84C24LT1G is supplied in Pb-free, RoHS-compliant SOT-23 tape-and-reel packaging (3,000 units per reel), with UL 94 V-0 flammability rating and ESD robustness rated Class 3 (>16 kV HBM). It meets JESD22-A114 and AEC-Q101 stress test requirements, including HTOL, TCT, and HAST.
SZBZX84C24LT1G 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):
- 24 V
- Tolerance:
- ±6%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 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)
SZBZX84C24LT1G FAQ
1.How can I place an order for SZBZX84C24LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C24LT1G 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 SZBZX84C24LT1G reliable?
The price and inventory of SZBZX84C24LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C24LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C24LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C24LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C24LT1G?
SZBZX84C24LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C24LT1G 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 SZBZX84C24LT1G?
For technical support, including SZBZX84C24LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C24LT1G requirements.
6.How does Aetrix verify that SZBZX84C24LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C24LT1G 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 SZBZX84C24LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C24LT1G?
All SZBZX84C24LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C24LT1G, 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 SZBZX84C24LT1G part is unused and in its original packaging.
Return procedure for SZBZX84C24LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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