My Inquiry
My Account
onsemi SZBZX84B24LT1G
- Part No.:
- SZBZX84B24LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84B24LT1G.pdf
- Description:
- DIODE ZENER 24V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,118
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZBZX84B24LT1G from onsemi is a 24 V ±2.1% tight-tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C 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 SZBZX84B24LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±2.1%), thermal coefficient (16.8 mV/°C), low leakage (≤50 nA @ 19.2 V), ESD robustness (>16 kV HBM), and AEC-Q101 qualification for automotive subsystems.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp or regulate voltage at its nominal 24 V Zener point. It features a single junction structure with cathode-anode polarity and no internal series resistance compensation.
Designed for surface-mount use on high-density PCBs, it delivers stable regulation under pulsed test conditions (IZT = 5 mA) and maintains specified performance across −65°C to +150°C junction temperature range. Its SOT-23 package supports automated placement and reflow soldering per JEDEC J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 24 V nominal, 23.5–24.5 V min–max at 5 mA - enables precise 24 V rail clamping with ±2.1% tolerance. |
| Power Dissipation | 250 mW on FR-5 board at 25°C - defines maximum continuous power handling before thermal derating begins. |
| Zener Impedance | 70 Ω max at IZT = 5 mA - determines regulation stiffness and output voltage variation under load changes. |
| Reverse Leakage | ≤50 nA at VR = 19.2 V - ensures minimal quiescent current draw in standby or sensing circuits. |
| Temp Coefficient | +16.8 mV/°C at 24 V - quantifies voltage drift with temperature; critical for stable reference in varying ambient conditions. |
| Capacitance | 80 pF max at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response in bypass applications. |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robustness against electrostatic discharge during handling and assembly. |
Pinout & Package
SOT-23 (TO-236) plastic surface-mount package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant finish; cathode indicated by band; Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential side of regulated node in reverse-bias operation. |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required. |
| 3 | Cathode | Reverse-biased terminal; connects to higher-potential side (e.g., supply rail) to enable Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener tolerance | ±2.1% (23.5–24.5 V) - reduces calibration overhead in precision analog monitoring circuits. |
| AEC-Q101 qualification | Automotive-grade reliability with PPAP capability - supports deployment in engine control, body electronics, and ADAS power domains. |
| Low leakage current | ≤50 nA @ 19.2 V - minimizes error in high-impedance voltage divider or sensor bias networks. |
| High ESD immunity | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in handheld and infotainment interfaces. |
| Pb-free & RoHS | Compliant with EU Directive 2011/65/EU - meets environmental compliance requirements for global OEM production. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stable 24 V reference for microcontroller ADC input scaling in door module power management. IC Role / Device Role / Timing Role: Precision voltage reference diode providing calibrated feedback for LDO output monitoring. Use Value: Enables <±0.5% system-level voltage measurement accuracy across −40°C to +125°C operating range. |
Use Scenario: Overvoltage clamp protecting 24 V industrial transducer inputs from surge events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing transient energy above 24.5 V threshold. Use Value: Limits input voltage to ≤25.7 V at 20 mA, preventing damage to downstream op-amps and isolators. |
| Portable Medical Device Power Rail | Telecom DC-DC Converter Feedback |
Use Scenario: Low-power voltage reference for battery voltage monitoring in handheld diagnostic tools. IC Role / Device Role / Timing Role: Zener-based reference generating stable 24 V benchmark for fuel gauge IC. Use Value: Delivers <100 ppm/°C effective drift via matched thermal design, supporting 0.1% SoC estimation. |
Use Scenario: Secondary-side voltage sensing element in isolated 24 V telecom DC-DC converter. IC Role / Device Role / Timing Role: Shunt reference establishing precise 24 V feedback point for optocoupler-coupled regulation loop. Use Value: Maintains ±1.2% output regulation over line/load/transient conditions due to tight 24 V tolerance and low ZZT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84B24LT1G | Same electrical specs but non-automotive grade; lacks AEC-Q101 qualification and PPAP support. | Approved for commercial/industrial use only; not suitable for automotive production programs. | Select when cost sensitivity outweighs automotive compliance requirements and lifecycle traceability. |
| SZBZX84C24LT1G | Standard-tolerance version (22.8–25.6 V, ±5.8%) with identical package and power rating. | Acceptable where 24 V regulation stability >±5% is sufficient, e.g., non-critical biasing or coarse clamping. | Choose for general-purpose designs where tighter tolerance is unnecessary and BOM simplification is prioritized. |
Compared with BZX84B24LT1G and SZBZX84C24LT1G, the SZBZX84B24LT1G uniquely combines automotive qualification, ±2.1% voltage tolerance, and 16.8 mV/°C tempco - making it the only option for AEC-compliant 24 V reference designs requiring sub-0.5% total error over temperature.
Availability
SZBZX84B24LT1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical device power monitoring requiring stable component supply with full AEC-Q101 documentation and PPAP support.
Supply support for SZBZX84B24LT1G 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 BZX84/SZBZX84 series targets compact, high-reliability voltage regulation in space-constrained systems - designed specifically for portable electronics, automotive subsystems, and industrial controls needing certified Zener references.
FAQ
What is the Zener voltage tolerance of SZBZX84B24LT1G?
The SZBZX84B24LT1G has a Zener voltage tolerance of ±2.1%, specified as 23.5 V minimum to 24.5 V maximum at 5 mA test current (IZT). This tight tolerance is defined in the BZX84BxxxL tight-tolerance series and distinguishes it from the standard-tolerance C-series variants. The value is measured under pulse test conditions at 25°C ambient temperature.
Is SZBZX84B24LT1G qualified for automotive applications?
Yes, SZBZX84B24LT1G is AEC-Q101 qualified and PPAP capable, meeting automotive reliability standards for use in body electronics, chassis, and ADAS subsystems. The "SZ" prefix explicitly denotes parts manufactured under automotive-specific process controls and site qualifications - confirmed in the onsemi datasheet revision 23, page 1.
What is the maximum power dissipation for SZBZX84B24LT1G?
SZBZX84B24LT1G is rated for 250 mW total power dissipation on FR-5 board at 25°C ambient temperature, with thermal derating of 2.0 mW/°C above that point. On alumina substrate, it supports up to 300 mW at 25°C. These ratings assume proper PCB copper area and layout per onsemi's thermal guidelines.
Does SZBZX84B24LT1G have an ESD rating?
Yes, SZBZX84B24LT1G has an ESD rating of Class 3 (>16 kV) per Human Body Model (HBM), as stated in the Features section of the onsemi datasheet. This level of ESD robustness eliminates the need for additional external protection in most handheld and automotive assembly environments.
What is the pin configuration of SZBZX84B24LT1G?
SZBZX84B24LT1G uses the SOT-23 package with pinout: Pin 1 = Anode, Pin 2 = No Connection (unbonded), Pin 3 = Cathode. This configuration is explicitly defined in the Mechanical Characteristics section and confirmed in the "STYLE 8" marking diagram on page 2 of the datasheet.
SZBZX84B24LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84BxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- 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)
SZBZX84B24LT1G FAQ
1.How can I place an order for SZBZX84B24LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84B24LT1G 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 SZBZX84B24LT1G reliable?
The price and inventory of SZBZX84B24LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84B24LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84B24LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84B24LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84B24LT1G?
SZBZX84B24LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84B24LT1G 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 SZBZX84B24LT1G?
For technical support, including SZBZX84B24LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84B24LT1G requirements.
6.How does Aetrix verify that SZBZX84B24LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84B24LT1G 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 SZBZX84B24LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84B24LT1G?
All SZBZX84B24LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84B24LT1G, 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 SZBZX84B24LT1G part is unused and in its original packaging.
Return procedure for SZBZX84B24LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84B24LT1G 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…
