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onsemi SZBZX84C7V5LT1G
- Part No.:
- SZBZX84C7V5LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C7V5LT1G.pdf
- Description:
- DIODE ZENER 7.5V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:17,510
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Product details
Overview
SZBZX84C7V5LT1G from onsemi is a 7.5 V ±5% Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board, with 15 Ω dynamic impedance at 5 mA test current and 1 μA reverse leakage at 5 V. It provides precision voltage regulation in space-constrained portable electronics and high-density PCBs.
For engineers reviewing the SZBZX84C7V5LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (500 °C/W), ESD rating (>16 kV HBM), and AEC-Q101 qualification for automotive use.
Technical Context
This device operates as a two-terminal voltage reference using controlled reverse-biased avalanche breakdown. Its nominal 7.5 V Zener voltage is specified at 5 mA test current (IZT), with temperature coefficient of +2.5 mV/°C and capacitance of 140 pF at 0 V bias and 1 MHz.
The SOT-23 package features cathode-indicated polarity band, Pb-free construction, UL 94 V-0 flammability rating, and maximum soldering temperature of 260°C for 10 seconds. Pin 2 is internally unconnected - only pins 1 (anode) and 3 (cathode) are electrically active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 7.0–7.9 V at 5 mA; enables stable 7.5 V reference under typical bias conditions |
| Power Dissipation | 250 mW on FR-5 board; defines maximum continuous power handling without derating |
| Zener Impedance | 15 Ω at 5 mA; ensures low output impedance for effective ripple suppression |
| Reverse Leakage | 1 μA at 5 V; guarantees minimal quiescent current in standby regulation circuits |
| Temperature Coefficient | +2.5 mV/°C; indicates positive drift, requiring compensation in wide-temperature designs |
| Capacitance | 140 pF at 0 V, 1 MHz; impacts high-frequency noise filtering and signal integrity |
| ESD Rating | Class 3 (>16 kV HBM); supports robust handling in automated assembly and end-use environments |
Pinout & Package
SZBZX84C7V5LT1G uses the SOT-23 (TO-236) surface-mount package, measuring 2.90 × 1.30 × 1.00 mm, with void-free thermosetting plastic case and corrosion-resistant, solderable finish. Cathode is marked by a polarity band on the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during Zener operation |
| 2 | No Connection | Internally unconnected; no electrical function or PCB trace required |
| 3 | Cathode | Connected to higher-potential node; defines regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control units and infotainment power rails |
| 250 mW Power Rating | Enables compact voltage clamping in battery-powered devices without heatsinking |
| Tight Thermal Resistance | 500 °C/W junction-to-ambient allows operation up to +150°C junction temperature |
| Pb-Free & RoHS Compliant | Meets global environmental regulations and supports lead-free reflow soldering profiles |
| High ESD Robustness | Withstands >16 kV human-body-model discharge, reducing failure risk in handling and field use |
Applications
| USB Power Protection | Automotive Sensor Biasing |
|---|---|
Use Scenario: Clamping transient overvoltage on USB VBUS line during hot-plug events or ESD strikes. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing fast-response voltage limiting at 7.5 V threshold. Use Value: Prevents damage to downstream USB controllers by diverting surge current before reaching 8 V, leveraging 1 μA leakage and 15 Ω Zz for precise clamping. |
Use Scenario: Supplying stable bias voltage to analog sensor front-ends in engine control modules. IC Role / Device Role / Timing Role: Precision Zener reference establishing fixed 7.5 V rail for op-amp excitation and ADC reference scaling. Use Value: Maintains <±1% output stability across −40°C to +125°C ambient due to AEC-Q101 qualification and +2.5 mV/°C TC, ensuring sensor accuracy. |
| Portable Device LDO Feedback | Industrial I/O Module Clamp |
Use Scenario: Setting regulated output voltage in low-power LDO feedback networks for wearables and IoT nodes. IC Role / Device Role / Timing Role: Passive voltage reference element defining setpoint for error amplifier in adjustable LDO topology. Use Value: Delivers 7.5 V reference with 5% tolerance and 140 pF capacitance, minimizing phase shift in feedback loop while enabling ultra-small layout. |
Use Scenario: Protecting 24 V industrial digital input circuits against induced surges and back-EMF from relay coils. IC Role / Device Role / Timing Role: Standby-mode shunt clamp absorbing transient energy before it reaches PLC input stage. Use Value: Absorbs up to 250 mW surge energy with <1 μA standby current, preserving system efficiency while meeting IEC 61000-4-5 Level 3 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C7V5LT1G | Standard tolerance (±5%), non-automotive grade, same SOT-23 package and 7.5 V nominal | Lacks AEC-Q101 qualification and PPAP capability; suitable for commercial-grade designs only | Select when automotive compliance is not required and cost sensitivity favors standard-grade variant |
| SZBZX84B7V5LT1G | Tight tolerance (±1.5%), identical AEC-Q101 qualification, same thermal and ESD specs | Higher precision enables tighter regulation in feedback loops but at premium cost | Choose when reference stability <±1% is critical, e.g., precision ADC references or closed-loop power control |
Compared with SZBZX84C7V5LT1G, BZX84C7V5LT1G offers identical electrical behavior without automotive validation, while SZBZX84B7V5LT1G improves voltage tolerance to ±1.5% at the expense of higher unit cost - enabling trade-offs between regulatory compliance, precision, and BOM cost.
Availability
SZBZX84C7V5LT1G is available at Aetrix Electronics and suitable for USB power protection, automotive sensor biasing, and portable device LDO feedback requiring stable component supply with automotive-grade reliability and consistent parametric performance.
Supply support for SZBZX84C7V5LT1G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
SZBZX84C7V5LT1G belongs to the SZBZX84CxxxLT1G series of AEC-Q101-qualified Zener regulators designed specifically for automotive and high-reliability industrial applications demanding robust voltage reference and transient suppression.
FAQ
What is the Zener voltage tolerance of SZBZX84C7V5LT1G?
The SZBZX84C7V5LT1G has a nominal Zener voltage of 7.5 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 7.0 V and 7.9 V when tested at 5 mA (IZT). This tolerance is defined per the BZX84CxxxLT1 series standard specification and applies across the full operating temperature range of −65°C to +150°C.
Is SZBZX84C7V5LT1G suitable for automotive applications?
Yes, SZBZX84C7V5LT1G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications such as engine control units, body electronics, and infotainment systems. The "SZ" prefix explicitly denotes compliance with automotive-specific site and process controls, and the device meets stringent reliability and stress-test requirements defined in the AEC-Q101 standard.
What is the thermal resistance of SZBZX84C7V5LT1G on FR-5 board?
The junction-to-ambient thermal resistance (RJA) of SZBZX84C7V5LT1G is 500 °C/W when mounted on an FR-5 board. This value assumes standard JEDEC test conditions (1.0 × 0.75 × 0.62 inch board) and directly determines the allowable power dissipation before exceeding the maximum junction temperature of +150°C.
Does SZBZX84C7V5LT1G have a functional third pin?
No, SZBZX84C7V5LT1G has only two active terminals: pin 1 (anode) and pin 3 (cathode). Pin 2 is internally unconnected (NC), as confirmed in the datasheet's pinout diagrams and electrical characteristics tables. PCB layout must treat pin 2 as a floating pad with no electrical connection required.
What is the maximum reverse leakage current for SZBZX84C7V5LT1G?
The maximum reverse leakage current (IR) for SZBZX84C7V5LT1G is 1 μA at a reverse voltage (VR) of 5 V and ambient temperature of 25°C. This low leakage supports energy-efficient operation in battery-powered systems and ensures minimal loading on upstream voltage sources during standby conditions.
SZBZX84C7V5LT1G 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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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)
SZBZX84C7V5LT1G FAQ
1.How can I place an order for SZBZX84C7V5LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C7V5LT1G 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 SZBZX84C7V5LT1G reliable?
The price and inventory of SZBZX84C7V5LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C7V5LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C7V5LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C7V5LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C7V5LT1G?
SZBZX84C7V5LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C7V5LT1G 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 SZBZX84C7V5LT1G?
For technical support, including SZBZX84C7V5LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C7V5LT1G requirements.
6.How does Aetrix verify that SZBZX84C7V5LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C7V5LT1G 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 SZBZX84C7V5LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C7V5LT1G?
All SZBZX84C7V5LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C7V5LT1G, 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 SZBZX84C7V5LT1G part is unused and in its original packaging.
Return procedure for SZBZX84C7V5LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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