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onsemi SZBZX84C7V5LT3G
- Part No.:
- SZBZX84C7V5LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C7V5LT3G.pdf
- Description:
- DIODE ZENER 7.5V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
SZBZX84C7V5LT3G from onsemi is a 7.5 V ±5% Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C on FR-5 board, with 15 Ω dynamic impedance at 5 mA test current and 1 μA reverse leakage at 5 V. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the SZBZX84C7V5LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (500 °C/W), ESD rating (>16 kV HBM), capacitance (140 pF at 0 V), and automotive qualification per AEC-Q101.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable 7.5 V regulation across load and line variations. Its temperature coefficient of +2.5 mV/°C ensures predictable drift over −65°C to +150°C junction range.
The SOT-23 package features cathode-indicated polarity band, Pb-free construction, UL 94 V-0 flammability rating, and 260°C soldering tolerance 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; nominal 7.5 V with ±5% tolerance for stable reference generation |
| Power Dissipation | 250 mW on FR-5 board at 25°C; derates 2.0 mW/°C above ambient - limits continuous regulation current to ~33 mA |
| Zener Impedance | 15 Ω at 5 mA; ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage | 1 μA max at 5 V; enables low-quiescent-current bias networks without significant error |
| Capacitance | 140 pF at 0 V, 1 MHz; impacts high-frequency noise filtering and transient response in clamping circuits |
| ESD Rating | Class 3 (>16 kV HBM); supports robust handling in automated assembly and end-use environments |
| Temperature Coefficient | +2.5 mV/°C at 5 mA; allows predictable voltage shift compensation in wide-temperature designs |
Pinout & Package
Package: SOT-23 (TO-236), 2.90 × 1.30 × 1.00 mm, void-free thermosetting plastic case with corrosion-resistant, solderable finish. Cathode identified by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during regulation - must be held ≤7.5 V below cathode |
| 2 | No Connection | Internally unconnected; no PCB trace or pad required - floating terminal with no electrical function |
| 3 | Cathode | Connected to regulated voltage rail; source of reference potential - carries full Zener current during operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including infotainment power rails and sensor biasing |
| Pb-free & RoHS compliant | Meets global environmental regulations and reflow compatibility requirements for lead-free assembly |
| Tight thermal resistance control | 500 °C/W junction-to-ambient enables predictable thermal design in compact layouts |
| High ESD immunity | Class 3 Human Body Model (>16 kV) reduces risk of field failure in handheld and portable systems |
| Optimized for high-density mounting | SOT-23 footprint supports >10,000 units/reel tape-and-reel delivery and fine-pitch automated placement |
Applications
| Portable Power Management | Automotive Sensor Biasing |
|---|---|
|
Use Scenario: Providing stable 7.5 V reference for ADCs and comparators in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precise analog input scaling point. Use Value: Enables <1% measurement accuracy over temperature due to known +2.5 mV/°C TC and low 15 Ω impedance. |
Use Scenario: Clamping supply transients on 12 V CAN node microcontroller I/O lines. IC Role / Device Role / Timing Role: Overvoltage protection device shunting surge energy to ground during load dump events. Use Value: Withstands >16 kV ESD and regulates at 7.5 V to protect downstream logic without crowbar action. |
| Consumer Audio DC Bias | Industrial PLC Input Conditioning |
|
Use Scenario: Generating clean bias voltage for op-amp input stages in headphone amplifiers. IC Role / Device Role / Timing Role: Low-noise voltage reference stabilizing amplifier operating point against supply ripple. Use Value: 140 pF capacitance and 1 μA leakage minimize signal path distortion and DC offset drift. |
Use Scenario: Level-shifting and protecting 24 V digital inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Interface protection component limiting input voltage to safe MCU thresholds. Use Value: AEC-Q101 qualification ensures reliability in harsh industrial environments with wide temperature cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C7V5LT3G | Standard tolerance (±5%), same SOT-23 package, non-automotive grade | Lacks AEC-Q101 qualification; suitable for commercial-grade consumer products | Select when automotive qualification is unnecessary and cost sensitivity is higher |
| SZBZX84B7V5LT3G | Tighter tolerance (±1.5%), identical package and thermal specs, same AEC-Q101 qualification | Better voltage stability for precision references where ±5% is insufficient | Choose when reference accuracy dominates over cost and standard tolerance is inadequate |
Compared with SZBZX84C7V5LT3G, BZX84C7V5LT3G offers identical electrical behavior but omits automotive qualification, while SZBZX84B7V5LT3G improves voltage tolerance at the expense of higher unit cost - enabling trade-offs between accuracy, compliance, and budget.
Availability
SZBZX84C7V5LT3G is available at Aetrix Electronics and suitable for portable power management, automotive sensor biasing, and industrial PLC input conditioning requiring stable component supply across production lifecycles.
Supply support for SZBZX84C7V5LT3G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
SZBZX84C7V5LT3G belongs to the SZBZX84CxxxLT3G series - engineered for space-constrained, high-reliability voltage regulation in automotive and industrial systems where AEC-Q101 compliance and Pb-free assembly are mandatory.
FAQ
What is the Zener voltage tolerance of SZBZX84C7V5LT3G?
SZBZX84C7V5LT3G 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. This tolerance is specified per the BZX84Cxxx standard series and confirmed in the onsemi datasheet revision 23, page 3.
Is SZBZX84C7V5LT3G qualified for automotive use?
Yes, SZBZX84C7V5LT3G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the onsemi datasheet under "Features" and "Ordering Information." The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements.
What is the maximum power dissipation for SZBZX84C7V5LT3G on an FR-5 board?
SZBZX84C7V5LT3G is rated for 250 mW total power dissipation on FR-5 board at 25°C ambient, with a derating factor of 2.0 mW/°C above that temperature. This corresponds to a thermal resistance of 500 °C/W junction-to-ambient, per the Maximum Ratings table on page 2 of the datasheet.
Does SZBZX84C7V5LT3G have a connected pin 2?
No, pin 2 of SZBZX84C7V5LT3G is internally unconnected (NC), as confirmed in the "Mechanical Characteristics" section and pinout diagrams on pages 2 and 6 of the datasheet. Only pins 1 (anode) and 3 (cathode) are electrically functional.
What is the ESD rating of SZBZX84C7V5LT3G?
SZBZX84C7V5LT3G has an ESD rating of Class 3 (>16 kV) per the Human Body Model (HBM), as documented in the "Features" section of the onsemi datasheet. This rating applies to both handling and operational robustness in end equipment.
SZBZX84C7V5LT3G 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)
SZBZX84C7V5LT3G FAQ
1.How can I place an order for SZBZX84C7V5LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C7V5LT3G 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 SZBZX84C7V5LT3G reliable?
The price and inventory of SZBZX84C7V5LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C7V5LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C7V5LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C7V5LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C7V5LT3G?
SZBZX84C7V5LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C7V5LT3G 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 SZBZX84C7V5LT3G?
For technical support, including SZBZX84C7V5LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C7V5LT3G requirements.
6.How does Aetrix verify that SZBZX84C7V5LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C7V5LT3G 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 SZBZX84C7V5LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C7V5LT3G?
All SZBZX84C7V5LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C7V5LT3G, 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 SZBZX84C7V5LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C7V5LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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