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onsemi SZBZX84C7V5LT3
- Part No.:
- SZBZX84C7V5LT3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C7V5LT3.pdf
- Description:
- DIODE ZENER 7.5V 225MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:250,000
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Product details
Overview
SZBZX84C7V5LT3 from onsemi is a 7.5 V ±5% Zener diode in SOT-23 package, rated for 225 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, used for voltage regulation in space-constrained portable electronics.
For engineers reviewing the SZBZX84C7V5LT3 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±5%), thermal resistance (556 °C/W), ESD rating (>16 kV HBM), junction temperature range (−65 to +150°C), and Pb-free SOT-23 packaging compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode-anode polarity, utilizing silicon PN-junction Zener breakdown at 7.5 V nominal. Its 15 Ω Zener impedance at 5 mA ensures stable regulation under moderate load variation, while the −65°C to +150°C operating junction temperature range supports automotive and industrial environments.
The SOT-23 package features void-free thermosetting plastic construction, UL 94 V-0 flammability rating, and 260°C/10s maximum soldering temperature. Pin 2 is internally unconnected, confirming true two-terminal functionality without auxiliary control or sensing terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 7.0–7.9 V @ 5 mA; provides precise 7.5 V reference with ±5% tolerance for stable biasing |
| Power Dissipation | 225 mW @ 25°C on FR-5 board; defines maximum continuous DC power handling before thermal derating |
| Zener Impedance | 15 Ω @ 5 mA; low dynamic resistance enables minimal output voltage shift under load current changes |
| Reverse Leakage | 1 μA @ 5 V; ensures negligible standby current in regulation circuits below breakdown threshold |
| Temperature Coefficient | +2.5 mV/°C @ 5 mA; quantifies voltage drift with ambient temperature for thermal stability analysis |
| Capacitance | 140 pF @ 0 V, 1 MHz; impacts high-frequency noise filtering and AC coupling performance |
| ESD Rating | Class 3 (>16 kV) per HBM; supports robust handling in manual and automated assembly without protection circuitry |
Pinout & Package
SOT-23 (Case 318-08) surface-mount package with 3-pin footprint; dimensions: 2.90 mm × 1.30 mm × 1.00 mm (L × W × H); cathode indicated by band; pin 2 is unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | DC input terminal for reverse-bias connection; must be held at lower potential than cathode during regulation |
| 2 | No Connection | Internally isolated; no electrical function; must remain unconnected on PCB |
| 3 | Cathode | DC output/reference terminal; supplies regulated voltage relative to anode; marked by polarity band |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW Power Rating | Enables compact voltage regulation in high-density layouts without external heatsinking on standard FR-5 PCBs |
| ESD Robustness >16 kV | Eliminates need for discrete ESD protection in handheld and portable designs subject to human handling |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment power rails and sensor bias networks |
| Pb-Free Packaging | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 |
| Tight Thermal Resistance | 556 °C/W junction-to-ambient allows operation up to +85°C ambient without derating in typical layouts |
Applications
| Smartphone Power Management | Automotive Cabin Sensors |
|---|---|
Use Scenario: Regulating reference voltage for ADC biasing and LDO feedback networks in battery-powered smartphones. IC Role / Device Role / Timing Role: Two-terminal Zener reference providing stable 7.5 V node independent of supply rail fluctuations. Use Value: Maintains <±1% ADC accuracy over temperature via low 2.5 mV/°C TC and 15 Ω impedance, reducing calibration overhead. | Use Scenario: Supplying precision bias to MEMS pressure and humidity sensors in automotive HVAC modules. IC Role / Device Role / Timing Role: Voltage clamp protecting sensor analog front-end inputs against transients while setting reference level. Use Value: AEC-Q101 qualification ensures reliability across −40°C to +125°C under hood conditions with no derating required. |
| Industrial PLC I/O Modules | Medical Wearable Monitors |
Use Scenario: Providing isolated 7.5 V reference for 4–20 mA loop transmitter current-sense amplifiers. IC Role / Device Role / Timing Role: Zener shunt regulator establishing stable excitation voltage for precision current-source circuitry. Use Value: 1 μA leakage at 5 V prevents loading errors in high-impedance sense paths, preserving 16-bit DAC resolution. | Use Scenario: Stabilizing voltage for low-power ECG front-end instrumentation amplifiers in patch-style monitors. IC Role / Device Role / Timing Role: Low-noise voltage reference enabling sub-μV input-referred noise performance in analog signal chains. Use Value: 140 pF capacitance minimizes high-frequency coupling into sensitive biopotential nodes without added filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C7V5LT3 | Standard tolerance (±5%), 225 mW, SOT-23, non-automotive grade | General-purpose regulation; no AEC-Q101 validation | Select when cost-sensitive consumer designs require basic 7.5 V clamping without automotive qualification |
| SZBZX84C7V5LT3G | Identical electrical specs; Pb-free variant with same SOT-23 footprint and 10,000/reel packaging | Same functional use; differs only in RoHS compliance and moisture sensitivity level | Choose for new designs requiring lead-free compliance and J-STD-020 Level 1 handling |
Compared with BZX84C7V5LT3 and SZBZX84C7V5LT3G, the SZBZX84C7V5LT3 offers identical Zener characteristics and package but includes AEC-Q101 qualification and SZ-prefix traceability for automotive PPAP-making it the sole choice for safety-critical vehicle subsystems where component pedigree is mandated.
Availability
SZBZX84C7V5LT3 is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensors, industrial PLC I/O modules, and medical wearable monitors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZBZX84C7V5LT3 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZBZX84CxxxLT3 series belongs to onsemi's automotive-qualified Zener regulator product line, engineered specifically for voltage reference and transient suppression in harsh-environment electronic control units.
FAQ
What is the nominal Zener voltage and tolerance of SZBZX84C7V5LT3?
The SZBZX84C7V5LT3 has a nominal Zener voltage of 7.5 V with a tolerance of ±5%, specified as 7.0 V minimum to 7.9 V maximum at 5 mA test current. This tolerance band is confirmed in the Electrical Characteristics table on page 3 of the official datasheet, and the "C" suffix denotes standard tolerance grading. The SZBZX84C7V5LT3 maintains this specification across its full operating temperature range.
Does SZBZX84C7V5LT3 have AEC-Q101 qualification?
Yes, SZBZX84C7V5LT3 is explicitly AEC-Q101 qualified and PPAP capable, as stated in the Features section of the datasheet. This qualification validates its suitability for automotive applications including engine control, body electronics, and ADAS subsystems. The "SZ" prefix indicates compliance with automotive-specific site and process controls, distinguishing it from commercial-grade BZX84C7V5LT3 variants.
What is the thermal resistance and power derating behavior of SZBZX84C7V5LT3?
SZBZX84C7V5LT3 has a junction-to-ambient thermal resistance of 556 °C/W on FR-5 board, with 225 mW total power dissipation at 25°C. Power must be linearly derated by 1.8 mW/°C above 25°C ambient, reaching zero dissipation at approximately 147°C. These values are defined in the Maximum Ratings table and apply strictly to standard FR-5 PCB mounting per the datasheet's Note 1.
How is the pinout configured for SZBZX84C7V5LT3, and what is the role of pin 2?
SZBZX84C7V5LT3 uses a 3-pin SOT-23 package with pinout: 1 = Anode, 2 = No Connection, 3 = Cathode. Pin 2 is internally unconnected and must remain floating on the PCB layout. This configuration is confirmed in both the Marking Diagram and Electrical Characteristics sections of the datasheet, ensuring correct reverse-bias orientation for Zener operation between pins 1 and 3.
What is the reverse leakage current specification for SZBZX84C7V5LT3 at 5 V?
The reverse leakage current for SZBZX84C7V5LT3 is specified as 1 μA maximum at VR = 5 V, per the Electrical Characteristics table on page 3. This parameter defines the off-state current when the device is biased below its Zener breakdown threshold and directly impacts quiescent power loss in always-on regulation circuits.
SZBZX84C7V5LT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 225 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)
SZBZX84C7V5LT3 FAQ
1.How can I place an order for SZBZX84C7V5LT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C7V5LT3 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 SZBZX84C7V5LT3 reliable?
The price and inventory of SZBZX84C7V5LT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C7V5LT3 is usually 5 days.
3.What payment methods are accepted for SZBZX84C7V5LT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C7V5LT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C7V5LT3?
SZBZX84C7V5LT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C7V5LT3 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 SZBZX84C7V5LT3?
For technical support, including SZBZX84C7V5LT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C7V5LT3 requirements.
6.How does Aetrix verify that SZBZX84C7V5LT3 is sourced from the original manufacturer or authorized distributors?
All SZBZX84C7V5LT3 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 SZBZX84C7V5LT3 meets industry standards.
7.What is the process for return or replacement of SZBZX84C7V5LT3?
All SZBZX84C7V5LT3 units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C7V5LT3, 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 SZBZX84C7V5LT3 part is unused and in its original packaging.
Return procedure for SZBZX84C7V5LT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C7V5LT3 Tags
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