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onsemi BZX84C7V5LT1
- Part No.:
- BZX84C7V5LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C7V5LT1.pdf
- Description:
- DIODE ZENER 7.5V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,674
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Product details
Overview
BZX84C7V5LT1 from onsemi is a 7.5 V, ±5% tolerance 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. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the BZX84C7V5LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (7.5 V), tolerance (±5%), thermal resistance (556 °C/W), ESD rating (>16 kV HBM), and SOT-23 footprint compatibility with automated assembly.
Technical Context
This device operates in reverse breakdown to maintain stable voltage across its cathode-anode terminals under varying load or supply conditions. Its 7.5 V nominal Zener voltage is specified at 5 mA test current (IZT1), 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 three terminals: anode (Pin 1), no connection (Pin 2), and cathode (Pin 3), enabling unidirectional voltage regulation without series resistance dependency in low-current biasing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 7.0–7.9 V at 5 mA; ensures stable 7.5 V reference within ±5% tolerance under typical bias |
| Power Dissipation | 225 mW on FR-5 board at 25°C; defines maximum continuous power before thermal derating begins |
| Zener Impedance | 15 Ω at 5 mA; indicates low AC impedance for effective ripple suppression in regulation paths |
| Reverse Leakage | 1 µA at 5 V; confirms minimal standby current in clamping or reference configurations |
| Capacitance | 140 pF at 0 V, 1 MHz; impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| ESD Rating | Class 3 (>16 kV HBM); supports robust handling in manual assembly and end-user environments |
| Temp Coefficient | +2.5 mV/°C at 5 mA; enables predictable voltage drift compensation in temperature-varying applications |
Pinout & Package
SOT-23 plastic surface-mount package (Case 318, Style 8), void-free thermosetting construction, UL 94 V-0 flammability rating, cathode indicated by band, max solder temperature 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during Zener operation |
| 2 | No Connection | Internally unconnected; must remain floating-no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential node; defines regulated output voltage reference point |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free Option | BZX84C7V5LT1G variant available per J-STD-609, supporting RoHS-compliant manufacturing |
| Automated Assembly Optimized | Standard SOT-23 footprint and polarity marking enable reliable pick-and-place and AOI inspection |
| High-Density Packaging | 2.80 × 1.20 × 0.99 mm body size allows placement in space-constrained mobile PCB layouts |
| Tight Thermal Resistance | 556 °C/W junction-to-ambient on FR-5 enables stable operation up to +85°C ambient without heatsinking |
| Low-Leakage Regulation | 1 µA IR at 5 V supports battery-powered systems where quiescent current directly impacts runtime |
Applications
| Smartphone Power Management | USB-C Port Protection |
|---|---|
Use Scenario: Regulating auxiliary rail voltage for PMIC monitoring circuitry in LTE/5G handsets. IC Role / Device Role / Timing Role: Zener reference providing stable 7.5 V threshold for undervoltage lockout comparator input. Use Value: Ensures consistent trip point across temperature and unit-to-unit variation, preventing false shutdowns during battery sag. | Use Scenario: Clamping transient overvoltage on CC line during hot-plug events in USB-C receptacles. IC Role / Device Role / Timing Role: Fast-response shunt element diverting ESD or surge energy above 7.5 V to ground. Use Value: Limits CC line voltage to safe levels (<8 V) within 10 ns, preserving USB PD controller integrity. |
| IoT Sensor Node Reference | Industrial PLC Input Conditioning |
Use Scenario: Supplying precise bias voltage to analog front-end op-amps in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Low-drift voltage reference source for ADC reference buffer and sensor excitation circuitry. Use Value: +2.5 mV/°C TC enables <±10 mV total drift over −40°C to +85°C, meeting 12-bit accuracy requirements. | Use Scenario: Level-shifting and overvoltage protection for 24 V digital input channels in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Series-connected Zener pair (with external resistor) establishing 7.5 V logic-compatible threshold for optocoupler input stage. Use Value: Rejects common-mode transients >1 kV while maintaining clean switching edge for microcontroller GPIO sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C7V5LT3 | Same electrical specs; differs only in tape-and-reel packaging (10,000 pcs vs. 3,000 pcs) | No functional difference; selected for high-volume production runs requiring fewer reel changes | Choose BZX84C7V5LT3 when optimizing for SMT line uptime and minimizing feeder reload frequency |
| BZX84B7V5LT1 | Tighter ±1% tolerance (7.35–7.65 V), same 15 Ω Zz, but higher test current sensitivity and tighter binning cost | Used where absolute voltage accuracy dominates over cost-e.g., calibration references or metrology subsystems | Choose BZX84B7V5LT1 only if system-level testing confirms ±1% tolerance is required to meet specification margins |
Compared with BZX84C7V5LT1, the LT3 variant offers identical performance with higher reel quantity for production efficiency, while the B7V5LT1 delivers tighter voltage control at increased unit cost and reduced availability-making the C7V5LT1 optimal for cost-sensitive, volume consumer applications where ±5% tolerance is sufficient.
Availability
BZX84C7V5LT1 is available at Aetrix Electronics and suitable for smartphone power management, USB-C port protection, and IoT sensor node reference applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for BZX84C7V5LT1 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84C7V5LT1 belongs to the BZX84CxxxLT1 family of standard-tolerance Zener diodes designed specifically for compact, low-power voltage regulation and transient suppression in portable and high-density PCBs.
FAQ
What is the exact Zener voltage range for BZX84C7V5LT1 at 5 mA test current?
The BZX84C7V5LT1 has a guaranteed Zener voltage range of 7.0 V to 7.9 V when measured at IZT = 5 mA and TA = 25°C, corresponding to a nominal 7.5 V with ±5% tolerance as defined in the official onsemi datasheet revision 7.
Does BZX84C7V5LT1 have a functional third pin, and what is its role?
No-BZX84C7V5LT1 has only two active terminals: Pin 1 (anode) and Pin 3 (cathode). Pin 2 is internally unconnected and must remain floating on the PCB; it serves no electrical function and is not used for thermal relief or grounding.
What is the maximum allowable reverse leakage current for BZX84C7V5LT1, and at what voltage is it specified?
The BZX84C7V5LT1 exhibits a maximum reverse leakage current of 1 µA at VR = 5 V, as confirmed in the Electrical Characteristics table on page 3 of the official datasheet-this value ensures minimal standby power loss in battery-critical designs.
Can BZX84C7V5LT1 be used in place of BZX84C6V8LT1 without circuit modification?
No-BZX84C7V5LT1 (7.0–7.9 V) and BZX84C6V8LT1 (6.4–7.2 V) have non-overlapping Zener voltage ranges; substituting them alters regulation thresholds by ≥0.3 V, potentially causing incorrect comparator trips or insufficient clamping margin in safety-critical paths.
Is there a Pb-free version of BZX84C7V5LT1, and how is it designated?
Yes-the Pb-free variant is designated BZX84C7V5LT1G, fully compliant with J-STD-609 and RoHS directives, with identical electrical and thermal specifications to the standard BZX84C7V5LT1, differing only in lead finish composition and marking suffix.
BZX84C7V5LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84CxxxLT1
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
BZX84C7V5LT1 FAQ
1.How can I place an order for BZX84C7V5LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C7V5LT1 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 BZX84C7V5LT1 reliable?
The price and inventory of BZX84C7V5LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C7V5LT1 is usually 5 days.
3.What payment methods are accepted for BZX84C7V5LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C7V5LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C7V5LT1?
BZX84C7V5LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C7V5LT1 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 BZX84C7V5LT1?
For technical support, including BZX84C7V5LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C7V5LT1 requirements.
6.How does Aetrix verify that BZX84C7V5LT1 is sourced from the original manufacturer or authorized distributors?
All BZX84C7V5LT1 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 BZX84C7V5LT1 meets industry standards.
7.What is the process for return or replacement of BZX84C7V5LT1?
All BZX84C7V5LT1 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C7V5LT1, 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 BZX84C7V5LT1 part is unused and in its original packaging.
Return procedure for BZX84C7V5LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C7V5LT1 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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onsemi
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Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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