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onsemi BZX84B7V5LT1
- Part No.:
- BZX84B7V5LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B7V5LT1.pdf
- Description:
- DIODE ZENER 7.5V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,156
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Product details
Overview
BZX84B7V5LT1 from onsemi is a tight-tolerance Zener diode in SOT-23 package, delivering precise 7.5 V regulation at 5 mA with ±1% voltage tolerance (7.35–7.65 V), 15 Ω dynamic impedance, and 1 μA reverse leakage at 5 V. It serves as a stable reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the BZX84B7V5LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include its ±1% Zener voltage tolerance, 250 mW power rating on FR-5 board, ESD robustness (>16 kV HBM), and SOT-23 footprint compatibility for high-density PCBs.
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche breakdown in silicon. Its tight 1% tolerance is achieved via process trimming during manufacturing, enabling accurate biasing and feedback sensing without external calibration.
The SOT-23 package features a defined pinout (Pin 1: Anode, Pin 2: No Connection, Pin 3: Cathode) and supports automated placement. Thermal resistance is 500 °C/W on FR-5 board, limiting continuous dissipation to 250 mW at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 7.5 V nominal at 5 mA; tight ±1% tolerance (7.35–7.65 V) enables precision voltage referencing without trimming. |
| Power Rating | 250 mW on FR-5 board; derates linearly above 25°C (2.0 mW/°C), supporting reliable operation in compact enclosures. |
| Zener Impedance | 15 Ω at 5 mA; ensures minimal output voltage variation under load changes in feedback or clamp circuits. |
| Reverse Leakage | 1 μA maximum at 5 V; guarantees low quiescent current in battery-powered systems and high-impedance sensing nodes. |
| Temperature Coefficient | +2.5 mV/°C at 5 mA; provides predictable, positive drift for temperature-compensated designs near room temperature. |
| Capacitance | 140 pF at 0 V, 1 MHz; impacts high-frequency noise filtering and transient response in decoupling applications. |
| ESD Rating | Class 3 (>16 kV) per Human Body Model; withstands handling and system-level ESD events without degradation. |
Pinout & Package
SOT-23 (TO-236) surface-mount package: 2.90 mm × 1.30 mm × 1.00 mm body, 1.90 mm lead pitch, Pb-free, RoHS compliant. Cathode indicated by band; Pin 2 is internally unconnected and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration. |
| Pin 2 | No Connection | Internally isolated; must not be soldered or tied to any net to avoid parasitic coupling or thermal stress. |
| Pin 3 | Cathode | Zener breakdown terminal; connects to higher-potential node and serves as regulated output reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±1% (7.35–7.65 V) at 5 mA - eliminates need for external trimming in precision analog references. |
| Low dynamic impedance | 15 Ω at 5 mA - maintains stable regulation across varying load currents in feedback loops. |
| High ESD robustness | Class 3 (>16 kV HBM) - survives handling and system-level transients without parameter shift or failure. |
| Pb-free & RoHS compliance | Meets global environmental directives - supports green manufacturing and end-of-life recycling requirements. |
| Optimized SOT-23 footprint | Standardized 3-pin layout with Pin 2 NC - enables drop-in replacement and automated assembly on high-density boards. |
Applications
| Portable Power Management | ADC Reference Stabilization |
|---|---|
Use Scenario: Regulating bias voltage for LDO error amplifiers in Bluetooth earbuds. IC Role / Device Role / Timing Role: Zener reference providing stable 7.5 V input to op-amp feedback network. Use Value: ±1% tolerance ensures consistent dropout voltage and load regulation across production units. |
Use Scenario: Supplying reference voltage to 12-bit SAR ADC in handheld medical sensor. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing larger shunt references. Use Value: 15 Ω impedance minimizes code-dependent reference droop during conversion cycles. |
| Overvoltage Clamp Protection | Microcontroller I/O Protection |
Use Scenario: Clamping 12 V supply rail against surge events in automotive body control module. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting excess energy to ground. Use Value: 250 mW rating sustains 100 ms surges up to 15 V without thermal runaway. |
Use Scenario: Protecting GPIO pins of ARM Cortex-M0+ MCU from ESD and bus faults. IC Role / Device Role / Timing Role: Bidirectional clamp (with series resistor) limiting voltage to safe levels. Use Value: >16 kV HBM rating matches IEC 61000-4-2 Level 4 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 | Same 7.5 V nominal, but ±5% tolerance (7.0–7.9 V); higher 30 μA leakage at 5 V. | Acceptable where cost sensitivity outweighs precision; unsuitable for <1% reference needs. | Select when budget constraints dominate and ±5% regulation is sufficient for system margin. |
| SZBZX84B7V5LT1G | Identical electrical specs; AEC-Q101 qualified, PPAP-capable, automotive-grade traceability. | Required for automotive ECUs; unnecessary for consumer portables or industrial controls. | Choose only if automotive qualification, extended temperature validation, or change-controlled sourcing is mandated. |
Compared with BZX84B7V5LT1, BZX84C7V5LT1G trades precision for cost, while SZBZX84B7V5LT1G adds automotive compliance overhead without electrical benefit - making BZX84B7V5LT1 optimal for non-automotive precision regulation.
Availability
BZX84B7V5LT1 is available at Aetrix Electronics and suitable for portable power management, ADC reference stabilization, and overvoltage clamp protection requiring stable component supply, consistent parametric performance, and SOT-23 footprint compatibility.
Supply support for BZX84B7V5LT1 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 electronics, with leadership in automotive, industrial, cloud, and IoT solutions.
The BZX84BxxxLT1G series targets space-constrained, low-power applications demanding tight-tolerance voltage regulation - especially in handheld portables, wearables, and high-density PC boards.
FAQ
What is the Zener voltage tolerance of BZX84B7V5LT1?
The BZX84B7V5LT1 has a tight ±1% Zener voltage tolerance, specified as 7.35 V minimum to 7.65 V maximum at 5 mA test current. This precision is achieved through factory trimming and distinguishes it from standard-tolerance variants like the BZX84C7V5LT1G. The BZX84B7V5LT1 delivers repeatable regulation critical for reference and feedback applications.
Does BZX84B7V5LT1 have a connection on Pin 2?
No, Pin 2 of the BZX84B7V5LT1 is internally unconnected (NC) and must remain electrically floating in the PCB layout. The device uses only Pins 1 (Anode) and 3 (Cathode) for operation. Soldering or routing to Pin 2 may introduce parasitic capacitance or thermal stress and is strictly prohibited per onsemi's mechanical specifications.
What is the maximum power dissipation of BZX84B7V5LT1 on FR-5 board?
The BZX84B7V5LT1 is rated for 250 mW total power dissipation on FR-5 board at 25°C ambient temperature. Above 25°C, it derates linearly at 2.0 mW/°C, reaching zero dissipation at 150°C junction temperature. This rating assumes standard JEDEC-defined board conditions and defines the safe operating area for continuous DC or pulsed regulation use.
Is BZX84B7V5LT1 RoHS compliant and Pb-free?
Yes, the BZX84B7V5LT1 is Pb-free and fully RoHS compliant, as confirmed in onsemi's official datasheet and packaging documentation. The "G" suffix in alternate part numbers (e.g., BZX84B7V5LT1G) explicitly denotes Pb-free construction, and the device meets EU Directive 2011/65/EU requirements for hazardous substance restrictions.
How does the temperature coefficient affect BZX84B7V5LT1 performance?
The BZX84B7V5LT1 exhibits a +2.5 mV/°C temperature coefficient at 5 mA, meaning its Zener voltage increases by approximately 2.5 mV per degree Celsius rise in junction temperature. This predictable positive drift allows designers to compensate for thermal effects in precision references or select complementary components for zero-TC designs.
BZX84B7V5LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84BxxxLT1
- 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:
- ±2%
- 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)
BZX84B7V5LT1 FAQ
1.How can I place an order for BZX84B7V5LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B7V5LT1 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 BZX84B7V5LT1 reliable?
The price and inventory of BZX84B7V5LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B7V5LT1 is usually 5 days.
3.What payment methods are accepted for BZX84B7V5LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B7V5LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B7V5LT1?
BZX84B7V5LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B7V5LT1 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 BZX84B7V5LT1?
For technical support, including BZX84B7V5LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B7V5LT1 requirements.
6.How does Aetrix verify that BZX84B7V5LT1 is sourced from the original manufacturer or authorized distributors?
All BZX84B7V5LT1 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 BZX84B7V5LT1 meets industry standards.
7.What is the process for return or replacement of BZX84B7V5LT1?
All BZX84B7V5LT1 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B7V5LT1, 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 BZX84B7V5LT1 part is unused and in its original packaging.
Return procedure for BZX84B7V5LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B7V5LT1 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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