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Vishay General Semiconductor - Diodes Division BZT52B7V5-G3-18
- Part No.:
- BZT52B7V5-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52B7V5-G3-18.pdf
- Description:
- DIODE ZENER 7.5V 410MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,990
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Product details
Overview
BZT52B7V5-G3-18 from Vishay Semiconductors is a silicon planar Zener diode with nominal zener voltage 7.5 V, ±2 % tolerance, and SOD-123 surface-mount package. It delivers stable voltage regulation at 5 mA test current, exhibits 7 Ω dynamic resistance, and supports operating temperatures from –55 °C to +150 °C. It is used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the BZT52B7V5-G3-18 datasheet, BZT52B7V5-G3-18 pinout, BZT52B7V5-G3-18 application, or BZT52B7V5-G3-18 equivalent, key selection criteria include zener voltage tolerance (±2 %), thermal resistance junction-to-ambient (420 K/W on FR-4), maximum power dissipation (300 mW on board), and cathode-marked unidirectional polarity.
Technical Context
This device operates as a single-element, unidirectional voltage reference diode with reverse-biased zener breakdown behavior. Its 7.5 V nominal zener voltage is specified at 5 mA test current (IZT1), with dynamic resistance of 7 Ω and temperature coefficient of +3 to +7 × 10⁻⁴/°C - indicating positive drift above 6 V.
The SOD-123 package enables compact PCB layout with MSL level 1 moisture sensitivity and peak reflow compatibility up to 260 °C. It is not AEC-Q101 qualified per ordering code suffix "G3-18", and features UL 94 V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 7.5 V nominal, 7.35–7.65 V range at 5 mA - enables tight regulation in feedback networks |
| Tolerance | ±2 % - tighter than standard ±5 % parts, reducing calibration margin requirements |
| Dynamic Resistance | 7 Ω at 5 mA - low impedance improves load regulation and noise rejection |
| Power Dissipation | 300 mW on FR-4 board - defines max continuous current (≈40 mA at 7.5 V) with thermal derating |
| Temp. Coefficient | +3 to +7 × 10⁻⁴/°C - positive drift allows predictable compensation in temp-stable references |
| Reverse Leakage | <100 nA at 5 V - ensures minimal quiescent current in high-impedance bias networks |
| Package | SOD-123 - 2.7 × 1.55 mm footprint, cathode bar marking, JEDEC-compliant soldering footprint |
Pinout & Package
SOD-123 surface-mount package: 2-terminal, anode/cathode configuration; cathode identified by molded bar; 10.6 mg weight; UL 94 V-0 flammability rating; MSL level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes forward conduction path and zener reference polarity |
| Cathode | Zener output node | Provides regulated 7.5 V when reverse biased; marked by molded bar; connects to feedback or clamp point |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % zener voltage tolerance | Reduces need for post-production trimming in precision reference designs |
| 7 Ω dynamic resistance at 5 mA | Minimizes output voltage shift under varying load current in shunt regulator topologies |
| +3 to +7 × 10⁻⁴/°C tempco | Enables predictable thermal drift compensation when paired with negative-tempco components |
| SOD-123 package with MSL level 1 | Supports standard reflow assembly without dry-pack or baking requirements |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and consumer end-equipment certifications |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost DC/DC converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener reference node for TL431-like comparator input or direct feedback to controller error amplifier. Use Value: ±2 % tolerance and 7 Ω dynamic resistance ensure <±1 % output voltage accuracy across line/load/temperature. | Use Scenario: Protecting microcontroller I/O pins or ADC inputs from transient overvoltage events. IC Role / Device Role / Timing Role: Shunt clamping element that conducts above 7.5 V to limit voltage excursion. Use Value: Low 7 Ω impedance ensures rapid clamping response and limits peak voltage to ≤8.2 V at 10 mA surge. |
| Low-Power Voltage Reference | Current Source Biasing |
Use Scenario: Generating stable 7.5 V bias for op-amp rails or sensor excitation in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision shunt reference providing fixed voltage independent of supply variation. Use Value: 100 nA max reverse leakage at 5 V preserves battery life; +3 to +7 × 10⁻⁴/°C tempco enables <0.1 %/°C drift compensation. | Use Scenario: Setting constant current in LED driver or transducer bias circuits using resistor-Zener combination. IC Role / Device Role / Timing Role: Stable voltage node defining current through series resistor (e.g., 7.5 V / 1 kΩ = 7.5 mA). Use Value: Tight ±2 % tolerance ensures current accuracy within ±2 %; low dynamic resistance maintains stability under load modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C7V5-G3-18 | Same package and 7.5 V nominal, but ±5 % tolerance (vs. ±2 %) | Acceptable where calibration or wider regulation margin is permitted | Select for cost-sensitive designs where tighter tolerance is unnecessary |
| MMBZ5227BS-7-F | SOD-323 package, 3.3 V nominal, ±5 %, 100 mW Ptot - not voltage- or package-compatible | Only suitable for lower-voltage, lower-power reference needs | Not a functional substitute; consider only if redesigning for smaller footprint and lower voltage |
Compared with BZT52B7V5-G3-18, BZT52C7V5-G3-18 offers identical form and fit but sacrifices regulation precision, while MMBZ5227BS-7-F requires PCB layout change and cannot replicate the 7.5 V ±2 % performance in existing designs.
Availability
BZT52B7V5-G3-18 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, low-power voltage reference, and current source biasing applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZT52B7V5-G3-18 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
Vishay Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability diodes, MOSFETs, and resistors for industrial, automotive, and computing markets.
The BZT52-G Series targets cost-effective, space-constrained voltage regulation and protection functions in commercial-grade power management and signal conditioning circuits.
FAQ
What is the zener voltage tolerance of BZT52B7V5-G3-18?
The BZT52B7V5-G3-18 has a zener voltage tolerance of ±2 %, verified at 25 °C with 5 mA test current. This is indicated by the "B" in the part number (as opposed to "C" for ±5 %). The actual measured range is 7.35 V to 7.65 V, making it suitable for applications demanding tighter regulation than standard Zener diodes.
Does BZT52B7V5-G3-18 meet AEC-Q101 qualification?
No, BZT52B7V5-G3-18 is not AEC-Q101 qualified. The "G3" suffix denotes green, commercial-grade packaging, and the datasheet explicitly states AEC-Q101 qualification is available only upon request for specific part numbers - not included in the BZT52B7V5-G3-18 ordering code. For automotive applications, consult Vishay for qualified variants.
What is the maximum power dissipation of BZT52B7V5-G3-18 on a standard FR-4 PCB?
The maximum power dissipation of BZT52B7V5-G3-18 on an FR-4 board with the recommended soldering footprint is 300 mW at 25 °C ambient. This value derates linearly above 25 °C at a rate defined by its thermal resistance junction-to-ambient (420 K/W), reaching zero dissipation at approximately 100 °C ambient.
How is polarity marked on the BZT52B7V5-G3-18 SOD-123 package?
The BZT52B7V5-G3-18 uses a molded cathode bar on the SOD-123 package to indicate polarity. The cathode terminal is the end with the bar; the anode is the opposite end. This marking aligns with JEDEC-standard orientation and must be observed during placement to ensure correct reverse-bias operation as a Zener reference.
What is the dynamic resistance of BZT52B7V5-G3-18 and why does it matter?
The dynamic resistance of BZT52B7V5-G3-18 is 7 Ω at 5 mA test current. This parameter quantifies how much the zener voltage changes per unit change in current - lower values mean better regulation under varying load conditions. In practice, this enables tighter output voltage control in shunt regulator and feedback applications where current may fluctuate.
BZT52B7V5-G3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZT52-G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 410 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52B7V5-G3-18 FAQ
1.How can I place an order for BZT52B7V5-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52B7V5-G3-18 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 BZT52B7V5-G3-18 reliable?
The price and inventory of BZT52B7V5-G3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52B7V5-G3-18 is usually 5 days.
3.What payment methods are accepted for BZT52B7V5-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52B7V5-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52B7V5-G3-18?
BZT52B7V5-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52B7V5-G3-18 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 BZT52B7V5-G3-18?
For technical support, including BZT52B7V5-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52B7V5-G3-18 requirements.
6.How does Aetrix verify that BZT52B7V5-G3-18 is sourced from the original manufacturer or authorized distributors?
All BZT52B7V5-G3-18 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 BZT52B7V5-G3-18 meets industry standards.
7.What is the process for return or replacement of BZT52B7V5-G3-18?
All BZT52B7V5-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52B7V5-G3-18, 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 BZT52B7V5-G3-18 part is unused and in its original packaging.
Return procedure for BZT52B7V5-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52B7V5-G3-18 Tags
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