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Diodes Incorporated BZT585B2V7T-7
- Part No.:
- BZT585B2V7T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B2V7T-7.pdf
- Description:
- DIODE ZENER 2.7V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:10,002
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Product details
Overview
BZT585B2V7T-7 from Diodes Incorporated is a precision surface-mount Zener diode with nominal 2.7 V breakdown voltage (±2.0% tolerance), 350 mW power dissipation, and SOD523 package. It provides stable voltage reference and overvoltage protection in low-power analog circuits, battery monitoring, and voltage-clamping applications where tight regulation and small footprint are required.
For engineers reviewing the BZT585B2V7T-7 datasheet, BZT585B2V7T-7 pinout, BZT585B2V7T-7 application, or BZT585B2V7T-7 equivalent, key selection criteria include Zener voltage tolerance (±2.0%), low dynamic impedance (450 Ω at 1 mA), negative temperature coefficient (−1.4 mV/°C), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals under varying current conditions. Its 2.7 V nominal Zener voltage is specified at 5 mA test current, with dynamic impedance of 450 Ω at 1 mA and 100 Ω at 5 mA - critical for low-noise regulation stability.
The device features a −1.4 mV/°C temperature coefficient, enabling predictable drift compensation in temperature-sensitive references. Its SOD523 package supports high power density (350 mW) with low thermal resistance (357 °C/W) on FR-4 PCBs using Diodes Incorporated's recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal, 2.65–2.75 V range at 5 mA - ensures tight regulation for 2.7 V rail sensing and clamping |
| Power Dissipation (PD) | 350 mW - supports continuous operation in space-constrained PCB layouts without forced cooling |
| Zener Impedance (ZZT) | 100 Ω at 5 mA - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | 20 µA max at 1 V - guarantees low quiescent current in battery-powered voltage monitor circuits |
| Temperature Coefficient | −1.4 mV/°C - enables predictable voltage drift correction in industrial temperature ranges (−65 to +150 °C) |
| Capacitance (CT) | 440 pF at 0 V, 1 MHz - limits high-frequency noise coupling in signal-path clamping applications |
Pinout & Package
Package: SOD523 - ultra-small, flat-lead surface-mount package (1.6 × 0.8 × 0.6 mm), RoHS-compliant, halogen-free, qualified to AEC-Q101.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias configuration; used for forward-voltage testing (0.9 V @ 10 mA) |
| Cathode (marked with band) | Zener breakdown terminal | Connected to higher-potential node; defines polarity for voltage reference and clamping function |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Reduces need for post-production trimming in precision reference designs |
| AEC-Q101 qualification | Validates reliability for automotive body electronics, infotainment power rails, and ADAS sensor interfaces |
| SOD523 package with 0.001 g weight | Enables high-density placement in portable medical devices and wearable sensors |
| Matte tin-plated Alloy 42 leadframe | Ensures robust solderability and long-term intermetallic stability per MIL-STD-202 |
Applications
| Battery Voltage Monitor | Low-Voltage Microcontroller Reset Circuit |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging cycles in portable power tools. IC Role / Device Role / Timing Role: Zener diode acts as precision threshold detector feeding comparator input. Use Value: ±2.0% tolerance ensures accurate 2.7 V undervoltage lockout without calibration overhead. | Use Scenario: Generating clean reset signal when supply drops below 2.7 V in ARM Cortex-M0 microcontrollers. IC Role / Device Role / Timing Role: Provides stable reference for external reset supervisor IC or discrete RC-reset network. Use Value: Low 440 pF capacitance avoids timing skew in reset assertion/deassertion edges. |
| USB Port Overvoltage Clamp | Industrial Sensor Signal Conditioning |
Use Scenario: Protecting 3.3 V USB data lines from ESD-induced voltage spikes up to ±15 kV. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting transient voltage to ≤2.7 V above ground. Use Value: 350 mW rating sustains multiple 100 ns pulses without degradation in field-deployed equipment. | Use Scenario: Stabilizing excitation voltage for 2-wire RTD bridges in process control transmitters. IC Role / Device Role / Timing Role: Supplies low-drift 2.7 V bias to bridge circuit, referenced against system ground. Use Value: −1.4 mV/°C TC allows predictable compensation in ambient temperature ranges from −40 to +85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | Zener voltage 2.7 V (±5%), higher ZZT = 120 Ω @ 20 mA, SOT-323 package (larger footprint) | Higher power handling (300 mW) but looser tolerance reduces accuracy in precision references | Select when cost sensitivity outweighs voltage accuracy requirements |
| BZX84-C2V7 | Zener voltage 2.7 V (±5%), ZZT = 100 Ω @ 5 mA, SOT-23 package (3-pin, anode/cathode/common) | Requires routing to common cathode; not optimized for ultra-compact layouts | Choose if existing SOT-23 footprint reuse is prioritized over size reduction |
Compared with MMBZ5223BS-7-F and BZX84-C2V7, BZT585B2V7T-7 delivers tighter voltage tolerance (±2.0% vs. ±5%), smaller SOD523 footprint, and AEC-Q101 qualification - making it optimal for space-constrained automotive and portable industrial sensors requiring traceable reliability.
Availability
BZT585B2V7T-7 is available at Aetrix Electronics and suitable for battery management systems, microcontroller reset circuits, USB port protection, and industrial sensor signal conditioning requiring stable component supply and automotive-grade qualification.
Supply support for BZT585B2V7T-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for high-reliability voltage reference and clamping in automotive, industrial, and portable electronics where compact size and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum reverse current at 1 V for BZT585B2V7T-7?
The maximum reverse leakage current is 20 µA at VR = 1 V and TA = +25°C, as specified in the Electrical Characteristics table. This low leakage ensures minimal power loss in always-on voltage monitor circuits and supports extended battery life in energy-sensitive applications.
Is BZT585B2V7T-7 suitable for automotive applications?
Yes - it is qualified to AEC-Q101 standards for high reliability, with operating temperature range of −65°C to +150°C and halogen/antimony-free "Green" construction. It is widely used in automotive body control modules, infotainment power supplies, and sensor interface circuits requiring certified components.
How does the −1.4 mV/°C temperature coefficient affect circuit performance?
This negative coefficient means the Zener voltage decreases by 1.4 mV per degree Celsius rise in junction temperature. In practice, it enables predictable drift modeling for compensation algorithms in precision references and allows stable operation across industrial temperature ranges without active thermal management.
What is the recommended PCB pad layout for SOD523 mounting?
Diodes Incorporated specifies a recommended pad layout in document AP02001, featuring 0.6 mm pad width, 0.8 mm pad length, and 0.3 mm solder mask opening. Adhering to this layout ensures optimal thermal dissipation (357 °C/W) and mechanical reliability during reflow soldering and board flexure testing.
BZT585B2V7T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±2%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT585B2V7T-7 FAQ
1.How can I place an order for BZT585B2V7T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B2V7T-7 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 BZT585B2V7T-7 reliable?
The price and inventory of BZT585B2V7T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B2V7T-7 is usually 5 days.
3.What payment methods are accepted for BZT585B2V7T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B2V7T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B2V7T-7?
BZT585B2V7T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B2V7T-7 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 BZT585B2V7T-7?
For technical support, including BZT585B2V7T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B2V7T-7 requirements.
6.How does Aetrix verify that BZT585B2V7T-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B2V7T-7 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 BZT585B2V7T-7 meets industry standards.
7.What is the process for return or replacement of BZT585B2V7T-7?
All BZT585B2V7T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B2V7T-7, 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 BZT585B2V7T-7 part is unused and in its original packaging.
Return procedure for BZT585B2V7T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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