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Diodes Incorporated BZT585B5V1T-7
- Part No.:
- BZT585B5V1T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B5V1T-7.pdf
- Description:
- DIODE ZENER 5.1V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,056
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Product details
Overview
BZT585B5V1T-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal 5.1 V breakdown voltage (±2.0% tolerance), 60 Ω maximum Zener impedance at 5 mA test current, and −0.5 mV/°C temperature coefficient. It operates within −65°C to +150°C, dissipates up to 350 mW, and is packaged in SOD523 for space-constrained voltage regulation in automotive power rails and industrial sensor biasing.
For engineers reviewing the BZT585B5V1T-7 datasheet, BZT585B5V1T-7 pinout, BZT585B5V1T-7 application, or BZT585B5V1T-7 equivalent, key selection criteria include Zener voltage accuracy, low thermal drift, compact SOD523 footprint, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device functions as a two-terminal voltage reference where reverse-biased operation maintains stable 5.1 V across its terminals under controlled current. Its −0.5 mV/°C temperature coefficient ensures minimal voltage shift over temperature, and 300 pF typical junction capacitance supports stable performance in low-frequency regulation circuits.
The SOD523 package enables high power density (350 mW) despite its 1.6 mm × 0.8 mm footprint, with matte tin-plated Alloy 42 leads ensuring solderability per MIL-STD-202. Cathode band marking provides unambiguous polarity identification during automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, 5.00–5.20 V range at 5 mA - enables precise 5 V rail clamping or reference generation |
| Zener Impedance (ZZT) | 60 Ω max at IZT = 5 mA - ensures low dynamic resistance for stable regulation under load transients |
| Temperature Coefficient | −0.5 mV/°C typical - minimizes voltage drift across industrial temperature range (−40°C to +125°C) |
| Power Dissipation | 350 mW at TA = 25°C - supports continuous operation on standard FR-4 PCB with recommended pad layout |
| Junction Capacitance | 300 pF max at f = 1 MHz, VR = 0 V - suitable for DC/low-frequency regulation without signal coupling concerns |
| Reverse Leakage Current | 2 µA max at VR = 2 V - guarantees low quiescent power loss in always-on bias networks |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic case (1.6 mm × 0.8 mm × 0.6 mm), cathode-band marked, RoHS-compliant, halogen-free, qualified to AEC-Q101.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias return path | Connected to lower-potential node in Zener regulation; forms current sink when reverse biased |
| Cathode | Forward current exit / Reverse bias voltage reference node | Marked with band; connected to regulated output node; defines 5.1 V reference potential relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Enables tight regulation without post-production trimming in cost-sensitive consumer and automotive modules |
| AEC-Q101 qualification | Validated for automotive power management systems requiring extended temperature operation and long-term reliability |
| SOD523 package with flat lead design | Provides 350 mW power handling in <1.3 mm height - ideal for thin-profile modules and dense PCB layouts |
| Halogen- and antimony-free "Green" construction | Meets IPC-1752A material declaration requirements and EU environmental compliance mandates |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring battery voltage and door lock status. IC Role / Device Role / Timing Role: Precision voltage clamp and reference source for analog front-end circuitry. Use Value: ±2.0% VZ tolerance and −0.5 mV/°C TC ensure consistent ADC accuracy across −40°C to +125°C ambient. | Use Scenario: Biasing bridge sensors in pressure transducers used in HVAC control systems. IC Role / Device Role / Timing Role: Stable excitation voltage source for Wheatstone bridge networks. Use Value: Low 2 µA leakage at 2 V reverse bias prevents loading of high-impedance sensor outputs. |
| USB-C Power Delivery Monitor | Medical Infusion Pump Power Supervision |
Use Scenario: Overvoltage protection and reference generation for PD controller voltage sense circuitry. IC Role / Device Role / Timing Role: Clamping diode and precision reference in feedback loop of buck converter supervisor. Use Value: 60 Ω ZZT ensures fast response to input surges while maintaining regulation stability. | Use Scenario: Monitoring main supply rail integrity in battery-backed medical devices with strict safety margins. IC Role / Device Role / Timing Role: Fail-safe voltage threshold detector for brown-out warning logic. Use Value: AEC-Q101 qualification and 150°C max TJ support reliable operation in sealed, thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5231BT1G | 5.1 V nominal, ±5% tolerance, 17 Ω ZZT, SOD-123 package (2.7 mm × 1.6 mm) | Larger footprint, higher power rating (500 mW), wider VZ tolerance | Select when board space allows larger package and tighter ZZT is prioritized over voltage accuracy |
| BZX84-C5V1 | 5.1 V nominal, ±5% tolerance, 60 Ω ZZT, SOT-23 package (3.0 mm × 1.4 mm) | Three-terminal SOT-23 format (cathode/anode/NC), higher thermal resistance | Choose only if existing SOT-23 footprint reuse is required and AEC-Q101 is not mandatory |
Compared with MMSZ5231BT1G and BZX84-C5V1, BZT585B5V1T-7 delivers superior voltage accuracy (±2.0% vs. ±5%) and automotive qualification in the smallest footprint (SOD523), making it optimal for next-generation compact, high-reliability designs where precision and space are critical.
Availability
BZT585B5V1T-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and USB-C power supervision requiring stable component supply, AEC-Q101 compliance, and high-volume tape-and-reel delivery.
Supply support for BZT585B5V1T-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, serving automotive, industrial, computing, and consumer markets with a focus on reliability and efficiency.
The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for high-accuracy voltage reference and regulation in space-constrained, thermally demanding applications such as automotive ECUs and portable instrumentation.
FAQ
What is the maximum power dissipation of BZT585B5V1T-7 at 85°C ambient?
At 85°C ambient temperature, the maximum power dissipation is approximately 250 mW, derived from the linear derating curve (350 mW at 25°C, 357°C/W thermal resistance). This assumes mounting on FR-4 PCB with Diodes' recommended pad layout per AP02001.
Does BZT585B5V1T-7 have a specified forward voltage?
Yes - forward voltage is 0.9 V minimum and 1.1 V maximum at 10 mA forward current, and 1.1 V maximum at 100 mA. These values are specified in the Maximum Ratings table and support use in dual-role (Zener + rectifier) circuits where forward conduction may occur.
Is the SOD523 package compatible with standard reflow profiles?
Yes - the device is rated for moisture sensitivity level 1 per J-STD-020 and supports standard Pb-free reflow profiles (peak 260°C, 20–40 sec above 217°C). The matte tin finish ensures robust wetting and joint integrity on OSP- or ENIG-finished PCBs.
How does the −0.5 mV/°C temperature coefficient affect regulation at 125°C?
From 25°C to 125°C (ΔT = 100°C), the Zener voltage shifts by −50 mV (−0.5 mV/°C × 100°C), resulting in ~5.05 V output. This 1% deviation remains within most analog sensing and supervisory tolerances, especially when paired with system-level calibration.
BZT585B5V1T-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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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
BZT585B5V1T-7 FAQ
1.How can I place an order for BZT585B5V1T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B5V1T-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 BZT585B5V1T-7 reliable?
The price and inventory of BZT585B5V1T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B5V1T-7 is usually 5 days.
3.What payment methods are accepted for BZT585B5V1T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B5V1T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B5V1T-7?
BZT585B5V1T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B5V1T-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 BZT585B5V1T-7?
For technical support, including BZT585B5V1T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B5V1T-7 requirements.
6.How does Aetrix verify that BZT585B5V1T-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B5V1T-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 BZT585B5V1T-7 meets industry standards.
7.What is the process for return or replacement of BZT585B5V1T-7?
All BZT585B5V1T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B5V1T-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 BZT585B5V1T-7 part is unused and in its original packaging.
Return procedure for BZT585B5V1T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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