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Diodes Incorporated BZT585B16T-7
- Part No.:
- BZT585B16T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B16T-7.pdf
- Description:
- DIODE ZENER 16V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:34,705
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Product details
Overview
BZT585B16T-7 from Diodes Incorporated is a precision 16 V Zener diode in SOD523 package, ±2.0% voltage tolerance at 5 mA test current, 350 mW power dissipation, and 40 Ω dynamic impedance at 1 kHz. It serves as a stable voltage reference or overvoltage clamp in low-power analog sensor signal conditioning circuits.
For engineers reviewing the BZT585B16T-7 datasheet, BZT585B16T-7 pinout, BZT585B16T-7 application, or BZT585B16T-7 equivalent, key selection criteria include Zener voltage accuracy (15.68–16.32 V), thermal coefficient (+14.4 mV/°C), reverse leakage (≤0.05 µA at 11.2 V), and SOD523 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates in reverse breakdown mode with tightly controlled Zener voltage across temperature and current variations. Its ±2.0% tolerance and +14.4 mV/°C temperature coefficient enable predictable regulation in ambient ranges from –65°C to +150°C.
The SOD523 package supports high power density via low thermal resistance (357 °C/W) on FR-4 PCBs using Diodes Inc.'s recommended pad layout. Cathode band marking and matte tin-plated Alloy 42 leads ensure reliable solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.0 V nominal, 15.68–16.32 V range at IZT = 5 mA - ensures tight reference stability for calibration circuits |
| Zener Impedance (ZZT) | 40 Ω at 1 kHz - limits output voltage variation under load transients |
| Power Dissipation (PD) | 350 mW - supports continuous operation in compact consumer and industrial modules without heatsinking |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 11.2 V - minimizes quiescent current in battery-powered voltage monitors |
| Temperature Coefficient (TC) | +14.4 mV/°C - enables predictable drift compensation in temperature-sensitive references |
| Capacitance (CT) | 90 pF at f = 1 MHz, VR = 0 V - suitable for DC and low-frequency (<100 kHz) regulation, not RF bypass |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - allows use as low-drop rectifier in auxiliary bias paths |
Pinout & Package
Package: SOD523 - ultra-small surface-mount plastic case (1.6 × 0.8 × 0.6 mm), cathode band marked on top surface, matte tin-plated terminals on Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in Zener mode | Must be held ≤11.2 V to avoid excessive reverse leakage; ties to ground or signal return in clamp configurations |
| Cathode | Current exit terminal in forward bias; higher-potential node in Zener regulation | Connected to regulated rail or protected input; cathode band identifies this terminal visually and in layout |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Reduces need for post-assembly trimming in production-grade voltage references |
| AEC-Q101 qualified | Validated for automotive under-hood applications including body control modules and sensor interfaces |
| SOD523 footprint | Enables placement in <1.0 mm² board area-critical for wearables and miniaturized IoT nodes |
| Lead-free, halogen-free, RoHS-compliant | Meets IPC-J-STD-020 Level 1 moisture sensitivity and global environmental compliance mandates |
| 357 °C/W thermal resistance | Permits full 350 mW dissipation on standard FR-4 without thermal vias or copper pours |
Applications
| Automotive Cabin Sensors | Industrial Temperature Transmitters |
|---|---|
Use Scenario: Voltage reference for 4–20 mA loop-powered cabin humidity sensors operating at 12 V supply. IC Role / Device Role / Timing Role: Zener diode provides stable 16 V shunt reference for op-amp biasing and ADC reference scaling. Use Value: ±2.0% tolerance and +14.4 mV/°C TC allow full-range accuracy over –40°C to +85°C without software calibration. | Use Scenario: Overvoltage clamp protecting analog front-end inputs of RTD-to-digital converters in factory automation PLCs. IC Role / Device Role / Timing Role: Shunt limiter clamps transient spikes above 16.32 V to prevent op-amp saturation or ESD damage. Use Value: 40 Ω ZZT ensures clamping voltage stays within 0.4 V of nominal during 10 mA surges, preserving signal integrity. |
| Medical Wearable Battery Monitors | Smart Home Smoke Detector MCUs |
Use Scenario: Precision reference for lithium-ion cell voltage measurement in compact fitness trackers. IC Role / Device Role / Timing Role: Supplies stable 16 V reference to SAR ADC for accurate 0–4.2 V cell sensing via resistor divider. Use Value: 0.05 µA reverse leakage at 11.2 V extends shelf life and reduces standby current in coin-cell-powered designs. | Use Scenario: Voltage supervisor for ARM Cortex-M0+ MCU in battery-operated smoke alarms with dual alkaline cells. IC Role / Device Role / Timing Role: Zener sets brown-out threshold at ~16 V to trigger graceful shutdown before battery depletion. Use Value: AEC-Q101 qualification ensures reliability across 10-year field deployment under temperature cycling and humidity stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F | 16 V nominal, ±5% tolerance, 200 mW PD, SOT-323 package (2.2 × 1.35 × 0.95 mm) | Larger footprint, lower power rating, wider voltage spread - less suitable for space-constrained precision references | Select when cost priority outweighs size and tolerance; verify thermal derating on dense boards |
| BZX84-C16 | 16 V nominal, ±5% tolerance, 300 mW PD, SOT-23 package (3.0 × 1.4 × 1.1 mm) | Three times larger area, no AEC-Q101 qualification, higher ZZT (50 Ω) - unsuitable for automotive or miniaturized designs | Acceptable for non-automotive industrial prototypes where board space and long-term stability are secondary |
Compared with MMBZ5245BS-7-F and BZX84-C16, BZT585B16T-7 delivers tighter voltage control, higher power density, and automotive-grade reliability in the smallest available footprint-making it optimal for next-generation compact, mission-critical systems.
Availability
BZT585B16T-7 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial temperature transmitters, medical wearable battery monitors, and smart home smoke detector MCUs requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZT585B16T-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, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for high-reliability voltage reference and protection in automotive, industrial, and portable electronics where size, accuracy, and qualification matter.
FAQ
What is the maximum reverse voltage that can be continuously applied without exceeding leakage specifications?
The datasheet specifies maximum reverse current (IR) ≤ 0.05 µA at VR = 11.2 V. Applying voltages beyond this level increases leakage exponentially; sustained operation above 11.2 V risks violating the 0.05 µA spec and may accelerate long-term parameter drift. For clamping, operate only in controlled breakdown above 15.68 V with current limiting.
Does the +14.4 mV/°C temperature coefficient indicate positive or negative drift relative to nominal voltage?
Yes, the +14.4 mV/°C coefficient means Zener voltage increases by 14.4 mV per degree Celsius rise in junction temperature. At +85°C (60°C above 25°C reference), VZ rises by ~0.86 V - from 16.0 V to ~16.86 V - a predictable, linear shift used in temperature-compensated reference designs.
Can BZT585B16T-7 be used in place of a 15 V Zener like BZT585B15T?
No - BZT585B15T has 15.0 V nominal (14.70–15.30 V range) and +13.2 mV/°C TC, while BZT585B16T-7 is strictly 16.0 V (15.68–16.32 V). Substitution alters reference level by >6%, exceeding typical system tolerance. Use only when circuit design explicitly targets 16 V regulation or clamping.
Is the SOD523 package compatible with standard reflow profiles for lead-free soldering?
Yes - the device is rated for moisture sensitivity Level 1 per J-STD-020 and qualified for peak reflow temperatures up to 260°C. Its matte tin finish and Alloy 42 leadframe meet IPC-A-610 Class 2 requirements. No pre-bake is required; standard Pb-free reflow (e.g., JEDEC J-STD-020 profile) applies directly.
BZT585B16T-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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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
BZT585B16T-7 FAQ
1.How can I place an order for BZT585B16T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B16T-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 BZT585B16T-7 reliable?
The price and inventory of BZT585B16T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B16T-7 is usually 5 days.
3.What payment methods are accepted for BZT585B16T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B16T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B16T-7?
BZT585B16T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B16T-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 BZT585B16T-7?
For technical support, including BZT585B16T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B16T-7 requirements.
6.How does Aetrix verify that BZT585B16T-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B16T-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 BZT585B16T-7 meets industry standards.
7.What is the process for return or replacement of BZT585B16T-7?
All BZT585B16T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B16T-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 BZT585B16T-7 part is unused and in its original packaging.
Return procedure for BZT585B16T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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