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Diodes Incorporated BZT585B16TQ-7
- Part No.:
- BZT585B16TQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B16TQ-7.pdf
- Description:
- DIODE ZENER 16V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:4,286
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Product details
Overview
BZT585B16TQ from Diodes Incorporated is a precision Zener diode with 16 V nominal breakdown voltage (±2.0% tolerance), 350 mW power dissipation, and SOD523 surface-mount package. It operates across –65 °C to +150 °C, features 40 Ω dynamic impedance at 5 mA test current, and delivers stable voltage reference in automotive-grade power regulation and overvoltage protection circuits.
For engineers reviewing the BZT585B16TQ datasheet, BZT585B16TQ pinout, BZT585B16TQ application, or BZT585B16TQ equivalent, key selection criteria include Zener voltage accuracy, thermal stability (14.4 mV/°C tempco), low leakage (<0.05 µA @ 11.2 V), and AEC-Q101 qualification for automotive electronics design.
Technical Context
This Zener diode uses silicon planar epitaxial construction to achieve tight 2.0% VZ tolerance and low temperature coefficient (14.4 mV/°C) at 5 mA. Its SOD523 package enables high power density (350 mW) with minimal footprint and low thermal resistance (357 °C/W).
The device exhibits 90 pF capacitance at 0 V reverse bias and maintains <0.05 µA reverse leakage up to 11.2 V, supporting stable reference generation in low-noise analog and automotive control subsystems where voltage stability under thermal stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.0 V nominal, 15.68–16.32 V range at 5 mA - ensures precise voltage clamping in feedback loops |
| Power Dissipation (PD) | 350 mW - supports continuous operation in compact PCB layouts without forced cooling |
| Zener Impedance (ZZT) | 40 Ω at 5 mA - minimizes output voltage variation under load transients |
| Temp. Coefficient (TC) | +14.4 mV/°C - enables predictable drift compensation in wide-temperature automotive environments |
| Reverse Leakage (IR) | ≤0.05 µA at 11.2 V - preserves low quiescent current in battery-backed systems |
| Capacitance (CT) | 90 pF at 1 MHz, 0 V - limits high-frequency noise coupling in signal conditioning paths |
| Package | SOD523 - 1.2 mm × 0.8 mm footprint with flat leads for low-profile mounting and thermal reliability |
Pinout & Package
Package: SOD523 - ultra-compact, low-profile surface-mount plastic package with cathode band marking; terminals are matte tin annealed over Alloy 42 leadframe, solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential side during Zener operation; enables bidirectional ESD protection when used in back-to-back configuration |
| Cathode | Zener breakdown terminal | Marked by band; connected to higher potential side to establish regulated reference voltage at cathode node |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Reduces need for post-production trimming in voltage reference designs |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics requiring PPAP and IATF16949 manufacturing |
| Green, halogen-free construction | Meets RoHS 3 (2015/863/EU) and automotive environmental compliance mandates |
| Low thermal resistance (357 °C/W) | Enables reliable 350 mW operation on standard FR-4 without heatsinking |
| Cathode band polarity marking | Ensures unambiguous orientation during automated placement and visual inspection |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring HVAC actuators and door lock status. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end circuitry. Use Value: ±2.0% VZ tolerance and AEC-Q101 qualification ensure consistent measurement accuracy across –40 °C to +125 °C operating range. |
Use Scenario: Providing stable bias voltage for bridge amplifier stages in pressure and temperature transducers. IC Role / Device Role / Timing Role: Low-drift Zener reference source for op-amp feedback networks. Use Value: 14.4 mV/°C tempco and 40 Ω impedance maintain <0.5% reference error over industrial temperature span. |
| USB-C Power Delivery Protection | Medical Infusion Pump Power Monitoring |
Use Scenario: Clamping overvoltage on 15 V auxiliary rails during hot-plug events in USB-C PD adapters. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp protecting downstream DC-DC converters. Use Value: 350 mW rating and 90 pF capacitance allow robust transient suppression without signal integrity degradation. |
Use Scenario: Stabilizing supply rail for microcontroller-based motor control logic in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Low-leakage (≤0.05 µA) voltage reference enabling multi-year battery life. Use Value: Ultra-low reverse current preserves battery charge while maintaining accurate 16 V supervision threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5245B-TP (Micro Commercial) | 16 V nominal, ±5% tolerance, 500 mW, SOD-123 package | Larger footprint, wider VZ tolerance, no AEC-Q101 qualification | Select when cost sensitivity outweighs automotive qualification and precision requirements |
| BZX84-C16 (ON Semiconductor) | 16 V nominal, ±5% tolerance, 350 mW, SOT-23 package | Higher thermal resistance (450 °C/W), larger size, non-automotive grade | Choose only for non-automotive consumer applications where board space is less constrained |
Compared with MMSZ5245B-TP and BZX84-C16, the BZT585B16TQ offers tighter voltage tolerance, lower thermal resistance, and full AEC-Q101 compliance-making it the sole choice for automotive-critical reference and protection functions where reliability and precision are non-negotiable.
Availability
BZT585B16TQ is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power delivery protection, and medical device power monitoring requiring stable component supply and long-term lifecycle support.
Supply support for BZT585B16TQ 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 integrated circuits, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for AEC-Q101-compliant voltage reference and overvoltage protection in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum reverse voltage this Zener diode can withstand before breakdown?
The BZT585B16TQ has a nominal Zener voltage of 16.0 V with a guaranteed range of 15.68 V to 16.32 V at 5 mA test current. Its specified maximum reverse voltage before breakdown is defined by this VZ range; operation above 16.32 V under rated current will exceed specification limits and may cause thermal instability.
Is this part suitable for use in automotive applications?
Yes - the BZT585B16TQ is AEC-Q101 qualified, manufactured in IATF16949:2016 certified facilities, PPAP capable, and explicitly rated for automotive applications requiring controlled change management and high-reliability performance across –65 °C to +150 °C.
How does the SOD523 package affect thermal performance?
The SOD523 package delivers 357 °C/W junction-to-ambient thermal resistance when mounted on FR-4 with minimum recommended pad layout. This allows full 350 mW power dissipation at +25 °C ambient, derating linearly to ~200 mW at +85 °C ambient - critical for dense automotive PCB layouts.
What is the significance of the "TQ" suffix in the part number?
The "TQ" suffix denotes Diodes Incorporated's tape-and-reel packaging standard for SOD523 devices, indicating compliance with EIA-481-D carrier tape specifications and compatibility with high-speed pick-and-place equipment used in automotive electronics manufacturing.
BZT585B16TQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Bulk
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT585B16TQ-7 FAQ
1.How can I place an order for BZT585B16TQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B16TQ-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 BZT585B16TQ-7 reliable?
The price and inventory of BZT585B16TQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B16TQ-7 is usually 5 days.
3.What payment methods are accepted for BZT585B16TQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B16TQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B16TQ-7?
BZT585B16TQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B16TQ-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 BZT585B16TQ-7?
For technical support, including BZT585B16TQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B16TQ-7 requirements.
6.How does Aetrix verify that BZT585B16TQ-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B16TQ-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 BZT585B16TQ-7 meets industry standards.
7.What is the process for return or replacement of BZT585B16TQ-7?
All BZT585B16TQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B16TQ-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 BZT585B16TQ-7 part is unused and in its original packaging.
Return procedure for BZT585B16TQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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