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Diodes Incorporated BZT585B10T-7
- Part No.:
- BZT585B10T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B10T-7.pdf
- Description:
- DIODE ZENER 10V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:33,522
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Product details
Overview
BZT585B10T-7 from Diodes Incorporated is a precision surface-mount Zener diode with nominal 10 V breakdown voltage (9.80–10.20 V at 5 mA), ±2.0% tolerance, 10 Ω dynamic impedance at 5 mA, and 0.2 µA maximum reverse leakage at 7 V. It operates from –65 °C to +150 °C and dissipates up to 350 mW in SOD523 package, used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZT585B10T-7 datasheet, BZT585B10T-7 pinout, BZT585B10T-7 application, or BZT585B10T-7 equivalent, key selection criteria include Zener voltage accuracy, low temperature coefficient (+7.0 mV/°C), low capacitance (110 pF at 1 MHz), stable reverse leakage, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode employs silicon planar epitaxial construction to achieve tight voltage tolerance and predictable temperature coefficient. Its 10 V nominal Zener voltage is stabilized at 5 mA test current, with low dynamic impedance (10 Ω) ensuring minimal regulation error under load variation.
The device features a cathode-band polarity marking and is optimized for low-profile PCB mounting in space-constrained applications. Its thermal resistance (357 °C/W) and power derating curve are defined for FR-4 boards with Diodes Incorporated's recommended pad layout, enabling reliable operation up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.0 V nominal, 9.80–10.20 V range at IZT = 5 mA - ensures precise voltage clamping in reference circuits |
| Zener Impedance (ZZT) | 10 Ω at 5 mA - maintains stable output under small-signal current variations |
| Temperature Coefficient | +7.0 mV/°C at 5 mA - enables predictable drift compensation in temperature-sensitive designs |
| Reverse Leakage (IR) | 0.2 µA max at VR = 7 V - minimizes standby power loss in battery-powered systems |
| Power Dissipation (PD) | 350 mW at TA = 25 °C - supports continuous regulation in compact SOD523 footprint |
| Capacitance (CT) | 110 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal-path references |
| Operating Temperature | –65 °C to +150 °C - qualified for under-hood automotive and industrial environments |
Pinout & Package
Package: SOD523 - ultra-small, flat-lead surface-mount plastic case (1.6 × 0.8 × 0.6 mm), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential side during forward bias; forms cathode-referenced Zener path when reverse biased |
| Cathode (marked with band) | Zener breakdown terminal | Reference node for regulated voltage output; must be held at higher potential than anode to activate Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Enables direct replacement in precision 10 V reference designs without calibration adjustment |
| AEC-Q101 qualification | Validated for automotive electronics including body control modules and sensor interfaces |
| Green, halogen- and antimony-free construction | Meets strict environmental compliance (Br+Cl < 1500 ppm, Sb < 1000 ppm) for global RoHS markets |
| Low-profile SOD523 package | Reduces board area by >50% vs. SOD-123 while maintaining 350 mW power handling |
Applications
| Automotive Sensor Reference | Portable Instrumentation Supply |
|---|---|
Use Scenario: Providing stable 10 V reference for analog-to-digital converters in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Precision voltage reference for ADC biasing and ratiometric scaling. Use Value: ±2.0% initial tolerance and +7.0 mV/°C TC ensure <±1.5% total error over –40 °C to +125 °C operating range. |
Use Scenario: Regulating supply rail for low-power microcontroller-based multimeters. IC Role / Device Role / Timing Role: Shunt regulator establishing clean 10 V rail from variable battery input. Use Value: 0.2 µA reverse leakage at 7 V extends battery life; 110 pF capacitance avoids signal integrity issues in measurement front-end. |
| Industrial PLC Input Protection | Medical Diagnostic Signal Conditioning |
Use Scenario: Clamping transient overvoltage on 10 V analog input channels of programmable logic controllers. IC Role / Device Role / Timing Role: Overvoltage protection element limiting input to safe Zener voltage threshold. Use Value: 10 Ω Zener impedance ensures fast response to ESD events; AEC-Q101 reliability supports long-term field deployment. |
Use Scenario: Stabilizing excitation voltage for strain-gauge bridges in handheld ultrasound transducers. IC Role / Device Role / Timing Role: Low-noise voltage reference source for bridge biasing and signal amplification. Use Value: 110 pF capacitance prevents RF interference coupling into sensitive analog paths; 350 mW rating accommodates brief surge conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F (Diodes Inc.) | 10 V nominal, ±5% tolerance, 17 Ω ZZT, SOD-323 package, 200 mW PD | Lower accuracy and power rating; suitable only for non-critical biasing | Select when cost is prioritized over regulation stability and automotive qualification is not required |
| BZX84-C10 (ON Semiconductor) | 10 V nominal, ±5% tolerance, 20 Ω ZZT, SOT-23 package, 350 mW PD, no AEC-Q101 | Larger footprint, wider voltage spread, unqualified for automotive use | Choose for legacy SOT-23 board compatibility where ±5% tolerance is acceptable |
Compared with MMBZ5240BS-7-F and BZX84-C10, BZT585B10T-7 delivers tighter voltage control, lower impedance, and automotive-grade reliability in a smaller SOD523 form factor-making it optimal for next-generation space- and performance-constrained reference designs.
Availability
BZT585B10T-7 is available at Aetrix Electronics and suitable for automotive sensor modules, portable instrumentation, industrial PLC inputs, and medical diagnostic signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT585B10T-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, specializing in high-reliability, energy-efficient components for automotive, industrial, and consumer markets.
BZT585B10T-7 belongs to the BZT585B series of precision Zener diodes engineered for voltage reference and regulation in space-constrained, thermally demanding applications-particularly where AEC-Q101 qualification and tight tolerance are mandatory.
FAQ
What is the maximum reverse voltage before breakdown for BZT585B10T-7?
The BZT585B10T-7 exhibits sharp Zener breakdown at 10.0 V nominal, with guaranteed range of 9.80–10.20 V at 5 mA test current. Below 7 V, reverse leakage remains ≤0.2 µA; sustained operation above 10.20 V risks thermal runaway unless current is strictly limited by external series resistance.
Can BZT585B10T-7 be used in place of a 1N4740A?
No-BZT585B10T-7 is not a drop-in replacement for 1N4740A. The 1N4740A is a 1 W through-hole Zener in DO-41 package with ±5% tolerance and ~17 Ω impedance. BZT585B10T-7 is a 350 mW SOD523 device with ±2.0% tolerance and 10 Ω impedance, requiring different PCB layout, thermal design, and current-limiting calculations.
Does BZT585B10T-7 require derating above 25°C ambient?
Yes-power dissipation must be linearly derated above 25°C ambient per the published derating curve. At 70°C ambient, maximum allowable power drops to approximately 220 mW (350 mW × [1 − (70−25)/357]), based on RθJA = 357 °C/W and FR-4 board with recommended pad layout.
Is the SOD523 package compatible with standard reflow profiles?
Yes-the SOD523 package is qualified for lead-free reflow per J-STD-020. Its matte tin finish and alloy 42 leadframe support peak temperatures up to 260°C for ≤60 seconds. Moisture sensitivity level 1 means floor life is unlimited under dry storage conditions, eliminating bake requirements prior to assembly.
BZT585B10T-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):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
BZT585B10T-7 FAQ
1.How can I place an order for BZT585B10T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B10T-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 BZT585B10T-7 reliable?
The price and inventory of BZT585B10T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B10T-7 is usually 5 days.
3.What payment methods are accepted for BZT585B10T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B10T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B10T-7?
BZT585B10T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B10T-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 BZT585B10T-7?
For technical support, including BZT585B10T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B10T-7 requirements.
6.How does Aetrix verify that BZT585B10T-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B10T-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 BZT585B10T-7 meets industry standards.
7.What is the process for return or replacement of BZT585B10T-7?
All BZT585B10T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B10T-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 BZT585B10T-7 part is unused and in its original packaging.
Return procedure for BZT585B10T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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