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Diodes Incorporated BZT585B11T-7
- Part No.:
- BZT585B11T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B11T-7.pdf
- Description:
- DIODE ZENER 11V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,613
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Product details
Overview
BZT585B11T-7 from Diodes Incorporated is a precision 11 V Zener diode in SOD523 package, ±2.0% voltage tolerance, 10 Ω dynamic impedance at 5 mA, 350 mW power dissipation, and 0.1 µA maximum reverse leakage at 8.8 V, used for voltage regulation and reference in space-constrained power management circuits.
For engineers reviewing the BZT585B11T-7 datasheet, BZT585B11T-7 pinout, BZT585B11T-7 application, or BZT585B11T-7 equivalent, key selection criteria include Zener voltage accuracy, low-profile SOD523 thermal performance, cathode-band polarity marking, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference with sharp reverse breakdown at nominal 11 V, specified at 5 mA test current (IZT), with temperature coefficient of +8.2 mV/°C ensuring predictable drift over -65°C to +150°C operating range.
Its flat-lead SOD523 package enables high power density (350 mW) on FR-4 PCBs with RθJA = 357°C/W, while matte tin-plated Alloy 42 leads ensure solderability per MIL-STD-202 and compliance with AEC-Q101 stress tests.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V nominal, 10.78–11.22 V range at IZT = 5 mA - ensures tight regulation in feedback loops |
| Zener Impedance (ZZT) | 10 Ω max at IZT = 5 mA - minimizes output voltage variation under load transients |
| Power Dissipation (PD) | 350 mW at TA = 25°C - supports stable operation without heatsinking in compact layouts |
| Reverse Leakage (IR) | 0.1 µA max at VR = 8.8 V - preserves low quiescent current in battery-powered references |
| Temperature Coefficient (TC) | +8.2 mV/°C at IZT = 5 mA - enables predictable compensation in temperature-sensitive analog circuits |
| Capacitance (CT) | 110 pF max at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal conditioning paths |
| Forward Voltage (VF) | 0.9 V min / 1.1 V max at IF = 10 mA - defines conduction threshold when used bidirectionally or in clamp configurations |
Pinout & Package
Package: SOD523 - ultra-small surface-mount plastic case (1.6 × 0.8 × 0.6 mm), molded with UL 94V-0 green compound, cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential node in reverse-biased Zener configuration; enables forward protection clamping |
| Cathode | Breakdown terminal | Marked with band; connects to higher-potential node to establish regulated reference voltage |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Reduces need for post-production trimming in precision reference designs |
| AEC-Q101 qualified | Validated for automotive applications including engine control and body electronics |
| SOD523 low-profile package | Enables placement in dense PCB areas where height clearance < 0.6 mm is required |
| Halogen- and antimony-free "Green" construction | Meets IEC 61249-2-21 and JEDEC JS709C environmental compliance requirements |
| Matte tin annealed terminals | Ensures reliable solder joint formation without lead-free reflow defects |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stable 11 V reference for microcontroller ADC biasing and CAN transceiver VIO supply in BCM subassemblies. IC Role / Device Role / Timing Role: Precision shunt voltage reference providing stable excitation for analog front-end circuitry. Use Value: Maintains ±0.22 V regulation window across temperature, reducing sensor offset drift by >40% vs. standard Zeners. | Use Scenario: Reference voltage source for 4–20 mA loop transmitter ICs in factory automation pressure sensors. IC Role / Device Role / Timing Role: Two-terminal shunt regulator establishing accurate current-loop compliance voltage. Use Value: Low 0.1 µA IR at 80% VR ensures minimal error contribution (<0.02%) to loop calibration. |
| Portable Medical Diagnostic Device | Consumer IoT Power Management |
Use Scenario: Low-power voltage reference for battery-operated ECG front-end amplifiers requiring long-term stability. IC Role / Device Role / Timing Role: Zener-based reference generator for instrumentation amplifier gain-setting resistors. Use Value: +8.2 mV/°C TC allows predictable compensation using simple resistor networks, eliminating need for TCXO-level components. | Use Scenario: Overvoltage clamp and rail stabilization in Bluetooth LE SoC power domains with 3.3 V LDO outputs. IC Role / Device Role / Timing Role: Reverse-biased Zener protecting internal regulators from transient surges on VDD lines. Use Value: 10 Ω ZZT ensures clamping voltage stays within 0.05 V of nominal during 100 ns transients, preventing brownout resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5242BT1G | 12 V nominal, ±5% tolerance, SOD-123 package, 500 mW PD | Higher power, looser tolerance, larger footprint | Select when board space permits larger package and tighter voltage accuracy is not required |
| BZX84-C11 | 11 V nominal, ±5% tolerance, SOT-23 package, 300 mW PD | Same voltage grade but wider tolerance and higher thermal resistance (RθJA = 450°C/W) | Choose only if legacy SOT-23 layout exists and AEC-Q101 qualification is not mandatory |
Compared with MMSZ5242BT1G and BZX84-C11, BZT585B11T-7 delivers superior voltage accuracy (±2.0% vs. ±5%), smaller footprint (SOD523 vs. SOD-123/SOT-23), and automotive-grade reliability-making it optimal for next-gen compact, high-reliability designs where regulation stability and board area are critical.
Availability
BZT585B11T-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor modules, portable medical diagnostics, and consumer IoT power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT585B11T-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.
The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for space-constrained, thermally demanding applications requiring AEC-Q101 qualification and tight voltage tolerances.
FAQ
What is the maximum reverse voltage before breakdown for BZT585B11T-7?
The nominal Zener voltage is 11.0 V with a guaranteed range of 10.78 V to 11.22 V at 5 mA test current. Breakdown occurs sharply within this band; operation below 10.78 V maintains <0.1 µA leakage, while exceeding 11.22 V at rated current confirms full regulation onset.
Can BZT585B11T-7 be used in place of a 12 V Zener diode?
No-it is not a drop-in replacement for 12 V Zeners. Its 11 V nominal rating and ±2.0% tolerance yield a maximum of 11.22 V, which falls outside the typical 12 V Zener's 11.4–12.6 V range. Substituting would cause under-regulation in circuits designed for 12 V reference or clamp thresholds.
Is the SOD523 package compatible with standard reflow profiles for lead-free soldering?
Yes-the matte tin annealed terminals meet MIL-STD-202 Method 208 requirements and are qualified for standard Pb-free reflow profiles (peak 260°C, 60-second duration). The SOD523's low thermal mass enables uniform heating without delamination risk on FR-4 boards.
Does BZT585B11T-7 support bidirectional ESD protection?
No-it is a unidirectional Zener diode optimized for reverse-bias regulation. While forward conduction occurs at ~0.9 V, its structure lacks symmetric breakdown characteristics needed for IEC 61000-4-2 compliant ESD clamping; dedicated TVS diodes like DZ23C11 should be used for bidirectional surge suppression.
BZT585B11T-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):
- 11 V
- Tolerance:
- ±2%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
BZT585B11T-7 FAQ
1.How can I place an order for BZT585B11T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B11T-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 BZT585B11T-7 reliable?
The price and inventory of BZT585B11T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B11T-7 is usually 5 days.
3.What payment methods are accepted for BZT585B11T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B11T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B11T-7?
BZT585B11T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B11T-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 BZT585B11T-7?
For technical support, including BZT585B11T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B11T-7 requirements.
6.How does Aetrix verify that BZT585B11T-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B11T-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 BZT585B11T-7 meets industry standards.
7.What is the process for return or replacement of BZT585B11T-7?
All BZT585B11T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B11T-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 BZT585B11T-7 part is unused and in its original packaging.
Return procedure for BZT585B11T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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