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Taiwan Semiconductor Corporation BZX585B3V0
- Part No.:
- BZX585B3V0
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585B3V0.pdf
- Description:
- DIODE ZENER 3V 200MW SOD523F
- Quantity:
- Payment:
- Shipping:
Inventory:3,657
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Product details
Overview
BZX585B3V0 from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 3.0 V (±2%), 200 mW power dissipation, 9 Ω dynamic impedance at 5 mA test current, and SOD-523F package. It provides precision voltage regulation in low-power signal conditioning and reference circuits for portable electronics and sensor interfaces.
For engineers reviewing the BZX585B3V0 datasheet, BZX585B3V0 pinout, BZX585B3V0 application, or BZX585B3V0 equivalent, key selection criteria include zener tolerance (±2%), low dynamic impedance (9 Ω), guaranteed high-temperature soldering (260°C/10s), RoHS compliance, and MSL 1 handling-critical for automated assembly of space-constrained PCBs.
Technical Context
The BZX585B3V0 operates as a two-terminal voltage reference device, conducting in reverse breakdown to clamp or regulate voltage across its terminals. Its 3.0 V nominal zener voltage is specified at 5 mA test current (IZT), with dynamic impedance measured at 9 Ω under those conditions.
It features a temperature coefficient of −3.5 mV/°C at IZT, indicating predictable negative drift with rising junction temperature, and maximum reverse leakage of 1 μA at VR = 0 V-enabling stable biasing in low-current analog stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V ±2% at IZT = 5 mA - ensures tight voltage reference accuracy for feedback networks and ADC references |
| Power Dissipation (PD) | 200 mW - supports continuous operation in low-power sensor front-ends without forced cooling |
| Dynamic Impedance (ZZT) | 9 Ω at IZT = 5 mA - minimizes output voltage variation under load transients in regulated supplies |
| Reverse Leakage (IR) | ≤1 μA at VR = 0 V - preserves signal integrity in high-impedance biasing and sample-hold circuits |
| Thermal Resistance (RθJA) | 680 °C/W - defines junction-to-ambient thermal rise under full power in still air on standard FR4 |
| Temperature Coefficient (Tc) | −3.5 mV/°C at IZT - enables predictable compensation in temperature-sensitive reference designs |
Pinout & Package
SOD-523F package: ultra-small surface-mount outline (1.6 × 0.8 × 0.6 mm), anode-cathode polarity marked by cathode band, compatible with standard 0201 pick-and-place equipment and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased configuration; required for proper zener orientation |
| Cathode | Zener breakdown terminal | Connected to higher-potential node; carries regulated voltage during reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener Tolerance | Enables single-supply rail sensing and precision threshold detection without post-calibration |
| MSL 1 Rating | Allows unlimited floor life and direct placement without baking-reducing manufacturing overhead |
| Halogen-Free Construction | Meets IEC 61249-2-21 for environmentally compliant end products and recycling streams |
| 260°C/10s Soldering Guarantee | Supports lead-free reflow processes without parametric shift or delamination risk |
Applications
| Portable Sensor Biasing | Low-Voltage Reference Supply |
|---|---|
Use Scenario: Providing stable bias voltage to MEMS accelerometers and analog temperature sensors in battery-powered wearables. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed operating point for sensor excitation and signal conditioning amplifiers. Use Value: ±2% tolerance and low 9 Ω impedance ensure <±10 mV drift over load and temperature-critical for sub-12-bit measurement accuracy. | Use Scenario: Generating clean 3.0 V reference for 10-bit SAR ADCs in IoT edge nodes with 3.3 V supply rails. IC Role / Device Role / Timing Role: Passive shunt regulator supplying low-noise, low-drift reference to ADC voltage reference input pins. Use Value: 1 μA max reverse leakage prevents loading of high-impedance reference inputs, preserving effective resolution. |
| Overvoltage Clamp Protection | Microcontroller Reset Circuit |
Use Scenario: Clamping transient surges on 3.3 V I²C bus lines exposed to ESD events in industrial control panels. IC Role / Device Role / Timing Role: Bidirectional transient suppressor limiting voltage excursion to ≤3.06 V during fast-rising ESD pulses. Use Value: Fast response and low 9 Ω impedance limit clamping overshoot, protecting downstream level translators and GPIOs. | Use Scenario: Generating reliable reset signal for ARM Cortex-M0+ microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering external reset IC when supply drops below 3.0 V threshold. Use Value: −3.5 mV/°C tempco allows predictable reset threshold shift across −40°C to +85°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | 3.0 V ±5%, 350 mW PD, SOD-323 package, 100 Ω ZZT @ 20 mA | Higher power rating but looser tolerance and higher impedance-less suitable for precision references | Preferable where board space allows larger SOD-323 and higher surge energy absorption is needed |
| BZX384-B3V0,115 | 3.0 V ±2%, 250 mW PD, SOD-323 package, 15 Ω ZZT @ 5 mA | Same tolerance and tighter thermal spec (TJ = 150°C), but larger footprint and higher impedance than BZX585B3V0 | Preferred when higher power margin is required and SOD-323 layout is already established |
Compared with MMBZ5223BS-7-F and BZX384-B3V0,115, the BZX585B3V0 delivers superior low-impedance regulation (9 Ω) in the smallest footprint (SOD-523F), making it optimal for miniaturized, high-accuracy voltage reference designs where space and stability are constrained.
Availability
BZX585B3V0 is available at Aetrix Electronics and suitable for portable sensor biasing, low-voltage reference supplies, and overvoltage clamp protection requiring stable component supply, consistent parametric performance, and full MSL 1 handling support.
Supply support for BZX585B3V0 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete devices, analog ICs, and power management solutions for industrial, automotive, and consumer markets.
The BZX585B3V0 belongs to TSC's Small Signal Product line, engineered for high-reliability, low-power voltage regulation in compact, thermally sensitive applications such as wearables, IoT endpoints, and sensor modules.
FAQ
What is the zener voltage tolerance of the BZX585B3V0?
The BZX585B3V0 has a zener voltage tolerance of ±2% at 5 mA test current, meaning its nominal 3.0 V breakdown voltage falls between 2.94 V and 3.06 V under standard conditions. This tight tolerance supports precision applications like ADC references and sensor biasing where absolute voltage accuracy matters. The BZX585B3V0 maintains this specification across its qualified operating temperature range and is verified per Taiwan Semiconductor's C1607 datasheet revision.
What package type does the BZX585B3V0 use?
The BZX585B3V0 uses the SOD-523F surface-mount package-a miniature outline measuring 1.6 × 0.8 × 0.6 mm with standardized anode/cathode polarity marking. Its MSL 1 rating and 260°C/10s soldering guarantee make it compatible with high-volume automated assembly. The BZX585B3V0's compact size supports dense PCB layouts in space-constrained designs such as hearing aids and smart tags.
What is the maximum power dissipation for the BZX585B3V0?
The BZX585B3V0 has a maximum power dissipation of 200 mW at 25°C ambient temperature, derating linearly above that per its thermal resistance (RθJA = 680 °C/W). This rating enables continuous operation in low-power circuits like microcontroller reset monitors and sensor bias networks. The BZX585B3V0's thermal design allows safe operation up to TJ = 150°C, provided board-level copper area and airflow meet minimum requirements.
Does the BZX585B3V0 meet RoHS and halogen-free standards?
Yes, the BZX585B3V0 is fully RoHS compliant per Directive 2011/65/EU and halogen-free per IEC 61249-2-21. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE, and uses green compound encapsulation. These certifications are confirmed in Taiwan Semiconductor's official documentation for the BZX585B3V0 and apply to all units shipped under standard ordering codes including RSG suffix variants.
What is the dynamic impedance of the BZX585B3V0 and why does it matter?
The BZX585B3V0 exhibits a dynamic impedance (ZZT) of 9 Ω at 5 mA test current, reflecting its ability to maintain stable voltage under small-signal AC or transient load variations. Low impedance minimizes output voltage ripple and improves regulation in feedback paths and reference buffers. For the BZX585B3V0, this value directly supports high-accuracy applications such as precision voltage monitoring and low-drift sensor excitation where even millivolt-level shifts degrade system performance.
BZX585B3V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±2%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 9 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523F
BZX585B3V0 FAQ
1.How can I place an order for BZX585B3V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585B3V0 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 BZX585B3V0 reliable?
The price and inventory of BZX585B3V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585B3V0 is usually 5 days.
3.What payment methods are accepted for BZX585B3V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585B3V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585B3V0?
BZX585B3V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585B3V0 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 BZX585B3V0?
For technical support, including BZX585B3V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585B3V0 requirements.
6.How does Aetrix verify that BZX585B3V0 is sourced from the original manufacturer or authorized distributors?
All BZX585B3V0 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 BZX585B3V0 meets industry standards.
7.What is the process for return or replacement of BZX585B3V0?
All BZX585B3V0 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585B3V0, 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 BZX585B3V0 part is unused and in its original packaging.
Return procedure for BZX585B3V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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