My Inquiry
My Account
Taiwan Semiconductor Corporation BZX585B10 RSG
- Part No.:
- BZX585B10 RSG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585B10 RSG.pdf
- Description:
- DIODE ZENER 10V 200MW SOD523F
- Quantity:
- Payment:
- Shipping:
Inventory:3,483
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX585B10 RSG from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 10 V (9.80–10.20 V at 5 mA), 2% tolerance, 200 mW power dissipation, and SOD-523F package. It provides precise voltage regulation in low-power signal conditioning, reference, and protection circuits across consumer, industrial, and automotive electronics.
For engineers reviewing the BZX585B10 RSG datasheet, BZX585B10 RSG pinout, BZX585B10 RSG application, or BZX585B10 RSG equivalent, key selection criteria include zener voltage accuracy at 5 mA test current, dynamic impedance of 141 Ω, temperature coefficient of +4.5 mV/°C, and MSL 1 handling capability for reflow compatibility.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage under varying load or supply conditions. Its 2% tolerance and tight ±0.2 V zener voltage window at IZT = 5 mA support precision biasing and clamping in analog front-ends and sensor interfaces.
The SOD-523F package enables high-density PCB layouts while maintaining thermal resistance (RθJA) of 680 °C/W and junction temperature rating up to +150 °C. Reverse leakage remains ≤0.18 μA at 7.5 V, ensuring low standby power loss in battery-sensitive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.0 V nominal, 9.80–10.20 V at 5 mA - ensures ±2% regulation accuracy for reference and clamp functions |
| Power Dissipation | 200 mW - supports continuous operation in low-power signal paths without heatsinking |
| Zener Impedance (ZZT) | 141 Ω at 5 mA - defines voltage stability under small-signal AC variations |
| Temperature Coefficient | +4.5 mV/°C - enables predictable drift compensation in temperature-stable references |
| Reverse Leakage (IR) | ≤0.18 μA at 7.5 V - minimizes quiescent current in always-on monitoring circuits |
| Package | SOD-523F - 0.70–0.90 mm length, 1.50–1.70 mm width, MSL 1 - compatible with standard high-speed pick-and-place and 260°C/10s soldering |
| RoHS & Halogen-Free | Compliant per IEC 61249-2-21 and Directive 2011/65/EU - meets global environmental compliance requirements |
Pinout & Package
SOD-523F is a two-terminal surface-mount package with anode and cathode marked by polarity band on the cathode end. Dimensions: 0.70–0.90 mm (L) × 1.50–1.70 mm (W) × 0.25–0.40 mm (H). Weight ≈1.36 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal | Connected to lower-potential node during forward bias; forms cathode-referenced zener path in reverse bias |
| Cathode (K) | Zener breakdown terminal | Marked with band; connected to higher-potential node to enable controlled reverse breakdown at 10 V |
Key Features
| Feature | Design Value |
|---|---|
| 2% Zener Voltage Tolerance | Enables direct use in ±1% system-level voltage references without trimming |
| MSL 1 Rating | Eliminates bake-out requirement before reflow assembly, reducing manufacturing cost and cycle time |
| Halogen-Free Construction | Meets IPC-4101D/126 and automotive OEM material declarations for flame-retardant PCB integration |
| High-Temperature Soldering Guarantee | Rated for 260°C/10s peak reflow profile - compatible with lead-free SAC305 and SnPb processes |
| Green Compound Encapsulation | Reduces UV-induced degradation and improves long-term reliability in exposed outdoor applications |
Applications
| USB Port ESD Clamp | ADC Reference Divider |
|---|---|
Use Scenario: Protects USB 2.0 data lines from ±8 kV contact ESD per IEC 61000-4-2 using low-capacitance zener clamping. IC Role / Device Role / Timing Role: Zener diode acting as bidirectional transient voltage suppressor between D+ and D− lines and ground. Use Value: 0.18 μA leakage at 7.5 V prevents signal integrity degradation; 141 Ω dynamic impedance ensures fast clamping response below 1 ns. | Use Scenario: Generates stable 2.5 V reference from 5 V rail for 12-bit SAR ADC input scaling. IC Role / Device Role / Timing Role: Precision shunt reference providing regulated bias point for resistor divider network. Use Value: ±2% VZ tolerance and +4.5 mV/°C TC allow <±0.5% total error over 0–70°C without calibration. |
| Automotive Cabin Sensor Bias | IoT Node Battery Monitor |
Use Scenario: Supplies regulated 10 V bias to MEMS pressure sensor in HVAC control module operating at −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Zener-based voltage reference stabilizing sensor excitation voltage against battery droop and ripple. Use Value: +150°C max junction temperature and MSL 1 rating ensure robustness in under-hood thermal cycling and automated assembly. | Use Scenario: Monitors Li-ion cell voltage via resistive divider with zener-clamped input to MCU ADC. IC Role / Device Role / Timing Role: Low-leakage clamp protecting ADC input from overvoltage during battery insertion or surge events. Use Value: 0.18 μA IR at 7.5 V extends shelf life >10 years in coin-cell-powered devices; SOD-523F footprint saves >0.5 mm² PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585C10 RSG | 5% tolerance (9.5–10.5 V), same SOD-523F package and 200 mW rating | Lower accuracy suitable for non-critical biasing; higher production yield and lower cost | Select when ±5% regulation suffices and cost sensitivity outweighs precision needs |
| MMSZ5240B-TP | 5% tolerance, SOD-123 package (larger footprint), 500 mW rating, RθJA = 350 °C/W | Higher power handling but requires more board space; less suitable for ultra-dense layouts | Choose when thermal margin >300 mW is required and PCB area permits larger package |
Compared with BZX585B10 RSG, BZX585C10 RSG trades voltage accuracy for cost and availability, while MMSZ5240B-TP offers higher power but sacrifices miniaturization - making BZX585B10 RSG optimal for space-constrained, precision-biased applications requiring 2% tolerance and MSL 1 assembly.
Availability
BZX585B10 RSG is available at Aetrix Electronics and suitable for USB interface protection, ADC reference generation, automotive sensor biasing, and IoT battery monitoring requiring stable component supply and full RoHS/halogen-free compliance.
Supply support for BZX585B10 RSG 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, automotive, and consumer markets since 1979.
The BZX585B series belongs to TSC's Small Signal Product line, engineered specifically for high-accuracy, low-power voltage regulation and transient suppression in compact, thermally constrained PCB environments.
FAQ
What is the zener voltage tolerance of BZX585B10 RSG?
The BZX585B10 RSG has a 2% zener voltage tolerance, specified as 9.80 V to 10.20 V at test current IZT = 5 mA. This tight tolerance enables direct use in precision reference and clamping applications without external trimming or calibration, distinguishing it from the 5% tolerance BZX585C10 RSG variant.
Is BZX585B10 RSG compatible with lead-free reflow soldering?
Yes, BZX585B10 RSG is qualified for high-temperature soldering at 260°C for 10 seconds, fully compliant with lead-free SAC305 reflow profiles. Its SOD-523F package and halogen-free epoxy meet JEDEC J-STD-020D moisture sensitivity level (MSL) 1, eliminating pre-bake requirements prior to assembly.
What is the maximum reverse leakage current for BZX585B10 RSG?
The maximum reverse leakage current (IR) for BZX585B10 RSG is 0.18 μA at VR = 7.5 V and TA = 25°C. This ultra-low leakage supports energy-efficient operation in always-on monitoring circuits and extends battery life in portable and IoT edge devices where standby current must remain below 1 μA.
Does BZX585B10 RSG have a specified junction-to-ambient thermal resistance?
Yes, BZX585B10 RSG has a typical junction-to-ambient thermal resistance (RθJA) of 680 °C/W under standard JEDEC test conditions. This value reflects its SOD-523F package limitations and confirms suitability only for low-power applications up to 200 mW - higher dissipation requires derating above 25°C ambient per the published power vs. temperature curve.
How does the temperature coefficient affect BZX585B10 RSG performance?
The BZX585B10 RSG exhibits a positive temperature coefficient of +4.5 mV/°C at IZT = 5 mA, meaning its zener voltage increases linearly with junction temperature. This behavior allows predictable drift compensation in temperature-stable references and must be factored into system-level error budgets for applications operating beyond 25°C ambient.
BZX585B10 RSG 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):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 180 nA @ 7 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523F
BZX585B10 RSG FAQ
1.How can I place an order for BZX585B10 RSG through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585B10 RSG 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 BZX585B10 RSG reliable?
The price and inventory of BZX585B10 RSG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585B10 RSG is usually 5 days.
3.What payment methods are accepted for BZX585B10 RSG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585B10 RSG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585B10 RSG?
BZX585B10 RSG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585B10 RSG 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 BZX585B10 RSG?
For technical support, including BZX585B10 RSG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585B10 RSG requirements.
6.How does Aetrix verify that BZX585B10 RSG is sourced from the original manufacturer or authorized distributors?
All BZX585B10 RSG 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 BZX585B10 RSG meets industry standards.
7.What is the process for return or replacement of BZX585B10 RSG?
All BZX585B10 RSG units undergo pre-shipment inspection (PSI). If there is an issue with BZX585B10 RSG, 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 BZX585B10 RSG part is unused and in its original packaging.
Return procedure for BZX585B10 RSG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585B10 RSG Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
