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Nexperia USA Inc. BZX585-C11,115
- Part No.:
- BZX585-C11,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C11,115.pdf
- Description:
- DIODE ZENER 11V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:952
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Product details
Overview
BZX585-C11,115 from Nexperia is a ±5 % tolerance Zener diode in SOD523 (SC-79) package, rated for 11 V nominal regulation voltage at 5 mA, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power handling - used for precision voltage reference and overvoltage clamping in low-power sensor interfaces and microcontroller I/O protection circuits.
For engineers reviewing the BZX585-C11,115 datasheet, BZX585-C11,115 pinout, BZX585-C11,115 application, or BZX585-C11,115 equivalent, key selection criteria include Zener voltage tolerance, differential resistance at 5 mA, thermal resistance to solder point, cathode-marked SOD523 footprint compatibility, and transient surge capability under 100 µs square-wave conditions.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a specified nominal Zener voltage of 11 V at test current IZ = 5 mA, exhibiting a typical differential resistance of 25 Ω and temperature coefficient of +5.4 mV/K across its operating range. Its low 65 K/W junction-to-solder-point thermal resistance enables stable regulation in thermally constrained PCB layouts.
The device supports fast transient suppression via 40 W non-repetitive peak reverse power dissipation (tp = 100 µs, square wave), while maintaining ≤ 0.1 µA reverse leakage at 8.8 V and forward voltage ≤ 1.1 V at 100 mA - enabling dual-role use as both regulator and ESD clamp in space-limited analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45 V to 11.55 V at IZ = 5 mA - defines tight regulation window for 3.3 V/5 V rail monitoring and reference buffering |
| Differential Resistance (rdiff) | 25 Ω (typ) at IZ = 5 mA - ensures minimal output voltage shift under load variation in feedback networks |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² copper - sets continuous DC bias limit for passive regulation stages |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - enables single-event surge clamping without thermal runaway |
| Junction-to-Solder-Point Rth | 65 K/W - allows direct thermal coupling to PCB copper for reliable power cycling in industrial sensors |
| Reverse Leakage (IR) | ≤ 0.1 µA at VR = 8.8 V - guarantees negligible quiescent current draw in battery-powered voltage monitors |
| Forward Voltage (VF) | ≤ 1.1 V at IF = 100 mA - supports bidirectional clamping function when forward-biased during transients |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount package: 1.25 mm × 0.85 mm body, 0.65 mm height, cathode marked by bar on top surface; optimized for high-density routing and reflow-compatible land pattern per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - must be routed to higher-potential side in shunt regulation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; forms current path during Zener conduction and forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage referencing where tighter tolerance is unnecessary - e.g., non-critical supply supervision |
| Low 25 Ω differential resistance | Maintains regulation accuracy within ±0.125 V under ±5 mA load change - suitable for ADC reference buffers |
| 40 W non-repetitive surge rating | Clamps ESD events (IEC 61000-4-2 Level 4) without degradation when used with series current-limiting resistor |
| 65 K/W junction-to-solder-point Rth | Permits sustained 200 mA forward current or 30 mA Zener current without exceeding 150 °C junction temperature on standard PCB |
| SOD523 footprint compatibility | Matches industry-standard SC-79 land pattern - eliminates need for custom stencil or placement adjustments in high-volume assembly |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt Zener regulator providing 11 V reference to op-amp excitation stage. Use Value: 25 Ω rdiff limits output drift to <±0.5 mV per 20 µA load variation, ensuring <0.01 % gain error in 24-bit sigma-delta measurements. |
Use Scenario: Protecting GPIO pins of ARM Cortex-M0+ MCUs against induced transients in factory automation HMI panels. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor clamping both positive surges (cathode-to-ground) and negative spikes (anode-to-ground). Use Value: 40 W PZSM handles 1 kV ESD pulses with <10 ns response, while 0.1 µA IR avoids signal leakage in high-impedance input circuits. |
| Low-Power Battery Monitor Reference | USB-C Port VBUS Regulation Feedback |
Use Scenario: Generating stable threshold for lithium-ion cell voltage detection in wearable medical devices. IC Role / Device Role / Timing Role: Precision Zener reference feeding comparator input in ultra-low-quiescent-current monitor IC. Use Value: ±5 % VZ tolerance aligns with ±30 mV detection window for 3.6 V nominal cells; 300 mW Ptot allows operation up to 27 mA without derating. |
Use Scenario: Providing feedback voltage to USB PD controller for 9 V/15 V VBUS negotiation in portable chargers. IC Role / Device Role / Timing Role: Secondary shunt reference trimming primary feedback divider to meet ±1 % VBUS accuracy requirement. Use Value: 10.45–11.55 V VZ range enables precise 9 V regulation via resistor ratio tuning; SOD523 size fits tight layout near CC logic pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B11,115 | ±2 % VZ tolerance (vs. ±5 %); otherwise identical package, power ratings, and thermal specs | Required where tighter regulation stability needed - e.g., precision ADC references or calibration circuits | Select when VZ accuracy > 2 % is mandatory; pay premium for tighter tolerance without changing layout or thermal design |
| MMSZ5240B-7-F | Same 11 V nominal, but SOD-123 package (2.7 × 1.4 mm), 500 mW Ptot, 30 Ω rdiff, ±5 % tolerance | Used where higher continuous power or legacy footprint compatibility is prioritized over board space | Choose when thermal margin > 300 mW is required or existing SOD-123 land patterns exist - adds 2.5× board area vs. SOD523 |
Compared with BZX585-C11,115, the BZX585-B11,115 improves voltage accuracy at no thermal or layout cost, while MMSZ5240B-7-F trades miniaturization for higher power headroom and larger footprint - making each optimal for distinct trade-offs between precision, size, and thermal capacity.
Availability
BZX585-C11,115 is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller I/O protection, low-power battery monitoring, and USB-C VBUS feedback requiring stable component supply across high-mix production runs.
Supply support for BZX585-C11,115 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained voltage regulation and transient suppression in portable and IoT edge devices where SOD523 footprint and low leakage are critical.
FAQ
What is the maximum continuous Zener current for BZX585-C11,115 at 70 °C ambient?
At Tamb = 70 °C, derating applies: Ptot = 300 mW − (70 − 25) °C × (300 mW / (150 − 25) °C) = 192 mW. With VZ ≈ 11 V, max continuous IZ = 192 mW / 11 V ≈ 17.5 mA - verified from thermal resistance data and absolute maximum ratings table.
Can BZX585-C11,115 be used in series for higher voltage regulation?
No - Zener diodes in series exhibit mismatched temperature coefficients and dynamic impedance, causing unstable combined regulation. The BZX585-C11,115 is designed for single-device shunt operation; higher voltages require dedicated multi-Zener arrays or active regulators.
Is the cathode marking bar visible under standard optical inspection?
Yes - the cathode bar is laser-marked on the top surface of the SOD523 package and is clearly identifiable using 10× magnification or automated AOI systems, matching JEDEC SC-79 orientation standards for automated placement verification.
Does BZX585-C11,115 meet RoHS and REACH compliance?
Yes - per Nexperia's official product declaration, BZX585-C11,115 is RoHS-compliant (2011/65/EU) and REACH-conformant (EC 1907/2006), with lead-free matte tin termination and halogen-free molding compound, documented in the manufacturer's compliance portal.
BZX585-C11,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 µA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX585-C11,115 FAQ
1.How can I place an order for BZX585-C11,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C11,115 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 BZX585-C11,115 reliable?
The price and inventory of BZX585-C11,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C11,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C11,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C11,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C11,115?
BZX585-C11,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C11,115 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 BZX585-C11,115?
For technical support, including BZX585-C11,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C11,115 requirements.
6.How does Aetrix verify that BZX585-C11,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C11,115 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 BZX585-C11,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C11,115?
All BZX585-C11,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C11,115, 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 BZX585-C11,115 part is unused and in its original packaging.
Return procedure for BZX585-C11,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C11,115 Tags
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MM5Z5V1ST1G
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