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Nexperia USA Inc. BZX585-C3V0,115
- Part No.:
- BZX585-C3V0,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C3V0,115.pdf
- Description:
- DIODE ZENER 3V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
BZX585-C3V0,115 from Nexperia is a 3.0 V ±5 % Zener voltage regulator diode in an SOD523 (SC-79) ultra-small surface-mount package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision low-voltage reference and overvoltage clamping in space-constrained consumer and industrial power rails.
For engineers reviewing the BZX585-C3V0,115 datasheet, BZX585-C3V0,115 pinout, BZX585-C3V0,115 application, or BZX585-C3V0,115 equivalent, this device supports stable 3.0 V regulation at 5 mA test current with 325 Ω typical differential resistance, −1.6 mV/K temperature coefficient, and 10 µA max reverse leakage at 2.28 V, enabling accurate voltage referencing in battery-powered sensor nodes and USB peripheral protection circuits.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 3.0 V reference across its cathode–anode terminals under controlled current conditions. Its SC-79 package enables high-density PCB layouts while maintaining thermal resistance of 65 K/W from junction to solder point.
The device exhibits a nominal Zener voltage of 3.0 V at IZ = 5 mA, with guaranteed limits of 2.85 V (min) and 3.15 V (max), and a temperature coefficient of −1.6 mV/K - indicating predictable, slightly negative drift over temperature for stable low-voltage biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal at IZ = 5 mA; ensures precise 2.85–3.15 V regulation window for low-voltage reference circuits |
| Tolerance | ±5 %; allows predictable voltage margining in cost-sensitive designs without tight binning |
| Differential Resistance (rdiff) | 325 Ω typical at IZ = 5 mA; defines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | −1.6 mV/K; enables predictable voltage drift compensation in ambient-temperature-varying applications |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper; sets maximum continuous DC power handling |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave; supports transient surge suppression in ESD-coupled interfaces |
| Reverse Current (IR) | 10 µA max at VR = 2.28 V; guarantees low standby leakage in always-on voltage monitor paths |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount plastic package: 1.25 mm × 0.85 mm footprint, 0.65 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity marking bar aligns with this terminal for correct PCB orientation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; reverse-biased operation requires anode at lower voltage than cathode |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SMD package | SOD523 footprint (1.25 × 0.85 mm) enables placement in dense portable electronics and wearables |
| Low differential resistance | 325 Ω typical improves regulation accuracy under varying load currents in feedback networks |
| Controlled temperature coefficient | −1.6 mV/K allows predictable voltage shift over −65 °C to +150 °C junction range |
| High surge robustness | 40 W non-repetitive peak power rating supports IEC 61000-4-2 ESD protection circuit integration |
Applications
| USB Peripheral Protection | Low-Power Sensor Biasing |
|---|---|
|
Use Scenario: Clamping 5 V USB VBUS line against transients in microcontroller-based peripherals. IC Role / Device Role / Timing Role: Zener clamp placed between VBUS and ground to limit voltage excursions during hot-plug or ESD events. Use Value: 3.0 V Zener threshold ensures safe clamping below 3.3 V logic rail tolerance while surviving 40 W surges. |
Use Scenario: Providing stable reference voltage for analog front-end of battery-powered environmental sensors. IC Role / Device Role / Timing Role: Precision shunt reference supplying bias current to op-amp input stages and ADC references. Use Value: ±5 % tolerance and −1.6 mV/K TC enable <1 % total error over 0–70 °C operating range with minimal external components. |
| Portable Audio DC-DC Feedback | IoT Node Power Sequencing |
|
Use Scenario: Setting output voltage of compact buck converter in Bluetooth earbud charging case. IC Role / Device Role / Timing Role: Shunt reference in optocoupler feedback loop to regulate isolated secondary-side output. Use Value: 300 mW power rating supports continuous operation at 5 mA bias, matching typical optocoupler LED drive requirements. |
Use Scenario: Enabling power-good detection during startup of multi-rail IoT SoC modules. IC Role / Device Role / Timing Role: Voltage supervisor input reference that triggers reset release when main 3.3 V rail reaches regulation. Use Value: Low 10 µA reverse leakage minimizes quiescent current draw in always-on monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | 3.0 V ±5 %, SOT-323 package (2.1 × 1.25 mm), 225 mW Ptot, 300 Ω rdiff | Larger footprint; higher thermal resistance (400 K/W j-a); less suitable for ultra-dense layouts | Select when board real estate permits larger package and legacy SOT-323 assembly is preferred. |
| BZX384-C3V0 | 3.0 V ±5 %, SOD-323 package (1.7 × 1.25 mm), 300 mW Ptot, 350 Ω rdiff, −1.5 mV/K TC | 1.7 mm length increases PCB area by ~40 % vs SOD523; identical power and tolerance specs | Choose for compatibility with existing SOD-323 footprints where SOD523 rework is not feasible. |
Compared with MMBZ5223BS-7-F and BZX384-C3V0, the BZX585-C3V0,115 delivers identical regulation performance in the industry's smallest standard Zener package, enabling highest PCB density and lowest thermal resistance to solder point - critical for miniaturized battery-powered systems.
Availability
BZX585-C3V0,115 is available at Aetrix Electronics and suitable for USB interface protection, low-power sensor biasing, portable audio DC-DC feedback, and IoT node power sequencing requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX585-C3V0,115 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in consumer, industrial, and automotive applications.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for precision voltage regulation and transient suppression in space-constrained, cost-sensitive electronic systems.
FAQ
What is the maximum continuous forward current for BZX585-C3V0,115?
The absolute maximum forward current is 200 mA per the limiting values table. However, forward conduction is not the intended operating mode; the device is designed for reverse-bias Zener regulation. Forward voltage is specified at 1.1 V max for 100 mA pulse testing, but sustained forward current should be avoided to prevent degradation.
Can BZX585-C3V0,115 be used as a replacement for older BZX55 or BZX79 series Zeners?
No - BZX585-C3V0,115 uses the SOD523 package with different thermal and mechanical characteristics. While electrical parameters overlap, the smaller footprint and lower thermal mass require updated PCB layout and thermal design. Direct substitution without validation may cause overheating or solder joint reliability issues.
What is the meaning of the 'C' in BZX585-C3V0,115?
The 'C' denotes the ±5 % Zener voltage tolerance grade, distinguishing it from 'B' grade parts (±2 %). The full marking code 'F3' corresponds to BZX585-C3V0 per Table 4, and '115' indicates tape-and-reel packaging per Nexperia's ordering convention.
How does the −1.6 mV/K temperature coefficient affect circuit performance?
A −1.6 mV/K coefficient means the Zener voltage decreases by approximately 0.16 V over a 100 °C rise in junction temperature. This predictable drift allows designers to compensate in reference circuits or select operating points where drift remains within system tolerance - e.g., maintaining <0.5 % error from 25 °C to 70 °C.
BZX585-C3V0,115 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):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 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-C3V0,115 FAQ
1.How can I place an order for BZX585-C3V0,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C3V0,115 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-C3V0,115 reliable?
The price and inventory of BZX585-C3V0,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C3V0,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C3V0,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C3V0,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C3V0,115?
BZX585-C3V0,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C3V0,115 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-C3V0,115?
For technical support, including BZX585-C3V0,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C3V0,115 requirements.
6.How does Aetrix verify that BZX585-C3V0,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C3V0,115 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-C3V0,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C3V0,115?
All BZX585-C3V0,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C3V0,115, 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-C3V0,115 part is unused and in its original packaging.
Return procedure for BZX585-C3V0,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C3V0,115 Tags
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