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Nexperia USA Inc. BZX585-B2V4,115
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- Part No.:
- BZX585-B2V4,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B2V4,115.pdf
- Description:
- DIODE ZENER 2.4V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:565
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Product details
Overview
BZX585-B2V4,115 from Nexperia is a 2.4 V ±2 % tolerance Zener diode in SOD523 (SC-79) package, designed for precision voltage regulation and reference functions in space-constrained low-power circuits. It delivers 300 mW total power dissipation, 40 W non-repetitive peak reverse power capability, and exhibits 275 Ω typical differential resistance at 5 mA Zener current - enabling stable clamping in power supply feedback paths, overvoltage protection, and analog reference circuits.
For engineers reviewing the BZX585-B2V4,115 datasheet, BZX585-B2V4,115 pinout, BZX585-B2V4,115 application, or BZX585-B2V4,115 equivalent, key selection criteria include its 2.4 V nominal Zener voltage with tight ±2 % tolerance, ultra-small SOD523 footprint, low thermal resistance (65 K/W junction-to-solder point), and verified performance under transient surge conditions (tp = 100 µs, square wave).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 2.4 V reference across a 1–5 mA working current range, with temperature coefficient of −3.5 to −1.3 mV/K ensuring predictable drift in ambient-temperature-sensitive designs. Its low 275 Ω differential resistance at IZ = 5 mA minimizes output impedance variation under load changes.
The device uses planar epitaxial construction for consistent Zener characteristics and low leakage, with cathode identification via a visible marking bar on the SOD523 body. Thermal design relies on direct heat conduction through the cathode tab to PCB copper (Rth(j-sp) = 65 K/W), not ambient convection (Rth(j-a) = 350 K/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V nominal, ±2 % tolerance (2.35–2.45 V) - ensures precise regulation in 2.5 V rail monitoring and low-voltage reference circuits. |
| Differential Resistance (rdiff) | 275 Ω typ. at IZ = 5 mA - maintains stable output voltage under small-signal current variations in feedback networks. |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² cathode copper - defines continuous DC operating limit in compact power management stages. |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs square wave - supports transient overvoltage suppression without failure in ESD-coupled signal lines. |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - enables use as low-drop rectifier or polarity protection element in auxiliary bias paths. |
| Reverse Current (IR) | 50 µA max at VR = 1 V - guarantees minimal leakage in high-impedance sensing nodes and battery-backed reference circuits. |
| Junction Temperature Range | −65 °C to +150 °C - permits operation in extended industrial environments including automotive under-hood auxiliary modules. |
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. Designed for reflow soldering using IPC-7095-compliant footprint (1.4 mm × 0.4 mm solder lands).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse breakdown current; thermal path to PCB copper via exposed cathode tab. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path; electrically isolated from thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SOD523 footprint | Enables placement in <1.5 mm² board area - critical for wearables, hearing aids, and miniaturized IoT sensor nodes. |
| ±2 % Zener voltage tolerance | Reduces need for post-production trimming in precision 2.4 V references used in ADC biasing and DAC output clamping. |
| Low 65 K/W junction-to-solder-point thermal resistance | Allows >2× higher pulsed power handling vs. standard SOD323 when mounted per Nexperia's recommended land pattern. |
| 40 W non-repetitive surge rating | Withstands IEC 61000-4-5 Level 3 surges (1 A, 500 ns) without parameter shift - suitable for CAN/LIN bus line protection. |
| −3.5 to −1.3 mV/K temperature coefficient | Provides predictable negative drift for compensation in temperature-stable bandgap references or sensor excitation circuits. |
Applications
| Power Supply Feedback Regulation | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Stabilizing output voltage in low-current LDO or switching regulator feedback divider. IC Role / Device Role / Timing Role: Zener reference providing accurate 2.4 V setpoint to error amplifier input. Use Value: Tight ±2 % tolerance eliminates need for resistor trimming; low rdiff prevents gain error under load transients. |
Use Scenario: Protecting microcontroller GPIO pins from accidental 5 V or 12 V misconnection. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage to 2.4 V + VF during fault condition. Use Value: 40 W surge rating absorbs 100 µs transients without degradation; SOD523 size fits near connector pads. |
| Low-Voltage Reference Source | Signal-Level DC Biasing |
|
Use Scenario: Generating stable 2.4 V bias for op-amp input stages in battery-powered instrumentation. IC Role / Device Role / Timing Role: Precision voltage reference replacing larger TL431-based solutions. Use Value: 50 µA max reverse leakage preserves battery life in always-on sensor nodes; −3.5 mV/K TC allows simple software compensation. |
Use Scenario: Establishing DC bias point for AC-coupled audio or sensor signal paths. IC Role / Device Role / Timing Role: Low-noise, low-drift DC reference anchoring signal mid-rail in single-supply amplifiers. Use Value: 275 Ω rdiff ensures minimal signal injection distortion; 1.1 V forward drop enables dual-role use as clamp + bias source. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F (Diodes Inc.) | 2.4 V ±5 %, SOT-323 package (1.7 × 1.3 mm), 200 mW Ptot, 200 Ω rdiff | Larger footprint, looser tolerance, lower surge rating (25 W) - less suitable for space-constrained precision designs. | Select when cost sensitivity outweighs size/tolerance requirements and thermal performance is secondary. |
| BZX384-B2V4 (Nexperia) | 2.4 V ±2 %, SOD-323 package (1.7 × 1.3 mm), 300 mW Ptot, 300 Ω rdiff, Rth(j-sp) = 120 K/W | Same electrical specs but 2.5× larger footprint and 85 % higher thermal resistance - reduces pulsed power margin. | Choose only if legacy SOD-323 layout reuse is mandatory and board area is unconstrained. |
Compared with MMBZ5221BS-7-F and BZX384-B2V4, BZX585-B2V4,115 offers superior space efficiency (45 % smaller area), tighter tolerance control, and 46 % lower junction-to-solder thermal resistance - directly improving reliability in thermally dense layouts and enabling higher-density mixed-signal PCBs.
Availability
BZX585-B2V4,115 is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage clamp protection, and low-voltage reference source applications requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX585-B2V4,115 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 leading semiconductor manufacturer specializing in high-performance, reliable discrete and logic devices, with core expertise in advanced packaging and automotive-grade qualification.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained, low-power regulation and protection tasks in consumer, industrial, and communications equipment where miniaturization and parametric consistency are critical.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C?
The absolute maximum continuous reverse current is derived from Ptot = 300 mW and VZ = 2.4 V, yielding IZ(max) ≈ 125 mA. However, the datasheet specifies a 200 mA forward current limit and does not define a separate continuous reverse current rating - operation above 5 mA is discouraged for long-term stability due to self-heating effects on voltage accuracy.
Can BZX585-B2V4,115 be used in place of a 2.5 V Zener in a voltage reference circuit?
No - its nominal Zener voltage is 2.4 V (2.35–2.45 V range), not 2.5 V. Substituting it for a 2.5 V part introduces a systematic 4 % error in reference level, which exceeds typical tolerance budgets for precision ADC references or voltage comparators. Use BZX585-B2V7 or BZX585-B2V7,115 for 2.7 V alternatives.
How does the SOD523 package affect thermal performance compared to SOD323?
The SOD523's smaller size reduces copper attachment area, but Nexperia optimized its cathode tab geometry to achieve Rth(j-sp) = 65 K/W - 46 % lower than the 120 K/W of the SOD323-packaged BZX384-B2V4. This enables higher pulsed power handling despite smaller footprint, confirmed by identical 40 W PZSM rating across both packages.
Is this Zener diode suitable for automotive applications?
No - the BZX585 series is not AEC-Q200 qualified. The datasheet explicitly states "Non-automotive qualified products" and prohibits use in safety-critical or automotive systems unless separately validated by the customer. For automotive-grade 2.4 V Zeners, consider Nexperia's Automotive Qualified BZX84 series (AEC-Q200 certified, SOT-23).
BZX585-B2V4,115 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):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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-B2V4,115 FAQ
1.How can I place an order for BZX585-B2V4,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B2V4,115 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-B2V4,115 reliable?
The price and inventory of BZX585-B2V4,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B2V4,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B2V4,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B2V4,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B2V4,115?
BZX585-B2V4,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B2V4,115 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-B2V4,115?
For technical support, including BZX585-B2V4,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B2V4,115 requirements.
6.How does Aetrix verify that BZX585-B2V4,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B2V4,115 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-B2V4,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B2V4,115?
All BZX585-B2V4,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B2V4,115, 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-B2V4,115 part is unused and in its original packaging.
Return procedure for BZX585-B2V4,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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