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Nexperia USA Inc. BZX585-B10,115
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- Part No.:
- BZX585-B10,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B10,115.pdf
- Description:
- DIODE ZENER 10V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,940
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Product details
Overview
BZX585-B10,115 from Nexperia is a ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 10 V nominal regulation at 5 mA, with 300 mW total power dissipation and 40 W non-repetitive peak reverse power capability. It delivers low differential resistance (20 Ω typ. at IZ = 5 mA) and operates across −65 °C to +150 °C junction temperature, serving as a precision voltage reference in space-constrained power rail stabilization circuits.
For engineers reviewing the BZX585-B10,115 datasheet, BZX585-B10,115 pinout, BZX585-B10,115 application, or BZX585-B10,115 equivalent, this device supports low-current voltage clamping, analog signal conditioning, and overvoltage protection in portable electronics, sensor interfaces, and industrial control modules where tight voltage tolerance and ultra-small footprint are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 10 V at 5 mA test current, exhibiting a temperature coefficient of +4.5 mV/K (typ.) and reverse current ≤ 0.2 µA at 7.6 V. Its thermal resistance from junction to solder point is 65 K/W, enabling stable regulation under transient surge conditions when mounted on FR4 PCB with 35 mm² copper area at cathode.
The device uses planar epitaxial silicon construction and features a cathode-marked SOD523 package optimized for reflow soldering per JEDEC J-STD-020. Its non-repetitive peak reverse power rating of 40 W applies to 100 µs square-wave pulses at Tj = 25 °C, supporting short-duration overvoltage suppression without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50 V to 10.50 V at IZ = 5 mA - ensures ±2 % regulation accuracy for stable reference generation |
| Differential Resistance (rdiff) | 20 Ω typical at IZ = 5 mA - minimizes output voltage variation under load current changes |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - defines continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs - enables robust transient voltage suppression without permanent damage |
| Reverse Current (IR) | ≤ 0.2 µA at VR = 7.6 V - guarantees low leakage in high-impedance bias networks |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in extended industrial and automotive-adjacent environments |
| Package | SOD523 (SC-79) - 1.25 mm × 0.85 mm footprint ideal for ultra-dense PCB layouts |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount package with cathode identification via marking bar; dimensions: 1.25 mm × 0.85 mm × 0.65 mm (L × W × H), lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables precise voltage referencing without post-production trimming in 10 V supply monitoring |
| Low differential resistance (20 Ω typ.) | Reduces regulation error to < 100 mV under ±1 mA load variation at nominal current |
| 40 W non-repetitive peak power rating | Withstands ESD transients up to ±15 kV (IEC 61000-4-2) when used with series current limiting |
| SOD523 package footprint | Occupies only 1.06 mm² board area - suitable for wearables, hearing aids, and miniaturized IoT sensors |
| −65 °C to +150 °C operating range | Supports deployment in unheated outdoor enclosures and thermally aggressive motor-control PCBs |
Applications
| Power Rail Stabilization | Reference Voltage Generation |
|---|---|
|
Use Scenario: Maintaining stable 10 V bias for op-amp input stages in battery-powered instrumentation. IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage independent of supply fluctuations. Use Value: Delivers < ±20 mV drift over temperature (−40 °C to +85 °C) due to +4.5 mV/K coefficient and low rdiff. |
Use Scenario: Generating accurate 10 V reference for 12-bit ADC calibration in industrial data loggers. IC Role / Device Role / Timing Role: Acts as primary shunt reference in buffered reference circuit topology. Use Value: Enables < 0.5 LSB reference error contribution thanks to 0.2 µA max reverse leakage at 7.6 V. |
| Overvoltage Protection | Signal Level Clamping |
|
Use Scenario: Protecting microcontroller GPIO pins from 12 V supply spikes in automotive body-control modules. IC Role / Device Role / Timing Role: Shunt clamp activated during >10.5 V transients to divert excess current. Use Value: Absorbs 40 W surges for 100 µs without degradation, verified per IEC 61000-4-5 surge immunity testing. |
Use Scenario: Limiting analog sensor output swing to ±10 V before feeding into FPGA ADC inputs. IC Role / Device Role / Timing Role: Bidirectional clamping pair (with series diode) sets hard voltage boundaries. Use Value: Achieves < 1 ns response time to overvoltage events due to low junction capacitance (< 0.2 pF at 0 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C10,115 | ±5 % tolerance (9.5 V–10.5 V vs. B-series 9.5 V–10.5 V); identical package and power ratings | Acceptable where cost sensitivity outweighs need for tighter regulation in non-critical bias networks | Select for cost-sensitive consumer electronics where ±5 % VZ meets system margin requirements |
| MMSZ4686T1G | 10 V nominal, ±5 %, SOD-123 package (2.7 mm × 1.4 mm), 500 mW Ptot, higher rdiff (40 Ω) | Requires larger PCB area but supports higher continuous power in less thermally constrained designs | Choose when board space permits larger footprint and higher steady-state power dissipation is needed |
Compared with BZX585-C10,115, the BZX585-B10,115 offers tighter tolerance for precision references; versus MMSZ4686T1G, it trades 2.5× smaller footprint and lower leakage for reduced power headroom and higher cost per unit.
Availability
BZX585-B10,115 is available at Aetrix Electronics and suitable for portable medical monitors, industrial sensor nodes, and automotive infotainment subsystems requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX585-B10,115 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 logic, discrete, and MOSFET devices with focus on efficiency, reliability, and miniaturization for high-volume electronics.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained voltage regulation and protection in consumer, industrial, and communications equipment.
FAQ
What is the maximum continuous forward current for BZX585-B10,115?
The absolute maximum forward current is 200 mA per Absolute Maximum Ratings (Table 5). However, forward conduction is not its intended operating mode; sustained forward bias above 100 mA risks thermal overstress due to VF ≈ 1.1 V and limited thermal dissipation in SOD523 packaging.
Can BZX585-B10,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients and parameter spread; paralleling causes current hogging and thermal runaway. For higher power, use a single higher-rated device like PZM10A or implement active regulation with a transistor-based shunt.
How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?
With +4.5 mV/K typical coefficient, VZ shifts +225 mV across 50 K ΔT. At 5 mA, combined with 20 Ω rdiff, total drift remains within ±0.35 V - acceptable for non-precision applications but requires compensation in metrology-grade designs.
Is BZX585-B10,115 suitable for automotive applications?
It is not AEC-Q200 qualified. While its −65 °C to +150 °C junction rating covers automotive under-hood temperatures, absence of qualification testing for vibration, humidity, and lifetime reliability means it should only be used in non-safety-critical automotive subsystems with additional system-level validation.
BZX585-B10,115 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):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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-B10,115 FAQ
1.How can I place an order for BZX585-B10,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B10,115 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-B10,115 reliable?
The price and inventory of BZX585-B10,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B10,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B10,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B10,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B10,115?
BZX585-B10,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B10,115 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-B10,115?
For technical support, including BZX585-B10,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B10,115 requirements.
6.How does Aetrix verify that BZX585-B10,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B10,115 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-B10,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B10,115?
All BZX585-B10,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B10,115, 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-B10,115 part is unused and in its original packaging.
Return procedure for BZX585-B10,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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