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Nexperia USA Inc. BZX585-B10,135
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- Part No.:
- BZX585-B10,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B10,135.pdf
- Description:
- DIODE ZENER 10V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:34,236
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Product details
Overview
BZX585-B10,135 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 monitoring circuits.
For engineers reviewing the BZX585-B10,135 datasheet, BZX585-B10,135 pinout, BZX585-B10,135 application, or BZX585-B10,135 equivalent, this device is selected for low-profile voltage clamping, overvoltage protection in portable battery management systems, and stable biasing in analog sensor front-ends where thermal stability and tight voltage tolerance 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 low 20 Ω typical differential resistance ensures minimal voltage drift under load variation.
The device uses planar epitaxial construction in an ultra-small SOD523 package, enabling high-density PCB layouts. Thermal resistance from junction to solder point is 65 K/W, supporting reliable operation up to 150 °C junction temperature when mounted on FR4 with 35 mm² copper area at the cathode tab.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50 V to 10.50 V at IZ = 5 mA - defines precise regulation window for 10 V rail stabilization |
| Tolerance | ±2 % - enables tighter output voltage control vs. ±5 % variants in feedback loops |
| Differential Resistance (rdiff) | 20 Ω typ. at IZ = 5 mA - minimizes output impedance and improves load regulation |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - sets continuous DC power limit for thermal design |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - supports transient surge suppression without failure |
| Reverse Current (IR) | ≤ 0.2 µA at VR = 7.6 V - ensures low leakage in standby or low-power modes |
| Junction Temperature Range | −65 °C to +150 °C - qualifies for industrial and extended-temperature embedded applications |
Pinout & Package
Package: SOD523 (SC-79), ultra-small flat-lead surface-mount plastic package with 2 leads; dimensions: 1.25 mm × 0.85 mm × 0.65 mm max height; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal; reverse-biased during Zener operation |
| 2 (A) | Anode | Connected to ground or lower-potential reference; completes reverse-bias path for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD523 footprint (1.25 × 0.85 mm) enables placement in <1.0 mm board height constraints |
| Tight voltage tolerance | ±2 % ensures regulation accuracy within ±0.2 V at 10 V, reducing need for post-regulation trimming |
| High surge robustness | 40 W non-repetitive peak power withstand supports ESD and lightning-induced transients per IEC 61000-4-5 |
| Stable temperature coefficient | +4.5 mV/K (typ.) allows predictable voltage drift compensation in temperature-critical bias networks |
| Low thermal resistance | 65 K/W junction-to-solder-point enables >200 mA pulsed current handling with controlled ΔT |
Applications
| Power Rail Monitoring | Overvoltage Protection |
|---|---|
|
Use Scenario: Monitoring 12 V automotive accessory rail for brownout or overvoltage events in infotainment head units. IC Role / Device Role / Timing Role: Zener diode provides reference voltage to comparator input; clamps excess voltage above 10.5 V. Use Value: Prevents false triggering due to ±2 % tolerance and maintains detection threshold stability across −40 °C to +85 °C ambient. |
Use Scenario: Protecting USB-C port VBUS line from transient surges during hot-plug events. IC Role / Device Role / Timing Role: Acts as shunt clamp in parallel with TVS diode; absorbs sub-100 µs energy spikes before TVS activates. Use Value: 40 W non-repetitive peak power rating handles 10/1000 µs surge waveforms without degradation. |
| Reference Voltage Source | Current-Limited Bias Generator |
|
Use Scenario: Providing stable 10 V reference for ADC voltage divider in industrial temperature transmitter. IC Role / Device Role / Timing Role: Supplies fixed reference to precision resistor network; operates continuously at 5 mA. Use Value: 20 Ω differential resistance limits reference voltage shift to <10 mV under ±1 mA load variation. |
Use Scenario: Generating 10 V bias for op-amp input stage in battery-powered gas sensor signal conditioning. IC Role / Device Role / Timing Role: Zener + series resistor forms simple, low-quiescent-current bias source. Use Value: 0.2 µA reverse leakage at 7.6 V ensures <100 nA standby current draw, extending battery life. |
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 same min/max, but wider distribution); identical package and power ratings | Acceptable where cost sensitivity outweighs regulation precision; higher binning yield lowers unit price | Select when system-level calibration compensates for voltage variance or when 10 V nominal is used only for coarse threshold detection |
| MMSZ5240B-7-F | Same 10 V nominal, ±5 %, SOD-123 package (2.7 × 1.4 mm); 500 mW Ptot, higher thermal mass but larger footprint | Better sustained power handling; unsuitable for ultra-dense layouts requiring SOD523 size | Choose when board space permits larger package and continuous dissipation >300 mW is required |
Compared with BZX585-C10,115 and MMSZ5240B-7-F, the BZX585-B10,135 uniquely balances ±2 % precision, SOD523 miniaturization, and 40 W surge capability-making it optimal for compact, high-accuracy, transient-resilient regulation where both size and specification tightness are non-negotiable.
Availability
BZX585-B10,135 is available at Aetrix Electronics and suitable for power rail monitoring, overvoltage protection, and reference voltage source applications requiring stable component supply, consistent parametric performance, and long-term obsolescence mitigation.
Supply support for BZX585-B10,135 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 markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained voltage regulation and clamping in portable, wearables, and IoT edge nodes where ultra-small footprint and tight tolerance are essential.
FAQ
What is the maximum continuous forward current for BZX585-B10,135?
The absolute maximum forward current is 200 mA per limiting values table. However, forward conduction is not its intended operating mode; the device is designed for reverse-bias Zener operation. Forward voltage is specified at 1.1 V max (IF = 100 mA), confirming robustness during accidental polarity reversal but not for sustained forward use.
Can BZX585-B10,135 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. The datasheet specifies single-device operation only. For higher power, use a single higher-rated Zener or implement active regulation instead.
How does the ±2 % tolerance affect circuit accuracy at elevated temperatures?
At 10 V nominal, ±2 % equals ±0.2 V at 25 °C. With a +4.5 mV/K temperature coefficient, drift adds ±0.45 V over a 100 K rise (−25 °C to +75 °C), resulting in total uncertainty of ±0.65 V. This must be budgeted in feedback loop margins or compensated via external circuitry.
Is BZX585-B10,135 suitable for automotive applications?
No-the datasheet explicitly states "non-automotive qualified products" and confirms no AEC-Q200 qualification. It lacks automotive-grade screening, extended reliability testing, and guaranteed PPAP documentation. Use only in commercial or industrial environments unless independently qualified by the end customer.
BZX585-B10,135 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-B10,135 FAQ
1.How can I place an order for BZX585-B10,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B10,135 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-B10,135 reliable?
The price and inventory of BZX585-B10,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B10,135 is usually 5 days.
3.What payment methods are accepted for BZX585-B10,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B10,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B10,135?
BZX585-B10,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B10,135 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-B10,135?
For technical support, including BZX585-B10,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B10,135 requirements.
6.How does Aetrix verify that BZX585-B10,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-B10,135 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-B10,135 meets industry standards.
7.What is the process for return or replacement of BZX585-B10,135?
All BZX585-B10,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B10,135, 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-B10,135 part is unused and in its original packaging.
Return procedure for BZX585-B10,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B10,135 Tags
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