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Nexperia USA Inc. BZX585-C10,135
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- Part No.:
- BZX585-C10,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C10,135.pdf
- Description:
- DIODE ZENER 10V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,474
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Product details
Overview
BZX585-C10,135 from Nexperia is a ±5 % tolerance Zener diode in SOD523 (SC-79) package, rated for 10 V nominal regulation voltage, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power at 100 µs pulse width - used for precision voltage reference and overvoltage protection in space-constrained consumer and industrial power rails.
For engineers reviewing the BZX585-C10,135 datasheet, BZX585-C10,135 pinout, BZX585-C10,135 application, or BZX585-C10,135 equivalent, this device serves as a low-profile, low-capacitance (≤0.2 pF at VR = 0 V) Zener regulator with 10 V ±5 % tolerance, 20 Ω typical differential resistance at IZ = 5 mA, and thermal resistance of 65 K/W from junction to solder point - critical for stable biasing in portable sensor interfaces and USB-powered peripherals.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 10 V reference across its cathode-anode terminals under controlled current conditions. It exhibits a temperature coefficient of +4.5 mV/K at IZ = 5 mA and maintains regulation within ±5 % tolerance over ambient temperatures from −65 °C to +150 °C.
The device supports pulsed surge handling up to 40 W for 100 µs square-wave transients and delivers ≤0.2 µA reverse leakage at VR = 8 V, enabling reliable clamping in low-power microcontroller reset circuits and ADC reference stabilization without loading sensitive analog nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 10 V ±5 % - ensures predictable regulation threshold for 3.3 V/5 V system rail monitoring and brown-out detection. |
| Total Power Dissipation | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper - defines continuous DC bias capability in compact PCB layouts. |
| Differential Resistance | 20 Ω typ. at IZ = 5 mA - determines output impedance and load regulation sensitivity in feedback paths. |
| Non-repetitive Peak Power | 40 W at tp = 100 µs - enables transient overvoltage suppression without thermal runaway during ESD or inductive switching events. |
| Reverse Leakage Current | ≤0.2 µA at VR = 8 V - minimizes quiescent current draw in battery-backed circuits and high-impedance sensing nodes. |
| Junction-to-Solder-Point Rth | 65 K/W - allows accurate thermal modeling when mounted on standard SMD pads with cathode tab connection. |
| Diode Capacitance | ≤0.2 pF at f = 1 MHz, VR = 0 V - preserves signal integrity in RF-coupled or high-speed digital enable lines. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar for automated optical inspection. |
| 2 | Anode (A) | Connected to ground or current-limiting resistor; requires minimum 0.5 mm solder land per JEDEC SOT523 footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD523 footprint (1.25 × 0.85 mm) enables placement in <1.0 mm pitch routing zones on dense IoT PCBs. |
| Tight voltage tolerance | ±5 % at 10 V allows direct use in 3.3 V LDO enable thresholds and MCU VREF calibration without trimming resistors. |
| Ultra-low capacitance | ≤0.2 pF prevents signal distortion in 100+ MHz clock distribution networks and RF front-end bias lines. |
| Controlled thermal path | 65 K/W junction-to-solder-point resistance enables accurate thermal simulation for lifetime prediction in sealed enclosures. |
| Pulse surge robustness | 40 W non-repetitive rating supports IEC 61000-4-2 Level 4 ESD protection without external TVS cascading. |
Applications
| USB-C Power Delivery Interface | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Stabilizing 10 V reference for ADC input scaling in 4–20 mA loop-powered transmitters. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed bias point for op-amp gain-setting network. Use Value: 20 Ω differential resistance ensures <0.1 % full-scale error shift across 0–10 mA load variation on reference node. |
Use Scenario: Clamping transient voltages on USB-C CC line during hot-plug insertion. IC Role / Device Role / Timing Role: Fast-response overvoltage protector limiting CC line to 10 V before controller IC damage. Use Value: 0.2 pF capacitance avoids signal integrity degradation on 300 kHz CC communication waveform. |
| Portable Medical Pulse Oximeter | Smart Home Zigbee Node Power Rail |
|
Use Scenario: Regulating LED driver bias voltage in battery-operated SpO₂ sensor modules. IC Role / Device Role / Timing Role: Low-quiescent-current Zener maintaining constant forward voltage for red/IR LED current source. Use Value: ≤0.2 µA leakage at 8 V extends coin-cell battery life beyond 12 months in standby mode. |
Use Scenario: Providing stable 10 V supply for RF power amplifier bias in sub-GHz mesh nodes. IC Role / Device Role / Timing Role: Precision voltage clamp preventing PA gate overdrive during battery voltage sag. Use Value: ±5 % tolerance ensures consistent PA gain control across 2.8–3.6 V Li-ion operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B10,135 | ±2 % tolerance, 15 Ω rdiff at IZ = 5 mA, higher cost | Required where 10 V reference stability must stay within ±0.2 V over temperature and aging | Select for metrology-grade references or calibration circuitry demanding tighter initial accuracy. |
| MMSZ5240B-7-F | SOD-123 package (2.7 × 1.4 mm), 10 V ±5 %, 100 mW Ptot, 17 Ω rdiff | Used where board space allows larger footprint and lower power dissipation suffices | Choose when thermal constraints permit higher Rth(j-a) and legacy SOD-123 tooling is already deployed. |
Compared with BZX585-B10,135, the C10 offers relaxed tolerance but identical package and surge rating; versus MMSZ5240B-7-F, it delivers 3× higher power handling in 45 % less board area while maintaining matching voltage spec and leakage performance.
Availability
BZX585-C10,135 is available at Aetrix Electronics and suitable for USB-C interface protection, portable medical sensor biasing, industrial 4–20 mA transmitter references, and smart home RF node power rail stabilization requiring stable component supply and long-term obsolescence management.
Supply support for BZX585-C10,135 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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, 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 transient suppression in battery-powered and high-density PCB applications.
FAQ
What is the maximum continuous reverse current for BZX585-C10,135 at 25 °C?
The device supports a maximum continuous forward current of 200 mA, but for Zener operation, the recommended DC test current is 5 mA. At this condition, the Zener voltage is 10 V ±5 %, and power dissipation remains within the 300 mW limit. Exceeding 5 mA continuously increases self-heating and may shift regulation voltage due to temperature coefficient effects.
Can BZX585-C10,135 be used in place of a 1N4740A?
No - the 1N4740A is a through-hole DO-41 device rated for 10 V ±5 % but with 1 W power dissipation and 17 Ω differential resistance. BZX585-C10,135 has identical voltage spec but only 300 mW rating and 20 Ω rdiff, making it unsuitable for high-current linear regulator applications. It is designed for low-power SMD use only.
How does the cathode marking appear on the SOD523 package?
A single black bar is printed on the top surface adjacent to pin 1 (cathode), aligned parallel to the long edge of the 1.25 mm × 0.85 mm body. This matches JEDEC SOT523 outline and is verified in Figure 11 of the datasheet Rev. 8. The bar is detectable by AOI systems with ≥10 µm resolution.
Is BZX585-C10,135 qualified for automotive applications?
No - the BZX585 series is not AEC-Q200 qualified. Its datasheet explicitly states "Non-automotive qualified products" in Section 14, and no automotive stress testing or qualification data is provided. For automotive use, Nexperia recommends the PZUxxB2 series, which carries AEC-Q200 Grade 1 certification.
BZX585-C10,135 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:
- ±5%
- 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-C10,135 FAQ
1.How can I place an order for BZX585-C10,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C10,135 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-C10,135 reliable?
The price and inventory of BZX585-C10,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C10,135 is usually 5 days.
3.What payment methods are accepted for BZX585-C10,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C10,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C10,135?
BZX585-C10,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C10,135 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-C10,135?
For technical support, including BZX585-C10,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C10,135 requirements.
6.How does Aetrix verify that BZX585-C10,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-C10,135 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-C10,135 meets industry standards.
7.What is the process for return or replacement of BZX585-C10,135?
All BZX585-C10,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C10,135, 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-C10,135 part is unused and in its original packaging.
Return procedure for BZX585-C10,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C10,135 Tags
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MM5Z5V1ST1G
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