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Nexperia USA Inc. BZX585-C15,135
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- Part No.:
- BZX585-C15,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C15,135.pdf
- Description:
- DIODE ZENER 15V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:19,620
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Product details
Overview
BZX585-C15,135 from Nexperia is a ±5 % tolerance Zener diode in SOD523 (SC-79) package, rated for 15 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 (25–200 Ω) and operates across −65 °C to +150 °C junction temperature, serving as a compact voltage reference or clamp in space-constrained power rails.
For engineers reviewing the BZX585-C15,135 datasheet, BZX585-C15,135 pinout, BZX585-C15,135 application, or BZX585-C15,135 equivalent, this device is selected for precision low-power regulation where ultra-small footprint, stable 15 V Zener voltage, thermal robustness, and surge resilience in portable electronics and sensor signal conditioning are critical design requirements.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 15 V reference under regulated current conditions (IZ = 5 mA). Its ±5 % tolerance and temperature coefficient of +9.2 to +13.0 mV/K (at IZ = 5 mA) define its voltage drift behavior over temperature and current variation.
The device uses silicon PN-junction construction in an ultra-miniature SOD523 plastic package with cathode-marked lead configuration. Thermal resistance from junction to ambient is 350 K/W on FR4 PCB with 35 mm² copper area, limiting steady-state power handling without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25 V to 15.75 V at IZ = 5 mA - defines usable regulation window for 15 V rail stabilization |
| Tolerance | ±5 % - specifies maximum deviation from nominal 15 V under standard test conditions |
| Differential Resistance (rdiff) | 25 Ω (typ), 200 Ω (max) at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - sets maximum continuous DC power before thermal derating applies |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs square wave - enables transient overvoltage clamping in ESD/surge events |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - relevant for polarity-check or series protection configurations |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in extended industrial and automotive-adjacent environments |
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. Lead pitch 0.65 mm; anode and cathode leads extend symmetrically from opposite ends.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to circuit ground or lower-potential reference; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SOD523 package | Enables placement in high-density PCB layouts where board space is constrained below 1 mm² per device |
| ±5 % Zener voltage tolerance | Provides predictable 15 V regulation without post-production trimming in cost-sensitive consumer applications |
| Low differential resistance | Minimizes output voltage shift under varying load current (e.g., < 100 mV change over 1–10 mA IZ range) |
| 40 W non-repetitive surge rating | Clamps short-duration transients (e.g., ESD, inductive kickback) without failure when properly decoupled |
| −65 °C to +150 °C operating range | Supports deployment in unheated outdoor enclosures or near heat-generating components without derating |
Applications
| Power Supply Rail Clamp | Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 15 V supply rail against overvoltage spikes in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess current above 15.75 V. Use Value: Prevents damage to downstream LDOs and microcontrollers during load-dump or hot-swap events. |
Use Scenario: Providing stable 15 V reference for analog front-end amplifiers in industrial pressure sensors. IC Role / Device Role / Timing Role: Precision voltage reference source with low rdiff minimizing reference drift under varying bias current. Use Value: Enables ≤0.5 % full-scale error in 16-bit ADC measurements without active reference IC. |
| ESD Protection Interface | Microcontroller Reset Circuit |
Use Scenario: Protecting USB data lines from ±8 kV contact ESD per IEC 61000-4-2 using bidirectional clamping. IC Role / Device Role / Timing Role: Paired back-to-back Zeners (with complementary part) forming low-capacitance transient suppressor. Use Value: Limits line voltage to ±15.8 V while maintaining < 1 pF capacitance to preserve signal integrity up to 480 Mbps. |
Use Scenario: Generating clean reset pulse for ARM Cortex-M0+ MCU during brown-out recovery. IC Role / Device Role / Timing Role: Zener-based threshold detector feeding RC network to reset pin with hysteresis. Use Value: Ensures reliable reset assertion at 14.3 V (−5 % VZ) with minimal external components and no quiescent current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B15,135 | ±2 % tolerance (vs. ±5 %); tighter VZ spread (14.7–15.3 V) and lower rdiff (25 Ω typ) | Used where higher regulation accuracy is required, e.g., calibration references or metrology circuits | Select when VZ stability over temperature and current is prioritized over cost and availability |
| MMSZ5245B-7-F | Same 15 V nominal, ±5 %, but in SOD-123 package (2.7 × 1.4 mm); Ptot = 500 mW; rdiff = 17 Ω typ | Preferred for higher-power or legacy-layout compatibility; larger footprint allows better thermal dissipation | Choose when board layout accommodates larger package and higher continuous power handling is needed |
Compared with BZX585-B15,135, the C15 offers broader tolerance at lower cost and smaller size; versus MMSZ5245B-7-F, it trades off 200 mW lower power rating for 55 % smaller footprint and improved high-frequency transient response due to lower parasitic capacitance.
Availability
BZX585-C15,135 is available at Aetrix Electronics and suitable for portable medical monitors, industrial sensor nodes, USB peripheral power management, and automotive infotainment subsystems requiring stable component supply with rapid fulfillment and consistent parametric performance.
Supply support for BZX585-C15,135 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discrete, and MOSFET solutions with emphasis on reliability and energy efficiency.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, cost-effective voltage regulation and transient suppression in consumer, industrial, and communications equipment.
FAQ
What is the maximum continuous reverse current for BZX585-C15,135 at 25 °C ambient?
The absolute maximum forward current is 200 mA, but for Zener operation, the recommended continuous reverse current is limited by power dissipation: at 25 °C ambient, IZ must stay ≤ 20 mA to remain within the 300 mW Ptot limit (15 V × 20 mA = 300 mW). Derating is required above 25 °C per the Rth(j-a) = 350 K/W specification.
How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?
At IZ = 5 mA, the BZX585-C15 exhibits a typical temperature coefficient of +10.7 mV/K. Over a 125 K span (−40 °C to +85 °C), this yields ~1.34 V total drift - approximately ±4.5 % of nominal VZ. For tighter accuracy, use lower IZ or pair with compensation circuitry.
Can BZX585-C15,135 be used in bidirectional ESD protection configurations?
Yes - two BZX585-C15,135 devices mounted anode-to-anode form a symmetrical ±15 V clamping structure. This configuration achieves < 1.5 pF capacitance at 0 V bias and clamps ±8 kV ESD pulses per IEC 61000-4-2, making it suitable for high-speed data lines like I²C or UART.
What is the significance of the 'C' in BZX585-C15,135?
The 'C' denotes the ±5 % voltage tolerance grade within the BZX585 series. 'B' indicates ±2 % tolerance. The '15' specifies the nominal Zener voltage of 15 V, and '135' is Nexperia's internal package/variant code for the SOD523 tape-and-reel configuration (3,000 pcs/reel).
BZX585-C15,135 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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-C15,135 FAQ
1.How can I place an order for BZX585-C15,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C15,135 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-C15,135 reliable?
The price and inventory of BZX585-C15,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C15,135 is usually 5 days.
3.What payment methods are accepted for BZX585-C15,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C15,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C15,135?
BZX585-C15,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C15,135 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-C15,135?
For technical support, including BZX585-C15,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C15,135 requirements.
6.How does Aetrix verify that BZX585-C15,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-C15,135 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-C15,135 meets industry standards.
7.What is the process for return or replacement of BZX585-C15,135?
All BZX585-C15,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C15,135, 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-C15,135 part is unused and in its original packaging.
Return procedure for BZX585-C15,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C15,135 Tags
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MMSZ5231B-7-F
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MMSZ4682T1G
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MM5Z5V1ST1G
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