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Nexperia USA Inc. BZX585-C36,115
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- Part No.:
- BZX585-C36,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C36,115.pdf
- Description:
- DIODE ZENER 36V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
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Product details
Overview
BZX585-C36,115 from Nexperia is a ±5 % tolerance Zener diode in SOD523 (SC-79) package, rated for 36 V nominal Zener voltage at 2 mA test current, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power handling. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZX585-C36,115 datasheet, BZX585-C36,115 pinout, BZX585-C36,115 application, or BZX585-C36,115 equivalent, this device is selected for compact voltage regulation where tight tolerance, low thermal resistance (65 K/W junction-to-solder-point), and ultra-small footprint are critical in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 34.2 V (min) to 37.8 V (max) at IZ = 2 mA, exhibiting a typical differential resistance of 80 Ω and temperature coefficient of +33.0 mV/K. Its low 0.05 µA reverse leakage at 27 V ensures minimal quiescent current draw in standby regulation paths.
The SOD523 package enables high-density placement with thermal resistance from junction to solder point at 65 K/W, supporting reliable operation up to 150 °C junction temperature. Pulse surge capability is defined for 100 µs square-wave transients at 25 °C ambient prior to surge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.2 V min to 37.8 V max at IZ = 2 mA - defines stable regulation window under nominal bias |
| Tolerance | ±5 % - allows predictable voltage margin for non-critical reference applications |
| Differential Resistance (rdiff) | 80 Ω typ at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² copper - sets continuous DC power limit |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs - supports transient overvoltage clamping without failure |
| Junction-to-Solder-Point Thermal Resistance (Rth(j-sp)) | 65 K/W - enables efficient heat transfer to PCB copper, critical for thermal reliability |
| Reverse Leakage Current (IR) | 0.05 µA max at VR = 27 V - ensures negligible standby current in battery-powered systems |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount plastic 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 |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SOD523 footprint | Enables placement in <1.1 mm² board area - ideal for wearables and miniaturized IoT sensors |
| Low differential resistance | 80 Ω typ ensures <1 % output deviation across ±1 mA load variation at 36 V |
| Controlled temperature coefficient | +33.0 mV/K enables predictable drift compensation in temperature-stable references |
| High surge robustness | 40 W peak pulse rating protects downstream circuitry from ESD or inductive kick events |
| Low thermal resistance to solder point | 65 K/W allows >200 mW sustained dissipation on standard 35 mm² FR4 copper pad |
Applications
| Power Rail Clamp | Reference Voltage Source |
|---|---|
|
Use Scenario: Clamping 3.3 V or 5 V logic supply against transient spikes in microcontroller-based sensor nodes. IC Role / Device Role / Timing Role: Zener diode placed between rail and ground to shunt excess energy during ESD or switching noise events. Use Value: 40 W non-repetitive surge rating absorbs 100 µs transients without degradation, preserving IC integrity. |
Use Scenario: Providing stable 36 V reference for ADC input scaling in industrial analog front-ends. IC Role / Device Role / Timing Role: Reverse-biased Zener supplying fixed voltage to op-amp feedback network or DAC reference divider. Use Value: ±5 % tolerance and 80 Ω rdiff ensure <0.5 % full-scale error contribution in 12-bit measurement systems. |
| Low-Power Bias Generator | Overvoltage Protection Circuit |
|
Use Scenario: Generating bias voltage for JFET amplifiers or photodiode transimpedance stages in portable medical devices. IC Role / Device Role / Timing Role: Zener supplies gate bias or reference current with minimal quiescent draw. Use Value: 0.05 µA reverse leakage at 27 V enables multi-year battery life in always-on monitoring circuits. |
Use Scenario: Protecting USB-C PD interface ICs from input overvoltage during adapter hot-plug events. IC Role / Device Role / Timing Role: Primary clamping element in series with TVS diode to handle fast-rising surges above 30 V. Use Value: 34.2–37.8 V Zener range provides precise trip threshold aligned with 36 V PD specification limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B36,115 | ±2 % tolerance (vs. ±5 %), tighter 35.3–36.7 V Zener range, higher cost | Required where <0.3 % reference accuracy is mandatory, e.g., precision instrumentation calibration | Select when absolute voltage stability outweighs cost sensitivity and board space constraints |
| MMSZ5245B-7-F | SOD-123 package (2.7 × 1.4 mm), 36 V ±5 %, 500 mW Ptot, 90 Ω rdiff | Higher power handling but 2.3× larger footprint; suited for less space-constrained designs | Choose when thermal margin >300 mW is needed and PCB real estate permits larger package |
Compared with BZX585-B36,115, the C-series offers cost-effective tolerance for non-critical regulation; versus MMSZ5245B-7-F, it trades power headroom for 60 % smaller area-critical in wearable and hearing aid PCBs.
Availability
BZX585-C36,115 is available at Aetrix Electronics and suitable for power rail clamping, reference voltage generation, low-power biasing, and overvoltage protection requiring stable component supply in high-mix, low-volume production.
Supply support for BZX585-C36,115 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, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and sustainability.
The BZX585 series targets space-constrained, low-power voltage regulation needs across consumer, industrial, and communications equipment-designed specifically for SOD523 integration without sacrificing Zener performance.
FAQ
What is the maximum continuous forward current for BZX585-C36,115?
The device is not intended for forward conduction; its absolute maximum forward current is 200 mA per limiting values table, but forward voltage reaches only 1.1 V at 100 mA pulse (tp ≤ 300 µs). Continuous forward bias risks thermal runaway and must be avoided in design.
Can BZX585-C36,115 be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and mismatched VZ tolerances, causing current hogging and thermal instability. Parallel operation is not recommended; use a single higher-rated device or active regulation instead.
How does the cathode marking appear on the SOD523 package?
A visible bar or band is printed on the top surface adjacent to pin 1 (cathode); this matches the simplified outline in Figure 11 and corresponds to the "K" terminal in Table 2, ensuring correct orientation during automated placement.
Is BZX585-C36,115 qualified for automotive applications?
No-this part is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. Nexperia explicitly states non-automotive qualification in Section 14 of the datasheet; use automotive-grade alternatives like BZX84-C36 for such applications.
BZX585-C36,115 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):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 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-C36,115 FAQ
1.How can I place an order for BZX585-C36,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C36,115 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-C36,115 reliable?
The price and inventory of BZX585-C36,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C36,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C36,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C36,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C36,115?
BZX585-C36,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C36,115 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-C36,115?
For technical support, including BZX585-C36,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C36,115 requirements.
6.How does Aetrix verify that BZX585-C36,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C36,115 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-C36,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C36,115?
All BZX585-C36,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C36,115, 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-C36,115 part is unused and in its original packaging.
Return procedure for BZX585-C36,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C36,115 Tags
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