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Nexperia USA Inc. BZX585-B13,115
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- Part No.:
- BZX585-B13,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B13,115.pdf
- Description:
- DIODE ZENER 13V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:6,965
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Product details
Overview
BZX585-B13,115 from Nexperia is a ±2 % tolerance Zener diode with nominal 13 V regulation voltage in an ultra-compact SOD523 (SC-79) surface-mount package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision voltage reference and overvoltage protection in space-constrained DC power rails.
For engineers reviewing the BZX585-B13,115 datasheet, BZX585-B13,115 pinout, BZX585-B13,115 application, or BZX585-B13,115 equivalent, this device supports low-current regulation at 5 mA test current, features 25 Ω typical differential resistance, operates across −65 °C to +150 °C, and delivers stable 13 V clamping with ±2 % initial tolerance and low temperature coefficient.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 13 V at IZ = 5 mA, exhibiting 25 Ω typical differential resistance and a temperature coefficient of +7.0 mV/K at that current. Its SC-79 package enables high-density PCB layouts while maintaining thermal resistance of 65 K/W from junction to solder point.
The device complies with IEC 60134 absolute maximum ratings, supports non-repetitive surge currents up to 2.5 A (100 µs square wave), and maintains reverse leakage below 0.1 µA at 10.4 V. It is specified for operation from −65 °C to +150 °C junction temperature with FR4 board mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.35 V to 13.65 V at IZ = 5 mA - defines precise clamping threshold for 13 V nominal rail regulation |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance (rdiff) | 25 Ω typical at IZ = 5 mA - minimizes output voltage shift under load variation |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² copper - sets continuous DC power handling limit |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - enables transient overvoltage suppression without failure |
| Reverse Leakage Current (IR) | ≤ 0.1 µA at VR = 10.4 V - guarantees minimal quiescent current in standby regulation |
| Junction-to-Solder-Point Thermal Resistance | 65 K/W - allows predictable thermal rise during pulsed operation when cathode is soldered to PCB copper |
Pinout & Package
Package: SOD523 (SC-79), ultra-small flat-lead surface-mount plastic package measuring 1.25 mm × 0.85 mm × 0.65 mm (L × W × H), with cathode marked by a visible band on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-biased path for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | SOD523 package enables placement in <1.1 mm² board area - critical for wearables and miniaturized IoT sensors |
| Precision voltage reference | ±2 % tolerance at 13 V with 7.0 mV/K temperature coefficient - supports stable biasing in analog front-ends |
| Transient surge resilience | 40 W non-repetitive peak power rating - absorbs ESD and line transients without degradation |
| Low dynamic impedance | 25 Ω typical rdiff at 5 mA - maintains regulation accuracy across varying load currents |
| Wide operating temperature | −65 °C to +150 °C junction range - suitable for automotive under-hood and industrial control environments |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilization |
|---|---|
Use Scenario: Clamping a 12 V microcontroller supply rail against load-dump transients in automotive body electronics. IC Role / Device Role / Timing Role: Zener diode provides passive overvoltage protection by shunting excess energy to ground when rail exceeds 13 V. Use Value: Prevents MCU reset or latch-up during ISO 7637-2 pulse 5a events with no active control circuitry required. |
Use Scenario: Providing a stable 13 V reference for a 12-bit SAR ADC's internal voltage reference buffer. IC Role / Device Role / Timing Role: Acts as a low-noise, low-drift voltage source for precision analog-to-digital conversion. Use Value: Enables ≤0.5 LSB integral nonlinearity error due to ±2 % initial tolerance and 25 Ω rdiff. |
| Low-Power Sensor Biasing | USB-C Port Overvoltage Protection |
Use Scenario: Biasing a MEMS pressure sensor requiring a stable 13 V excitation voltage in battery-powered medical patch monitors. IC Role / Device Role / Timing Role: Supplies regulated excitation voltage with minimal quiescent current draw (≤0.1 µA leakage). Use Value: Extends battery life beyond 12 months while maintaining sensor full-scale accuracy within ±0.2 %. |
Use Scenario: Protecting USB-C port controller ICs from accidental 20 V adapter misconnection in portable docking stations. IC Role / Device Role / Timing Role: Fast-acting clamp limiting VBUS to 13.65 V before damage occurs to downstream PHY and PD controllers. Use Value: Survives 40 W surges (100 µs) without parametric shift, eliminating need for TVS diode redundancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C13,115 | ±5 % tolerance (vs. ±2 %); identical 13 V nominal, same SOD523 package and thermal specs | Acceptable where cost sensitivity outweighs precision requirement; higher IR (0.1 µA vs. 0.1 µA) and rdiff (25 Ω vs. 25 Ω typical) | Select for cost-driven consumer electronics where 13 V ±5 % is sufficient for basic rail supervision |
| MMSZ5243B-7-F | ±5 % tolerance; 13 V nominal; SOD-123 package (2.7 × 1.4 mm); 500 mW Ptot; 30 Ω rdiff | Larger footprint but higher continuous power; less suitable for ultra-dense layouts | Choose when board space permits and higher steady-state power margin is needed for extended thermal cycling |
Compared with BZX585-C13,115, the BZX585-B13,115 offers tighter voltage control essential for precision analog circuits; versus MMSZ5243B-7-F, it trades 200 mW lower Ptot for 54 % smaller board area-critical in wearable and implantable designs.
Availability
BZX585-B13,115 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and portable medical device power management requiring stable component supply and long-term obsolescence mitigation.
Supply support for BZX585-B13,115 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 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 transient protection in consumer, industrial, and automotive applications.
FAQ
What is the maximum continuous forward current for BZX585-B13,115?
The maximum continuous forward current is 200 mA per Absolute Maximum Ratings (Table 5). This rating applies under ambient conditions with proper PCB copper area; exceeding it risks permanent junction damage due to thermal runaway, even though the device is primarily operated in reverse breakdown.
Can BZX585-B13,115 be used in parallel for higher power handling?
No-parallel connection is not recommended due to mismatched Zener voltage tolerances and thermal coupling effects. Even with ±2 % units, minor VZ differences cause current hogging, leading to thermal instability and premature failure of the lower-voltage unit.
How does the 13 V Zener voltage behave across temperature?
At IZ = 5 mA, the temperature coefficient is +7.0 mV/K (Table 8), meaning VZ increases by ~7 mV per °C rise. From −40 °C to +85 °C, this results in a total shift of approximately ±0.88 V, remaining within system-level tolerance bands for most non-precision applications.
Is BZX585-B13,115 suitable for automotive under-hood use?
Yes-the device is qualified for junction temperatures up to +150 °C and meets IEC 60134 limiting values. However, it is not AEC-Q200 qualified; for automotive safety-critical systems, AEC-Q200-compliant alternatives must be selected per OEM requirements.
BZX585-B13,115 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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-B13,115 FAQ
1.How can I place an order for BZX585-B13,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B13,115 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-B13,115 reliable?
The price and inventory of BZX585-B13,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B13,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B13,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B13,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B13,115?
BZX585-B13,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B13,115 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-B13,115?
For technical support, including BZX585-B13,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B13,115 requirements.
6.How does Aetrix verify that BZX585-B13,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B13,115 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-B13,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B13,115?
All BZX585-B13,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B13,115, 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-B13,115 part is unused and in its original packaging.
Return procedure for BZX585-B13,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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