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Nexperia USA Inc. BZX585-B15,115
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- Part No.:
- BZX585-B15,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B15,115.pdf
- Description:
- DIODE ZENER 15V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:13,872
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Product details
Overview
BZX585-B15,115 from Nexperia is a ±2 % 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, used for precision voltage reference and overvoltage protection in compact DC power rails.
For engineers reviewing the BZX585-B15,115 datasheet, BZX585-B15,115 pinout, BZX585-B15,115 application, or BZX585-B15,115 equivalent, this part supports stable low-current regulation in space-constrained designs where thermal resistance to solder point (65 K/W) and fast transient suppression are critical selection criteria.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a tightly controlled 14.7 V to 15.3 V working voltage range at IZ = 5 mA. Its temperature coefficient of +9.2 to +13.0 mV/K enables predictable drift behavior under thermal variation, and its 0.05 µA maximum reverse current at VR = 12 V ensures minimal leakage in standby circuits.
The device uses planar epitaxial construction for stable long-term performance and features ultra-low capacitance (≤100 pF at 1 MHz, VR = 0 V), making it suitable for noise-sensitive analog references and high-frequency decoupling adjuncts in mixed-signal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 15 V at IZ = 5 mA - defines precise regulation point for feedback loops and reference generation |
| Voltage Tolerance | ±2 % - ensures tight output stability without post-production trimming in production-grade designs |
| Total Power Dissipation | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper - sets continuous DC load limit in compact layouts |
| Non-repetitive Peak Power | 40 W for tp = 100 µs square wave - enables robust transient surge clamping in ESD/overvoltage events |
| Differential Resistance | 25 Ω (typ) at IZ = 5 mA - determines regulation stiffness and output impedance in active bias networks |
| Junction-to-Solder-Point Rth | 65 K/W - quantifies thermal path efficiency for localized heat extraction via cathode pad |
| Reverse Current @ 12 V | ≤0.05 µA - guarantees negligible standby current draw in battery-powered or low-leakage monitoring circuits |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount package: 1.25 mm × 0.85 mm footprint, 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; carries reverse breakdown current and must be routed to thermal copper for power handling |
| 2 | Anode (A) | Connected to ground or lower-potential rail; serves as reference return path and defines polarity for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD523 footprint (1.25 × 0.85 mm) enables placement in dense PCB areas where height clearance < 0.65 mm is required |
| Tight voltage tolerance | ±2 % at 5 mA allows direct use in 1% accuracy feedback paths without external calibration |
| Controlled temperature coefficient | +9.2 to +13.0 mV/K minimizes drift-induced error in temperature-varying environments like industrial enclosures |
| Ultra-low leakage | ≤0.05 µA at 12 V reverse bias maintains >100 MΩ effective isolation in high-impedance sensing nodes |
| High surge robustness | 40 W non-repetitive peak power rating supports IEC 61000-4-5 Level 3 surge immunity when paired with series impedance |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 15 V reference for op-amp comparators and ADC voltage dividers in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, sinking excess current to maintain fixed node potential. Use Value: ±2 % tolerance and 25 Ω rdiff ensure reference deviation remains < ±0.3 V across 1–10 mA load variations. |
Use Scenario: Protecting microcontroller GPIO pins from 24 V field-side transients in PLC I/O modules. IC Role / Device Role / Timing Role: Clamps induced surges above 15 V by entering reverse conduction before downstream IC damage thresholds. Use Value: 40 W peak power rating absorbs 100 µs transients up to 2.67 A without degradation, per IZSM = 2.0 A spec. |
| Low-Power Bias Network | Temperature-Stable Oscillator Trim |
|
Use Scenario: Generating bias current for discrete transistor amplifiers in portable audio preamps with single-cell Li-ion supply. IC Role / Device Role / Timing Role: Functions as constant-current sink via series resistor, leveraging stable Zener voltage to set IC. Use Value: 0.05 µA max IR at 12 V ensures < 5 nA error current, preserving bias accuracy in nanoamp-level analog stages. |
Use Scenario: Compensating varactor tuning voltage drift in VCO-based RF transceivers operating from −40 °C to +85 °C. IC Role / Device Role / Timing Role: Supplies temperature-compensated reference to varactor control line, counteracting oscillator frequency drift. Use Value: +9.2 to +13.0 mV/K TC matches typical varactor sensitivity, reducing overall ppm/°C drift by >40 % vs. untrimmed designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C15 | ±5 % tolerance (vs. ±2 %); otherwise identical package, power rating, and Zener voltage range | Acceptable where cost sensitivity outweighs need for tight regulation; higher binning yield lowers unit price | Select for non-critical biasing or clamping where ±5 % (14.25–15.75 V) meets system margin requirements |
| MMSZ5245B-7-F | Same 15 V nominal, ±5 %, but in SOD-123 package (2.7 × 1.6 mm); 500 mW Ptot; higher rdiff (30 Ω typ) | Larger footprint and higher thermal resistance (Rth(j-a) ≈ 400 K/W) reduce suitability for ultra-dense layouts | Choose only if board space permits larger package and higher continuous power (500 mW) is required for sustained loads |
Compared with BZX585-C15, the BZX585-B15,115 offers tighter regulation for precision references; versus MMSZ5245B-7-F, it provides superior space efficiency and thermal performance in miniaturized designs despite lower total power rating.
Availability
BZX585-B15,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical monitors, and automotive body-control module power supervisors requiring stable component supply with full traceability and no obsolescence risk through 2030.
Supply support for BZX585-B15,115 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 focused on high-volume, high-reliability standard logic, analog, and discrete components, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, thermally efficient voltage regulation and transient protection in space-constrained, cost-sensitive applications.
FAQ
What is the maximum continuous forward current rating for BZX585-B15,115?
The absolute maximum forward current is 200 mA per limiting values table, but forward conduction is not its intended operating mode. In normal Zener regulation, it conducts only in reverse breakdown; forward voltage is 1.1 V at 100 mA pulse, and continuous forward bias risks thermal overstress due to low thermal mass.
Can BZX585-B15,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, slight VZ mismatches cause current hogging. Parallel connection without individual ballast resistors leads to thermal runaway and premature failure; use a single higher-rated device instead.
How does the SOD523 package affect thermal performance compared to SOD-123?
The SOD523 package has significantly lower junction-to-solder-point thermal resistance (65 K/W vs. ~120 K/W for SOD-123), enabling more efficient heat transfer from the cathode pad to PCB copper. This allows higher pulsed power handling in compact layouts but requires careful pad design per Nexperia's reflow footprint guidelines.
Is BZX585-B15,115 suitable for automotive applications?
No - this part is not AEC-Q200 qualified. Nexperia explicitly states in legal disclaimers that non-automotive qualified products are unsuitable for automotive use. For automotive applications, select the AEC-Q200 qualified BZX84 series or equivalent qualified Zeners with validated reliability testing.
BZX585-B15,115 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):
- 15 V
- Tolerance:
- ±2%
- 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-B15,115 FAQ
1.How can I place an order for BZX585-B15,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B15,115 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-B15,115 reliable?
The price and inventory of BZX585-B15,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B15,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B15,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B15,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B15,115?
BZX585-B15,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B15,115 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-B15,115?
For technical support, including BZX585-B15,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B15,115 requirements.
6.How does Aetrix verify that BZX585-B15,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B15,115 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-B15,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B15,115?
All BZX585-B15,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B15,115, 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-B15,115 part is unused and in its original packaging.
Return procedure for BZX585-B15,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B15,115 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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