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Nexperia USA Inc. BZX585-B16,115
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- Part No.:
- BZX585-B16,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B16,115.pdf
- Description:
- DIODE ZENER 16V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:128
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Product details
Overview
BZX585-B16,115 from Nexperia is a ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 16 V nominal Zener voltage at 5 mA, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power. It delivers low differential resistance (50 Ω typ. at IZ = 5 mA) and operates in general-purpose voltage regulation circuits requiring compact, surface-mount stable reference clamping.
For engineers reviewing the BZX585-B16,115 datasheet, BZX585-B16,115 pinout, BZX585-B16,115 application, or BZX585-B16,115 equivalent, this part supports precision DC biasing, overvoltage protection, and low-power reference generation in space-constrained consumer and industrial PCBs where thermal resistance to ambient (350 K/W) and cathode-marked polarity are critical layout considerations.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified nominal Zener voltage of 16.0 V (min 15.2 V, max 16.8 V) at IZ = 5 mA, exhibiting a temperature coefficient of +10.4 to +14.0 mV/K across its operating current range. Its low 50 Ω typical differential resistance ensures stable regulation under small-signal load variations.
The device uses an ultra-small SOD523 plastic package with 2 leads, cathode identified by a marking bar, and is characterized for operation from −65 °C to +150 °C junction temperature. Thermal resistance from junction to solder point is 65 K/W, enabling reliable performance on FR4 PCBs with ~35 mm² copper area at the cathode tab.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.0 V nominal at IZ = 5 mA; min 15.2 V / max 16.8 V defines regulation window for precision biasing |
| Tolerance | ±2 %; enables tighter output voltage control than ±5 % variants in feedback or reference paths |
| Differential Resistance (rdiff) | 50 Ω typical at IZ = 5 mA; low impedance maintains stable voltage under varying load currents |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB; sets maximum continuous DC power handling capability |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs square wave; supports transient surge suppression without failure |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA; defines forward conduction loss during polarity-reversal fault conditions |
| Reverse Current (IR) | 0.05 µA max at VR = 11.2 V; ensures minimal leakage below breakdown threshold |
Pinout & Package
Package: SOD523 (SC-79), ultra-small flat lead surface-mount plastic package with cathode marked by a visible bar on the body. Dimensions: 1.25 mm × 0.85 mm × 0.65 mm (L × W × H), 2-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SMD footprint | SOD523 package (1.25 × 0.85 mm) enables high-density routing in wearables and IoT sensor nodes |
| Low differential resistance | 50 Ω typical at 5 mA improves regulation accuracy under dynamic load steps |
| Controlled temperature coefficient | +10.4 to +14.0 mV/K allows predictable drift compensation in temperature-sensitive references |
| High surge robustness | 40 W non-repetitive peak power rating protects downstream circuitry from ESD or inductive transients |
| Low leakage current | ≤0.05 µA at 11.2 V minimizes standby power loss in battery-powered systems |
Applications
| Power Supply Rail Clamping | Microcontroller I/O Protection |
|---|---|
|
Use Scenario: Clamping 16 V supply rail against overvoltage events in low-power sensor modules. IC Role / Device Role / Timing Role: Zener diode provides shunt-based voltage limiting by conducting excess current above 16 V. Use Value: Prevents damage to 16 V-rated analog front-end ICs during input surge, leveraging 40 W peak power handling. |
Use Scenario: Protecting 3.3 V microcontroller GPIO pins from accidental 16 V misconnection. IC Role / Device Role / Timing Role: Acts as a bidirectional clamp-forward conducts at ~1.1 V, reverse regulates at 16 V. Use Value: Limits pin voltage to safe levels using inherent forward/reverse characteristics, eliminating need for external series resistor. |
| Reference Voltage Source | Signal Level Translation |
|
Use Scenario: Generating a stable 16 V reference for ADC full-scale calibration in portable test equipment. IC Role / Device Role / Timing Role: Provides fixed Zener voltage with ±2 % tolerance and low rdiff for accurate scaling. Use Value: Enables <1 % full-scale error in 12-bit ADC systems due to tight voltage tolerance and 50 Ω regulation impedance. |
Use Scenario: Translating a 0–16 V analog sensor output to a 0–3.3 V MCU-compatible range via resistive divider + Zener clamp. IC Role / Device Role / Timing Role: Clamps divider output at 16 V to prevent saturation and ensure linear response up to full scale. Use Value: Maintains signal integrity across temperature (−65 °C to +150 °C) with predictable +12.4 mV/K drift behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C16,115 | ±5 % tolerance (vs. ±2 %); otherwise identical package, power ratings, and Zener voltage range | Acceptable where cost sensitivity outweighs precision requirement; higher VZ spread increases calibration overhead | Select when budget constraints dominate and system-level trimming compensates for wider tolerance |
| MMSZ5245B-7-F | SOD-123 package (larger); 16 V nominal, ±5 %; 500 mW Ptot; rdiff = 17 Ω typ. | Higher power handling but larger footprint; better regulation impedance but incompatible with ultra-dense layouts | Choose when thermal margin > board area constraint, e.g., in industrial power supplies with forced airflow |
Compared with BZX585-C16,115, the BZX585-B16,115 offers tighter voltage control essential for untrimmed references; versus MMSZ5245B-7-F, it trades 200 mW lower power for 40 % smaller PCB area-critical in miniaturized designs where thermal design accommodates 300 mW.
Availability
BZX585-B16,115 is available at Aetrix Electronics and suitable for power supply rail clamping, microcontroller I/O protection, reference voltage sourcing, and signal level translation requiring stable component supply in high-mix, low-volume production.
Supply support for BZX585-B16,115 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 optimized for efficiency and miniaturization in mass-market electronics.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, cost-effective voltage regulation and protection in consumer, computing, and industrial applications where SOD523 footprint and ±2 % precision are prioritized.
FAQ
What is the maximum continuous reverse current this Zener can handle at 16 V?
The BZX585-B16,115 has no specified maximum continuous reverse current; instead, its steady-state limit is governed by total power dissipation. At 16 V, the maximum continuous Zener current is 18.75 mA (300 mW ÷ 16 V), assuming Tamb = 25 °C on an FR4 board with 35 mm² copper at the cathode.
Can this diode be used in series for higher voltage regulation?
Yes-multiple BZX585-B16,115 diodes may be connected in series to achieve higher regulated voltages (e.g., two in series yield ~32 V), but voltage distribution depends on matching tolerance and temperature coefficients; parallel connection is not recommended due to mismatch-induced current hogging.
How does the marking code 'EA' correspond to BZX585-B16?
Per Table 4 of the datasheet, 'EA' is the top-side marking for BZX585-B16; the 'E' denotes the 16 V nominal voltage group, and 'A' indicates the B-series (±2 % tolerance) variant-distinct from 'HA', which marks the C-series (±5 %) version of the same voltage.
Is thermal derating required above 25 °C ambient?
Yes-power dissipation must be linearly derated above 25 °C ambient. With Rth(j-a) = 350 K/W, the allowable Ptot decreases by 0.857 mW/°C above 25 °C; at 85 °C ambient, maximum continuous power drops to 248 mW (300 mW − 60 K × 0.857 mW/K).
BZX585-B16,115 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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX585-B16,115 FAQ
1.How can I place an order for BZX585-B16,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B16,115 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-B16,115 reliable?
The price and inventory of BZX585-B16,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B16,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B16,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B16,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B16,115?
BZX585-B16,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B16,115 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-B16,115?
For technical support, including BZX585-B16,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B16,115 requirements.
6.How does Aetrix verify that BZX585-B16,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B16,115 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-B16,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B16,115?
All BZX585-B16,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B16,115, 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-B16,115 part is unused and in its original packaging.
Return procedure for BZX585-B16,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B16,115 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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