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Nexperia USA Inc. BZX585-B5V1,115
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- Part No.:
- BZX585-B5V1,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B5V1,115.pdf
- Description:
- DIODE ZENER 5.1V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,195
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Product details
Overview
BZX585-B5V1,115 from Nexperia is a ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 5.1 V nominal regulation at 5 mA, with 400 Ω typical differential resistance and 300 mW total power dissipation. It serves as a precision voltage reference or overvoltage clamp in low-power analog sensing and power rail stabilization circuits.
For engineers reviewing the BZX585-B5V1,115 datasheet, BZX585-B5V1,115 pinout, BZX585-B5V1,115 application, or BZX585-B5V1,115 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (65 K/W junction-to-solder-point), non-repetitive surge capability (40 W, 100 µs), cathode-marked polarity, and SOD523 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 5.1 V regulation voltage at IZ = 5 mA, exhibiting a temperature coefficient of −2.7 to −0.5 mV/K across its operating current range. Its low 400 Ω differential resistance ensures stable output under varying load conditions.
The device features ultra-small SOD523 packaging with 0.34 mm lead pitch and cathode band marking, optimized for reflow soldering on FR4 PCBs with ≥35 mm² copper area at the cathode tab. Thermal resistance from junction to solder point is 65 K/W, enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.00 V to 5.20 V at IZ = 5 mA - defines precise regulation threshold for 3.3 V/5 V rail monitoring |
| Tolerance | ±2 % - enables tighter voltage margin control than ±5 % variants in feedback loops |
| Differential Resistance (rdiff) | 400 Ω typical at IZ = 5 mA - determines output impedance and load regulation error |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² Cu - sets maximum continuous DC power handling |
| Non-repetitive Peak Power (PZSM) | 40 W for 100 µs square wave - supports transient overvoltage clamping without failure |
| Reverse Current (IR) | ≤2.0 µA at VR = 3.0 V - ensures minimal leakage in high-impedance bias networks |
| Junction-to-Solder-Point Rth | 65 K/W - enables predictable thermal rise during pulsed operation with localized copper heatsinking |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount package with cathode band marking; dimensions: 1.25 mm × 0.85 mm × 0.65 mm max height; 0.34 mm lead pitch; 2-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; accepts reverse-bias current during Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD523 packaging | Enables placement in space-constrained areas such as wearable sensor modules and portable battery management ICs |
| ±2 % Zener voltage tolerance | Reduces calibration overhead in precision ADC reference dividers and comparator hysteresis networks |
| 40 W non-repetitive surge rating | Clamps ESD transients per IEC 61000-4-2 Level 4 (8 kV contact) without degradation |
| 65 K/W junction-to-solder-point thermal resistance | Allows direct thermal coupling to PCB copper pour for sustained 200 mA forward current handling |
| Cathode band polarity marking | Eliminates orientation errors during automated optical inspection (AOI) and pick-and-place assembly |
Applications
| Power Rail Clamp | ADC Reference Divider |
|---|---|
Use Scenario: Protecting 5 V microcontroller I/O pins from supply rail overshoot during hot-swap events. IC Role / Device Role / Timing Role: Zener clamping element placed between I/O line and ground, conducting above 5.2 V. Use Value: Limits transient voltage to ≤5.2 V using 40 W surge capability, preventing latch-up in CMOS input stages. |
Use Scenario: Generating a stable 2.5 V reference from a 5 V supply for 12-bit SAR ADC conversion. IC Role / Device Role / Timing Role: Precision shunt reference in resistive divider network feeding ADC REF+ pin. Use Value: ±2 % tolerance and 400 Ω rdiff ensure <0.5 LSB reference error across 1–10 mA load variation. |
| Comparator Hysteresis | Low-Power Sensor Bias |
Use Scenario: Setting upper/lower thresholds in a battery voltage monitor using dual comparators. IC Role / Device Role / Timing Role: Stable voltage reference defining hysteresis window via resistor network. Use Value: Low 2.0 µA reverse leakage at 3 V ensures <100 nA current error in high-Z feedback paths. |
Use Scenario: Providing bias current to a thermistor-based temperature sensor in always-on IoT nodes. IC Role / Device Role / Timing Role: Constant-current source formed with series resistor, leveraging stable VZ. Use Value: −2.7 to −0.5 mV/K tempco allows predictable drift compensation in firmware algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C5V1,115 | ±5 % tolerance, higher 480 Ω rdiff, identical package and PZSM | Acceptable where cost sensitivity outweighs regulation accuracy requirements | Select when budget constraints dominate and ±5 % voltage margin is acceptable in feedback design |
| MMSZ5222BS-7-F | ±5 % tolerance, SOD-123 package (2.7 mm × 1.4 mm), 500 mW Ptot, 500 Ω rdiff | Requires larger PCB footprint but offers higher continuous power handling | Choose when thermal derating on small boards necessitates >300 mW steady-state dissipation |
Compared with BZX585-C5V1,115, the BZX585-B5V1,115 delivers tighter voltage control critical for precision references; versus MMSZ5222BS-7-F, it sacrifices 200 mW Ptot for 45 % smaller board area-ideal for miniaturized wearables and hearing aids.
Availability
BZX585-B5V1,115 is available at Aetrix Electronics and suitable for power rail clamping, ADC reference division, comparator hysteresis, and low-power sensor biasing requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX585-B5V1,115 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 logic, discrete, and MOSFET devices with focus on efficiency, reliability, and miniaturization for consumer, industrial, and automotive markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, high-accuracy voltage regulation in space- and power-constrained applications including portable electronics and sensor interfaces.
FAQ
What is the maximum continuous forward current for BZX585-B5V1,115?
The absolute maximum forward current is 200 mA per limiting values table. However, forward conduction is not its intended operating mode; the device is designed for reverse-bias Zener regulation. Sustained forward current above 100 mA risks thermal overstress due to 1.1 V forward drop and limited thermal resistance.
Can BZX585-B5V1,115 be used in place of a 5.1 V TL431 shunt regulator?
No-it lacks the active feedback and adjustable reference architecture of the TL431. The BZX585-B5V1,115 is a passive two-terminal Zener with fixed 5.1 V breakdown; it cannot source current or regulate dynamically like the TL431, which requires external resistors and provides 2.5 V reference with programmable output.
How does the cathode band marking align with the SOD523 package outline?
The cathode band is located on the top surface adjacent to Pin 1, matching the "cathode band" label in Figure 11 of the datasheet. When viewed from above with the marking band leftmost, Pin 1 (cathode) is the left terminal and Pin 2 (anode) is the right terminal-verified by Nexperia's official SOD523 mechanical drawing.
Is BZX585-B5V1,115 suitable for automotive applications?
No-the datasheet explicitly states this part is non-automotive qualified. It is neither tested nor warranted for AEC-Q200 stress requirements, extended temperature cycling, or automotive-grade reliability. For automotive use, select Nexperia's automotive-qualified Zener series such as PZUxxB2 or BZX84-A.
BZX585-B5V1,115 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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 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-B5V1,115 FAQ
1.How can I place an order for BZX585-B5V1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B5V1,115 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-B5V1,115 reliable?
The price and inventory of BZX585-B5V1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B5V1,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B5V1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B5V1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B5V1,115?
BZX585-B5V1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B5V1,115 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-B5V1,115?
For technical support, including BZX585-B5V1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B5V1,115 requirements.
6.How does Aetrix verify that BZX585-B5V1,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B5V1,115 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-B5V1,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B5V1,115?
All BZX585-B5V1,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B5V1,115, 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-B5V1,115 part is unused and in its original packaging.
Return procedure for BZX585-B5V1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B5V1,115 Tags
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