Nexperia USA Inc. BZX585-B5V6,115
- Part No.:
- BZX585-B5V6,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B5V6,115.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD523
- Quantity:
- Payment:

- Shipping:

Inventory:62,370
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Product details
Overview
BZX585-B5V6,115 from Nexperia is a ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 5.6 V nominal regulation at 5 mA, with 300 mW total power dissipation and 40 W non-repetitive peak reverse power capability. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning, microcontroller reset circuits, and sensor biasing networks.
For engineers reviewing the BZX585-B5V6,115 datasheet, BZX585-B5V6,115 pinout, BZX585-B5V6,115 application, or BZX585-B5V6,115 equivalent, key selection criteria include its 5.6 V Zener voltage tolerance, 80 Ω typical differential resistance at 5 mA, −2.0 to +1.0 mV/K temperature coefficient, and ultra-small SOD523 footprint for space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its design targets low-current regulation (IZ = 1–5 mA), with specified reverse current ≤1.0 µA at VR = 4.0 V and ≤2.5 µA at VR = 5.0 V.
The device exhibits a negative-to-positive transition in temperature coefficient near 5.6 V, enabling improved thermal stability in mid-voltage reference designs. Its 1.1 V forward voltage at 100 mA supports use as a low-drop rectifier or ESD protection element in bidirectional configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.49 V to 5.71 V at IZ = 5 mA - defines precise clamping threshold for 5 V rail stabilization |
| Differential Resistance (rdiff) | 80 Ω typ. at IZ = 5 mA - determines output impedance and regulation error under load variation |
| Temperature Coefficient (SZ) | −2.0 to +1.0 mV/K - enables predictable drift compensation in temperature-sensitive references |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² copper - sets maximum continuous DC or low-duty-cycle pulse handling |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - supports transient surge suppression without failure |
| Reverse Current (IR) | ≤1.0 µA at VR = 4.0 V - ensures minimal leakage before breakdown onset in standby circuits |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - allows use as low-loss series diode in dual-purpose protection schemes |
Pinout & Package
The BZX585-B5V6,115 is housed in an SOD523 (SC-79) ultra-small flat-lead surface-mount plastic package measuring 1.25 mm × 0.85 mm × 0.65 mm, with cathode identified by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tight regulation without post-production trimming in 5 V reference designs |
| Low differential resistance (80 Ω typ.) | Minimizes output voltage shift under ±1 mA load changes in feedback-sensing applications |
| SOD523 ultra-small footprint | Reduces PCB area by >50 % vs. SOD323, supporting high-density portable and wearable electronics |
| Non-repetitive 40 W surge rating | Withstands ESD events per IEC 61000-4-2 Level 4 (8 kV contact / 15 kV air) without derating |
| Junction temperature range (−65 °C to +150 °C) | Supports operation in extended industrial environments including automotive under-hood zones |
Applications
| Microcontroller Reset Circuit | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Provides clean, noise-immune reset signal to ARM Cortex-M0+ MCU during power-up and brown-out conditions. IC Role / Device Role / Timing Role: Zener diode acts as voltage threshold detector in RC-based reset generator, triggering reset when VDD drops below 4.5 V. Use Value: 5.6 V rating with ±2 % tolerance ensures consistent 4.5 V trip point via resistor divider, eliminating need for dedicated reset IC. |
Use Scenario: Supplies stable 5 V reference to 12-bit SAR ADC in battery-powered environmental sensor node. IC Role / Device Role / Timing Role: Functions as shunt regulator for ADC's internal reference input, rejecting supply ripple and load transients. Use Value: 80 Ω rdiff limits reference voltage deviation to <1 LSB across 0–1 mA reference current variation, preserving measurement accuracy. |
| IoT Node Overvoltage Clamp | Low-Power Sensor Biasing |
|
Use Scenario: Protects RS-485 transceiver inputs from induced surges in smart meter communication lines. IC Role / Device Role / Timing Role: Placed between data line and ground to clamp transients above 5.6 V while remaining inactive during normal 0–5 V signaling. Use Value: 40 W non-repetitive peak power rating absorbs 100 µs surges up to ±30 V without degradation, meeting IEC 61000-4-5 requirements. |
Use Scenario: Biases photodiode amplifier in optical smoke detector with minimal quiescent current draw. IC Role / Device Role / Timing Role: Delivers stable 5.6 V bias to op-amp input stage while drawing only 5 µA leakage at 4.0 V reverse bias. Use Value: ≤1.0 µA IR at VR = 4.0 V extends battery life beyond 10 years in always-on detection mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C5V6,115 | ±5 % tolerance (5.32–5.88 V), higher rdiff (15–40 Ω), same package and PZSM | Acceptable where tighter regulation not required; lower cost for non-critical biasing | Select for cost-sensitive consumer applications where 5 % voltage margin is acceptable |
| MMSZ5232B-7-F | ±5 % tolerance, SOD-123 package (2.7 × 1.4 mm), 500 mW Ptot, 1000 W PZSM (tp = 1 ms) | Larger footprint but higher surge robustness; unsuitable for ultra-dense layouts | Choose when surge immunity >40 W is mandatory and board space permits larger package |
Compared with BZX585-C5V6,115, the BZX585-B5V6,115 delivers tighter voltage control critical for precision references; versus MMSZ5232B-7-F, it trades surge capacity for 55 % smaller PCB area and better thermal response in compact designs.
Availability
BZX585-B5V6,115 is available at Aetrix Electronics and suitable for microcontroller reset circuits, ADC reference stabilization, IoT node overvoltage clamping, and low-power sensor biasing requiring stable component supply across production lifecycles.
Supply support for BZX585-B5V6,115 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 discrete and logic devices, with leadership in advanced packaging and automotive-qualified components.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, low-power voltage regulation and transient protection in consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current this Zener can handle?
The BZX585-B5V6,115 has a maximum continuous forward current of 200 mA, but its Zener operation is specified at test currents up to 5 mA for regulation. Continuous reverse current must remain within the 300 mW power limit - at 5.6 V, this corresponds to ~53.6 mA average, though practical designs limit IZ to ≤20 mA to ensure long-term reliability and thermal stability.
Can this diode be used in series or parallel configurations?
Series connection is viable for higher voltage references (e.g., two BZX585-B5V6 units yield ~11.2 V), but matching unit-to-unit VZ tolerance is required to avoid uneven stress. Parallel use is not recommended due to negative thermal feedback and current hogging - even matched units will thermally diverge, risking failure of one device.
How does the temperature coefficient affect performance at 85 °C ambient?
At 85 °C junction temperature, the BZX585-B5V6's SZ shifts toward the +1.0 mV/K end of its range. Over a 60 °C rise from 25 °C, this adds ~60 mV drift - resulting in a VZ of ~5.66 V. This is within the ±2 % initial tolerance band and remains usable in most non-precision applications.
Is this part suitable for automotive applications?
No - the BZX585-B5V6,115 is not AEC-Q200 qualified. While its −65 °C to +150 °C junction temperature range meets some under-hood thermal requirements, it lacks automotive-specific qualification testing (e.g., vibration, humidity, lifetime HTOL). For automotive use, select Nexperia's AEC-Q200-qualified PZU series instead.
BZX585-B5V6,115 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):
- 5.6 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 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-B5V6,115 FAQ
1.How can I place an order for BZX585-B5V6,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B5V6,115 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-B5V6,115 reliable?
The price and inventory of BZX585-B5V6,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B5V6,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B5V6,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B5V6,115 transactions.
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4.How is shipping managed for BZX585-B5V6,115?
BZX585-B5V6,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B5V6,115 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-B5V6,115?
For technical support, including BZX585-B5V6,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B5V6,115 requirements.
6.How does Aetrix verify that BZX585-B5V6,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B5V6,115 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-B5V6,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B5V6,115?
All BZX585-B5V6,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B5V6,115, 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-B5V6,115 part is unused and in its original packaging.
Return procedure for BZX585-B5V6,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B5V6,115 Tags

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