Nexperia USA Inc. BZX585-B5V6,135
- Part No.:
- BZX585-B5V6,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B5V6,135.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD523
- Quantity:
- Payment:

- Shipping:

Inventory:8,375
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Product details
Overview
BZX585-B5V6,135 from Nexperia is a 5.6 V ±2 % Zener voltage regulator diode in an SOD523 (SC-79) ultra-small surface-mount package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision low-power voltage reference and overvoltage protection in space-constrained consumer and industrial power rails.
For engineers reviewing the BZX585-B5V6,135 datasheet, BZX585-B5V6,135 pinout, BZX585-B5V6,135 application, or BZX585-B5V6,135 equivalent, this device offers verified Zener voltage stability at 5.6 V with low differential resistance (80 Ω typ. at IZ = 5 mA), tight ±2 % tolerance, and thermal coefficient of −2.0 to +1.0 mV/K - critical for stable biasing in analog sensor interfaces and LDO feedback networks.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 5.6 V at 5 mA test current, exhibiting a typical differential resistance of 80 Ω and temperature coefficient between −2.0 mV/K and +1.0 mV/K. Its low 1.1 V forward voltage at 100 mA supports use as a polarity-sensitive clamp during transient events.
The device is characterized for operation from −65 °C to +150 °C junction temperature, with thermal resistance from junction to ambient of 350 K/W on FR4 PCB (35 mm² copper), and junction-to-solder-point resistance of 65 K/W - enabling reliable thermal performance in compact DC-DC converter feedback paths and microcontroller supply monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.49 V to 5.71 V at IZ = 5 mA - ensures precise 5.6 V regulation within ±2 % tolerance for stable reference generation |
| Differential Resistance (rdiff) | 80 Ω typical at IZ = 5 mA - minimizes output voltage variation under load changes in feedback or clamping applications |
| Temperature Coefficient (SZ) | −2.0 to +1.0 mV/K - enables predictable drift compensation in temperature-sensitive analog circuits |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - supports continuous low-power regulation without heatsinking in SMT layouts |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs square wave - provides robust transient surge suppression in ESD-prone signal lines |
| Reverse Current (IR) | ≤ 1.0 µA at VR = 3.0 V - ensures minimal leakage in high-impedance bias networks |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - allows effective forward conduction for bidirectional clamping configurations |
Pinout & Package
SOD523 (SC-79) plastic surface-mounted package: ultra-compact 2-pin flat-lead outline measuring 1.25 mm × 0.85 mm × 0.65 mm (L × W × H), cathode marked by a visible band on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs; marking bar identifies this pin |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for regulation or clamping function |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables accurate 5.6 V reference without post-production trimming in portable battery-monitoring circuits |
| Low 80 Ω differential resistance | Maintains regulation accuracy across ±10 % load current variation in LDO feedback divider networks |
| 40 W non-repetitive peak power rating | Withstands IEC 61000-4-2 Level 4 ESD transients (8 kV contact / 15 kV air) when placed at board-level inputs |
| SOD523 ultra-small footprint | Reduces PCB area by >50 % vs. SOD323, enabling placement adjacent to IC pins in high-density MCU power domains |
| −65 °C to +150 °C operating range | Supports deployment in automotive cabin modules and industrial PLC I/O stages without derating |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Clamping 5 V USB VBUS line against hot-plug surges and adapter overvoltage. IC Role / Device Role / Timing Role: Zener diode configured in reverse-biased shunt mode between VBUS and GND. Use Value: Limits voltage to ≤5.71 V during transients, preventing damage to USB PHY and PMIC input stages while drawing <1 µA leakage at 3 V. |
Use Scenario: Providing stable 5.6 V threshold for reset supervisor ICs monitoring 5 V system rail. IC Role / Device Role / Timing Role: Precision voltage reference element in RC-based reset timing network. Use Value: ±2 % tolerance ensures reset assertion within 4.9–5.3 V window across temperature, eliminating false resets in embedded controllers. |
| ADC Reference Buffer Biasing | Low-Power Sensor Signal Conditioning |
Use Scenario: Biasing op-amp input stage in 12-bit SAR ADC reference buffer circuit. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference source for op-amp common-mode setting. Use Value: −2.0 to +1.0 mV/K temperature coefficient minimizes offset drift, maintaining <0.5 LSB error over −40 °C to +85 °C. |
Use Scenario: Regulating excitation voltage for resistive temperature detector (RTD) bridge. IC Role / Device Role / Timing Role: Stable 5.6 V excitation source with low dynamic impedance for bridge biasing. Use Value: 80 Ω differential resistance ensures <0.1 % gain error contribution even with 100 µA bridge current variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage 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 SOD523 package | Acceptable where tighter regulation not required; higher leakage (≤3.0 µA at 3 V) | Select for cost-sensitive designs where ±5 % voltage margin is acceptable and lower unit price is prioritized |
| MMSZ5232BS-7-F | 5.6 V ±5 %, SOD-123 package (2.7 × 1.4 mm), Ptot = 500 mW, rdiff = 13 Ω typ. | Larger footprint but higher power handling; better thermal performance on standard PCBs | Choose when board layout allows larger package and higher continuous power dissipation is needed |
Compared with BZX585-C5V6,115, the BZX585-B5V6,135 delivers tighter voltage control and lower leakage for precision analog functions; versus MMSZ5232BS-7-F, it trades off power capability for 55 % smaller PCB area - making it optimal for ultra-dense portable electronics where space and accuracy outweigh raw power headroom.
Availability
BZX585-B5V6,135 is available at Aetrix Electronics and suitable for USB power protection, microcontroller reset supervision, ADC reference buffering, and low-power sensor excitation requiring stable component supply and guaranteed traceability.
Supply support for BZX585-B5V6,135 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 solutions optimized for efficiency, reliability, and miniaturization in consumer, industrial, and communications markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained voltage regulation and transient protection in high-volume portable and IoT edge devices.
FAQ
What is the maximum continuous reverse current the BZX585-B5V6,135 can sustain?
The device has no specified maximum continuous reverse current; its steady-state operation is governed by total power dissipation (300 mW). At 5.6 V Zener voltage, this limits continuous Zener current to approximately 53.6 mA (300 mW ÷ 5.6 V) at 25 °C ambient with adequate PCB copper area. Derating applies above 25 °C per the 350 K/W junction-to-ambient thermal resistance.
Can BZX585-B5V6,135 be used in series or parallel configurations?
Series connection is feasible for higher-voltage references but requires matched units to avoid current imbalance due to Zener voltage spread. Parallel use is not recommended - slight VZ mismatches cause unequal current sharing and potential thermal runaway, as the diode with lowest VZ dominates conduction.
How does the cathode marking align with the SOD523 package outline?
The cathode (pin 1) is identified by a distinct marking bar located at one end of the rectangular SOD523 body. When viewed from the top with the marking bar on the left, pin 1 (cathode) is the left-hand terminal and pin 2 (anode) is the right-hand terminal - consistent with the simplified outline in Figure 11 of the datasheet.
Is BZX585-B5V6,135 suitable for automotive applications?
No - this part is not AEC-Q200 qualified and lacks automotive-grade screening, temperature validation beyond data sheet limits, or guaranteed PPAP documentation. It is intended for commercial and industrial applications only; automotive use requires explicitly qualified alternatives such as PZM5.6B,115 or BZX84-C5V6,215 with full AEC-Q200 compliance.
BZX585-B5V6,135 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-B5V6,135 FAQ
1.How can I place an order for BZX585-B5V6,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B5V6,135 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-B5V6,135 reliable?
The price and inventory of BZX585-B5V6,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B5V6,135 is usually 5 days.
3.What payment methods are accepted for BZX585-B5V6,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B5V6,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B5V6,135?
BZX585-B5V6,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B5V6,135 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-B5V6,135?
For technical support, including BZX585-B5V6,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B5V6,135 requirements.
6.How does Aetrix verify that BZX585-B5V6,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-B5V6,135 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-B5V6,135 meets industry standards.
7.What is the process for return or replacement of BZX585-B5V6,135?
All BZX585-B5V6,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B5V6,135, 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-B5V6,135 part is unused and in its original packaging.
Return procedure for BZX585-B5V6,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B5V6,135 Tags

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