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Nexperia USA Inc. BZX58550-C5V6-QX
- Part No.:
- BZX58550-C5V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C5V6-QX.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:585
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Product details
Overview
BZX58550-C5V6-Q from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, designed for precision biasing and voltage reference in space-constrained, low-power circuits. It delivers a nominal 5.6 V regulation at 50 µA test current, with ±2 % tolerance, 400 Ω dynamic resistance at 5 mA, and −2.0 mV/K temperature coefficient - optimized for automotive sensor interfaces and portable battery-powered systems.
For engineers reviewing the BZX58550-C5V6-Q datasheet, BZX58550-C5V6-Q pinout, BZX58550-C5V6-Q application, or BZX58550-C5V6-Q equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, and automotive-grade reliability context essential for low-current voltage reference selection.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - enabling ultra-low quiescent current operation ideal for always-on monitoring circuits. Its differential resistance of 400 Ω at 5 mA and −2.0 mV/K temperature coefficient ensure stable reference performance across ambient temperatures from −55 °C to +150 °C.
The device uses silicon planar technology in an ultra-small SOD523 package with cathode-marked anisotropic leadframe, supporting reflow soldering per JEDEC J-STD-020. Thermal resistance from junction to ambient is 350 K/W on 35 mm² copper pad, enabling reliable power dissipation up to 300 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at IZ = 50 µA - precise low-current reference point for sensor biasing and microcontroller reset circuits |
| Voltage Tolerance | ±2 % - tight regulation band enabling accurate voltage clamping without external trimming |
| Differential Resistance | 400 Ω at IZ = 5 mA - low impedance ensures minimal output voltage shift under load variation |
| Temperature Coefficient | −2.0 mV/K - negative TC compensates for positive drift in associated circuitry (e.g., op-amp inputs) |
| Forward Voltage | 0.9 V at IF = 10 mA - enables use as low-drop rectifier or ESD clamp in dual-role designs |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C on 35 mm² Cu - sufficient headroom for transient overvoltage suppression in automotive ECUs |
| Junction Temperature | 150 °C maximum - supports operation in engine bay and under-hood environments per AEC-Q101 |
Pinout & Package
SOD523 (SC-79) plastic surface-mounted package: 1.2 mm × 0.8 mm × 0.6 mm body, ultra-flat profile with cathode band marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marked by bar on package top - reverse-biased during Zener operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail - completes bias path for controlled breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Low test current operation | Specified at 50 µA - minimizes standby power draw in battery-backed real-time clocks and IoT wake-up circuits |
| Optimized leakage behavior | Intentional minor IR rise improves switching speed and reduces noise in feedback loops of LDOs and comparators |
| Ultra-small footprint | SOD523 package saves >60 % board area vs. SOD323 - critical for wearables and compact automotive modules |
| Thermal robustness | Rth(j-a) = 350 K/W on 35 mm² Cu - enables stable regulation without heatsinking in sealed enclosures |
Applications
| Automotive Sensor Biasing | Portable Device Power Monitoring |
|---|---|
Use Scenario: Providing stable 5.6 V reference for analog front-end of pressure and temperature sensors in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference establishing precision bias point for sensor Wheatstone bridge excitation and ADC input scaling. Use Value: Tight ±2 % tolerance and −2.0 mV/K TC maintain <0.5 % total error over −40 °C to +125 °C operating range. |
Use Scenario: Monitoring battery voltage in Bluetooth earbuds using microcontroller ADC with internal reference. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator generating stable 5.6 V reference for ADC calibration and brown-out detection. Use Value: 50 µA test current enables operation from coin-cell batteries for >1 year without measurable discharge impact. |
| Industrial PLC Input Protection | Medical Wearable Signal Conditioning |
Use Scenario: Clamping 24 V field input signals to safe levels before isolation amplifiers in programmable logic controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor and DC level shifter limiting input swing to 5.6 V while sinking fault current. Use Value: 300 mW power rating handles 100 ms overvoltage events; SOD523 footprint allows dense channel spacing on DIN-rail modules. |
Use Scenario: Setting reference voltage for instrumentation amplifier gain stage in ECG patch devices. IC Role / Device Role / Timing Role: Precision voltage reference stabilizing gain-setting resistors against temperature drift in biopotential signal chains. Use Value: −2.0 mV/K TC offsets positive TC of thin-film resistors, reducing system-level offset drift to <2 µV/°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-B5V6-Q | Same 5.6 V nominal voltage but ±5 % tolerance (vs. ±2 %); higher rdiff = 500 Ω at 5 mA | Acceptable where cost sensitivity outweighs precision requirements - e.g., non-critical power rail monitoring | Select when tighter regulation is unnecessary and BOM cost reduction is prioritized over reference accuracy. |
| MMSZ5232B-TP | 5.6 V Zener, ±5 % tolerance, SOD-123 package (2.7 mm × 1.4 mm), Ptot = 500 mW, rdiff = 13 Ω at 20 mA | Higher power handling and lower dynamic resistance suit higher-current references but requires 3× PCB area | Choose only if >10 mA reference current is needed and board space permits larger SOD-123 footprint. |
Compared with BZX58550-B5V6-Q, the C5V6-Q offers superior accuracy and lower impedance for precision analog functions; versus MMSZ5232B-TP, it trades off power capacity and dynamic resistance for 70 % smaller footprint and automotive qualification.
Availability
BZX58550-C5V6-Q is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable medical monitors, industrial PLC input stages, and battery-powered IoT edge nodes requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX58550-C5V6-Q 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 automotive-qualified components and energy-efficient technologies.
The BZX58550-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current voltage reference and biasing in harsh-environment automotive and industrial electronics.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-C5V6-Q at 85 °C ambient?
At Tamb = 85 °C, derated power dissipation is 210 mW, calculated using the 300 mW rating at 25 °C and thermal resistance Rth(j-a) = 350 K/W. This ensures junction temperature remains below 150 °C with 100 °C temperature margin, validated per IEC 60134 limiting values.
Can BZX58550-C5V6-Q be used in forward conduction mode?
Yes - its forward voltage is specified at 0.9 V @ 10 mA, making it suitable as a low-drop series diode or ESD protection element in bidirectional signal paths. However, forward operation is not its primary function; Zener regulation occurs only in reverse bias above 5.6 V.
How does the "intentional minor rise of leakage current" benefit circuit design?
This controlled increase in reverse leakage (per AN90031) reduces minority-carrier lifetime, accelerating turn-off in switching applications and lowering high-frequency noise coupling into sensitive analog nodes - particularly valuable in feedback paths of DC-DC converters and precision amplifiers.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes - the SOD523 package is qualified for JEDEC J-STD-020 Class 3 moisture sensitivity level and supports peak reflow temperatures up to 260 °C. Recommended solder land pattern matches Figure 10 in the datasheet, with 0.5 mm pad width and 0.4 mm solder mask opening.
BZX58550-C5V6-QX 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:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX58550-C5V6-QX FAQ
1.How can I place an order for BZX58550-C5V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C5V6-QX 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 BZX58550-C5V6-QX reliable?
The price and inventory of BZX58550-C5V6-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C5V6-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-C5V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C5V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C5V6-QX?
BZX58550-C5V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C5V6-QX 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 BZX58550-C5V6-QX?
For technical support, including BZX58550-C5V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C5V6-QX requirements.
6.How does Aetrix verify that BZX58550-C5V6-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-C5V6-QX 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 BZX58550-C5V6-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-C5V6-QX?
All BZX58550-C5V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C5V6-QX, 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 BZX58550-C5V6-QX part is unused and in its original packaging.
Return procedure for BZX58550-C5V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C5V6-QX 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
Diodes Incorporated
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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
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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