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Nexperia USA Inc. BZX58550-B6V2-QX
- Part No.:
- BZX58550-B6V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-B6V2-QX.pdf
- Description:
- DIODE ZENER 6.2V 270MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,799
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Product details
Overview
BZX58550-B6V2-QX 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, battery-powered systems. It delivers a nominal 6.2 V regulation at 50 µA test current, with ±2 % tolerance, 160 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX58550-B6V2-QX datasheet, BZX58550-B6V2-QX pinout, BZX58550-B6V2-QX application, or BZX58550-B6V2-QX equivalent, key selection criteria include low-leakage operation at microamp bias, thermal stability in ultra-small SMD layouts, automotive-grade reliability, and compatibility with FR4 PCBs using standard 35 mm² cathode copper area.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 6.08 V to 6.32 V at IZ = 50 µA, exhibiting a positive temperature coefficient of +0.4 mV/K and diode capacitance of 110 pF at 0 V. Its low 50 µA test current enables stable regulation in ultra-low-power sensor bias networks and standby voltage references.
The device features intentional leakage optimization per AN90031 for fast switching transients and noise reduction, and achieves 300 mW total power dissipation on FR4 PCB with 35 mm² cathode copper area - critical for thermally isolated analog subcircuits in automotive ECUs and portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V at IZ = 50 µA - defines precise reference point for low-bias analog circuits |
| Voltage Tolerance | ±2 % - ensures tight regulation without post-calibration in production |
| Differential Resistance | 160 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Forward Voltage | 0.9 V at IF = 10 mA - limits forward conduction loss during transient polarity reversal |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C with 35 mm² cathode Cu - sets maximum continuous bias power on standard PCB |
| Junction Temperature | 150 °C max - enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing per AEC standard |
Pinout & Package
Package: SOD523 (SC-79), plastic surface-mounted, 2-lead, 1.2 mm × 0.8 mm × 0.6 mm body. Cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse breakdown current; marked side on package |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low test current | 50 µA - enables stable regulation in micropower sensor bias rails and battery-monitoring references |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching noise and improves transient response in feedback paths |
| Automotive qualification | AEC-Q101 compliant - supports deployment in engine control, ADAS, and body electronics without additional qualification |
| Thermal performance | Rth(j-a) = 350 K/W with 35 mm² cathode Cu - allows predictable derating in compact PCB layouts |
| Small-footprint packaging | SOD523 (1.2 × 0.8 mm) - fits high-density routing in wearables, smart sensors, and automotive modules |
Applications
| Automotive Sensor Biasing | Portable Instrument Reference |
|---|---|
Use Scenario: Providing stable 6.2 V reference for MEMS pressure sensor signal conditioning in engine manifold modules. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precision bias point for op-amp input stages and ADC reference dividers. Use Value: ±2 % tolerance and +0.4 mV/K TC ensure <±15 mV drift over −40 °C to +125 °C, meeting ASIL-B sensor accuracy requirements. |
Use Scenario: Generating low-power reference voltage for handheld multimeter front-end amplifiers powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-current Zener regulator supplying fixed bias to JFET-input op-amps in analog measurement paths. Use Value: 50 µA test current draws <1 µA quiescent current in sleep mode, extending battery life beyond 12 months. |
| IoT Node Voltage Clamp | Industrial Signal Conditioning |
Use Scenario: Clamping 3.3 V logic supply against ESD transients in LoRaWAN end-node radios operating in harsh RF environments. IC Role / Device Role / Timing Role: Fast-switching Zener clamp protecting MCU GPIO and transceiver I/O pins from overvoltage events. Use Value: Optimized leakage profile per AN90031 minimizes RF-induced noise coupling into sensitive RX paths. |
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop-powered temperature transmitters in factory automation cabinets. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant 6.2 V across current-sense resistor and op-amp feedback network. Use Value: 160 Ω dynamic impedance ensures <0.1 % line regulation error over 10–30 V loop supply range. |
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-C6V2-Q | ±5 % tolerance, higher leakage at low bias, same SOD523 package | Acceptable where cost-sensitive designs tolerate wider voltage spread and relaxed noise targets | Select when tighter regulation is unnecessary and bill-of-materials cost reduction is prioritized |
| MMSZ5234B-7-F | 6.2 V ±5 %, 500 mW Ptot, SOD-123 package (2.7 × 1.4 mm) | Higher power handling but 3.4× larger footprint; not AEC-Q101 qualified | Choose only if thermal margin exceeds 300 mW requirement and automotive qualification is not required |
Compared with BZX58550-C6V2-Q, the BZX58550-B6V2-QX offers tighter regulation and lower noise for precision analog use; versus MMSZ5234B-7-F, it provides AEC-Q101 compliance and 40 % smaller board area at the cost of reduced power headroom.
Availability
BZX58550-B6V2-QX is available at Aetrix Electronics and suitable for automotive sensor biasing, portable instrument reference, IoT node voltage clamping, and industrial signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX58550-B6V2-QX 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX58550-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, high-stability voltage reference and regulation in space-constrained, thermally demanding automotive and portable electronics.
FAQ
What is the maximum reverse current at 6.2 V before breakdown onset?
At 6.2 V reverse bias and Tj = 25 °C, the typical reverse current is 5.0 µA - well below the 50 µA test current that defines nominal Zener voltage. This low leakage ensures minimal parasitic loading in high-impedance reference nodes.
Can BZX58550-B6V2-QX be used in series with another Zener for higher voltage reference?
Yes, but thermal coupling and mismatched temperature coefficients will degrade overall stability. The +0.4 mV/K TC means two units in series yield ~0.8 mV/K drift; for >12 V references, consider dedicated high-voltage Zeners or bandgap-based solutions instead.
Is the SOD523 package compatible with standard reflow profiles for lead-free soldering?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended peak temperature is 260 °C for ≤ 30 seconds, with preheat ramp rate ≤ 3 °C/s and cooling rate ≥ 1 °C/s, matching standard Class 3 assembly processes.
How does the "intentional minor rise of leakage current" improve noise performance?
Per AN90031, this controlled leakage reduces carrier trapping/detrapping effects at the junction, lowering 1/f noise and improving transient response during rapid voltage changes - particularly beneficial in feedback loops of precision regulators and sensor interfaces.
BZX58550-B6V2-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX58550-Q
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±2%
- Power - Max:
- 270 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-B6V2-QX FAQ
1.How can I place an order for BZX58550-B6V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-B6V2-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-B6V2-QX reliable?
The price and inventory of BZX58550-B6V2-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-B6V2-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-B6V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-B6V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-B6V2-QX?
BZX58550-B6V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-B6V2-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-B6V2-QX?
For technical support, including BZX58550-B6V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-B6V2-QX requirements.
6.How does Aetrix verify that BZX58550-B6V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-B6V2-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-B6V2-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-B6V2-QX?
All BZX58550-B6V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-B6V2-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-B6V2-QX part is unused and in its original packaging.
Return procedure for BZX58550-B6V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-B6V2-QX Tags
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MM5Z5V1ST1G
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