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Nexperia USA Inc. BZX58550-C6V2-QX
- Part No.:
- BZX58550-C6V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C6V2-QX.pdf
- Description:
- DIODE ZENER 6.2V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,860
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Product details
Overview
BZX58550-C6V2-Q from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, providing 6.2 V nominal regulation at 50 µA test current with ±5 % tolerance, 160 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX58550-C6V2-Q datasheet, BZX58550-C6V2-Q pinout, BZX58550-C6V2-Q application, or BZX58550-C6V2-Q equivalent, this device serves as a precision, low-bias voltage reference in battery-powered sensor nodes, ECU power-rail monitoring, and automotive infotainment standby regulators where leakage-sensitive, ultra-small footprint regulation is required.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - enabling stable reference generation under ultra-low quiescent current conditions. Its intentional minor leakage rise (per AN90031) improves switching speed and reduces noise in dynamic bias networks.
Thermal performance is defined across three mounting configurations: Rth(j-a) = 460 K/W (standard FR4), 350 K/W (35 mm² cathode copper), and 285 K/W (1 cm² cathode pad), supporting design-in flexibility for thermal-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V at IZ = 50 µA - defines primary regulation point for low-power reference circuits |
| Tolerance | ±5 % - supports cost-optimized designs where tighter tolerance is not required |
| Differential Resistance | 160 Ω at IZ = 5 mA - indicates moderate regulation stiffness suitable for non-critical biasing |
| Forward Voltage | 0.9 V at IF = 10 mA - enables predictable forward conduction in protection or clamping roles |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C with 35 mm² cathode copper - sets safe continuous operating limit under typical layout conditions |
| Junction Temperature Limit | 150 °C - defines maximum allowable die temperature for sustained reliability in automotive under-hood environments |
| AEC-Q101 Qualified | Yes - confirms suitability for automotive electronics per stress-test qualification standard for discrete semiconductors |
Pinout & Package
SOD523 (SC-79) plastic surface-mounted package: 2-pin, 1.2 mm × 0.8 mm × 0.6 mm body, ultra-small footprint optimized for space-constrained PCBs. Cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines reverse-bias orientation for Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in microamp-level bias networks without loading sensitive sources |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and high-frequency noise in dynamic regulation paths |
| Automotive qualification | AEC-Q101 compliant - validated for temperature cycling, HTRB, and mechanical shock per automotive reliability requirements |
| Ultra-compact packaging | SOD523 footprint (1.2 × 0.8 mm) - saves >60 % board area vs. SOD323, critical for multi-rail compact modules |
| Thermal derating clarity | Three Rth(j-a) values provided - allows accurate junction temperature estimation across common PCB copper configurations |
Applications
| Automotive ECU Power Monitoring | Portable Gas Sensor Biasing |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control unit during start-stop cycles to detect undervoltage events. IC Role / Device Role / Timing Role: Zener shunt regulator providing stable 6.2 V reference for ADC input scaling and comparator threshold setting. Use Value: ±5 % tolerance and 50 µA test current ensure minimal load on weak battery states while maintaining detection accuracy across −40 °C to +125 °C. |
Use Scenario: Supplying precise bias voltage to electrochemical gas sensor electrodes in handheld air quality monitors. IC Role / Device Role / Timing Role: Low-current voltage reference establishing sensor excitation potential with minimal self-heating impact. Use Value: 160 Ω rdiff and AEC-Q101 qualification guarantee stable output despite ambient temperature swings and long-term drift in field-deployed units. |
| Infotainment System Standby Regulator | Industrial IoT Node Voltage Clamp |
Use Scenario: Maintaining always-on 3.3 V logic supply from vehicle battery during ignition-off periods using low-quiescent LDO pre-regulation. IC Role / Device Role / Timing Role: Secondary Zener clamp protecting LDO enable pin against transient overvoltage during load dump events. Use Value: 40 W non-repetitive peak power rating (tp = 100 µs) absorbs ISO 7637-2 pulse 5a surges without failure. |
Use Scenario: Clamping analog front-end inputs of wireless sensor nodes exposed to ESD and induced transients in factory automation settings. IC Role / Device Role / Timing Role: Fast-switching Zener acting as low-leakage overvoltage protector for 16-bit SAR ADC reference inputs. Use Value: Optimized leakage profile minimizes DC error contribution while enabling sub-10 ns response to fast transients per AN90031. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-B6V2-Q | ±2 % tolerance, lower rdiff (110 Ω), higher test current sensitivity | Better regulation accuracy required in precision analog signal chains | Select when tighter voltage stability outweighs cost premium and higher minimum bias current |
| MMSZ5234B-7-F | Same 6.2 V nominal, ±5 %, but SOD123 package (2.7 × 1.6 mm), 500 mW Ptot | Higher power handling needed in industrial power supplies with larger thermal mass | Choose when board space allows larger footprint and higher dissipation margin is mandatory |
Compared with BZX58550-C6V2-Q, the B6V2-Q offers superior voltage accuracy at the expense of increased bias current demand, while MMSZ5234B-7-F trades miniaturization for robustness in thermally demanding environments - making the C6V2-Q optimal for space- and current-constrained automotive edge nodes.
Availability
BZX58550-C6V2-Q is available at Aetrix Electronics and suitable for automotive ECU monitoring, portable sensor biasing, and industrial IoT voltage clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX58550-C6V2-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade reliability.
The BZX58550-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for low-current, high-stability voltage reference and clamping in space-constrained automotive and portable electronics.
FAQ
What is the maximum reverse current at 6.2 V for BZX58550-C6V2-Q?
At VR = 6.2 V and Tj = 25 °C, the typical reverse current is 5.0 µA, with a maximum of 10 µA per Table 8. This low leakage ensures minimal loading in battery-critical applications and supports accurate low-current sensing circuits without introducing significant offset error.
Can BZX58550-C6V2-Q be used in place of a 6.2 V Zener with ±2 % tolerance?
No - the "C" suffix denotes ±5 % tolerance, whereas ±2 % is indicated by the "B" suffix (e.g., BZX58550-B6V2-Q). Substituting the C-version in a design relying on tight regulation will introduce up to ±3 % additional voltage uncertainty at the reference node, potentially affecting ADC accuracy or comparator hysteresis margins.
How does the SOD523 package affect thermal performance compared to SOD323?
The SOD523 package has higher thermal resistance: Rth(j-a) = 460 K/W (standard FR4) versus ~300 K/W for SOD323. This means for the same 300 mW dissipation, junction temperature rise is ~138 °C higher in SOD523 - requiring careful copper area allocation (≥35 mm² at cathode) to maintain safe Tj < 150 °C in continuous operation.
Is BZX58550-C6V2-Q suitable for ESD protection in USB data lines?
No - it is not designed or characterized for ESD clamping. Its 40 W non-repetitive surge rating applies only to low-duty-cycle transients (tp = 100 µs), not the 15 kV HBM or 8 kV IEC 61000-4-2 pulses required for USB interface protection. Dedicated TVS diodes like PESD5V0S1BA should be used instead.
BZX58550-C6V2-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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-C6V2-QX FAQ
1.How can I place an order for BZX58550-C6V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C6V2-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-C6V2-QX reliable?
The price and inventory of BZX58550-C6V2-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-C6V2-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-C6V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C6V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C6V2-QX?
BZX58550-C6V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C6V2-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-C6V2-QX?
For technical support, including BZX58550-C6V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C6V2-QX requirements.
6.How does Aetrix verify that BZX58550-C6V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-C6V2-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-C6V2-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-C6V2-QX?
All BZX58550-C6V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C6V2-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-C6V2-QX part is unused and in its original packaging.
Return procedure for BZX58550-C6V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C6V2-QX Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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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
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