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Nexperia USA Inc. BZX58550-C2V7-QX
- Part No.:
- BZX58550-C2V7-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V7-QX.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,957
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Product details
Overview
BZX58550-C2V7-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, battery-powered systems. It delivers a nominal 2.7 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω dynamic impedance at 5 mA, and 1.0 µA reverse leakage at VR = 2.0 V - enabling stable operation in automotive sensor interfaces and portable IoT power rails.
For engineers reviewing the BZX58550-C2V7-Q datasheet, BZX58550-C2V7-Q pinout, BZX58550-C2V7-Q application, or BZX58550-C2V7-Q equivalent, this page provides verified electrical characteristics, AEC-Q101 qualification status, thermal resistance data, and automotive-grade packaging details essential for low-power analog design and BOM validation.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output by conducting reverse current above its specified Zener voltage (2.565 V to 2.835 V). Its low 50 µA test current enables minimal quiescent draw in always-on circuits, while the intentional minor leakage rise in the 'C' series improves switching speed and noise immunity per AN90031.
Thermally, it features Rth(j-a) = 460 K/W on standard FR4 and 285 K/W with 1 cm² cathode copper area, supporting reliable operation up to 150 °C junction temperature. The SOD523 package's 1.2 mm × 0.8 mm footprint ensures compatibility with high-density PCB layouts in automotive ECUs and wearables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.565 V to 2.835 V at IZ = 50 µA - tight ±2 % tolerance enables accurate low-current reference without trimming. |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 5 mA - defines regulation stiffness under small-signal load variation. |
| Reverse Leakage (IR) | 1.0 µA max at VR = 2.0 V - ensures ultra-low standby current in battery-critical applications. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports use as low-drop rectifier or clamp in dual-role designs. |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C with 35 mm² cathode copper - sets practical continuous operating limit in thermally constrained layouts. |
| Temperature Coefficient (SZ) | −3.5 mV/K - predictable negative drift allows compensation in temperature-sensitive references. |
| Junction Temperature (Tj) | 150 °C max - enables deployment in under-hood automotive environments per AEC-Q101 stress testing. |
Pinout & Package
SOD523 (SC-79) plastic surface-mounted package: 1.2 mm × 0.8 mm × 0.6 mm body, ultra-small flat lead outline with cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marked by bar on package - reverse-biased terminal where Zener breakdown occurs. |
| 2 (A) | Anode | Connected to ground or lower-potential rail - completes shunt regulation path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Stress-tested for automotive discrete semiconductors - validated for engine control, ADAS sensors, and infotainment power domains. |
| Low 50 µA test current | Enables stable regulation in micro-power systems (e.g., coin-cell IoT nodes) without compromising accuracy. |
| ±2 % voltage tolerance | Eliminates need for external trimming in precision voltage references for ADC biasing and comparator thresholds. |
| Optimized leakage profile | Intentional minor IR rise (per AN90031) reduces switching transients and broadband noise in fast-response circuits. |
| Ultra-compact SOD523 | 0.96 mm² board area - fits within 0402 footprint constraints while delivering higher power rating than standard 0402 Zeners. |
Applications
| Automotive Cabin Sensors | Portable Medical Wearables |
|---|---|
Use Scenario: Voltage reference for MEMS pressure sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Shunt regulator providing stable 2.7 V bias to op-amp input stage and ADC reference divider. Use Value: ±2 % VZ tolerance ensures <1 LSB error across 12-bit sensor readout; AEC-Q101 rating guarantees operation at 105 °C ambient. |
Use Scenario: Low-quiescent voltage clamp for ECG front-end amplifier power rails in Bluetooth-enabled patches. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting supply excursions during RF burst transmission. Use Value: 1.0 µA leakage at 2.0 V preserves >5-year battery life; SOD523 size enables integration beneath flex PCB overlays. |
| Industrial Smart Transmitters | Consumer Audio DAC Biasing |
Use Scenario: Precision bias generation for 4–20 mA loop transmitter ICs in hazardous-area field devices. IC Role / Device Role / Timing Role: Two-terminal shunt regulator establishing clean 2.7 V reference for current-sense amplifier offset nulling. Use Value: −3.5 mV/K tempco allows predictable drift compensation; 300 mW Ptot handles transient overloads without derating. |
Use Scenario: Reference voltage source for headphone amplifier DC offset cancellation circuitry. IC Role / Device Role / Timing Role: Zener diode supplying stable bias to differential pair tail current sources. Use Value: 600 Ω rdiff minimizes AC impedance modulation; 0.9 V VF supports dual-use as forward clamp during pop/click suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-B2V7-Q | Same VZ range (2.65–2.75 V) but ±5 % tolerance and lower leakage (0.8 µA at 2.0 V). | Better for cost-sensitive non-automotive applications where tighter tolerance isn't required. | Select when AEC-Q101 qualification is unnecessary and leakage must be minimized below 1 µA. |
| MMSZ4678T1G | 2.7 V nominal, ±5 %, 350 mW Ptot, SOD-123 package (2.7 mm × 1.6 mm). | Larger footprint; higher power rating but no AEC-Q101 certification. | Choose only if board layout permits larger package and automotive qualification is not mandated. |
Compared with BZX58550-C2V7-Q, the BZX58550-B2V7-Q offers lower leakage but sacrifices automotive qualification and tighter tolerance, while MMSZ4678T1G trades package miniaturization and AEC compliance for higher power handling - making the C-series part uniquely suited for space- and reliability-critical automotive edge nodes.
Availability
BZX58550-C2V7-Q is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical wearables, industrial smart transmitters, and consumer audio DAC biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX58550-C2V7-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 leading global semiconductor manufacturer specializing in high-performance, high-reliability discrete and logic devices, with core expertise in automotive-qualified components and energy-efficient solutions.
The BZX58550-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current voltage regulation in automotive electronics, portable instrumentation, and battery-constrained IoT endpoints.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-C2V7-Q at 70 °C ambient?
At 70 °C ambient, derating applies per the thermal resistance curve: Rth(j-a) = 460 K/W on standard FR4 yields ~175 mW usable Ptot. With 35 mm² cathode copper (Rth(j-a) = 350 K/W), it supports ~225 mW. Full 300 mW is only valid at ≤25 °C ambient with specified copper area.
Does BZX58550-C2V7-Q support bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. Its forward conduction (VF ≤ 0.9 V at 10 mA) is incidental; it lacks symmetric clamping behavior or IEC 61000-4-2 rating required for dedicated ESD protection.
How does the 'C' series differ electrically from the 'B' series in the BZX58550-Q family?
The 'C' series features ±2 % VZ tolerance versus ±5 % for 'B', and intentionally elevated leakage current (e.g., 1.0 µA vs. 0.8 µA at VR = 2.0 V) to improve switching speed and reduce noise per application note AN90031 - critical for dynamic biasing in sensor interfaces.
Can BZX58550-C2V7-Q be used in place of a 2.7 V LDO for ultra-low-current applications?
Yes - as a shunt regulator, it replaces LDOs where load current is <100 µA and dropout isn't required. Its 50 µA test current and 1.0 µA leakage make it viable for micropower biasing, though it lacks current-limiting or enable functionality inherent to LDOs.
BZX58550-C2V7-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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1 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-C2V7-QX FAQ
1.How can I place an order for BZX58550-C2V7-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V7-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-C2V7-QX reliable?
The price and inventory of BZX58550-C2V7-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-C2V7-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V7-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V7-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V7-QX?
BZX58550-C2V7-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V7-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-C2V7-QX?
For technical support, including BZX58550-C2V7-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V7-QX requirements.
6.How does Aetrix verify that BZX58550-C2V7-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V7-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-C2V7-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V7-QX?
All BZX58550-C2V7-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V7-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-C2V7-QX part is unused and in its original packaging.
Return procedure for BZX58550-C2V7-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C2V7-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
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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