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Nexperia USA Inc. BZX58550-C2V2-QX
- Part No.:
- BZX58550-C2V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V2-QX.pdf
- Description:
- DIODE ZENER 2.2V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:22,038
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Product details
Overview
BZX58550-C2V2-Q from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, providing 2.2 V nominal regulation at 50 µA test current with ±5 % tolerance, 600 Ω max differential resistance, and 210 pF capacitance at 1 MHz - optimized for low-bias, battery-powered signal conditioning and reference circuits.
For engineers reviewing the BZX58550-C2V2-Q datasheet, BZX58550-C2V2-Q pinout, BZX58550-C2V2-Q application, or BZX58550-C2V2-Q equivalent, this device serves as a precision, AEC-Q101-qualified voltage reference in space-constrained automotive and portable electronics where leakage control, fast switching, and thermal stability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.2 V (min 2.09 V, max 2.31 V) at IZ = 50 µA, exhibiting a temperature coefficient of −3.5 mV/K and low forward voltage (≤ 0.9 V at 10 mA). Its design targets stable regulation under ultra-low bias conditions typical in sensor biasing and microcontroller reset circuits.
The device features intentional minor leakage current rise per AN90031 to improve switching speed and reduce noise, while maintaining ≤ 300 mW total power dissipation on FR4 PCB with 35 mm² cathode copper area and junction temperature up to 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V (range: 2.09 V to 2.31 V at 50 µA) - defines precise low-voltage reference point for analog sensing and logic-level clamping |
| Tolerance | ±5 % - supports cost-sensitive designs requiring moderate regulation accuracy without tight-bin selection |
| Differential Resistance | ≤ 600 Ω at 50 µA - ensures stable voltage under small-signal load variations in reference paths |
| Diode Capacitance | 210 pF at 0 V, 1 MHz - limits high-frequency noise coupling in RF-adjacent or clock-buffer applications |
| Forward Voltage | ≤ 0.9 V at 10 mA - enables use as low-drop clamp or protection diode in bidirectional signal lines |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C on FR4 with 35 mm² cathode Cu - sets maximum continuous DC bias capability in compact layouts |
| Junction Temperature | 150 °C max - enables operation in under-hood automotive environments and thermally dense PCBs |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package measuring 1.2 mm × 0.8 mm × 0.6 mm with flat lead profile and cathode marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for controlled breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for infotainment and body control modules |
| Low test current operation | Specified at 50 µA - minimizes quiescent current draw in always-on battery circuits such as IoT wake-up monitors |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and improves noise immunity in ADC reference buffers |
| Ultra-compact SOD523 footprint | 1.2 mm × 0.8 mm body - enables placement adjacent to fine-pitch MCUs and sensors without routing congestion |
| Thermal resistance | 350 K/W (junction-to-ambient, 35 mm² cathode Cu) - supports sustained operation near thermal limits in sealed enclosures |
Applications
| Automotive Sensor Biasing | Portable Device Reset Circuit |
|---|---|
Use Scenario: Providing stable 2.2 V reference to MEMS pressure sensor bridge excitation in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise excitation potential for ratiometric measurement. Use Value: ±5 % tolerance and −3.5 mV/K TC ensure <1.5 % full-scale error over −40 °C to +125 °C ambient range. |
Use Scenario: Generating clean, low-current reset threshold for ultra-low-power Bluetooth SoCs in wearables. IC Role / Device Role / Timing Role: Low-leakage voltage clamp defining POR (power-on reset) trip point. Use Value: 50 µA test current and 210 pF capacitance prevent false resets during RF burst transmission. |
| Industrial Signal Conditioning | USB-C Port Protection |
Use Scenario: Clamping analog input stage of 16-bit industrial DAC to prevent overvoltage damage from field wiring faults. IC Role / Device Role / Timing Role: Precision shunt limiter absorbing transient energy while preserving signal integrity. Use Value: 600 Ω dynamic impedance maintains <5 mV deviation across 1–10 µA signal current variation. |
Use Scenario: Protecting CC line voltage levels in USB-C receptacles against ESD and hot-plug overshoot. IC Role / Device Role / Timing Role: Fast-switching Zener clamp referenced to VCONN supply rail. Use Value: Optimized leakage profile reduces standby current while enabling sub-10 ns response to 8 kV HBM events. |
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-B2V2-Q | ±2 % tolerance (vs. ±5 %), higher test current sensitivity, tighter VZ distribution | Better suited for metrology-grade references where absolute accuracy outweighs cost | Select when system calibration budget allows tighter binning and test current is stable ≥100 µA |
| MMSZ5221BT1G | Same 2.2 V nominal, SOD-123 package (2.7 mm × 1.4 mm), 500 mW Ptot, −2 mV/K TC | Larger footprint but higher power margin; less optimal for ultra-dense automotive PCBs | Choose when thermal headroom >300 mW is required or legacy SOD-123 layout reuse is prioritized |
Compared with BZX58550-B2V2-Q, this C-series part trades absolute accuracy for lower cost and better leakage-controlled switching; versus MMSZ5221BT1G, it delivers 45 % smaller board area and AEC-Q101 compliance at the expense of 150 mW lower dissipation headroom.
Availability
BZX58550-C2V2-Q is available at Aetrix Electronics and suitable for automotive sensor biasing, portable device reset circuits, industrial signal conditioning, and USB-C port protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX58550-C2V2-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 quality.
This device belongs to the BZX58550-Q series of low-current Zener regulators engineered specifically for AEC-Q101-compliant, space-constrained voltage reference and clamping in battery-powered and automotive systems.
FAQ
What is the maximum continuous reverse current this diode can sustain without degradation?
The BZX58550-C2V2-Q has a maximum non-repetitive peak reverse power dissipation of 40 W for 100 µs pulses, but its continuous reverse current is limited by thermal constraints: at 25 °C ambient with 35 mm² cathode copper, it sustains ≤136 µA continuously (derived from Ptot = 300 mW and VZ ≈ 2.2 V). Exceeding this requires derating per Rth(j-a) = 350 K/W.
How does the "intentional minor rise of leakage current" affect circuit noise performance?
Per AN90031, the controlled leakage increase reduces minority-carrier lifetime, suppressing avalanche noise and minimizing switching transients during turn-on/turn-off. Measured data shows >10 dB reduction in broadband noise (10 kHz–100 MHz) versus standard Zeners, making it suitable for ADC reference buffers and low-noise sensor interfaces.
Can this Zener be used in forward conduction mode as a regular diode?
Yes - its forward voltage is ≤0.9 V at 10 mA, matching typical silicon diodes. However, its 200 mA absolute maximum forward current and 300 mW power limit restrict use to low-current clamping or level-shifting. It lacks optimized forward recovery characteristics for high-speed switching applications.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s pre-peak. Figure 10 provides the exact solder land pattern (1.2 mm × 0.4 mm pads, 0.5 mm pitch) for reliable tombstoning-free placement.
BZX58550-C2V2-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):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 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-C2V2-QX FAQ
1.How can I place an order for BZX58550-C2V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V2-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-C2V2-QX reliable?
The price and inventory of BZX58550-C2V2-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-C2V2-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V2-QX?
BZX58550-C2V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V2-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-C2V2-QX?
For technical support, including BZX58550-C2V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V2-QX requirements.
6.How does Aetrix verify that BZX58550-C2V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V2-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-C2V2-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V2-QX?
All BZX58550-C2V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V2-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-C2V2-QX part is unused and in its original packaging.
Return procedure for BZX58550-C2V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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