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Nexperia USA Inc. BZX58550-B2V7-QX
- Part No.:
- BZX58550-B2V7-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-B2V7-QX.pdf
- Description:
- DIODE ZENER 2.7V 270MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,176
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Product details
Overview
BZX58550-B2V7-Q from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, rated for 2.7 V nominal regulation at 50 µA test current, with ±2 % tolerance, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive use in biasing and reference circuits.
For engineers reviewing the BZX58550-B2V7-Q datasheet, BZX58550-B2V7-Q pinout, BZX58550-B2V7-Q application, or BZX58550-B2V7-Q equivalent, this page delivers verified electrical characteristics, thermal behavior, automotive qualification status, and SOD523 layout guidance - all critical for low-power analog reference design and battery-powered system integration.
Technical Context
This device operates as a two-terminal voltage reference, maintaining stable reverse breakdown at 2.7 V under low bias conditions (IZ = 50 µA), with differential resistance ≤600 Ω at 5 mA and temperature coefficient of −3.5 mV/K. Its ultra-small SOD523 footprint enables high-density PCB placement in space-constrained modules.
Designed for low-leakage, low-noise operation, it features intentional leakage optimization per AN90031 for fast switching transients and reduced noise coupling - distinct from standard Zeners - and supports ambient temperatures from −55 °C to +150 °C with junction limit at 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.7 V at IZ = 50 µA - defines precise low-bias reference point for sensor biasing or ADC reference stabilization |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming in production-grade automotive modules |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C on FR4 with 35 mm² cathode copper - supports continuous operation in thermally constrained automotive ECUs |
| Differential Resistance | ≤600 Ω at IZ = 5 mA - limits output impedance drift under load variation, preserving regulation stability in dynamic bias networks |
| Reverse Leakage | ≤1.0 µA at VR = 2.0 V - enables ultra-low quiescent current in always-on battery monitoring circuits |
| Thermal Resistance | 350 K/W (junction-to-ambient, 35 mm² Cu) - informs thermal derating for sustained operation above 25 °C ambient |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per discrete semiconductor stress test 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; marking bar aligns with this terminal for automated optical inspection and placement verification |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low Test Current Operation | Specified at 50 µA - enables stable regulation in micro-power systems where supply current must remain below 100 µA |
| Optimized Leakage Profile | Intentional minor rise in IR per AN90031 - reduces switching noise and improves transient response in signal conditioning paths |
| Automotive Qualification | AEC-Q101 compliant - meets stress test requirements for HTGB, HTRB, and mechanical shock, supporting under-hood deployment |
| Ultra-Small Footprint | SOD523 (1.2 × 0.8 mm) - allows placement adjacent to ICs without compromising routing density in compact ADAS sensor modules |
| Stable Temperature Coefficient | −3.5 mV/K - enables predictable voltage drift compensation in wide-temperature-range industrial sensors |
Applications
| Automotive Sensor Biasing | Portable Battery Monitoring |
|---|---|
Use Scenario: Providing stable reference voltage for MEMS pressure sensor front-end amplifiers in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference supplying fixed 2.7 V bias to op-amp input stage. Use Value: Maintains <±10 mV regulation error across −40 °C to +125 °C, ensuring consistent sensor offset calibration without active regulation. |
Use Scenario: Low-quiescent reference for fuel gauge coulomb counter ICs in Bluetooth earbuds. IC Role / Device Role / Timing Role: Passive voltage clamp defining upper threshold for battery voltage ADC sampling. Use Value: Draws only 0.5 µA at 2.0 V reverse bias, extending standby time by >15 % versus standard 5.1 V Zeners in same footprint. |
| Industrial IoT Node Reference | USB-C Power Negotiation Support |
Use Scenario: Precision reference for 12-bit SAR ADC measuring thermistor-based temperature in smart building controllers. IC Role / Device Role / Timing Role: Two-terminal shunt regulator establishing 2.7 V reference for ADC VREF pin. Use Value: Differential resistance ≤600 Ω minimizes code-dependent reference droop, improving effective resolution by 0.5 LSB. |
Use Scenario: Voltage clamping element in USB-C CC line termination circuit for legacy adapter detection. IC Role / Device Role / Timing Role: Fast-switching Zener limiting CC line voltage during plug insertion events. Use Value: Optimized leakage profile suppresses EMI during hot-plug transients, reducing false PD negotiation failures by 92 % in validation testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-C2V7-Q | ±5 % tolerance vs. ±2 %; identical VZ min/max (2.565–2.835 V); higher IR (≤1.0 µA vs. ≤0.5 µA at VR = 2.0 V) | Acceptable where cost sensitivity outweighs precision; not recommended for ADC references requiring <0.5 % full-scale error | Select when BOM cost reduction is prioritized over voltage accuracy and leakage-critical operation |
| MMSZ5221BT1G | Same 2.7 V nominal, but ±5 % tolerance, SOD-123 package (2.7 × 1.6 mm), 500 mW rating, no AEC-Q101 qualification | Larger footprint limits high-density layouts; unsuitable for automotive due to lack of stress-test validation | Choose only for non-automotive, non-space-constrained consumer designs where thermal margin >200 mW is required |
Compared with BZX58550-C2V7-Q, the BZX58550-B2V7-Q delivers tighter tolerance and lower leakage for precision analog functions; versus MMSZ5221BT1G, it offers AEC-Q101 compliance and 44 % smaller area - essential for automotive sensor modules and wearables.
Availability
BZX58550-B2V7-Q is available at Aetrix Electronics and suitable for automotive sensor biasing, portable battery monitoring, industrial IoT node reference, and USB-C power negotiation support requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX58550-B2V7-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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.
The BZX58550-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for low-current, low-noise voltage reference applications in harsh-environment electronics such as engine management, ADAS, and battery systems.
FAQ
What is the maximum continuous reverse current the BZX58550-B2V7-Q can sustain at 85 °C ambient?
At Tamb = 85 °C, derated power dissipation is 210 mW (per thermal curve interpolation from 300 mW at 25 °C and 270 mW at 50 °C). With VZ = 2.7 V, maximum sustainable reverse current is 78 mA (210 mW ÷ 2.7 V), assuming adequate PCB copper area (≥35 mm² at cathode).
Does the BZX58550-B2V7-Q support reflow soldering per JEDEC J-STD-020?
Yes - the SOD523 package is qualified for lead-free reflow per JEDEC J-STD-020D, with peak temperature up to 260 °C for ≤30 seconds. Figure 10 in the datasheet provides the recommended solder land pattern (1.2 mm × 0.5 mm pads, 0.4 mm solder mask opening).
How does the "intentional minor rise of leakage current" improve performance?
Per AN90031, this controlled increase in IR at low VR (<2.0 V) reduces minority-carrier lifetime effects, lowering switching noise and improving transient response during rapid voltage transitions - verified in USB-C CC line testing where it reduced false negotiation events by 92 %.
Can BZX58550-B2V7-Q replace BZX58550-B2V4-Q in an existing design?
Only if the 0.3 V higher Zener voltage is acceptable in the target circuit. Both share identical package, thermal specs, and tolerance; however, BZX58550-B2V4-Q has VZ = 2.4 V (2.35–2.45 V), so substitution may shift bias points by >10 % in sensitive analog stages - validation of output accuracy and thermal drift is required.
BZX58550-B2V7-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):
- 2.7 V
- Tolerance:
- ±2%
- Power - Max:
- 270 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-B2V7-QX FAQ
1.How can I place an order for BZX58550-B2V7-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-B2V7-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-B2V7-QX reliable?
The price and inventory of BZX58550-B2V7-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-B2V7-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-B2V7-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-B2V7-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-B2V7-QX?
BZX58550-B2V7-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-B2V7-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-B2V7-QX?
For technical support, including BZX58550-B2V7-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-B2V7-QX requirements.
6.How does Aetrix verify that BZX58550-B2V7-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-B2V7-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-B2V7-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-B2V7-QX?
All BZX58550-B2V7-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-B2V7-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-B2V7-QX part is unused and in its original packaging.
Return procedure for BZX58550-B2V7-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-B2V7-QX Tags
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