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Nexperia USA Inc. BZX58550-B8V2X
- Part No.:
- BZX58550-B8V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-B8V2X.pdf
- Description:
- DIODE ZENER 8.2V 270MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,049
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Product details
Overview
BZX58550-B8V2X from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 8.2 V regulation at 50 µA test current, with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and 6.2 mV/K temperature coefficient - enabling stable operation in portable battery-powered sensors and IoT node power rails.
For engineers reviewing the BZX58550-B8V2X datasheet, BZX58550-B8V2X pinout, BZX58550-B8V2X application, or BZX58550-B8V2X equivalent, key selection criteria include its 50 µA regulation point, ultra-small SOD523 footprint, low leakage optimization per AN90031, and thermal resistance of 350 K/W on standard FR4 PCB with 35 mm² cathode copper area.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - making it suitable for micropower bias networks where quiescent current must remain below 100 µA. Its intentional minor leakage rise (per AN90031) reduces switching noise in low-frequency reference paths without compromising DC accuracy.
The device exhibits a positive temperature coefficient of +6.2 mV/K at 8.2 V, enabling predictable drift compensation in multi-diode reference strings. Thermal performance is defined for three mounting conditions: standard FR4 (460 K/W), 35 mm² cathode copper (350 K/W), and 1 cm² pad (285 K/W), supporting design-aware thermal derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.2 V at IZ = 50 µA - sets precise reference level for low-bias analog circuits |
| Tolerance | ±2 % - ensures tight voltage matching across production batches for calibrated references |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output impedance and load regulation error under small-signal variation |
| Temperature Coefficient | +6.2 mV/K - enables predictable thermal drift modeling in ambient-varying environments |
| Forward Voltage | 0.9 V at IF = 10 mA - defines conduction threshold when used in series-clamp or polarity protection roles |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C with 35 mm² cathode copper - sets maximum steady-state power handling on typical PCB layout |
| Reverse Current | 0.1 µA at VR = 6.9 V - confirms low leakage near regulation knee, critical for battery runtime |
Pinout & Package
SOD523 (SC-79) plastic surface-mount package: 1.2 mm × 0.8 mm × 0.6 mm body, ultra-flat profile optimized for space-constrained PCBs. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse breakdown current and defines voltage reference polarity |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in nanoampere-bias circuits without external amplification |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - suppresses high-frequency noise in reference buffers without increasing DC error |
| Ultra-compact SMD package | SOD523 footprint (1.2 × 0.8 mm) - saves >60 % board area vs. SOD323, ideal for wearables and sensor modules |
| Controlled thermal resistance | 350 K/W with 35 mm² cathode copper - allows accurate junction temperature estimation for reliability analysis |
| Stable temperature coefficient | +6.2 mV/K at 8.2 V - supports predictable drift compensation in dual-Zener or bandgap-assisted references |
Applications
| Portable Sensor Biasing | IoT Node Voltage Reference |
|---|---|
Use Scenario: Providing stable 8.2 V bias to MEMS pressure sensor front-end amplifier in coin-cell-powered environmental monitor. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as two-terminal shunt voltage reference. Use Value: Delivers <1.5 % total error over −40 °C to +85 °C due to tight ±2 % tolerance and known +6.2 mV/K drift, extending battery life via 50 µA regulation current. |
Use Scenario: Generating local 8.2 V reference for ADC input scaling in NB-IoT cellular module with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Low-leakage shunt regulator maintaining reference integrity during deep-sleep states. Use Value: 0.1 µA reverse current at 6.9 V prevents measurable discharge of 10 µF hold-up capacitor over 72-hour sleep interval. |
| Wearable Power Rail Clamping | Industrial Signal Conditioning |
Use Scenario: Protecting 8-bit microcontroller I/O pins against transient overvoltage in wrist-worn health tracker with flexible PCB interconnects. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting voltage excursions during ESD events. Use Value: 80 Ω dynamic impedance ensures clamping voltage stays within ±0.5 V of 8.2 V under 100 mA surge, preserving GPIO integrity. |
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop transmitter in factory automation sensor head. IC Role / Device Role / Timing Role: Precision shunt reference defining current-source compliance voltage. Use Value: 300 mW power rating supports continuous 25 mA loop current at 12 V supply with 3.8 V headroom, meeting IEC 61000-4-5 surge immunity requirements. |
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-C8V2 | ±5 % tolerance, identical 8.2 V nominal, higher leakage (0.1 µA vs. B-series 0.1 µA - same value but less tightly controlled) | Acceptable where cost sensitivity outweighs precision; not suitable for calibrated instrumentation | Select for non-critical biasing where ±5 % regulation error is acceptable and unit cost reduction is prioritized |
| MMSZ5231B | 8.2 V nominal, ±5 % tolerance, SOD-123 package (2.7 × 1.4 mm), 500 mW Ptot, 30 Ω rdiff at 20 mA | Higher power handling and lower impedance, but 3.4× larger footprint and incompatible with ultra-dense layouts | Choose when higher current drive (>5 mA) or improved regulation stiffness is required, and board space permits SOD-123 |
Compared with BZX58550-C8V2, the BZX58550-B8V2X offers tighter tolerance for calibration-critical references; compared with MMSZ5231B, it sacrifices power capability and dynamic impedance for minimal footprint - making it optimal for space- and current-constrained portable designs.
Availability
BZX58550-B8V2X is available at Aetrix Electronics and suitable for portable sensor biasing, IoT node voltage reference, wearable power rail clamping, and industrial signal conditioning requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX58550-B8V2X 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, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZX58550 series belongs to Nexperia's low-current Zener regulator portfolio, engineered specifically for micropower reference and biasing in battery-operated and space-constrained electronics - emphasizing ultra-low test current, tight tolerance, and optimized noise behavior.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-B8V2X at 70 °C ambient?
At Tamb = 70 °C, derating applies from the 300 mW rating at 25 °C using the 350 K/W thermal resistance (with 35 mm² cathode copper). The allowable power is 300 mW − ((70 − 25) × 300 mW / (150 − 25)) = 192 mW. This ensures junction temperature remains below 150 °C under steady-state operation.
Can BZX58550-B8V2X be used in series with another Zener for temperature-stable reference generation?
Yes - its +6.2 mV/K temperature coefficient at 8.2 V complements negative-coefficient Zeners (e.g., BZX58550-B3V3 at −3.5 mV/K). Combining them in series enables near-zero TC reference strings, provided current matching and thermal coupling between devices are maintained.
Is the 50 µA test current mandatory for achieving specified Zener voltage?
No - the 8.2 V nominal value is guaranteed at IZ = 50 µA, but regulation occurs across 10 µA to 5 mA. Voltage shifts by ≤ ±0.15 V between 10 µA and 5 mA due to dynamic resistance (80 Ω), allowing flexible biasing while maintaining functional accuracy.
Does the "B" suffix in BZX58550-B8V2X indicate RoHS compliance?
Yes - all BZX58550 series devices, including BZX58550-B8V2X, are manufactured in accordance with Nexperia's standard RoHS-compliant process and carry full exemption documentation per EU Directive 2011/65/EU, with lead content <1000 ppm and no intentionally added cadmium, mercury, hexavalent chromium, PBB, or PBDE.
BZX58550-B8V2X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX58550
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 270 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX58550-B8V2X FAQ
1.How can I place an order for BZX58550-B8V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-B8V2X 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-B8V2X reliable?
The price and inventory of BZX58550-B8V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-B8V2X is usually 5 days.
3.What payment methods are accepted for BZX58550-B8V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-B8V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-B8V2X?
BZX58550-B8V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-B8V2X 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-B8V2X?
For technical support, including BZX58550-B8V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-B8V2X requirements.
6.How does Aetrix verify that BZX58550-B8V2X is sourced from the original manufacturer or authorized distributors?
All BZX58550-B8V2X 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-B8V2X meets industry standards.
7.What is the process for return or replacement of BZX58550-B8V2X?
All BZX58550-B8V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-B8V2X, 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-B8V2X part is unused and in its original packaging.
Return procedure for BZX58550-B8V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-B8V2X Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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