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NXP Semiconductors BZX384-B6V8/ZLX
- Part No.:
- BZX384-B6V8/ZLX
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B6V8/ZLX.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,820
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Product details
Overview
BZX384-B6V8/ZLX from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 6.8 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 150 °C maximum junction temperature. It provides stable reference voltage in low-power linear regulators and overvoltage protection circuits for consumer and industrial power management.
For engineers reviewing the BZX384-B6V8/ZLX datasheet, BZX384-B6V8/ZLX pinout, BZX384-B6V8/ZLX application, or BZX384-B6V8/ZLX equivalent, key selection criteria include its 6.8 V Zener voltage with ±2 % tolerance, 80 Ω typical differential resistance at 5 mA, 2 μA reverse current at 4.76 V, +1.2 mV/K temperature coefficient, and SOD323 thermal resistance of 415 K/W in free air.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain a stable DC reference voltage under varying load and temperature conditions. Its design targets low-current regulation (IZ = 5 mA), with specified performance at Tj = 25 °C and validated up to 150 °C junction temperature.
The device features a non-repetitive peak reverse power dissipation of 40 W for 100 μs pulses and supports mounting on FR4 PCBs with single-sided copper. Its 2-pin SOD323 package enables compact placement in space-constrained power rails and signal conditioning paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.66 V to 6.94 V at IZ = 5 mA - defines tight ±2 % regulation window for precision reference applications |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA - determines output impedance and voltage stability under load variation |
| Reverse Current (IR) | 2 μA max at VR = 4.76 V - ensures low leakage in standby or high-impedance bias networks |
| Temperature Coefficient (SZ) | +1.2 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius for thermal design margining |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction Temperature (Tj) | 150 °C max - establishes upper thermal limit for reliability in enclosed or high-ambient environments |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction threshold when used in forward-biased clamp or protection roles |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode marked by bar on top surface; footprint compatible with JEDEC-standard reflow and wave soldering per Figures 12–13.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants without requiring laser trimming or higher-cost alternatives |
| 300 mW power rating | Supports continuous operation in 5–10 mA bias networks without external heatsinking on standard PCBs |
| 415 K/W junction-to-ambient thermal resistance | Allows direct thermal modeling for ambient temperature derating in sealed enclosures or stacked boards |
| Non-repetitive 40 W surge capability | Provides transient overvoltage clamping for ESD and inductive kick events without degradation |
| 150 °C maximum junction temperature | Permits use in automotive under-hood auxiliary circuits and industrial motor drive control logic |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in low-current linear regulators and LDO error amplifiers. IC Role / Device Role / Timing Role: Zener reference element providing fixed 6.8 V reference point for comparator or op-amp input. Use Value: Delivers ±2 % accuracy and <80 Ω dynamic impedance to minimize output voltage drift across line/load/temperature. |
Use Scenario: Clamping transient spikes on 5 V or 12 V supply rails in microcontroller peripherals. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground during ESD or inductive switching events. Use Value: Withstands 40 W non-repetitive surges and maintains regulation within 6.66–6.94 V window during clamping. |
| Signal Level Translation | Current Source Biasing |
Use Scenario: Generating stable bias voltages for analog sensor interfaces operating from unregulated sources. IC Role / Device Role / Timing Role: Precision voltage reference for setting common-mode levels in ADC front-ends or op-amp gain stages. Use Value: Low 2 μA leakage at 4.76 V ensures minimal loading on high-impedance sensor outputs and bias networks. |
Use Scenario: Establishing constant current through LEDs or phototransistors in optocoupler feedback loops. IC Role / Device Role / Timing Role: Regulated voltage source enabling predictable current via series resistor in constant-current sink configurations. Use Value: +1.2 mV/K temperature coefficient allows predictable current drift compensation in closed-loop designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5226BS-7-F | 6.8 V ±5 % tolerance; 200 mW Ptot; SOD-123 package; 100 Ω rdif max | Looser tolerance and lower power rating reduce accuracy and headroom in precision references | Select when cost sensitivity outweighs regulation tightness and thermal margin requirements |
| Vishay BZX384-C6V8-TP | 6.8 V ±5 % tolerance; same SOD323 package; 300 mW Ptot; 150 Ω rdif max | Higher differential resistance increases output impedance and reduces load regulation performance | Choose only for non-critical biasing where ±5 % voltage variation is acceptable |
Compared with MMBZ5226BS-7-F and BZX384-C6V8-TP, the BZX384-B6V8/ZLX delivers superior voltage accuracy (±2 % vs. ±5 %), lower dynamic impedance (80 Ω vs. ≥100 Ω), and identical thermal performance in the same SOD323 footprint-making it optimal for precision reference and robust clamping.
Availability
BZX384-B6V8/ZLX is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and signal level translation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for BZX384-B6V8/ZLX 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 discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The BZX384 series is part of Nexperia's voltage regulator diode portfolio designed specifically for low-power, surface-mount Zener reference and protection applications across consumer, industrial, and computing markets.
FAQ
What is the Zener voltage tolerance of BZX384-B6V8/ZLX?
The BZX384-B6V8/ZLX has a ±2 % Zener voltage tolerance, meaning its breakdown voltage is guaranteed between 6.66 V and 6.94 V when tested at 5 mA reverse current and 25 °C junction temperature. This tighter tolerance than the ±5 % BZX384-C variants supports higher-accuracy voltage referencing in feedback networks and precision biasing circuits. The BZX384-B6V8/ZLX achieves this specification without requiring post-package trimming.
What is the maximum continuous power dissipation for BZX384-B6V8/ZLX?
The BZX384-B6V8/ZLX has a maximum total power dissipation of 300 mW at ambient temperatures ≤25 °C when mounted on an FR4 PCB with single-sided copper and standard footprint. Derating is required above 25 °C at 2.4 mW/°C based on its 415 K/W junction-to-ambient thermal resistance. The BZX384-B6V8/ZLX must not exceed this limit to ensure reliable operation and avoid thermal runaway.
How is the cathode identified on the BZX384-B6V8/ZLX package?
The cathode of the BZX384-B6V8/ZLX is identified by a marking bar on the top surface of the SOD323 package, aligned with Pin 1. This matches the pinning shown in Table 2 of the Nexperia datasheet, where Pin 1 is labeled "K" (cathode) and Pin 2 is "A" (anode). Correct orientation is critical for proper reverse-bias operation in regulation or clamping functions. The BZX384-B6V8/ZLX must be placed with the bar toward the regulated output node.
What is the differential resistance of BZX384-B6V8/ZLX at 5 mA?
The BZX384-B6V8/ZLX has a maximum differential resistance (rdif) of 80 Ω at 5 mA Zener current and 25 °C. This value reflects the slope of the V–I curve in the breakdown region and directly impacts regulation accuracy under varying load conditions. Lower rdif improves load regulation-critical in applications like LDO feedback networks where the BZX384-B6V8/ZLX serves as a stable reference source.
Does BZX384-B6V8/ZLX support surge protection applications?
Yes, the BZX384-B6V8/ZLX supports non-repetitive surge protection with a peak reverse power dissipation rating of 40 W for 100 μs pulses at 25 °C junction temperature. Its ability to clamp transients while maintaining regulation within 6.66–6.94 V makes it suitable for ESD suppression and inductive spike limiting in power rails. However, the BZX384-B6V8/ZLX is not rated for repetitive surges and requires appropriate series impedance to limit average power.
BZX384-B6V8/ZLX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-B6V8/ZLX FAQ
1.How can I place an order for BZX384-B6V8/ZLX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B6V8/ZLX 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 BZX384-B6V8/ZLX reliable?
The price and inventory of BZX384-B6V8/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B6V8/ZLX is usually 5 days.
3.What payment methods are accepted for BZX384-B6V8/ZLX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B6V8/ZLX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B6V8/ZLX?
BZX384-B6V8/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B6V8/ZLX 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 BZX384-B6V8/ZLX?
For technical support, including BZX384-B6V8/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B6V8/ZLX requirements.
6.How does Aetrix verify that BZX384-B6V8/ZLX is sourced from the original manufacturer or authorized distributors?
All BZX384-B6V8/ZLX 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 BZX384-B6V8/ZLX meets industry standards.
7.What is the process for return or replacement of BZX384-B6V8/ZLX?
All BZX384-B6V8/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B6V8/ZLX, 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 BZX384-B6V8/ZLX part is unused and in its original packaging.
Return procedure for BZX384-B6V8/ZLX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B6V8/ZLX Tags
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MMBZ5240B-7-F
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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
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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