BZX384-C43 Nexperia Diode (Small Outline Diode) In Stock
Nexperia BZX384-C43 is a 43 V, 0.3 W silicon Zener diode with ±5% tolerance in a compact 2-pin UMD (SOD-323) surface mount package. Available in stock with worldwide shipping.
- Manufacturer
- Nexperia
- Package
- Small Outline Diode
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- BZX384-C43 Datasheet PDF
- Category
- Diode
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of BZX384-C43?
- 43 V Zener voltage with ±5% tolerance providing stable voltage clamping and reference regulation in compact circuitry
- 0.3 W power dissipation rating supporting low to moderate current clamping applications in 2-pin SOD-323/UMD package
- Low dynamic impedance (max 150 Ω) and knee impedance (max 375 Ω) for efficient regulation behavior near the breakdown point
- Single silicon Zener element in ultra-compact UMD (SOD-323) package enabling minimal PCB footprint in space-constrained designs
- RoHS-compliant (e3 JEDEC) and halogen-free construction meeting global environmental regulations
What is BZX384-C43 used for?
The BZX384-C43 is used for voltage clamping, overvoltage protection, and reference voltage generation in consumer electronics, industrial control circuitry, and telecommunications equipment requiring a 43 V regulation point. Its compact SOD-323 footprint makes it ideal for mobile devices, power supply protection circuits, and signal conditioning networks where PCB space is limited. The 0.3 W rating suits low-current transient clamping applications in input protection stages and ESD management circuits.
What are the specifications of BZX384-C43?
| Date Of Intro | 2017-02-01 |
| YTEOL | 7 |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | ZENER DIODE |
| Dynamic Impedance-Max | 150Ω |
| JESD-30 Code | R-PDSO-G2 |
| JESD-609 Code | e3 |
| Knee Impedance-Max | 375Ω |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | UNIDIRECTIONAL |
| Power Dissipation-Max | 0.3W |
| Reference Standard | IEC-60134 |
| Reference Voltage-Nom | 43V |
| Reverse Current-Max | 0.05 µA |
| Reverse Test Voltage | 30.1V |
| Surface Mount | YES |
| Technology | ZENER |
| Terminal Finish | TIN |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Temp Coeff-Max | 46.6mV/°C |
| Voltage Tol-Max | 5% |
| Working Test Current | 2mA |
| Package | Small Outline Diode |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China, Malaysia |
Where can I find the BZX384-C43 datasheet?
BZX384-C43 Datasheet DownloadOfficial datasheet from Nexperia
What are equivalent replacements for BZX384-C43?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the Zener voltage and tolerance of the BZX384-C43, and how does this affect voltage regulation precision?
The BZX384-C43 has a Zener voltage of 43 V with a ±5% tolerance, meaning the actual regulation voltage falls between 40.85 V and 45.15 V. This tolerance level is appropriate for overvoltage clamping and protection applications where exact voltage precision is less critical than limiting maximum voltage stress on downstream components.
What power dissipation can the BZX384-C43 handle, and what current levels does that support at 43 V?
The BZX384-C43 is rated for 0.3 W maximum power dissipation. At its 43 V Zener voltage, this corresponds to a continuous Zener current of approximately 7 mA. This modest power rating suits low-current reference and clamping applications rather than high-current series regulation, and is consistent with the small SOD-323 UMD package's thermal capacity.
In what types of protection circuits is the BZX384-C43 most effective at 43 V?
The BZX384-C43 is effective in input overvoltage protection, ESD clamping, and signal rail limiting circuits where the supply or input signal must be clamped below approximately 43 V. Industrial sensor interfaces, communication line protection, and power supply crowbar or clamp circuits operating in the 36 V to 48 V nominal range are typical applications for this Zener diode.
How does the SOD-323 (UMD) package of the BZX384-C43 compare to larger Zener packages for PCB density?
The 2-pin SOD-323 (UMD) package of the BZX384-C43 occupies a footprint of approximately 1.7 mm x 1.25 mm, significantly smaller than SOD-123 (2.7 mm x 1.5 mm) or DO-214 (3.5 mm+) packages. This smaller footprint is advantageous in dense SMT assemblies such as mobile devices, compact industrial modules, and multi-rail power supply boards where space efficiency is critical.
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