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Nexperia USA Inc. BZT52-C2V4X
- Part No.:
- BZT52-C2V4X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C2V4X.pdf
- Description:
- DIODE ZENER 2.4V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
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Product details
Overview
BZT52-C2V4X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 2.4 V nominal regulation at 5 mA, with 400 Ω max differential resistance and 50 μA max reverse current at 1 V, used for low-power voltage reference and overvoltage protection in consumer power rails.
For engineers reviewing the BZT52-C2V4X datasheet, BZT52-C2V4X pinout, BZT52-C2V4X application, or BZT52-C2V4X equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (210 K/W junction-to-solder-point), cathode-marked SOD123 footprint compatibility, and non-automotive qualification status per Rev. 2 (2025).
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 2.4 V output across 1–5 mA test currents, with temperature coefficient of –3.5 to 0.0 mV/K and low 450 pF capacitance at 1 MHz/0 V, enabling use in noise-sensitive biasing and feedback networks.
Its SOD123 package delivers 590 mW total power dissipation at 25 °C ambient on FR4 PCB with 1 cm² cathode pad, and supports non-repetitive 6.0 A surge current (100 μs) without degradation - critical for transient suppression in compact DC-DC converter outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.2 V to 2.6 V at IZ = 5 mA - defines regulation window for precision 2.4 V reference |
| Differential Resistance (rdif) | ≤ 400 Ω - limits output voltage shift under load current variation |
| Reverse Current (IR) | ≤ 50 μA at VR = 1 V - ensures low standby leakage in battery-powered circuits |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - enables use as polarity protection diode in dual-role designs |
| Total Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power in standard FR4 layout |
| Junction Temperature (Tj) | –55 °C to +150 °C - supports operation in industrial ambient environments |
Pinout & Package
SOD123 surface-mount plastic package: 2.80 mm × 1.70 mm body, 0.70 mm lead pitch, cathode marked by band on end; optimized for reflow soldering with defined 2.36 mm × 0.91 mm copper pad per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking band identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Wide Zener voltage range | 2.4 V to 75 V in E24 steps - supports single-family sourcing across diverse supply rails |
| Low differential resistance | 400 Ω max at 2.4 V - improves regulation accuracy under varying load conditions |
| Small SMD footprint | SOD123 package (2.8 × 1.7 mm) - saves board space vs. DO-35 or SOD-323 alternatives |
| Controlled temperature coefficient | –3.5 to 0.0 mV/K at 5 mA - minimizes drift in temperature-varying environments |
| High surge capability | 6.0 A non-repetitive peak reverse current (100 μs) - withstands ESD and line transients |
Applications
| USB Port Overvoltage Clamp | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Clamping 5 V USB VBUS against surges exceeding 5.5 V in portable accessories. IC Role / Device Role / Timing Role: Zener diode connected between VBUS and GND, conducting above 2.4 V to shunt excess energy into PCB plane. Use Value: Prevents damage to downstream USB interface ICs by limiting peak voltage to safe margin below absolute maximum ratings. |
Use Scenario: Providing stable 2.4 V threshold for reset supervisor ICs monitoring 3.3 V logic rails. IC Role / Device Role / Timing Role: Biasing reference input of reset generator (e.g., MAX809) via resistor divider. Use Value: Enables accurate brown-out detection with ±5 % trip point tolerance, independent of supply ripple. |
| Low-Power Sensor Bias Network | LED Current Limiter Feedback Node |
Use Scenario: Generating stable bias voltage for analog sensor signal conditioning in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener referenced voltage source feeding op-amp non-inverting input in instrumentation amplifier stage. Use Value: Reduces offset drift contribution from reference source, improving measurement stability over temperature. |
Use Scenario: Setting current sense threshold in constant-current LED driver feedback loop. IC Role / Device Role / Timing Role: Connected across current-sense resistor to clamp comparator input when target current is exceeded. Use Value: Adds fast overcurrent protection layer without requiring dedicated protection IC, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-B2V4 | ±2 % tolerance (vs. ±5 %), 85 Ω max rdif, higher cost | Better regulation accuracy required in precision analog references | Select when tighter voltage tolerance and lower dynamic impedance outweigh cost sensitivity |
| MMBZ5221BS | Same SOD-123 package, ±5 %, but 220 Ω max rdif at 2.4 V, higher Ptot (350 mW) | Lower power handling; not suitable for 590 mW continuous dissipation scenarios | Choose only for space-constrained designs where 350 mW rating suffices and Nexperia sourcing is unavailable |
Compared with BZT52-B2V4, the BZT52-C2V4X trades regulation accuracy and dynamic impedance for cost efficiency; compared with MMBZ5221BS, it provides 68 % higher continuous power rating and identical tolerance, making it preferable for thermally demanding 2.4 V reference nodes.
Availability
BZT52-C2V4X is available at Aetrix Electronics and suitable for USB power management, microcontroller reset supervision, low-power sensor biasing, and LED driver feedback requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52-C2V4X 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZT52 series targets general-purpose voltage regulation in cost-sensitive, space-constrained consumer and industrial electronics - emphasizing manufacturability, thermal robustness, and broad voltage coverage in standardized SMD packages.
FAQ
What is the Zener voltage tolerance for BZT52-C2V4X?
The BZT52-C2V4X has a nominal Zener voltage of 2.4 V with a tolerance of ±5 %, meaning its actual breakdown voltage falls between 2.2 V and 2.6 V when tested at 5 mA. This tolerance is confirmed in Table 8 of the Nexperia datasheet Rev. 2 (2025) and applies to all C-series variants in the BZT52 family.
Can BZT52-C2V4X be used in automotive applications?
No - the BZT52-C2V4X is explicitly designated as non-automotive qualified per Revision History in the datasheet (Rev. 2, 2025), which states that C-selection parts have changed to non-automotive qualification. For automotive use, Nexperia offers separate -Q qualified variants such as BZT52-C2V4-Q.
What is the maximum continuous power dissipation at 70 °C ambient?
At 70 °C ambient, the maximum continuous power dissipation is derated from 590 mW (at 25 °C) using the thermal resistance Rth(j-a) of 350 K/W. Derating yields approximately 425 mW - calculated as Ptot = (150 °C − 70 °C) / 350 K/W = 0.229 W - consistent with Nexperia's linear derating curve in Section 8.
How is cathode identification implemented on the SOD123 package?
The cathode is identified by a visible marking band on the SOD123 package body, aligned with Pin 1 per Table 2 (Pinning Information). The band corresponds to the cathode terminal in the simplified outline graphic and must be oriented toward the PCB silkscreen indicator during placement to ensure correct polarity in reverse-bias operation.
BZT52-C2V4X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±8.3%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 85 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C2V4X FAQ
1.How can I place an order for BZT52-C2V4X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C2V4X 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 BZT52-C2V4X reliable?
The price and inventory of BZT52-C2V4X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C2V4X is usually 5 days.
3.What payment methods are accepted for BZT52-C2V4X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C2V4X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C2V4X?
BZT52-C2V4X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C2V4X 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 BZT52-C2V4X?
For technical support, including BZT52-C2V4X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C2V4X requirements.
6.How does Aetrix verify that BZT52-C2V4X is sourced from the original manufacturer or authorized distributors?
All BZT52-C2V4X 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 BZT52-C2V4X meets industry standards.
7.What is the process for return or replacement of BZT52-C2V4X?
All BZT52-C2V4X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C2V4X, 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 BZT52-C2V4X part is unused and in its original packaging.
Return procedure for BZT52-C2V4X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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