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Nexperia USA Inc. BZT52-C4V3J
- Part No.:
- BZT52-C4V3J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C4V3J.pdf
- Description:
- DIODE ZENER 4.3V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,683
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Product details
Overview
BZT52-C4V3J from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 4.3 V nominal Zener voltage at 5 mA, with 500 Ω max differential resistance and 3 μA reverse current at 1 V, used for low-power voltage regulation and reference in consumer and industrial power management circuits.
For engineers reviewing the BZT52-C4V3J datasheet, BZT52-C4V3J pinout, BZT52-C4V3J application, or BZT52-C4V3J equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (210 K/W junction-to-solder-point), forward voltage (≤0.9 V @ 10 mA), power dissipation (590 mW @ 25 °C), and SOD123 surface-mount compatibility.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse bias above its specified Zener breakdown voltage (4.0–4.6 V) with low dynamic impedance to maintain stable output under varying load currents. Its design targets precision clamping and biasing where moderate accuracy and compact footprint are prioritized over automotive-grade qualification.
It exhibits a temperature coefficient of –3.5 to 0.0 mV/K at 5 mA, enabling predictable drift behavior across –55 °C to +150 °C ambient range, and supports non-repetitive surge handling up to 6.0 A peak reverse current (100 μs pulse) without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.0–4.6 V at IZ = 5 mA - defines stable regulation point for low-voltage rail referencing |
| Differential Resistance (rdif) | ≤500 Ω - limits output voltage variation under load current changes |
| Reverse Current (IR) | ≤3 μA at VR = 1 V - ensures minimal leakage in standby or high-impedance bias networks |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables use as polarity-sensitive clamp or protection element |
| Total Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction-to-Solder-Point Thermal Resistance (Rth(j-sp)) | 210 K/W - determines temperature rise above solder joint under steady-state bias |
| Package | SOD123 - 2.8 × 1.7 mm surface-mount outline with cathode marking band, optimized for automated assembly |
Pinout & Package
SOD123 plastic surface-mount package with 2 leads: compact 2.8 mm × 1.7 mm footprint, 0.7 mm lead pitch, cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is not required |
| Low differential resistance (≤500 Ω) | Maintains <±20 mV output shift per 10 mA load change near nominal Zener current |
| Small SOD123 package | Reduces PCB area by >40 % vs. DO-35 through-hole equivalents while supporting reflow assembly |
| 150 °C maximum junction temperature | Supports operation in thermally constrained environments such as enclosed power supplies or motor control boards |
| Non-repetitive peak reverse current rating (6.0 A) | Provides transient overvoltage clamping capability for ESD or inductive spike suppression |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp Circuit |
|---|---|
|
Use Scenario: Providing stable 4.3 V reference for ADC biasing or op-amp feedback in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed reference potential independent of supply variation. Use Value: Delivers ±5 % accuracy with <500 Ω dynamic impedance, minimizing reference error contribution to system measurement uncertainty. |
Use Scenario: Protecting microcontroller I/O pins from 5 V rail transients exceeding 4.6 V in industrial control modules. IC Role / Device Role / Timing Role: Shunt clamping device that conducts excess current when input voltage exceeds Zener breakdown threshold. Use Value: Limits transient voltage to ≤4.6 V with 6.0 A non-repetitive surge capability, preventing latch-up or gate oxide damage. |
| Low-Power Bias Network | LED Current Regulation |
|
Use Scenario: Setting bias point for JFET amplifier stages in audio preamplifiers requiring stable gate voltage. IC Role / Device Role / Timing Role: Voltage-setting element establishing fixed DC potential at high-impedance node with minimal quiescent current draw. Use Value: Draws only ≤3 μA at 1 V reverse bias, preserving signal chain input impedance and reducing standby power consumption. |
Use Scenario: Stabilizing forward current for indicator LEDs in automotive dashboard interfaces powered from 5 V bus. IC Role / Device Role / Timing Role: Series-connected Zener providing constant voltage drop to set current-limiting resistor effective value. Use Value: Maintains LED brightness within ±5 % across 4.0–4.6 V Zener range despite supply ripple or temperature drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5229BS | Same 4.3 V nominal Zener, ±5 % tolerance, but SOT-23 package (3-pin, anode/cathode/common) and higher 600 mW Ptot | Requires different PCB layout and may introduce parasitic capacitance due to larger pad area | Prefer when higher power margin or existing SOT-23 footprint reuse is needed |
| Vishay BZX84-C4V3 | Identical 4.3 V / ±5 % spec, but in SOT-23 package and rated for 350 mW Ptot (lower thermal capacity) | Limited to lower continuous current applications; less suitable for sustained 5 mA regulation | Choose only for space-constrained designs where 350 mW derating is acceptable |
Compared with MMBZ5229BS and BZX84-C4V3, BZT52-C4V3J offers superior thermal performance (210 K/W Rth(j-sp)) and higher continuous power handling (590 mW) in a smaller SOD123 footprint, making it optimal for thermally dense PCBs requiring reliable 4.3 V reference without forced cooling.
Availability
BZT52-C4V3J is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power biasing applications requiring stable component supply, consistent parametric performance, and RoHS-compliant SMD sourcing.
Supply support for BZT52-C4V3J 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.
BZT52-C4V3J belongs to the BZT52 series of general-purpose Zener diodes designed for cost-sensitive, space-constrained voltage regulation and clamping in consumer, industrial, and computing applications-not qualified for automotive use.
FAQ
What is the Zener voltage tolerance for BZT52-C4V3J?
The BZT52-C4V3J has a ±5 % Zener voltage tolerance, meaning its nominal 4.3 V breakdown occurs between 4.0 V and 4.6 V at 5 mA test current. This tolerance is confirmed in Table 8 of the Nexperia datasheet and applies across the full operating temperature range of –55 °C to +150 °C.
Can BZT52-C4V3J be used in place of a BZT52-B4V3?
No-BZT52-B4V3 has ±2 % tolerance (4.21–4.39 V), while BZT52-C4V3J has ±5 % (4.0–4.6 V). Their marking codes differ (DD vs. C7), and they belong to separate tolerance series. Substitution requires verification of system-level voltage margin and stability requirements.
What is the maximum continuous reverse current this diode can handle?
The maximum continuous reverse (Zener) current is derived from Ptot = 590 mW and VZ = 4.3 V, yielding ~137 mA. However, the datasheet specifies 250 mA absolute maximum forward current and does not define a continuous Zener current limit-designers must ensure junction temperature stays ≤150 °C using Rth(j-a) = 350 K/W or Rth(j-sp) = 210 K/W.
Is BZT52-C4V3J qualified for automotive applications?
No-this part is explicitly marked as non-automotive qualified in the revision history (Section 13). Nexperia offers separate –Q qualified variants (e.g., BZT52-C4V3J-Q) for automotive use. Using BZT52-C4V3J in automotive systems voids warranty and violates functional safety requirements.
BZT52-C4V3J 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):
- 4.3 V
- Tolerance:
- ±7%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 3 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-C4V3J FAQ
1.How can I place an order for BZT52-C4V3J through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C4V3J 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-C4V3J reliable?
The price and inventory of BZT52-C4V3J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C4V3J is usually 5 days.
3.What payment methods are accepted for BZT52-C4V3J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C4V3J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C4V3J?
BZT52-C4V3J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C4V3J 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-C4V3J?
For technical support, including BZT52-C4V3J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C4V3J requirements.
6.How does Aetrix verify that BZT52-C4V3J is sourced from the original manufacturer or authorized distributors?
All BZT52-C4V3J 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-C4V3J meets industry standards.
7.What is the process for return or replacement of BZT52-C4V3J?
All BZT52-C4V3J units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C4V3J, 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-C4V3J part is unused and in its original packaging.
Return procedure for BZT52-C4V3J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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