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Diodes Incorporated BZT52C4V3-13
- Part No.:
- BZT52C4V3-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C4V3-13.pdf
- Description:
- DIODE ZENER 4.3V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,923
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Product details
Overview
BZT52C4V3-13 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 4.3 V, ±5% tolerance (4.0–4.6 V), 500 mW power dissipation at TL = +75°C, and 370 mW at TA = +25°C, used for precision voltage regulation and overvoltage protection in low-power analog circuits and power supply feedback paths.
For engineers reviewing the BZT52C4V3-13 datasheet, BZT52C4V3-13 pinout, BZT52C4V3-13 application, or BZT52C4V3-13 equivalent, key selection criteria include zener voltage accuracy, dynamic impedance (90 Ω @ 5 mA), reverse leakage (≤3.0 µA @ 1.0 V), temperature coefficient (−3.5 to 0 mV/°C), and SOD123 package compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 5 mA and exhibits low dynamic impedance (90 Ω) and knee impedance (600 Ω @ 1.0 mA), enabling stable reference performance under varying load conditions. Its −3.5 to 0 mV/°C temperature coefficient ensures predictable drift across −65°C to +150°C operating range.
The device uses planar die construction in an SOD123 plastic package with matte tin-plated alloy 42 leads, rated for 338°C/W junction-to-ambient thermal resistance on FR-4 PCB, and qualified to AEC-Q101 for automotive reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3 V nominal, 4.0–4.6 V range @ 5 mA - defines regulated output voltage in shunt regulator applications |
| Power Dissipation (PD) | 370 mW @ TA = +25°C - maximum continuous power before thermal derating begins |
| Zener Impedance (ZZT) | 90 Ω @ 5 mA - low dynamic resistance ensures minimal output voltage variation with current changes |
| Reverse Leakage (IR) | ≤3.0 µA @ VR = 1.0 V - guarantees low standby current in voltage-sense or clamping roles |
| Temperature Coefficient | −3.5 to 0 mV/°C - enables predictable voltage drift compensation in temperature-sensitive references |
| Junction-to-Lead RθJL | 150 °C/W - supports localized heat transfer to PCB copper pad for sustained operation |
Pinout & Package
Package: SOD123 - surface-mount plastic case (UL 94V-0), 0.010 g weight, cathode band marking, compatible with standard reflow profiles and automated pick-and-place.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in shunt regulation; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage regulation node | Connected to regulated rail; maintains fixed voltage relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight zener voltage tolerance (±5%) and repeatable breakdown characteristics across production lots |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment power rails and sensor biasing |
| SOD123 package | Supports high-density PCB layouts and full compatibility with IPC-7351B footprint standards |
| Lead-free & halogen-free | Fulfills RoHS 2 (2011/65/EU) and JEDEC J-STD-020 Level 1 moisture sensitivity requirements |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Shunt reference element in optocoupler feedback loop. Use Value: Maintains ±1% output regulation via precise 4.3 V reference, minimizing dependency on IC internal reference drift. |
Use Scenario: Protecting microcontroller I/O pins from ESD-induced transients or supply rail overshoot. IC Role / Device Role / Timing Role: Low-leakage clamping diode tied between signal line and ground. Use Value: Limits voltage to ≤4.6 V with <3.0 µA leakage at 1.0 V, preserving signal integrity without loading. |
| Voltage Reference | Automotive Sensor Biasing |
Use Scenario: Providing stable bias for analog front-end circuitry in industrial transmitters. IC Role / Device Role / Timing Role: Precision DC reference source for ADC input scaling networks. Use Value: Delivers 4.3 V ±0.3 V stability over −40°C to +85°C, reducing calibration frequency. |
Use Scenario: Supplying regulated excitation voltage to resistive temperature sensors (RTDs) in engine control units. IC Role / Device Role / Timing Role: Low-drift bias generator referenced to vehicle ground. Use Value: −3.5 to 0 mV/°C TC enables <±10 mV total drift over −40°C to +125°C, meeting ASIL-B sensing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5229BS-7-F | Zener voltage 4.3 V, but SOT-23 package (higher thermal resistance: 400°C/W); 350 mW PD @ TA | Less suitable for high-reliability automotive due to non-AEC-Q101 rating; smaller footprint limits power handling | Select when board space is constrained and thermal load remains below 200 mW. |
| BZX84-C4V3-7 | Same 4.3 V rating, SOT-23 package, AEC-Q101 qualified, but higher ZZT = 120 Ω @ 5 mA | Higher impedance reduces regulation accuracy in dynamic load conditions; same automotive qualification | Prefer for cost-sensitive automotive modules where ±2% regulation tolerance is acceptable. |
Compared with MMBZ5229BS-7-F and BZX84-C4V3-7, BZT52C4V3-13 offers superior thermal performance (338°C/W vs. ≥400°C/W), tighter impedance (90 Ω), and identical AEC-Q101 qualification-making it optimal for thermally demanding, high-accuracy shunt regulation.
Availability
BZT52C4V3-13 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and voltage reference applications requiring stable component supply, automotive-grade reliability, and RoHS-compliant manufacturing.
Supply support for BZT52C4V3-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets since 1960.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-effective, high-volume voltage regulation and protection in space-constrained surface-mount applications.
FAQ
What is the maximum reverse voltage (VR) that BZT52C4V3-13 can block before breakdown?
The device is rated for reverse breakdown at 4.3 V nominal, with guaranteed operation up to 4.6 V (max) at 5 mA test current. It does not specify a distinct blocking voltage; instead, it enters controlled avalanche conduction above ~4.0 V. Reverse leakage remains ≤3.0 µA at 1.0 V, confirming effective blocking below the zener knee.
Can BZT52C4V3-13 be used in place of a 3.3 V Zener diode?
No - its nominal zener voltage is 4.3 V (range 4.0–4.6 V), making it unsuitable as a direct replacement for 3.3 V devices like BZT52C3V3. Substituting would raise regulated voltage by >1 V, potentially damaging downstream circuitry. Use BZT52C3V3-13 for 3.3 V applications.
Is BZT52C4V3-13 suitable for high-frequency noise suppression?
No - its typical capacitance is ~30 pF at 1 V reverse bias (inferred from Fig. 5 trend for 4.3 V nominal), and it lacks specified RF performance. It is intended for DC/low-frequency regulation and clamping, not RF filtering or EMI suppression.
Does the "-13" suffix indicate tape-and-reel packaging, and what is the reel quantity?
Yes - the "-13" suffix denotes 10,000 units per tape-and-reel pack, per Diodes Incorporated's ordering nomenclature. This format supports high-speed automated placement and is standard for commercial-grade versions of the SOD123-packaged BZT52 series.
BZT52C4V3-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±7%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C4V3-13 FAQ
1.How can I place an order for BZT52C4V3-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C4V3-13 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 BZT52C4V3-13 reliable?
The price and inventory of BZT52C4V3-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C4V3-13 is usually 5 days.
3.What payment methods are accepted for BZT52C4V3-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C4V3-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C4V3-13?
BZT52C4V3-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C4V3-13 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 BZT52C4V3-13?
For technical support, including BZT52C4V3-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C4V3-13 requirements.
6.How does Aetrix verify that BZT52C4V3-13 is sourced from the original manufacturer or authorized distributors?
All BZT52C4V3-13 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 BZT52C4V3-13 meets industry standards.
7.What is the process for return or replacement of BZT52C4V3-13?
All BZT52C4V3-13 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C4V3-13, 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 BZT52C4V3-13 part is unused and in its original packaging.
Return procedure for BZT52C4V3-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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