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Diodes Incorporated BZT52C3V9-13-F
- Part No.:
- BZT52C3V9-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C3V9-13-F.pdf
- Description:
- DIODE ZENER 3.9V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,475
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Product details
Overview
BZT52C3V9-13-F from Diodes Incorporated is a surface-mount 3.9 V Zener diode in SOD123 package, rated for 500 mW peak power dissipation at TL = +75°C and 370 mW at TA = +25°C, with 90 Ω maximum Zener impedance at 5 mA test current, used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZT52C3V9-13-F datasheet, BZT52C3V9-13-F pinout, BZT52C3V9-13-F application, or BZT52C3V9-13-F equivalent, key selection criteria include nominal Zener voltage (3.9 V ±5%), reverse leakage (≤3.0 µA at 1.0 V), temperature coefficient (−3.5 to 0 mV/°C), and SOD123 thermal resistance (RθJA = 338 °C/W).
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage tolerance (±5% at IZT = 5 mA) and low dynamic impedance (90 Ω typical), enabling stable voltage reference in bias networks and overvoltage clamping circuits. Its planar die construction ensures consistent parametric performance across temperature.
The device exhibits a negative temperature coefficient (−3.5 to 0 mV/°C) and is qualified to AEC-Q101 for automotive-grade reliability. It supports automated assembly via tape-and-reel packaging (10,000 pcs/reel) and meets RoHS, halogen-free, and antimony-free "Green" requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.9 V nominal, 3.7–4.1 V range at 5 mA - defines precise clamping/reference level in low-current biasing |
| Power Dissipation (PD) | 370 mW at TA = +25°C - sets maximum continuous power handling on standard FR-4 PCB |
| Zener Impedance (ZZT) | 90 Ω max at 5 mA - determines regulation stiffness under varying load current |
| Reverse Leakage (IR) | ≤3.0 µA at VR = 1.0 V - ensures minimal quiescent current in standby voltage-sense paths |
| Thermal Resistance (RθJA) | 338 °C/W - indicates junction-to-ambient heat transfer efficiency on 1-inch copper pad layout |
| Operating Temperature | −65°C to +150°C - supports deployment in extended industrial and automotive environments |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g weight, UL 94V-0 flammability rating, and matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; forms reference ground return path |
| Cathode | Reverse-biased Zener terminal / voltage clamp input | Connected to higher-potential rail; conducts when voltage exceeds 3.9 V, shunting excess current |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable Zener voltage distribution and low parameter drift over time and temperature |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment power rails and sensor biasing |
| SOD123 footprint compatibility | Enables drop-in replacement in space-constrained PCB layouts without redesign |
| Halogen- and antimony-free "Green" material | Meets strict environmental compliance (Br+Cl <1500 ppm, Sb <1000 ppm) for global OEM programs |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Provides stable 3.9 V reference for ADC biasing and op-amp feedback networks in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential relative to ground. Use Value: Maintains ±1% reference stability over −40°C to +85°C due to tight 3.9 V tolerance and low ZZT. |
Use Scenario: Clamps transient spikes on 5 V I²C bus lines during ESD events in industrial sensor modules. IC Role / Device Role / Timing Role: Shunt protection device limiting voltage excursion above 4.1 V to safeguard downstream logic inputs. Use Value: Responds within nanoseconds to transients while drawing <3 µA leakage at normal operating voltage. |
| Low-Power Bias Network | Automotive LED Current Regulation |
Use Scenario: Sets base-emitter voltage for discrete transistor current sources in portable medical monitors. IC Role / Device Role / Timing Role: Precision voltage source defining emitter voltage drop in series-pass configuration. Use Value: Delivers predictable 3.9 V with <5% variation across production lots, reducing calibration overhead. |
Use Scenario: Stabilizes forward voltage for constant-current LED drivers in automotive interior lighting. IC Role / Device Role / Timing Role: Zener reference in feedback loop of linear LED driver IC to maintain luminance consistency. Use Value: AEC-Q101 qualification ensures operation across −40°C to +125°C ambient, matching vehicle cabin extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5227BS-7-F | Same 3.9 V nominal, but SOT-323 package (smaller footprint, higher RθJA = 400 °C/W) | Preferred for ultra-dense layouts where board area is constrained more than thermal margin | Select when PCB real estate is critical and power dissipation remains ≤200 mW |
| BZX84-C3V9 | 3.9 V Zener in SOT-23; 350 mW PD at TA = +25°C; higher ZZT (100 Ω max) and wider VZ tolerance (±6%) | Used in cost-sensitive consumer electronics where tighter regulation is not required | Choose for non-automotive, commercial-grade designs with relaxed accuracy and thermal demands |
Compared with MMBZ5227BS-7-F and BZX84-C3V9, BZT52C3V9-13-F offers superior thermal performance (RθJA = 338 °C/W), tighter voltage tolerance (±5% vs. ±6%), and automotive qualification-making it optimal for thermally demanding or safety-critical applications.
Availability
BZT52C3V9-13-F is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and low-power bias network applications requiring stable component supply and long-term manufacturability.
Supply support for BZT52C3V9-13-F 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 computing markets.
BZT52C3V9-13-F belongs to the BZT52C series of general-purpose Zener diodes designed for medium-current voltage regulation and clamping in cost-effective, high-volume surface-mount applications.
FAQ
What is the maximum reverse leakage current for BZT52C3V9-13-F at 1.0 V?
The maximum reverse leakage current is 3.0 µA at VR = 1.0 V and TA = +25°C, per the Electrical Characteristics table in DS18004 Rev. 38-2. This low leakage ensures minimal power loss in always-on reference circuits and preserves battery life in portable systems.
Can BZT52C3V9-13-F be used in automotive applications?
Yes - BZT52C3V9-13-F is qualified to AEC-Q101 standards and offered in automotive-grade variants (e.g., BZT52C3V9Q-13-F). Its −65°C to +150°C operating range, robust SOD123 package, and halogen-free construction meet Tier-1 automotive electronics requirements.
What is the thermal resistance from junction to ambient (RθJA) for this device?
RθJA is 338 °C/W when mounted on an FR-4 PCB with a 1-inch copper pad layout, as specified in the Thermal Characteristics section. This value guides thermal design for continuous operation up to 370 mW at room temperature.
How does the Zener voltage change with temperature?
The temperature coefficient ranges from −3.5 to 0 mV/°C, indicating a slight negative drift in Zener voltage as temperature increases. This behavior is typical for low-voltage Zeners and must be accounted for in precision reference designs operating across wide temperature ranges.
BZT52C3V9-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±5.13%
- Power - Max:
- 370 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C3V9-13-F FAQ
1.How can I place an order for BZT52C3V9-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V9-13-F 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 BZT52C3V9-13-F reliable?
The price and inventory of BZT52C3V9-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V9-13-F is usually 5 days.
3.What payment methods are accepted for BZT52C3V9-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V9-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V9-13-F?
BZT52C3V9-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V9-13-F 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 BZT52C3V9-13-F?
For technical support, including BZT52C3V9-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V9-13-F requirements.
6.How does Aetrix verify that BZT52C3V9-13-F is sourced from the original manufacturer or authorized distributors?
All BZT52C3V9-13-F 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 BZT52C3V9-13-F meets industry standards.
7.What is the process for return or replacement of BZT52C3V9-13-F?
All BZT52C3V9-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V9-13-F, 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 BZT52C3V9-13-F part is unused and in its original packaging.
Return procedure for BZT52C3V9-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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