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Diodes Incorporated BZT52C47-13
- Part No.:
- BZT52C47-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C47-13.pdf
- Description:
- DIODE ZENER 47V 410MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,387
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Product details
Overview
BZT52C47-13 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 47 V, ±6.4% tolerance (44.0–50.0 V), 500 mW power dissipation at TL = +75°C, 100 Ω maximum zener impedance at 5 mA test current, and reverse leakage ≤0.1 µA at 35 V - used for precision voltage regulation and overvoltage protection in DC power rails of industrial control modules.
For engineers reviewing the BZT52C47-13 datasheet, BZT52C47-13 pinout, BZT52C47-13 application, or BZT52C47-13 equivalent, key selection criteria include zener voltage stability across temperature (−3.5 to 0 mV/°C TC), low capacitance (≈2.5 pF at 1 V), SOD123 package compatibility with high-density PCB layouts, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to clamp or regulate voltage at its specified nominal value under controlled current conditions. Its planar die construction ensures stable breakdown characteristics and low leakage, while the SOD123 package supports automated placement and reflow soldering.
The device exhibits a typical zener impedance of 100 Ω at 5 mA and <750 Ω at knee current (0.1 mA), with thermal resistance junction-to-ambient of 338 °C/W on FR-4 board - enabling predictable derating above +25°C ambient per Figure 1 in DS18004 Rev. 38-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V nominal, 44.0–50.0 V range at 5 mA - defines precise clamping threshold for 48 V rail protection |
| Power Dissipation | 500 mW at lead temperature +75°C - sets maximum continuous power handling under thermal constraints |
| Zener Impedance (ZZT) | 100 Ω max at IZT = 5 mA - determines regulation accuracy under load variation |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 35 V - ensures minimal quiescent current in standby circuits |
| Temperature Coefficient | −3.5 to 0 mV/°C - quantifies voltage drift over −65°C to +150°C operating range |
| Package | SOD123 - 2.65 mm × 1.55 mm footprint with cathode band polarity marking |
Pinout & Package
Two-terminal SOD123 package: anode and cathode terminals identified by molded cathode band. No internal pin numbering; polarity is unidirectional - cathode must be connected to higher potential for reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lower-potential rail; establishes reference point for zener conduction |
| Cathode | High-side clamping node | Connected to protected line; conducts when voltage exceeds 47 V to shunt excess current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics - supports extended temperature cycling and humidity exposure |
| Lead-free & RoHS compliant | Meets EU Directive 2011/65/EU with <900 ppm Br/Cl and <1000 ppm Sb - suitable for green manufacturing |
| Planar die construction | Enables tight voltage tolerance and repeatable breakdown behavior across production lots |
| Moisture Sensitivity Level 1 | No floor life limitation - safe for standard SMT assembly without dry pack or baking |
Applications
| Industrial Power Monitoring | Automotive ECU Voltage Clamp |
|---|---|
Use Scenario: Monitoring 48 V battery-derived supply in PLC I/O modules where transient spikes exceed nominal rail. IC Role / Device Role / Timing Role: Zener clamping element placed across input filter capacitor to limit voltage to safe levels for downstream regulators. Use Value: Prevents damage to 5 V LDOs and microcontrollers during load dump events up to 60 V peak. |
Use Scenario: Protecting CAN transceiver supply pins in engine control units exposed to ISO 7637-2 pulse 5a. IC Role / Device Role / Timing Role: Standby overvoltage protector tied between VCC and GND, conducting only during >47 V excursions. Use Value: Maintains <0.1 µA leakage at 35 V to avoid battery drain while clamping within 100 ns response. |
| Medical Sensor Bias Regulation | Telecom Line Card Protection |
Use Scenario: Providing stable 47 V bias for avalanche photodiode arrays in portable diagnostic equipment. IC Role / Device Role / Timing Role: Precision voltage reference source in high-impedance bias network with minimal self-heating. Use Value: Delivers <±0.5 V drift over −20°C to +70°C due to low TC and 100 Ω ZZ. |
Use Scenario: Secondary overvoltage protection on 48 V PoE-powered line cards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt limiter placed after primary TVS to refine clamping level near IC absolute max ratings. Use Value: Adds 2.5 pF parasitic capacitance - negligible impact on 100 Mbps Ethernet signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5270BS-7-F | Same 47 V nominal, but SOT-23 package (3-pin, dual-anode); 350 mW PD at TA = 25°C | Higher board density possible, but requires layout change and lacks AEC-Q101 qualification | Select when space-constrained PCBs demand smaller footprint and automotive compliance is not required |
| BZX84-C47 | 47 V nominal, SOT-23 package, 300 mW rating, ±5% tolerance (vs. ±6.4%), TC = −3.5 to 0 mV/°C | Lower power handling and no AEC-Q101 validation - limited to commercial-grade consumer systems | Choose for cost-sensitive non-automotive designs where 300 mW suffices and tighter tolerance is preferred |
Compared with MMBZ5270BS-7-F and BZX84-C47, BZT52C47-13 offers superior thermal robustness (500 mW at +75°C), automotive qualification, and SOD123 mechanical reliability - making it optimal for industrial and automotive voltage-clamp roles where long-term stability under thermal stress is critical.
Availability
BZT52C47-13 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECU protection, medical sensor biasing, and telecom line card surge suppression requiring stable component supply and full traceability.
Supply support for BZT52C47-13 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for medium-current voltage regulation and overvoltage protection in cost-sensitive, high-volume applications including automotive, industrial, and consumer electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZT52C47-13?
The BZT52C47-13 has a nominal zener voltage of 47 V with a guaranteed range of 44.0–50.0 V at 5 mA test current. Breakdown begins at the lower limit (44.0 V) and is fully established by 50.0 V. It is not rated for continuous operation above 50 V in reverse bias.
Does BZT52C47-13 require a series current-limiting resistor in circuit?
Yes - a series resistor is mandatory to limit zener current to ≤5 mA for stable regulation or ≤100 mA for short-duration pulse clamping. Without it, excessive power dissipation (>500 mW) will cause thermal runaway and permanent failure.
Is BZT52C47-13 compatible with lead-free reflow profiles?
Yes - the device uses matte tin finish on alloy 42 leads and is qualified for standard Pb-free reflow per J-STD-020, with peak temperature up to 260°C. Its moisture sensitivity level is 1, eliminating bake requirements prior to assembly.
How does temperature affect the zener voltage of BZT52C47-13?
The temperature coefficient ranges from −3.5 to 0 mV/°C, meaning the zener voltage decreases slightly as temperature rises. At +125°C, the shift is approximately −0.35 V from the 25°C value - a predictable, linear drift used in compensated reference designs.
BZT52C47-13 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):
- 47 V
- Tolerance:
- ±6%
- Power - Max:
- 410 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 35 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C47-13 FAQ
1.How can I place an order for BZT52C47-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C47-13 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 BZT52C47-13 reliable?
The price and inventory of BZT52C47-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C47-13 is usually 5 days.
3.What payment methods are accepted for BZT52C47-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C47-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C47-13?
BZT52C47-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C47-13 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 BZT52C47-13?
For technical support, including BZT52C47-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C47-13 requirements.
6.How does Aetrix verify that BZT52C47-13 is sourced from the original manufacturer or authorized distributors?
All BZT52C47-13 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 BZT52C47-13 meets industry standards.
7.What is the process for return or replacement of BZT52C47-13?
All BZT52C47-13 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C47-13, 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 BZT52C47-13 part is unused and in its original packaging.
Return procedure for BZT52C47-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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