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Diodes Incorporated BZT52C47-7-F
- Part No.:
- BZT52C47-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C47-7-F.pdf
- Description:
- DIODE ZENER 47V 410MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:28,143
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Product details
Overview
BZT52C47-7-F from Diodes Incorporated is a surface-mount 47 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% nominal Zener voltage tolerance (44.0–50.0 V), 100 Ω maximum Zener impedance at 5 mA, and 0.1 µA maximum reverse leakage at 35.0 V. It serves as a precision voltage reference or overvoltage clamp in DC power rail regulation circuits.
For engineers reviewing the BZT52C47-7-F datasheet, BZT52C47-7-F pinout, BZT52C47-7-F application, or BZT52C47-7-F equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJA = 338 °C/W), low leakage (<0.1 µA @ 35 V), AEC-Q101 qualification for automotive use, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or line conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (ZZT ≤ 100 Ω @ 5 mA) for tight regulation in feedback loops.
Thermal performance is defined by junction-to-ambient (338 °C/W) and junction-to-lead (150 °C/W) resistances, enabling reliable operation up to +150°C storage and operating temperature. The cathode band polarity marking and matte tin-plated Alloy 42 leadframe support solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V nominal, 44.0–50.0 V range @ 5 mA - defines clamping threshold in protection circuits |
| Power Dissipation | 370 mW @ TA = +25°C - sets max continuous DC power before thermal derating |
| Zener Impedance | ≤100 Ω @ 1 kHz, 5 mA - ensures minimal voltage variation under dynamic load changes |
| Reverse Leakage | ≤0.1 µA @ VR = 35.0 V - guarantees low standby current in battery-powered systems |
| Thermal Resistance | RθJA = 338 °C/W - requires ≥1 inch² copper pad for full-rated power handling |
| Operating Temp | −65°C to +150°C - supports industrial and automotive under-hood environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking; dimensions: D = 1.40–1.70 mm, E = 2.55–2.85 mm, He = 3.55–3.85 mm; weight ≈ 0.010 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node in clamping configuration; forms reference ground for voltage regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated rail; maintains 47 V relative to anode during reverse bias operation |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight Zener voltage distribution (±5%) and repeatable breakdown behavior across production lots |
| 500 mW power rating at TL = +75°C | Supports higher transient power handling when mounted on thermally enhanced pads or heatsinks |
| AEC-Q101 qualification | Validates reliability for automotive body control modules, infotainment power supplies, and ADAS sensor interfaces |
| SOD123 package with matte tin plating | Ensures robust solder joint formation and compatibility with lead-free reflow profiles (J-STD-020 Level 1) |
| Halogen- and antimony-free "Green" compound | Meets IEC 61249-2-21 standards with Br+Cl <1500 ppm and Sb <1000 ppm - compliant for eco-sensitive designs |
Applications
| Automotive Power Rail Clamp | Industrial Sensor Reference |
|---|---|
Use Scenario: Clamping 12 V/24 V vehicle battery lines against load dump transients up to 60 V. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector in front-end power conditioning stage. Use Value: Limits peak rail voltage to 47 V ±5%, preventing damage to downstream LDOs and microcontrollers without adding active circuitry. |
Use Scenario: Providing stable 47 V reference for analog signal conditioning in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Passive voltage reference source for ADC biasing and op-amp gain-setting networks. Use Value: Delivers <0.1 µA leakage and ≤100 Ω dynamic impedance, minimizing reference drift and measurement error over −40°C to +85°C. |
| Consumer USB-C PD Protection | Telecom Line Interface Clamp |
Use Scenario: Secondary overvoltage clamp on 20 V USB-C Power Delivery bus after primary TVS suppression. IC Role / Device Role / Timing Role: Precision Zener element in cascaded protection scheme to refine clamping level. Use Value: Tight 44–50 V window complements 33 V primary TVS, reducing let-through energy to <10 mJ during 8/20 µs surges. |
Use Scenario: DC bias stabilization and surge limiting on -48 V telecom central office line cards. IC Role / Device Role / Timing Role: Zener clamp referenced to negative rail to hold common-mode voltage within transceiver limits. Use Value: Withstands −65°C to +150°C ambient and maintains <0.1 µA leakage at −35 V reverse bias, ensuring long-term stability in unheated cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ47ET1G | Same 47 V nominal, but SOD-123 package with 350 mW rating @ TA = +25°C and RθJA = 390 °C/W | Lower power handling and higher thermal resistance limit use in high-ambient or high-duty-cycle clamping | Select when cost sensitivity outweighs thermal margin; verify derating curves for target board layout |
| BZX84-C47 | SOT-23 package, 300 mW rating, 150 Ω Zener impedance @ 5 mA, no AEC-Q101 qualification | Not suitable for automotive or high-reliability industrial use; smaller footprint but less robust thermal path | Prefer for space-constrained consumer PCBs where AEC-Q101 is not required and 150 Ω impedance is acceptable |
Compared with MMSZ47ET1G and BZX84-C47, BZT52C47-7-F offers superior thermal performance (338 °C/W vs. 390/450 °C/W), higher power rating (370 mW), and automotive-grade qualification - making it optimal for mission-critical clamping where long-term stability and transient resilience are essential.
Availability
BZT52C47-7-F is available at Aetrix Electronics and suitable for automotive power rail clamping, industrial sensor reference design, and telecom line interface protection requiring stable component supply across extended temperature ranges and high-reliability manufacturing environments.
Supply support for BZT52C47-7-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, industry-qualified components for automotive, industrial, and computing markets.
BZT52C47-7-F belongs to the BZT52C series of general-purpose Zener diodes designed for medium-current voltage regulation and overvoltage protection in cost-sensitive, high-volume SMT applications.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C47-7-F guarantees ≤0.1 µA leakage?
The datasheet specifies IR ≤ 0.1 µA at VR = 35.0 V. This is the guaranteed maximum reverse leakage voltage point - not the absolute maximum rating. Exceeding 35 V increases leakage exponentially and risks entering unregulated breakdown region before reaching the 47 V Zener knee.
Can BZT52C47-7-F be used in place of a 5.1 V Zener diode for low-voltage logic protection?
No. BZT52C47-7-F has a nominal Zener voltage of 47 V and is unsuitable for 5.1 V logic-level circuits. Substituting it would result in catastrophic failure: the device remains non-conductive below ~44 V, leaving downstream 5 V ICs fully exposed to overvoltage events.
Does the "-7-F" suffix indicate tape-and-reel packaging and RoHS compliance?
Yes. The "-7-F" suffix denotes 3,000-unit tape-and-reel packaging (Type Number-7-F) and confirms full RoHS compliance per EU Directive 2011/65/EU, including lead-free plating and halogen-free molding compound meeting Diodes Incorporated's "Green" standard (Br+Cl <1500 ppm, Sb <1000 ppm).
How does the SOD123 package affect thermal performance compared to DO-35 or SOD-323?
SOD123 provides significantly better thermal dissipation than SOD-323 (RθJA ≈ 450 °C/W) due to larger copper pad area and lower junction-to-lead resistance (150 °C/W). Versus DO-35, it offers comparable RθJA but eliminates axial-leaded assembly constraints and improves SMT placement yield.
BZT52C47-7-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):
- 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
BZT52C47-7-F FAQ
1.How can I place an order for BZT52C47-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C47-7-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 BZT52C47-7-F reliable?
The price and inventory of BZT52C47-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C47-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C47-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C47-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C47-7-F?
BZT52C47-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C47-7-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 BZT52C47-7-F?
For technical support, including BZT52C47-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C47-7-F requirements.
6.How does Aetrix verify that BZT52C47-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C47-7-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 BZT52C47-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C47-7-F?
All BZT52C47-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C47-7-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 BZT52C47-7-F part is unused and in its original packaging.
Return procedure for BZT52C47-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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