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Diodes Incorporated BZT52C4V7-7-F
- Part No.:
- BZT52C4V7-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C4V7-7-F.pdf
- Description:
- DIODE ZENER 4.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:112,283
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Product details
Overview
BZT52C4V7-7-F from Diodes Incorporated is a surface-mount 4.7 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with 80 Ω maximum Zener impedance at 5 mA test current and ±5% voltage tolerance (4.4–5.0 V). It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the BZT52C4V7-7-F datasheet, BZT52C4V7-7-F pinout, BZT52C4V7-7-F application, or BZT52C4V7-7-F equivalent, key selection criteria include its 4.7 V nominal Zener voltage, 3.0 µA reverse leakage at 2.0 V, -3.5 mV/°C temperature coefficient, SOD123 footprint compatibility, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage regulation under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (80 Ω @ 1 kHz), while the cathode-band polarity marking enables unambiguous PCB orientation during automated assembly.
The device exhibits a negative temperature coefficient of -3.5 mV/°C, meaning its Zener voltage decreases linearly with rising junction temperature. Thermal resistance values (RθJA = 338 °C/W, RθJL = 150 °C/W) define derating behavior on FR-4 boards with standard copper pad layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7 V nominal, 4.4–5.0 V range at 5 mA - defines regulated output voltage in shunt regulator or reference applications |
| Power Dissipation (PD) | 370 mW at TA = +25°C - sets maximum continuous power handling on standard PCB without forced cooling |
| Zener Impedance (ZZT) | 80 Ω max @ 1 kHz, 5 mA - determines regulation stability under varying load or ripple current |
| Reverse Leakage (IR) | 3.0 µA max @ VR = 2.0 V - limits standby current in low-power voltage detection circuits |
| Temperature Coefficient | -3.5 mV/°C - quantifies voltage drift per degree Celsius, critical for temperature-sensitive references |
| Package | SOD123 - 2-pin surface-mount outline with 2.65 mm body width and 3.65 mm length, compatible with 0805-class pick-and-place |
Pinout & Package
Package: SOD123 - molded plastic case, UL 94V-0 flammability rating, matte tin-plated alloy 42 leadframe, cathode band marking, 0.010 g weight.
| 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 | Reverse-biased Zener terminal / voltage regulation node | Connected to input supply or signal node requiring clamping; voltage develops across this terminal relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight Zener voltage distribution and repeatable breakdown characteristics across production lots |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment power rails and sensor interface protection |
| Lead-free & halogen-free | Meets RoHS 2 (2011/65/EU) and green compound requirements (<900 ppm Br/Cl, <1000 ppm Sb) |
| Moisture sensitivity Level 1 | Eliminates bake requirement prior to reflow, enabling direct use in high-volume SMT lines |
Applications
| Overvoltage Protection in Sensor Interfaces | Low-Power Voltage Reference for ADC Biasing |
|---|---|
Use Scenario: Protects 3.3 V I²C sensor nodes from transient surges up to 12 V during ESD events or supply coupling. IC Role / Device Role / Timing Role: Shunt clamp that conducts excess current above 4.7 V, limiting voltage seen by downstream logic inputs. Use Value: Prevents latch-up or damage to microcontroller GPIO pins while maintaining signal integrity below Zener threshold. |
Use Scenario: Provides stable 4.7 V reference for biasing op-amp input stages in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Passive voltage reference source with predictable TC and low dynamic impedance for ratiometric accuracy. Use Value: Enables sub-1% absolute voltage accuracy over -40°C to +85°C without active regulation circuitry. |
| Automotive Body Control Module Power Monitoring | Industrial PLC Input Signal Conditioning |
Use Scenario: Monitors 5 V rail integrity in BCMs using comparator-based undervoltage detection with hysteresis. IC Role / Device Role / Timing Role: Precision Zener element setting trip point for supervisor IC thresholds. Use Value: Supports AEC-Q101-compliant system-level diagnostics without external trimming or calibration. |
Use Scenario: Clamps 24 V industrial analog inputs to protect 5 V ADC front-ends from field-wiring transients. IC Role / Device Role / Timing Role: Fast-response overvoltage limiter placed before RC filter network in signal chain. Use Value: Limits peak voltage to ≤5.0 V with <3 µA leakage at 2 V, preserving measurement resolution and linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5225BS-7-F | Same 4.7 V Zener voltage but SOT-23 package; higher 200 mW PD at TA = +25°C; 100 Ω ZZT | Requires different PCB footprint and has higher thermal resistance (RθJA = 350 °C/W); less suitable for space-constrained SOD123 layouts | Select when board layout allows SOT-23 and higher power margin is needed; avoid if SOD123 mechanical fit is mandatory |
| BZX84-C4V7 | 4.7 V Zener in SOT-23; 350 mW PD; 90 Ω ZZT; no AEC-Q101 qualification | Lacks automotive qualification and has wider voltage tolerance (±5% vs ±4.3%); not recommended for safety-critical modules | Acceptable for commercial-grade consumer devices where cost is prioritized over automotive reliability testing |
Compared with MMBZ5225BS-7-F and BZX84-C4V7, BZT52C4V7-7-F offers superior thermal performance in SOD123 form factor, guaranteed AEC-Q101 compliance, and tighter Zener voltage distribution-making it optimal for automotive and industrial applications demanding long-term stability and traceable qualification.
Availability
BZT52C4V7-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, battery-powered instrumentation, and medical diagnostic equipment requiring stable component supply and full RoHS/Green compliance.
Supply support for BZT52C4V7-7-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 components for automotive, industrial, and computing markets.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-effective, space-efficient voltage regulation and protection in high-volume surface-mount applications.
FAQ
What is the maximum reverse leakage current for BZT52C4V7-7-F at 2.0 V?
The maximum reverse leakage current (IR) is 3.0 µA at VR = 2.0 V and TA = +25°C, as specified in the Electrical Characteristics table. This value ensures minimal quiescent current draw in voltage-monitoring circuits where the diode remains below breakdown during normal operation.
Is BZT52C4V7-7-F suitable for automotive applications?
Yes-BZT52C4V7-7-F is qualified to AEC-Q101 standards, confirming its reliability for automotive use. It meets stringent requirements for temperature cycling, humidity exposure, and mechanical shock, making it appropriate for engine control units, lighting modules, and ADAS sensor interfaces.
How does the temperature coefficient affect voltage regulation accuracy?
With a temperature coefficient of -3.5 mV/°C, the Zener voltage decreases by approximately 0.35% per 10°C rise in junction temperature. For applications requiring stable reference voltage across -40°C to +125°C, this drift must be compensated in system-level calibration or design margins.
What is the recommended PCB pad layout for SOD123 mounting?
The manufacturer specifies a suggested pad layout with X = 0.900 mm, X1 = 4.050 mm, and Y = 0.950 mm (all dimensions in mm). These dimensions ensure reliable solder joint formation, thermal transfer, and mechanical stability during reflow and board flexure, per Diodes' package outline documentation.
BZT52C4V7-7-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):
- 4.7 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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
BZT52C4V7-7-F FAQ
1.How can I place an order for BZT52C4V7-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C4V7-7-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 BZT52C4V7-7-F reliable?
The price and inventory of BZT52C4V7-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C4V7-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C4V7-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C4V7-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C4V7-7-F?
BZT52C4V7-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C4V7-7-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 BZT52C4V7-7-F?
For technical support, including BZT52C4V7-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C4V7-7-F requirements.
6.How does Aetrix verify that BZT52C4V7-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C4V7-7-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 BZT52C4V7-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C4V7-7-F?
All BZT52C4V7-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C4V7-7-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 BZT52C4V7-7-F part is unused and in its original packaging.
Return procedure for BZT52C4V7-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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