My Inquiry
My Account
Diodes Incorporated BZT52HC4V7WF-7
- Part No.:
- BZT52HC4V7WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC4V7WF-7.pdf
- Description:
- DIODE ZENER 4.7V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,378
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52HC4V7WF-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 4.7 V (4.4–5.0 V range), 5 mA test current, 78 Ω dynamic impedance at IZT, and −3.5 to +0.2 mV/°C temperature coefficient. It operates in SOD123F package, delivers 375 mW power dissipation on standard FR-4 PCB, and is AEC-Q101 qualified for automotive electronics voltage regulation.
For engineers reviewing the BZT52HC4V7WF-7 datasheet, BZT52HC4V7WF-7 pinout, BZT52HC4V7WF-7 application, or BZT52HC4V7WF-7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (150 °C/W with 1 cm² cathode pad), reverse leakage (≤3 µA at 2 V), junction capacitance (300 pF @ 1 MHz), and RoHS-compliant "Green" construction.
Technical Context
This Zener diode functions as a precision voltage reference and overvoltage clamp in low-power analog and digital circuits. Its flat-lead SOD123F package enables high thermal efficiency and low-profile mounting, while the cathode-band polarity marking ensures unambiguous orientation during automated assembly.
The device exhibits a negative-to-slightly-positive temperature coefficient (−3.5 to +0.2 mV/°C) across its operating range, enabling stable regulation near room temperature. With 300 pF junction capacitance and 5 mA zener test current, it supports fast transient response in feedback loops and ESD-protected I/O conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.4–5.0 V @ 5 mA - defines clamping threshold for 3.3 V and 5 V rail protection |
| Zener Impedance (ZZT) | 78 Ω @ 5 mA - ensures minimal voltage shift under load variation in reference circuits |
| Power Dissipation (PD) | 375 mW (FR-4, min pad) / 830 mW (1 cm² cathode pad) - determines thermal layout requirements |
| Reverse Leakage (IR) | ≤3 µA @ 2 V - guarantees low quiescent current in battery-powered sensing nodes |
| Junction Capacitance (CT) | 300 pF @ 1 MHz, 0 V - impacts high-frequency noise filtering and signal integrity in data lines |
| Temperature Coefficient (TC) | −3.5 to +0.2 mV/°C @ 5 mA - enables predictable drift compensation in industrial temperature ranges |
| Forward Voltage (VF) | 0.9 V @ 10 mA - supports use as low-drop rectifier or logic-level shunt in dual-function designs |
Pinout & Package
Package: SOD123F (Type B), flat-lead surface-mount plastic case with cathode band marking; dimensions: 1.80 mm × 2.70 mm × 1.15 mm (L × W × H); weight ≈ 0.015 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential node in zener mode | Must be routed to ground or common return in shunt regulator configuration |
| Cathode | Current exit point in forward bias; higher-potential terminal in zener breakdown | Marked with band; connects to regulated voltage rail or input node requiring clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| "Green" halogen/antimony-free molding compound | UL 94V-0 flammability rating and <900 ppm Br/Cl, <1000 ppm Sb - meets global environmental compliance mandates |
| Low-profile SOD123F package | Height ≤1.15 mm - enables use in space-constrained modules like automotive ECUs and wearables |
| Matte tin annealed terminals | Solderable per MIL-STD-202, Method 208 - ensures robust reflow joint formation and long-term intermetallic stability |
Applications
| USB Port Protection | Automotive Sensor Reference |
|---|---|
Use Scenario: Clamping transient surges on USB 2.0 D+/D− lines during hot-plug events. IC Role / Device Role / Timing Role: Shunt voltage limiter placed between signal line and ground. Use Value: 300 pF capacitance avoids signal integrity degradation at 480 Mbps; 4.7 V threshold protects 3.3 V PHY transceivers. |
Use Scenario: Providing stable 4.7 V reference for analog sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference for ADC biasing and op-amp feedback networks. Use Value: −3.5 to +0.2 mV/°C TC minimizes offset drift across −40 to +125 °C ambient range. |
| Industrial PLC Input Conditioning | IoT Node Power Rail Clamp |
Use Scenario: Protecting 24 V DC digital input channels against field-wiring induced transients. IC Role / Device Role / Timing Role: Overvoltage clamp in series with current-limiting resistor. Use Value: 830 mW derated power handling (with 1 cm² pad) sustains repeated 100 V/100 ns spikes without failure. |
Use Scenario: Regulating and stabilizing 5 V supply rail in battery-backed BLE modules. IC Role / Device Role / Timing Role: Low-quiescent shunt regulator maintaining voltage during sleep-mode transitions. Use Value: ≤3 µA reverse leakage at 2 V preserves battery life over multi-year deployments. |
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 | Zener voltage 3.6 V (3.4–3.8 V), 95 Ω ZZT, 200 mW PD, SOT-23 package | Lower voltage, smaller package, lower power - suited for portable logic rail clamping | Select when board space is constrained and 3.6 V regulation suffices |
| BZX84-C4V7 | Zener voltage 4.7 V (4.4–5.0 V), 95 Ω ZZT, 300 mW PD, SOT-23 package, no AEC-Q101 | Same voltage range but lower power rating and non-automotive qualification | Acceptable for commercial-grade consumer products where AEC-Q101 is not required |
Compared with MMBZ5225BS-7-F and BZX84-C4V7, BZT52HC4V7WF-7 offers higher power handling (830 mW), AEC-Q101 qualification, and superior thermal performance in SOD123F-making it optimal for automotive and industrial environments demanding long-term reliability under thermal stress.
Availability
BZT52HC4V7WF-7 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and IoT sensor node voltage regulation requiring stable component supply and full traceability.
Supply support for BZT52HC4V7WF-7 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.
This device belongs to the BZT52HC series of AEC-Q101-qualified Zener diodes engineered for precision voltage regulation and transient suppression in harsh-environment electronics.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZT52HC4V7WF-7 has a nominal zener voltage of 4.7 V with a guaranteed range of 4.4–5.0 V at 5 mA test current. Its breakdown is sharp and repeatable within this range; operation above 5.0 V risks exceeding specified power limits unless current is strictly limited by external series resistance.
Does this part support reflow soldering per JEDEC J-STD-020?
Yes - the SOD123F package is rated for moisture sensitivity level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH and is compatible with standard lead-free reflow profiles (peak 260 °C, 20–40 sec above 217 °C) without baking.
How does the temperature coefficient affect regulation accuracy over −40°C to +125°C?
With a TC of −3.5 to +0.2 mV/°C, the zener voltage shifts approximately ±0.26 V across that full range. For example, at 125 °C, VZ may drop ~0.26 V from its 25 °C value - a critical factor in high-accuracy references but acceptable for general-purpose clamping.
Can this diode replace a 1N4732A in existing designs?
No - the 1N4732A is a through-hole DO-41 device rated for 400 mW and 4.7 V, whereas BZT52HC4V7WF-7 is surface-mount SOD123F with different thermal characteristics, footprint, and AEC-Q101 qualification. Direct replacement requires PCB layout revision and thermal validation.
BZT52HC4V7WF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±6.38%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 78 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52HC4V7WF-7 FAQ
1.How can I place an order for BZT52HC4V7WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC4V7WF-7 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 BZT52HC4V7WF-7 reliable?
The price and inventory of BZT52HC4V7WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC4V7WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC4V7WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC4V7WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC4V7WF-7?
BZT52HC4V7WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC4V7WF-7 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 BZT52HC4V7WF-7?
For technical support, including BZT52HC4V7WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC4V7WF-7 requirements.
6.How does Aetrix verify that BZT52HC4V7WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC4V7WF-7 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 BZT52HC4V7WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC4V7WF-7?
All BZT52HC4V7WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC4V7WF-7, 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 BZT52HC4V7WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC4V7WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC4V7WF-7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
