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Diodes Incorporated BZT52HC5V1WF-7
- Part No.:
- BZT52HC5V1WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC5V1WF-7.pdf
- Description:
- DIODE ZENER 5.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:54,801
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Product details
Overview
BZT52HC5V1WF-7 from Diodes Incorporated is a surface-mount 5.1 V Zener diode in SOD123F package, rated for 375 mW power dissipation on standard FR-4 PCB and 830 mW with enhanced thermal pad, with 60 Ω dynamic impedance at 5 mA test current and ±2% zener voltage tolerance (4.8–5.4 V). It serves as precision voltage reference and overvoltage clamp in low-power analog supply rails.
For engineers reviewing the BZT52HC5V1WF-7 datasheet, BZT52HC5V1WF-7 pinout, BZT52HC5V1WF-7 application, or BZT52HC5V1WF-7 equivalent, key selection criteria include zener voltage accuracy, low dynamic impedance, AEC-Q101 qualification for automotive environments, thermal performance under derated ambient conditions, and compatibility with automated SMT assembly using matte tin–plated terminals.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its cathode–anode terminals. Its −2.7 to +1.2 mV/°C temperature coefficient ensures predictable drift over −65°C to +150°C operating range, and 300 pF capacitance at 1 MHz supports use in DC-biased regulation-not high-frequency signal paths.
The device uses a planar epitaxial construction with cathode band polarity marking and is optimized for low-profile mounting. Thermal resistance varies significantly-330°C/W on minimal pad layout versus 150°C/W with 1 cm² cathode pad-making PCB layout a critical design factor for power handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 4.8–5.4 V at 5 mA; enables stable 5.1 V reference within ±2% for 3.3 V/5 V rail monitoring |
| Zener Impedance | 60 Ω at 5 mA; ensures <100 mV output variation under 6 mA load step |
| Power Dissipation | 375 mW (FR-4, min pad); 830 mW (FR-4, 1 cm² cathode pad); defines max continuous clamp energy |
| Reverse Leakage | ≤2 µA at 2 V; guarantees negligible quiescent current in standby voltage-sense circuits |
| Temp Coefficient | −2.7 to +1.2 mV/°C at 5 mA; allows ±15 mV drift over −40°C to +85°C industrial range |
| Capacitance | 300 pF at 1 MHz, 0 V; limits use to DC/low-frequency regulation, not RF bypass |
| Forward Voltage | 0.9 V at 10 mA; supports bidirectional ESD protection when paired with series resistor |
Pinout & Package
Package: SOD123F (Type B), flat lead, low-profile surface-mount plastic case with cathode band marking. Weight: 0.015 g. UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener breakdown reference node | Connected to lower-potential side of regulated node; determines polarity of clamping action |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; connected to higher-potential rail; sets regulated voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock |
| Green compound packaging | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) per JEDEC J-STD-70 |
| Matte tin annealed terminals | Solderable per MIL-STD-202 Method 208; compatible with lead-free reflow profiles up to 260°C peak |
| Moisture sensitivity Level 1 | No floor life limitation; safe for standard SMT assembly without dry-pack or baking |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC input scaling in door module power management. IC Role / Device Role / Timing Role: Zener clamp providing stable 5.1 V reference to buffer analog sensor outputs before digitization. Use Value: Maintains ±0.1% reference stability over temperature, enabling <12-bit effective resolution despite wide ambient swings. |
Use Scenario: Overvoltage protection for 4–20 mA transmitter loop power supply. IC Role / Device Role / Timing Role: Shunt regulator clamping transient surges above 5.4 V to protect op-amp front-end. Use Value: Limits fault energy to <2 mJ during 100 V/1 µs surge, preventing latch-up in precision instrumentation amplifiers. |
| Consumer USB-C Power Delivery Monitor | Medical Portable Diagnostic Device |
Use Scenario: Reference voltage source for CC line voltage detection in USB PD sink controller. IC Role / Device Role / Timing Role: Precision 5.1 V threshold detector ensuring accurate PD contract negotiation. Use Value: Enables ±10 mV detection window at 5 V, meeting USB-IF compliance for VCONN and CC logic level validation. |
Use Scenario: Low-power voltage supervisor for battery-backed real-time clock circuitry. IC Role / Device Role / Timing Role: Standby-mode zener reference maintaining RTC accuracy during main supply brownout. Use Value: Draws only 0.5 µA at 3 V bias, extending coin-cell life beyond 5 years while holding ±0.5% regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5231B-7-F | Same 5.1 V nominal, but 200 mW PD, 17 Ω ZZT, SOD-123 package (non-AEC-Q101) | Limited to commercial-grade consumer products; unsuitable for automotive underhood use | Select when cost-sensitive, non-automotive designs require lower impedance and accept reduced power margin |
| BZX84-C5V1 | 5.1 V, 250 mW, 60 Ω ZZT, SOT-23 package; no AEC-Q101 qualification | Higher board space usage due to larger footprint; lacks automotive reliability validation | Choose for legacy SOT-23 layouts where rework to SOD123F is impractical and AEC-Q101 is not required |
Compared with MMSZ5231B-7-F and BZX84-C5V1, BZT52HC5V1WF-7 delivers higher power capability (830 mW with thermal pad), AEC-Q101 qualification, and identical dynamic impedance-making it the sole option for thermally constrained automotive or industrial applications requiring long-term reliability.
Availability
BZT52HC5V1WF-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial 4–20 mA transmitters, USB-C power delivery monitors, and medical portable diagnostic devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT52HC5V1WF-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52HC series belongs to Diodes' AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive and industrial voltage regulation where reliability, thermal robustness, and halogen-free compliance are mandatory.
FAQ
What is the maximum allowable reverse voltage before breakdown for BZT52HC5V1WF-7?
The device exhibits sharp reverse breakdown at 4.8–5.4 V when tested at 5 mA (IZT). Below 4.8 V, reverse leakage remains ≤2 µA at 2 V; operation below breakdown is intended for leakage-critical biasing, not regulation. Exceeding 5.4 V risks uncontrolled current rise unless externally limited.
Can BZT52HC5V1WF-7 be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and mismatched breakdown voltages, causing current hogging and thermal runaway when paralleled. For >830 mW requirements, use a single higher-power Zener or switch to active regulation with a shunt reference IC like TL431.
Is the SOD123F package compatible with standard 0805 reflow profiles?
Yes-the SOD123F footprint aligns with IPC-7351B SOIC-123 recommendations and withstands JEDEC J-STD-020 Class 3A reflow (peak 260°C, 20–40 sec). Matte tin annealed terminals ensure wetting on ENIG and OSP finishes without voiding or dewetting.
Does the −2.7 to +1.2 mV/°C temperature coefficient apply across the full operating range?
Yes-the coefficient is specified at IZT = 5 mA and is valid from −65°C to +150°C. However, actual drift is nonlinear near extremes; typical deviation is ±5 mV from nominal over −40°C to +125°C, verified per AEC-Q101 thermal characterization testing.
BZT52HC5V1WF-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):
- 5.1 V
- Tolerance:
- ±5.88%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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
BZT52HC5V1WF-7 FAQ
1.How can I place an order for BZT52HC5V1WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC5V1WF-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 BZT52HC5V1WF-7 reliable?
The price and inventory of BZT52HC5V1WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC5V1WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC5V1WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC5V1WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC5V1WF-7?
BZT52HC5V1WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC5V1WF-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 BZT52HC5V1WF-7?
For technical support, including BZT52HC5V1WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC5V1WF-7 requirements.
6.How does Aetrix verify that BZT52HC5V1WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC5V1WF-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 BZT52HC5V1WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC5V1WF-7?
All BZT52HC5V1WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC5V1WF-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 BZT52HC5V1WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC5V1WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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