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Diodes Incorporated BZT52HC2V7WF-7
- Part No.:
- BZT52HC2V7WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC2V7WF-7.pdf
- Description:
- DIODE ZENER 2.7V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,432
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Product details
Overview
BZT52HC2V7WF-7 from Diodes Incorporated is a surface-mount Zener diode with nominal 2.7 V zener voltage (2.5–2.9 V range), 5 mA test current, 83 Ω dynamic impedance at IZT, and −3.5 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 voltage regulation and ESD protection circuits.
For engineers reviewing the BZT52HC2V7WF-7 datasheet, BZT52HC2V7WF-7 pinout, BZT52HC2V7WF-7 application, or BZT52HC2V7WF-7 equivalent, key selection criteria include its low-voltage zener tolerance, cathode-band polarity marking, thermal resistance of 330 °C/W under standard layout, and compliance with halogen-free, RoHS-compliant "Green" manufacturing standards.
Technical Context
This Zener diode functions as a precision voltage reference and overvoltage clamp in low-power analog and digital supply rails. Its −3.5 mV/°C temperature coefficient ensures predictable drift across −65 °C to +150 °C operating range, and its 450 pF capacitance at 0 V bias supports stable operation in noise-sensitive signal conditioning paths.
The device uses a planar silicon junction structure optimized for low leakage and repeatable breakdown behavior. With 20 µA maximum reverse current at 1 V reverse bias and 1 mA zener knee current, it provides sharp turn-on characteristics suitable for voltage monitoring and threshold detection in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.5–2.9 V @ 5 mA - defines clamping threshold for 2.7 V nominal rail protection |
| Zener Impedance (ZZT) | 83 Ω @ 5 mA - determines voltage deviation under load variation in regulation circuits |
| Power Dissipation (PD) | 375 mW on FR-4 PCB - sets max continuous power handling without derating at 25 °C ambient |
| Reverse Current (IR) | 20 µA @ 1 V - indicates low leakage for standby-mode voltage sensing applications |
| Temperature Coefficient (TC) | −3.5 mV/°C @ 5 mA - enables predictable zener voltage shift over temperature for calibration-aware designs |
| Total Capacitance (CT) | 450 pF @ 1 MHz, 0 V - impacts high-frequency noise filtering capability in signal path clamping |
| Thermal Resistance (RθJA) | 330 °C/W - defines junction-to-ambient rise per watt on minimal pad layout per Diodes Inc. guidelines |
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 | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated rail; forms reference ground for zener biasing |
| Cathode | Zener breakdown terminal / voltage clamp output | Marked with band; connected to protected node to sink excess current above 2.7 V threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Halogen- and antimony-free "Green" compound | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - supports environmental compliance in Tier-1 automotive BOMs |
| Low-profile SOD123F package | Height ≤1.15 mm - enables use in space-constrained modules like ADAS sensor housings and infotainment PCBs |
| Cathode band polarity marking | Unambiguous visual identification - reduces assembly errors during automated placement and manual rework |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 2.7 V reference for LIN transceiver bias and microcontroller I/O protection. IC Role / Device Role: Low-voltage zener clamp protecting MCU GPIO against load-dump transients. Use Value: Maintains 2.7 V clamping window with ±0.2 V tolerance across −40 °C to +125 °C, preventing false wake-up events. |
Use Scenario: Stabilizing excitation voltage for 2-wire RTD bridges in process control transmitters. IC Role / Device Role: Precision shunt reference providing stable bias for Wheatstone bridge circuitry. Use Value: −3.5 mV/°C TC enables predictable compensation in firmware-based linearization algorithms. |
| USB-C Power Delivery Monitoring | Medical Wearable Battery Management |
Use Scenario: Clamping CC line voltage during USB PD negotiation to prevent PHY damage. IC Role / Device Role: Transient voltage suppressor on 2.7 V logic-level communication bus. Use Value: 450 pF capacitance avoids signal integrity degradation while limiting overshoot to <3.0 V peak. |
Use Scenario: Overvoltage protection for coin-cell-supplied analog front-end in pulse oximeter ASIC. IC Role / Device Role: Low-leakage (20 µA @ 1 V) zener safeguarding ADC input stage. Use Value: Enables >10-year shelf life by minimizing standby current drain in ultra-low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | 2.5 V nominal, 100 Ω ZZT, SOT-23 package, 350 mW PD | Higher impedance and smaller footprint; less thermal margin on dense PCBs | Prefer when board space is constrained and 2.5 V tighter tolerance is acceptable |
| BZX84-C2V7 | 2.7 V nominal, 100 Ω ZZT, SOT-23, 300 mW PD, no AEC-Q101 qualification | Lacks automotive qualification and has higher thermal resistance (400 °C/W) | Select only for cost-sensitive consumer electronics where AEC-Q101 is not required |
Compared with MMBZ5223BS-7-F and BZX84-C2V7, BZT52HC2V7WF-7 offers superior thermal performance (330 °C/W), tighter zener voltage spread (±0.2 V), and automotive-grade reliability-making it optimal for safety-critical voltage supervision in harsh environments.
Availability
BZT52HC2V7WF-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioners, USB-C power delivery monitors, and medical wearable battery management systems requiring stable component supply and long-term lifecycle support.
Supply support for BZT52HC2V7WF-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 and manufacturing operations across Asia and the Americas.
The BZT52HC series belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for automotive voltage regulation, ESD protection, and precision reference applications demanding high reliability and environmental compliance.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZT52HC2V7WF-7 exhibits a guaranteed zener breakdown between 2.5 V and 2.9 V at 5 mA test current. Its absolute maximum reverse voltage rating is not specified separately; operation beyond 2.9 V at rated current initiates controlled conduction. Exceeding 3.0 V continuously risks thermal runaway unless power dissipation remains within 375 mW limits.
Is this part suitable for bidirectional ESD protection?
No. The BZT52HC2V7WF-7 is a unidirectional Zener diode with cathode-band polarity and forward conduction only in one direction. It provides effective clamping for positive transients on the cathode side but lacks symmetric breakdown in reverse bias. For bidirectional ESD protection, a dedicated TVS diode such as the D24Z2.7M is required.
How does the SOD123F package compare thermally to SOD-123?
The SOD123F (Type B) used in BZT52HC2V7WF-7 features a flat lead design that improves thermal conduction versus standard SOD-123. Its RθJA is 330 °C/W on minimal pads (vs. ~400 °C/W for legacy SOD-123), and drops to 150 °C/W with 1 cm² cathode pad-enabling higher sustained power in compact layouts without thermal vias.
Does this Zener require external current-limiting resistance in all applications?
Yes. Like all Zener diodes, BZT52HC2V7WF-7 must be biased with a series resistor to limit current to ≤5 mA for stable regulation or ≤250 mA peak for transient clamping. Without current limiting, excessive power dissipation will cause thermal failure. Typical values range from 1 kΩ (for 5 V supply) to 10 kΩ (for 3.3 V supply), calculated using (VIN − 2.7 V)/IZ.
BZT52HC2V7WF-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):
- 2.7 V
- Tolerance:
- ±7.41%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 83 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 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
BZT52HC2V7WF-7 FAQ
1.How can I place an order for BZT52HC2V7WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC2V7WF-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 BZT52HC2V7WF-7 reliable?
The price and inventory of BZT52HC2V7WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC2V7WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC2V7WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC2V7WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC2V7WF-7?
BZT52HC2V7WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC2V7WF-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 BZT52HC2V7WF-7?
For technical support, including BZT52HC2V7WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC2V7WF-7 requirements.
6.How does Aetrix verify that BZT52HC2V7WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC2V7WF-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 BZT52HC2V7WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC2V7WF-7?
All BZT52HC2V7WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC2V7WF-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 BZT52HC2V7WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC2V7WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC2V7WF-7 Tags
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