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Diodes Incorporated BZT52HC11WF-7
- Part No.:
- BZT52HC11WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC11WF-7.pdf
- Description:
- DIODE ZENER 11V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,866
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Product details
Overview
BZT52HC11WF-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 11.0 V (min 10.4 V, max 11.6 V), 5 mA test current, 10 Ω maximum zener impedance at IZT, and ±0.1 µA maximum reverse leakage at 8 V. It operates in SOD123F package and is AEC-Q101 qualified for automotive power rail regulation and voltage reference applications.
For engineers reviewing the BZT52HC11WF-7 datasheet, BZT52HC11WF-7 pinout, BZT52HC11WF-7 application, or BZT52HC11WF-7 equivalent, key selection criteria include zener voltage tolerance (±5.0%), low thermal resistance (150 °C/W with 1 cm² cathode pad), temperature coefficient (+5.4 to +9.0 mV/°C), and AEC-Q101 qualification for under-hood electronics.
Technical Context
This Zener diode provides precise voltage regulation via controlled reverse-breakdown conduction. Its 11.0 V nominal zener voltage is specified at 5 mA test current, with tight 10.4–11.6 V range and low dynamic impedance (10 Ω) ensuring stable clamping under varying load conditions.
The device uses a planar epitaxial construction in SOD123F package with matte tin–annealed copper alloy leadframe. Thermal performance is defined for two mounting conditions: 330 °C/W on minimal FR-4 pad and 150 °C/W with 1 cm² cathode thermal pad - critical for sustained 375 mW (derated) or 830 mW (enhanced layout) operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4–11.6 V @ IZT = 5 mA - ensures ±5.0% regulation window for 11 V reference designs |
| Zener Impedance (ZZT) | 10 Ω max @ 5 mA - enables low-voltage deviation under transient current changes |
| Reverse Leakage (IR) | 0.1 µA max @ VR = 8 V - guarantees minimal quiescent current in standby circuits |
| Power Dissipation | 830 mW with 1 cm² cathode pad - supports higher continuous clamping in thermally optimized layouts |
| Thermal Resistance (RθJA) | 150 °C/W with enhanced pad - allows operation up to +150 °C ambient when properly mounted |
| Temperature Coefficient | +5.4 to +9.0 mV/°C @ 5 mA - positive drift enables predictable compensation in temp-stable references |
| Capacitance (CT) | 85 pF max @ f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in analog signal paths |
Pinout & Package
Package: SOD123F (Type B), flat-lead surface-mount package with cathode band marking; dimensions: L = 0.35–0.85 mm, D = 1.70–1.90 mm, E = 2.60–2.80 mm, He = 3.30–3.70 mm, weight ≈ 0.015 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; defines breakdown polarity and grounding reference point |
| Cathode | Zener breakdown terminal / regulated output node | Marked with band; connects to supply rail being clamped or referenced; carries full zener current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard |
| Green compound packaging | Halogen- and antimony-free molding compound (Br+Cl <1500 ppm, Sb <1000 ppm) meeting RoHS 2 |
| Low-profile SOD123F | Height ≤0.85 mm enables use in space-constrained PCBs while maintaining 830 mW thermal capability |
| Cathode-band polarity marking | Unambiguous visual identification reduces assembly errors in automated pick-and-place and manual rework |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping of LIN bus transceiver supply rails exposed to load dump transients. IC Role / Device Role / Timing Role: Zener clamp protecting 12 V rail from >20 V spikes during alternator regulation failure. Use Value: 11 V breakdown with 10 Ω impedance limits peak clamped voltage to ≤12.5 V at 100 mA surge, preserving transceiver integrity. |
Use Scenario: Precision 11 V reference for 16-bit ADC front-end in pressure sensor module. IC Role / Device Role / Timing Role: Stable shunt reference providing excitation and scaling voltage for ratiometric measurement. Use Value: ±5.0% VZ tolerance and +5.4–+9.0 mV/°C TC enable <0.1% full-scale error over −40 to +125 °C. |
| Consumer Power Adapter Feedback | Medical Infusion Pump Power Monitoring |
Use Scenario: Secondary-side voltage sensing in flyback converter feedback loop for constant-voltage regulation. IC Role / Device Role / Timing Role: Zener reference feeding optocoupler LED to close isolation barrier control loop. Use Value: Low 0.1 µA leakage at 8 V minimizes bias current error, improving regulation accuracy to ±1.5% across line/load. |
Use Scenario: Overvoltage detection on 12 V main battery input before DC-DC conversion to logic rails. IC Role / Device Role / Timing Role: Fail-safe clamp triggering shutdown circuit if input exceeds safe threshold. Use Value: AEC-Q101 qualification ensures long-term stability in safety-critical medical environments with 150 °C max operating temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5242BT1G | 12 V nominal (11.4–12.7 V), 90 Ω ZZT, SOD-123 package, no AEC-Q101 rating | Higher voltage tolerance (±5.3%) and higher impedance reduce regulation precision in reference circuits | Select only for non-automotive cost-sensitive applications where 12 V nominal is acceptable |
| BZX84-C11 | 11 V nominal (10.4–11.6 V), 20 Ω ZZT, SOT-23 package, AEC-Q101 qualified | SOT-23 footprint requires different layout; higher 20 Ω impedance increases voltage droop under load | Prefer when board space permits SOT-23 and thermal derating margin is available |
Compared with MMSZ5242BT1G and BZX84-C11, BZT52HC11WF-7 delivers superior regulation stability (10 Ω vs. 20–90 Ω ZZT) and automotive-grade reliability in the lowest-profile SOD123F package, making it optimal for space- and performance-constrained 11 V reference and clamp roles.
Availability
BZT52HC11WF-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, consumer power adapter feedback loops, and medical infusion pump power monitoring requiring stable component supply and AEC-Q101 compliance.
Supply support for BZT52HC11WF-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 the Americas.
The BZT52HC series targets high-reliability voltage regulation in automotive and industrial applications, emphasizing AEC-Q101 qualification, green packaging, and thermal robustness in compact SOD123F form factor.
FAQ
What is the maximum power dissipation of BZT52HC11WF-7 under standard PCB mounting?
BZT52HC11WF-7 delivers 375 mW maximum power dissipation when mounted on an FR-4 PCB using Diodes Incorporated's minimum recommended pad layout. This rating assumes RθJA = 330 °C/W and ambient temperature ≤ +75 °C per derating curve in DS36891 Rev. 4-2.
Does BZT52HC11WF-7 have a specified forward voltage?
Yes - forward voltage is specified as 0.9 V maximum at 10 mA forward current (IF). This value reflects typical silicon diode conduction behavior and is relevant for reverse-polarity protection or dual-use configurations where forward conduction may occur.
How is polarity identified on the BZT52HC11WF-7 package?
Polarity is marked by a visible cathode band on the SOD123F package body. The banded end corresponds to the cathode terminal; the unmarked end is the anode. This marking aligns with JEDEC-standard orientation and is verified in the mechanical drawings of DS36891.
Is BZT52HC11WF-7 suitable for use in life support equipment?
No - Diodes Incorporated explicitly states that its products, including BZT52HC11WF-7, are not authorized for use in life support devices or systems without express written approval from the CEO. This part lacks the specific validation required for such safety-critical applications.
BZT52HC11WF-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):
- 11 V
- Tolerance:
- ±5.45%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
BZT52HC11WF-7 FAQ
1.How can I place an order for BZT52HC11WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC11WF-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 BZT52HC11WF-7 reliable?
The price and inventory of BZT52HC11WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC11WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC11WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC11WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC11WF-7?
BZT52HC11WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC11WF-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 BZT52HC11WF-7?
For technical support, including BZT52HC11WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC11WF-7 requirements.
6.How does Aetrix verify that BZT52HC11WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC11WF-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 BZT52HC11WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC11WF-7?
All BZT52HC11WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC11WF-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 BZT52HC11WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC11WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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