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Diodes Incorporated BZT52C9V1-7-F
- Part No.:
- BZT52C9V1-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C9V1-7-F.pdf
- Description:
- DIODE ZENER 9.1V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:1,309,319
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Product details
Overview
BZT52C9V1-7-F from Diodes Incorporated is a surface-mount 9.1 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with 15 Ω typical Zener impedance at 5 mA test current and ±5% voltage tolerance - used for precision voltage regulation and overvoltage protection in DC power rails of industrial control modules.
For engineers reviewing the BZT52C9V1-7-F datasheet, BZT52C9V1-7-F pinout, BZT52C9V1-7-F application, or BZT52C9V1-7-F equivalent, key selection criteria include Zener voltage accuracy (8.5–9.6 V), low leakage (<0.5 µA @ 7.0 V), temperature coefficient (+3.8 mV/°C), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent Zener characteristics and low dynamic impedance (15 Ω @ 5 mA) across production lots.
Designed for medium-current regulation, it delivers predictable clamping behavior with 1.0 mA knee current (IZK) and 6.0 V nominal knee voltage (VZK), enabling reliable operation in both shunt regulator and transient suppression configurations without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.5–9.6 V range @ 5 mA - defines precise clamping threshold for 9 V rail stabilization |
| Power Dissipation | 500 mW @ TL = +75°C - supports sustained operation on thermally anchored PCB pads |
| Zener Impedance (ZZT) | 15 Ω @ 5 mA - ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | <0.5 µA @ VR = 7.0 V - guarantees negligible quiescent current in standby regulation circuits |
| Temperature Coefficient | +3.8 mV/°C - enables predictable drift compensation in temperature-sensitive references |
| Knee Current (IZK) | 1.0 mA - establishes minimum operating current for stable Zener conduction onset |
| Package | SOD123 - 2-pin surface-mount outline with cathode band marking and 0.010 g mass |
Pinout & Package
Package: SOD123 - molded plastic case, UL 94V-0 flammability rating, matte tin-plated alloy 42 leadframe, cathode indicated by band marking, weight ≈ 0.010 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; forms reference ground for shunt regulation |
| Cathode | Reverse breakdown terminal / Zener voltage output node | Connected to input rail; maintains fixed 9.1 V drop relative to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight parameter distribution and long-term stability of Zener voltage across temperature and life cycles |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring high-reliability discrete components |
| Lead-free & RoHS-compliant | Fully compliant with EU Directive 2011/65/EU and halogen/antimony-free "Green" specification (<900 ppm Br/Cl, <1000 ppm Sb) |
| Moisture Sensitivity Level 1 | Enables direct placement without baking; compatible with standard reflow profiles per J-STD-020 |
Applications
| Industrial Power Monitoring | Automotive ECU Reference |
|---|---|
Use Scenario: Voltage supervision circuit in programmable logic controller (PLC) I/O modules monitoring 9 V auxiliary supply. IC Role / Device Role / Timing Role: Shunt regulator providing stable 9.1 V reference for ADC input scaling and comparator thresholds. Use Value: Maintains ±1% reference accuracy over –40°C to +85°C ambient, reducing calibration drift in field-deployed equipment. |
Use Scenario: Overvoltage clamp protecting microcontroller reset pin in body control module powered from 12 V battery rail. IC Role / Device Role / Timing Role: Transient suppressor limiting reset line voltage to ≤9.6 V during load dump events. Use Value: Withstands 500 mW peak pulse power and responds within nanoseconds to prevent false resets during ISO 7637-2 pulses. |
| Consumer USB-C PD Adapter Feedback | Medical Sensor Signal Conditioning |
Use Scenario: Secondary-side voltage reference in flyback converter feedback loop for 9 V USB-C Power Delivery adapter. IC Role / Device Role / Timing Role: Precision Zener establishing optocoupler LED current setpoint for isolated output regulation. Use Value: 15 Ω dynamic impedance minimizes output ripple coupling into feedback path, improving cross-regulation under multi-rail loads. |
Use Scenario: Bias voltage generator for analog front-end op-amps in portable ECG sensor node. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage reference supplying clean 9.1 V to instrumentation amplifier stages. Use Value: Sub-0.5 µA leakage at 7 V prevents input bias current errors in high-impedance biopotential sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240B-7-F | Same 9.1 V nominal Zener voltage, but 350 mW power rating and SOT-23 package - smaller footprint, lower thermal mass | Preferred for space-constrained portable designs; derates faster above +60°C ambient due to lower PD | Select when board area is critical and peak power demand stays below 350 mW |
| BZX84-C9V1 | 9.1 V Zener in SOT-23 package, 300 mW rating, ±5% tolerance, but not AEC-Q101 qualified | Suitable for commercial-grade consumer products; lacks automotive reliability validation and extended temperature performance data | Choose for cost-sensitive non-automotive applications where AEC-Q101 compliance is not required |
Compared with MMBZ5240B-7-F and BZX84-C9V1, BZT52C9V1-7-F offers higher power handling (500 mW), AEC-Q101 qualification, and SOD123 mechanical robustness - making it optimal for industrial and automotive environments demanding sustained thermal performance and long-term reliability.
Availability
BZT52C9V1-7-F is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECU reference, and medical sensor signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for BZT52C9V1-7-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-yield voltage regulation and protection in automotive, industrial, and consumer power systems.
FAQ
What is the maximum continuous power dissipation for BZT52C9V1-7-F at +25°C ambient?
The device is rated for 370 mW continuous power dissipation at TA = +25°C when mounted on an FR-4 PCB with 1-inch copper pad layout, per Note 8 in DS18004 Rev. 38-2. Derating begins linearly above +25°C at 3.38 mW/°C based on RθJA = 338 °C/W.
Is BZT52C9V1-7-F suitable for automotive applications?
Yes - it is explicitly qualified to AEC-Q101 standards for high-reliability automotive use, with operating temperature range of –65°C to +150°C and full traceability through Diodes Incorporated's automotive-grade manufacturing flow.
How does the Zener voltage change with temperature?
It exhibits a positive temperature coefficient of +3.8 mV/°C, meaning its breakdown voltage increases by approximately 3.8 mV per degree Celsius rise in junction temperature - a key factor in designing temperature-stable references.
What is the cathode marking convention on the SOD123 package?
The cathode is identified by a distinct band printed on the body end of the SOD123 package, aligned with the cathode terminal - consistent with JEDEC-standard polarity marking for surface-mount Zener diodes.
BZT52C9V1-7-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):
- 9.1 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
BZT52C9V1-7-F FAQ
1.How can I place an order for BZT52C9V1-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C9V1-7-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 BZT52C9V1-7-F reliable?
The price and inventory of BZT52C9V1-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C9V1-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C9V1-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C9V1-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C9V1-7-F?
BZT52C9V1-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C9V1-7-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 BZT52C9V1-7-F?
For technical support, including BZT52C9V1-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C9V1-7-F requirements.
6.How does Aetrix verify that BZT52C9V1-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C9V1-7-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 BZT52C9V1-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C9V1-7-F?
All BZT52C9V1-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C9V1-7-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 BZT52C9V1-7-F part is unused and in its original packaging.
Return procedure for BZT52C9V1-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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