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Diodes Incorporated BZX84C47Q-13-F
- Part No.:
- BZX84C47Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C47Q-13-F.pdf
- Description:
- DIODE ZENER 47V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,105
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Product details
Overview
BZX84C47Q-13-F from Diodes Incorporated is a 47 V, 350 mW surface-mount Zener diode in SOT23 package, rated for 2 mA test current with ±6% voltage tolerance (44–50 V), 170 Ω dynamic impedance at 2 mA, and 0.1 µA maximum reverse leakage at 32.9 V. It serves as a precision voltage reference or overvoltage clamp in automotive power rail monitoring circuits.
For engineers reviewing the BZX84C47Q-13-F datasheet, BZX84C47Q-13-F pinout, BZX84C47Q-13-F application, or BZX84C47Q-13-F equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (357 °C/W), AEC-Q101 qualification, SOT23 terminal layout, and low leakage performance at rated reverse voltage.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 47 V regulation point at 2 mA test current. Its planar die construction ensures stable voltage characteristics across temperature, and its AEC-Q101 qualification confirms suitability for automotive environments requiring high reliability under thermal cycling and vibration stress.
The device exhibits a negative temperature coefficient of −3.5 mV/°C and total capacitance of ~10 pF at 1 V reverse bias. Its 350 mW power rating applies under ambient-temperature terminal conditions, with derating required above +25°C per the published curve (Fig. 1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V nominal, 44–50 V range at 2 mA - defines precise clamping threshold for 12 V/24 V automotive supply rails. |
| Power Dissipation (PD) | 350 mW - maximum continuous power under ambient-temperature terminal conditions; supports compact PCB layout without forced cooling. |
| Zener Impedance (ZZT) | 170 Ω at 2 mA - determines regulation stiffness; lower impedance yields tighter voltage stability under load transients. |
| Reverse Leakage (IR) | 0.1 µA max at 32.9 V - ensures minimal standby current in always-on monitoring circuits. |
| Thermal Resistance (RθJA) | 357 °C/W - quantifies junction-to-ambient heat transfer efficiency on standard FR-4 board; critical for thermal design margin. |
| Temperature Coefficient | −3.5 mV/°C - enables predictable voltage drift compensation in temperature-sensitive analog references. |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 0.008 g weight, UL 94V-0 flammability rating, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction path / cathode reference ground | Connected to system ground or lower-potential node; reverse-biased during Zener operation. |
| Cathode (Pin 2) | Zener breakdown terminal / voltage reference output | Connected to regulated node; maintains 47 V relative to anode when reverse current ≥2 mA flows. |
| Collector / NC (Pin 3) | Non-connected internal tie | Internally unconnected; electrically isolated and must not be used for signal or thermal conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); compliant with RoHS 3 (2015/863/EU) and Diodes Inc.'s "Green" definition. |
| Planar die construction | Enables tight Zener voltage distribution and stable long-term parametric drift under thermal stress. |
| SOT23 tape-and-reel packaging (10,000 pcs) | Optimized for high-speed pick-and-place assembly; eliminates manual handling and improves placement yield in automotive PCB manufacturing. |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring 24 V battery rail in engine control units to detect overvoltage faults before damaging downstream logic. IC Role / Device Role / Timing Role: Zener clamp limiting input to protection circuitry; referenced to ground with cathode tied to rail. Use Value: 47 V breakdown prevents damage to 3.3 V microcontroller I/O pins while tolerating normal 28 V alternator spikes. |
Use Scenario: Providing stable 47 V reference for ratiometric scaling of 4–20 mA loop transmitter outputs. IC Role / Device Role / Timing Role: Precision voltage reference source for DAC feedback or ADC reference divider networks. Use Value: ±6% tolerance and −3.5 mV/°C TC enable calibration accuracy within ±1.2% over −40°C to +125°C. |
| LED Driver Overvoltage Protection | Telecom Line Interface Clamp |
Use Scenario: Clamping transient surges on constant-current LED driver outputs in vehicle lighting modules. IC Role / Device Role / Timing Role: Shunt protector placed across LED string to divert surge energy away from driver IC. Use Value: 350 mW rating sustains 100 µs 1 kV ESD pulses per IEC 61000-4-2 Level 4 without degradation. |
Use Scenario: Protecting RS-485 transceiver inputs against induced lightning surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Primary front-end clamp referenced to local ground; paired with TVS for bidirectional protection. Use Value: Low 0.1 µA leakage at 32.9 V avoids loading high-impedance receiver inputs during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ47VCLT1G | Same 47 V nominal, but 200 mW PD, 220 Ω ZZT, and no AEC-Q101 rating. | Not qualified for automotive use; suitable only for commercial-grade consumer or industrial boards. | Select when cost is prioritized over automotive reliability and thermal margin is sufficient. |
| BZX84-C47,115 | Identical electrical specs and AEC-Q101 rating, but packaged in 3,000-piece tape-and-reel (−7-F suffix) instead of 10,000 (−13-F). | No functional difference; choice depends solely on production volume and reel change frequency. | Select when smaller reels reduce line changeover time or match existing inventory planning cycles. |
Compared with MMBZ47VCLT1G, BZX84C47Q-13-F delivers higher power headroom and automotive qualification; compared with BZX84-C47,115, it offers identical performance with optimized logistics for high-volume automated assembly.
Availability
BZX84C47Q-13-F is available at Aetrix Electronics and suitable for automotive ECU power monitoring, industrial sensor signal conditioning, LED driver overvoltage protection, and telecom line interface clamp applications requiring stable component supply and AEC-Q101 compliance.
Supply support for BZX84C47Q-13-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 the Americas.
The BZX84 series targets high-reliability voltage regulation in space-constrained, thermally demanding environments-especially automotive and industrial systems where consistent Zener behavior under thermal stress is critical.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C47Q-13-F?
The device begins regulating at 44 V (minimum Zener voltage) and reaches full breakdown at 47 V nominal under 2 mA test current. It maintains stable regulation up to 50 V (maximum specified VZ) and withstands up to 32.9 V with ≤0.1 µA leakage-beyond which reverse current rises sharply.
Is BZX84C47Q-13-F suitable for use in high-humidity environments?
Yes. Its SOT23 package meets J-STD-020 moisture sensitivity level 1, meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to reflow. The UL 94V-0 mold compound and annealed matte tin plating also resist corrosion in humid under-hood automotive conditions.
How does the −3.5 mV/°C temperature coefficient affect circuit design?
This negative coefficient means output voltage decreases by 3.5 mV per degree Celsius rise. For a 47 V reference operating from −40°C to +125°C, total drift is approximately −577.5 mV. Designers must compensate via resistor networks or select complementary components to maintain system accuracy.
Can BZX84C47Q-13-F replace BZX84C47-13-F in an existing design?
Yes-mechanically and electrically identical. The "Q" suffix denotes AEC-Q101 qualification; all electrical parameters, package dimensions, pinout, and marking are unchanged. No layout or firmware modifications are required for drop-in replacement in automotive designs.
BZX84C47Q-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±6.38%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 32.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C47Q-13-F FAQ
1.How can I place an order for BZX84C47Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C47Q-13-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 BZX84C47Q-13-F reliable?
The price and inventory of BZX84C47Q-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C47Q-13-F is usually 5 days.
3.What payment methods are accepted for BZX84C47Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C47Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C47Q-13-F?
BZX84C47Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C47Q-13-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 BZX84C47Q-13-F?
For technical support, including BZX84C47Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C47Q-13-F requirements.
6.How does Aetrix verify that BZX84C47Q-13-F is sourced from the original manufacturer or authorized distributors?
All BZX84C47Q-13-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 BZX84C47Q-13-F meets industry standards.
7.What is the process for return or replacement of BZX84C47Q-13-F?
All BZX84C47Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C47Q-13-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 BZX84C47Q-13-F part is unused and in its original packaging.
Return procedure for BZX84C47Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C47Q-13-F Tags
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