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Nexperia USA Inc. BZX84J-C47,115
- Part No.:
- BZX84J-C47,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-C47,115.pdf
- Description:
- DIODE ZENER 47V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:5,930
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Product details
Overview
BZX84J-C47,115 from Nexperia is a 47 V ±5 % Zener voltage regulator diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and 40 W non-repetitive peak reverse power at tp = 100 μs, used for precision voltage reference and overvoltage clamping in automotive power rails.
For engineers reviewing the BZX84J-C47,115 datasheet, BZX84J-C47,115 pinout, BZX84J-C47,115 application, or BZX84J-C47,115 equivalent, this part supports AEC-Q101-compliant designs requiring stable 47 V regulation with low differential resistance (325 Ω at IZ = 2 mA), tight tolerance, and surface-mount compatibility in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 47 V reference across load variations, with temperature coefficient of +51.8 mV/K at IZ = 2 mA and reverse current < 0.05 µA at VR = 40 V. Its junction-to-ambient thermal resistance is 230 K/W on FR4 PCB.
The device features low forward voltage (1.1 V at IF = 100 mA), cathode-marked SOD323F package, and AEC-Q101 qualification confirming suitability for automotive ambient temperatures from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.0 V to 50.0 V at IZ = 2 mA - defines nominal regulation point with ±5 % tolerance |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 board |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 μs - enables transient surge suppression in automotive load-dump events |
| Differential Resistance (rdiff) | 325 Ω at IZ = 2 mA - determines regulation stiffness and output voltage variation under load changes |
| Reverse Current (IR) | < 0.05 µA at VR = 40 V - ensures minimal leakage before breakdown, critical for low-power standby circuits |
| Temperature Coefficient (SZ) | +51.8 mV/K at IZ = 2 mA - quantifies voltage drift per degree Celsius, enabling thermal compensation design |
| Junction Temperature (Tj) | 150 °C maximum - defines upper thermal limit for reliable long-term operation |
Pinout & Package
SOD323F (SC-90) plastic surface-mounted package: ultra-compact 2.3 mm × 1.35 mm footprint, 0.65 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical stress testing |
| ±5 % Zener voltage tolerance | Enables predictable 47 V clamping without post-production trimming in cost-sensitive applications |
| Low differential resistance (325 Ω) | Minimizes output voltage deviation under dynamic load steps, improving regulation accuracy |
| Non-repetitive peak power rating (40 W) | Supports transient protection against ISO 7637-2 pulse 5a load-dump surges in 12 V vehicle systems |
| SOD323F package | Enables high-density placement on compact PCBs while maintaining solder joint reliability via optimized pad layout |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Reference Voltage |
|---|---|
Use Scenario: Protecting microcontroller supply inputs from load-dump transients in engine control units. IC Role / Device Role / Timing Role: Zener clamp absorbing energy during ISO 7637-2 Pulse 5a events, holding rail below 50 V. Use Value: Prevents MCU latch-up or damage without requiring active TVS, leveraging 40 W surge rating and AEC-Q101 validation. |
Use Scenario: Providing stable reference for 16-bit ADC in programmable logic controller analog input modules. IC Role / Device Role / Timing Role: Passive voltage reference establishing precise 47 V scaling point for ratiometric measurements. Use Value: Enables ±0.5 % full-scale accuracy over −40 °C to +85 °C using +51.8 mV/K coefficient and low rdiff. |
| Telecom Line Interface Protection | Medical Battery Management Monitoring |
Use Scenario: Overvoltage limiting on 48 V PoE-powered interface cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary clamping element downstream of primary TVS, fine-tuning clamp level to 47 V. Use Value: Reduces voltage overshoot by 3–5 V versus generic 51 V Zeners, preserving downstream LDO headroom. |
Use Scenario: Monitoring cell stack voltage in portable defibrillator battery packs with 44–48 V nominal range. IC Role / Device Role / Timing Role: Analog front-end reference for isolated voltage sensing circuitry. Use Value: Maintains measurement linearity across battery discharge curve due to tight 44–50 V window and < 0.05 µA IR at 40 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C47,115 | Same 47 V ±5 % rating but lacks AEC-Q101 qualification; PZSM = 40 W unchanged; rdiff = 325 Ω identical | Not approved for automotive use; suitable only for industrial/commercial grade where qualification is not mandated | Select when cost sensitivity outweighs automotive compliance requirements and thermal derating matches ambient conditions |
| MMSZ47ET1G | 47 V ±5 %, SOD-123 package (larger than SOD323F); Ptot = 500 mW (50 mW lower); rdiff = 350 Ω (25 Ω higher) | Requires more PCB area; slightly reduced regulation precision and surge margin; RoHS-compliant but not AEC-Q101 qualified | Choose if legacy SOD-123 footprint compatibility is required and 50 mW/25 Ω trade-off is acceptable |
Compared with BZX84J-C47,115, the BZX84-C47,115 offers identical electrical performance but no automotive qualification, while MMSZ47ET1G trades smaller size and AEC-Q101 for higher rdiff and lower Ptot-making the J-series optimal for space-constrained, safety-critical automotive voltage clamping.
Availability
BZX84J-C47,115 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor reference, and telecom line interface applications requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX84J-C47,115 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.
The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh automotive and industrial environments.
FAQ
What is the maximum continuous reverse current the BZX84J-C47,115 can sustain at 47 V?
The device is not rated for continuous reverse conduction at its Zener voltage. At VZ = 47 V, it operates in controlled breakdown with typical test current IZ = 2 mA. Sustained reverse current beyond 2 mA must be thermally limited by Ptot = 550 mW, implying absolute max average IZ ≈ 11.7 mA at 47 V-practically constrained by PCB thermal design and ambient temperature.
Does the BZX84J-C47,115 require a series current-limiting resistor in all applications?
Yes-operation in Zener breakdown requires external current limiting to prevent thermal runaway. For example, at 47 V regulation with 12 V supply margin, a minimum 1 kΩ resistor limits IZ to ~12 mA, staying within Ptot and ensuring stable regulation without exceeding Tj = 150 °C on standard FR4.
How does the +51.8 mV/K temperature coefficient affect regulation accuracy over temperature?
At IZ = 2 mA, the coefficient causes +51.8 mV increase per °C rise in junction temperature. From 25 °C to 125 °C (ΔT = 100 K), VZ shifts +5.18 V-resulting in 47 V → 52.18 V. This 10.9 % drift must be compensated in precision references via circuit topology or calibration, not inherent to the diode.
Can the BZX84J-C47,115 replace a 51 V Zener in an existing design?
No-its 44–50 V range is incompatible with 51 V nominal regulation. Substituting would cause premature conduction and excessive power dissipation. A true 51 V alternative is BZX84J-C51,115 (48–54 V range), which shares identical package, AEC-Q101 status, and thermal specs but targets that higher voltage node.
BZX84J-C47,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-C47,115 FAQ
1.How can I place an order for BZX84J-C47,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-C47,115 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 BZX84J-C47,115 reliable?
The price and inventory of BZX84J-C47,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-C47,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-C47,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-C47,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-C47,115?
BZX84J-C47,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-C47,115 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 BZX84J-C47,115?
For technical support, including BZX84J-C47,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-C47,115 requirements.
6.How does Aetrix verify that BZX84J-C47,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-C47,115 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 BZX84J-C47,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-C47,115?
All BZX84J-C47,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-C47,115, 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 BZX84J-C47,115 part is unused and in its original packaging.
Return procedure for BZX84J-C47,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-C47,115 Tags
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