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Nexperia USA Inc. BZX84-C47,215
- Part No.:
- BZX84-C47,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C47,215.pdf
- Description:
- DIODE ZENER 47V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:89
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Product details
Overview
BZX84-C47,215 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 47 V nominal breakdown voltage at 2 mA test current, 375 Ω maximum differential resistance, and 170 μA reverse leakage at 37.6 V, used for precision low-power voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the BZX84-C47,215 datasheet, BZX84-C47,215 pinout, BZX84-C47,215 application, or BZX84-C47,215 equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (330 K/W junction-to-solder-point), non-repetitive peak reverse current (0.5 A), differential resistance (375 Ω), and SOT23 footprint compatibility with automated PCB assembly.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current above its specified Zener breakdown threshold. It exhibits a positive temperature coefficient of +0.05 mV/K at IZ = 2 mA, enabling predictable drift compensation in temperature-sensitive references.
Designed for surface-mount use on FR4 PCBs with single-sided 70 µm copper, it delivers 250 mW total power dissipation at Tamb ≤ 25 °C and withstands non-repetitive 40 W reverse surges (tp = 100 μs) - critical for transient suppression in DC-DC converter feedback paths and sensor biasing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.0 V to 50.0 V at IZ = 2 mA - defines regulated output range under standard test conditions |
| Differential Resistance (rdif) | ≤375 Ω - determines regulation stiffness and output impedance in shunt configuration |
| Reverse Leakage (IR) | ≤170 μA at VR = 37.6 V - sets minimum load current requirement to maintain regulation |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables use as polarity protection or clamping diode in dual-role designs |
| Non-repetitive Peak Current (IZSM) | 0.5 A - supports transient overvoltage absorption without failure during surge events |
| Junction-to-Solder-Point Rth | 330 K/W - quantifies thermal path efficiency from die to PCB copper, guiding layout for reliability |
Pinout & Package
Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.9 mm × 1.1 mm body, 0.95 mm height, and standard reflow-compatible footprint per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased during regulation |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical connection - must remain unconnected on PCB |
| 3 | Cathode (K) | Connected to higher-potential node; carries reverse current during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener tolerance | Enables cost-effective voltage referencing where tight regulation is not required, e.g., power rail monitoring |
| 250 mW total power dissipation | Supports continuous operation in low-current bias networks without heatsinking |
| 0.5 A non-repetitive peak reverse current | Provides robustness against ESD and line transients in industrial control I/O protection |
| 330 K/W junction-to-solder-point thermal resistance | Allows direct thermal coupling to PCB copper pour for improved long-term stability |
| SOT23 footprint compatibility | Ensures drop-in replacement in legacy designs and compatibility with high-speed pick-and-place equipment |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp for Microcontroller I/O |
|---|---|
|
Use Scenario: Regulating output voltage of isolated flyback or buck-boost converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Shunt reference providing precise 47 V threshold to error amplifier input. Use Value: Maintains ±5 % output accuracy across temperature while consuming <100 μA quiescent current. |
Use Scenario: Protecting 3.3 V or 5 V GPIO pins from accidental 24 V field wiring faults. IC Role / Device Role / Timing Role: Reverse-biased clamp limiting pin voltage to 47 V during fault condition. Use Value: Absorbs up to 0.5 A surge for 100 μs without degradation, preventing latch-up or gate oxide rupture. |
| Sensor Bias Voltage Generator | ADC Reference Stabilizer |
|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in industrial transmitters. IC Role / Device Role / Timing Role: Low-noise Zener source replacing higher-cost bandgap references where 47 V bias is acceptable. Use Value: Delivers <170 μA leakage at 37.6 V, minimizing measurement error in high-impedance bridge configurations. |
Use Scenario: Stabilizing reference input of 12-bit SAR ADCs in data acquisition modules operating from unregulated rails. IC Role / Device Role / Timing Role: Low-dynamic-impedance shunt regulator reducing reference ripple and improving ENOB. Use Value: 375 Ω differential resistance ensures <0.5 LSB error contribution under 1 mA load variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ47VC | Same 47 V nominal, ±5 % tolerance, SOT23 package, but 400 Ω max rdif and 200 μA IR at 37.6 V | Higher leakage and impedance reduce regulation accuracy in precision feedback paths | Select when cost is prioritized over regulation stiffness and long-term thermal stability |
| Vishay BZX84-C47-TP | Identical electrical specs and SOT23-3L package, but qualified to AEC-Q200 Grade 3 (−40 °C to +125 °C) | Approved for automotive body electronics where extended temperature operation is mandatory | Select for automotive-grade designs requiring qualification beyond industrial temperature range |
Compared with BZX84-C47,215, MMBZ47VC trades tighter thermal performance for higher leakage and impedance, while BZX84-C47-TP adds automotive qualification at identical electrical behavior - enabling selection based on environmental compliance rather than circuit function.
Availability
BZX84-C47,215 is available at Aetrix Electronics and suitable for power supply feedback references, overvoltage clamps, sensor bias networks, and ADC reference stabilization requiring stable component supply with full traceability and volume scalability.
Supply support for BZX84-C47,215 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 logic, discrete, and MOSFET devices optimized for efficiency, reliability, and manufacturability in high-volume electronics.
The BZX84 series targets cost-sensitive, space-constrained applications requiring stable low-power voltage regulation - emphasizing SOT23 compatibility, tight parametric consistency, and robust surge handling for industrial and consumer power management.
FAQ
What is the maximum continuous power dissipation for BZX84-C47,215 at 70 °C ambient?
At Tamb = 70 °C, derated power dissipation is 150 mW, calculated using the 250 mW rating at 25 °C and thermal resistance of 500 K/W (junction-to-ambient). This ensures junction temperature remains below 150 °C under steady-state operation on standard FR4 PCBs.
Can BZX84-C47,215 be used in series to achieve higher regulation voltage?
No - series connection introduces mismatched temperature coefficients and unequal current sharing due to parameter spread (±5 % VZ tolerance), risking thermal runaway. For higher voltages, use single-device alternatives like BZX84-C68 or dedicated multi-Zener ICs.
Is the n.c. pin (pin 2) safe to connect to ground or leave floating?
Pin 2 is internally unconnected and must remain unconnected on the PCB. Grounding it risks mechanical stress on the bond wire or unintended parasitic coupling; leaving it floating has no electrical impact and aligns with Nexperia's mounting recommendations.
How does the 0.05 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a +0.05 mV/K coefficient, VZ shifts +4.25 mV/°C across the range, resulting in ~7.1 V total drift (142 °C × 0.05 mV/K). At 47 V nominal, this yields ±7.5 % worst-case deviation - acceptable for non-critical biasing but insufficient for precision references without compensation.
BZX84-C47,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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:
- TO-236AB
BZX84-C47,215 FAQ
1.How can I place an order for BZX84-C47,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C47,215 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 BZX84-C47,215 reliable?
The price and inventory of BZX84-C47,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C47,215 is usually 5 days.
3.What payment methods are accepted for BZX84-C47,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C47,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C47,215?
BZX84-C47,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C47,215 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 BZX84-C47,215?
For technical support, including BZX84-C47,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C47,215 requirements.
6.How does Aetrix verify that BZX84-C47,215 is sourced from the original manufacturer or authorized distributors?
All BZX84-C47,215 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 BZX84-C47,215 meets industry standards.
7.What is the process for return or replacement of BZX84-C47,215?
All BZX84-C47,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C47,215, 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 BZX84-C47,215 part is unused and in its original packaging.
Return procedure for BZX84-C47,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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