BZX84-C4V7,215

BZX84-C4V7 is a 4.7-volt Zener diode from the BZX84 family. It is a small, surface‑mount, 0.5 W device used for simple voltage regulation, clamping, or reference in low‑power circuits. In reverse bias, it holds near 4.7 V once the reverse current reaches its operating level; tolerance is typically ±5% (depending on grade). The part is usually in a SOT‑23 (two terminals used) package. Typical data: IZT (test current) a few milliamps; ZZT (dynamic impedance) tens to a few hundred ohms; temperature coefficient is negative (voltage drops slightly with rising temperature). How to use: connect the cathode to the higher voltage and the anode to ground/reference, and ensure current is limited to stay within the diode’s power rating. Pros: cheap, compact, easy to implement. Cons: not a precision regulator; voltage shifts with current and temperature. Common applications: simple power‑rail regulation, overvoltage/clamp protection, and reference voltages in microcontroller circuits.

Common equivalents (4.7 V Zener, ~500 mW) include:
- BZX84C4V7 (Nexperia/NXP)
- BZT52C4V7 (Vishay / Diodes Inc.)
- MMBZ5222B (ON Semiconductor / Diodes)
- BZV55-C4V7 (ROHM)
Verify packaging, power dissipation, knee current and tolerance before substituting.

Here are the typical features of BZX84-C4V7 (4.7 V Zener, tolerance C = ±5%):
- Zener diode with nominal Vz ≈ 4.7 V
- Tolerance: ±5% (class C)
- Power rating: 0.5 W (typical for BZX84 family)
- Surface-mount device (SMD) in common small-package form factor
- Wide operating temperature range (approximately -55°C to +125°C; check specific datasheet)
- RoHS compliant and lead-free
- Used for voltage regulation, reference, and overvoltage/surge protection in low-current circuits
- Fast response with low dynamic impedance in the Zener region (datasheet-specific values)
Note: exact package type, pinout, and electrical parameters can vary by manufacturer. Always consult the specific datasheet for your component.

- Pin count: 2 pins — Anode (A) and Cathode (K) (cathode typically band‑marked).
- Function: 4.7 V Zener diode (low‑power voltage reference/clamp). It conducts in reverse at ≈4.7 V for voltage regulation, reference or transient suppression in low‑current circuits.

Manufacturer: Diodes Incorporated.
What kind of company: Diodes Inc. is a global semiconductor manufacturer that designs and supplies discrete semiconductors and ICs — including diodes (Zener, switching), transistors, rectifiers, logic, analog and mixed‑signal devices — for consumer, computing, communications, industrial and automotive markets.

BZX84-C4V7 is a 4.7 V Zener diode used for:
- Simple shunt regulator and fixed voltage reference in low‑current circuits
- Reference voltage for ADC/DACs, comparators, and other analog blocks
- Overvoltage protection and input clamping on IC pins (with a series resistor)
- Signal conditioning: clipping/limiting and waveform shaping
- Noise reference and stabilization in small, low‑power analog networks
(Used in compact SMD packages for consumer, automotive, and general electronics.)

The BZX84‑C4V7,215 is a surface‑mount Zener diode supplied in the SOD‑523 (ultra‑small SMD) package.