SZMMSZ4689T1G

SZMMSZ4689T1G is a surface-mount Zener diode from the MMSZ4689 family. It is a 0.5 W, single-diode device used for voltage regulation, reference generation, and over‑voltage protection in compact circuits. The T1G suffix indicates vendor-specific packaging (RoHS-compliant, tape/ reel). The exact Zener voltage (Vz), tolerance, and other electrical specs are defined in the datasheet for this exact variant and can vary by lot. In circuits, it is reverse-biased to clamp the voltage at Vz and maintain a stable reference or protect downstream components. Typical datasheet parameters you’ll see include Vz, maximum reverse voltage, test current (Izt), dynamic impedance, and power dissipation (Ptot) at a given ambient temperature. For precise values and recommended operating conditions, consult the supplier’s datasheet (e.g., Vishay/diodes.com) for SZMMSZ4689T1G.

Here are the typical features of the MMSZ4689T1G Zener diode (SMD):
- Type: Zener diode for voltage regulation and transient clamping
- Package: Surface-mount (MMSZ family), Tape & Reel (T1G)
- Nominal Zener voltage: 68.9 V
- Power rating: 0.5 W at 25°C (standard)
- Tolerance: ±5%
- Temperature range: -55°C to +125°C
- Endurance: RoHS compliant
- Applications: voltage regulation, reference, overvoltage protection, surge suppression
Note: For exact electrical characteristics (I_R max, dynamic impedance, etc.) and packaging details, please consult the official datasheet.

- Pin count: 2 pins (anode and cathode)
- Function: Zener diode (surface-mount) used for voltage regulation/clamping (voltage reference/protection).

Manufacturer: Diodes Incorporated.
What kind of company: Diodes Incorporated is a global semiconductor manufacturer that designs and supplies discrete, logic and analog semiconductor components (diodes, transistors, MOSFETs, rectifiers, signal conditioning ICs, etc.) for consumer, computing, industrial and automotive markets.

SZMMSZ4689T1G is a Zener diode (MMSZ4689) in an SOD-123 package. Typical applications include:
- Voltage regulation and reference in low-power shunt regulator circuits
- Voltage clamping and transient protection for IC inputs, rails and data lines
- Overvoltage protection for power supplies, microcontrollers, sensors and interfaces
- Surge/spike protection in telecom, automotive and consumer electronics
- Providing a stable reference voltage in precision analog circuits (bandgap/reference networks)

It’s an MMSZ Zener diode in an SMD SOD-123 style package (Pb-free variant, T1G).