MMBZ5245BLT1G

MMBZ5245BLT1G is a 12-volt Zener diode from ON Semiconductor’s MMBZ family. It’s a small, surface-mount, unidirectional Zener rated for about 0.5 W dissipation, packaged in a SOD-123 style (lead-free, taped/reel with LT1G code). The “B” variant indicates a Zener voltage tolerance of ±5%. It’s used for simple voltage regulation or transient/over-voltage clamping in compact SMT circuits. In operation it is reverse-biased to clamp the voltage near 12 V; check the datasheet for exact IZT (test current), ZZT (dynamic impedance), leakage, maximum reverse voltage, and power limits for your application.

Equivalent parts (15 V, 0.5 W SMT Zeners to MMBZ5245BLT1G):
- Vishay: MMSZ5245B
- Vishay: BZT52B15
- NXP/Nexperia: BZX84-C15 (and BZX84C15LT1)

MMBZ5245BLT1G features (highlights):
- Zener diode (unidirectional) for voltage regulation and overvoltage protection
- 0.5 W surface-mount device (small, easy to board-mounted)
- Package: small SMD (tape-and-reel LT1G variant)
- Zener voltage per variant (nominal value specified by the part number), with tolerance around ±5% (B)
- RoHS compliant and 100% tested
- Wide operating temperature range suitable for most applications (typically -55°C to +125°C)
- Low dynamic impedance and good voltage regulation characteristics
- Commonly used for reference, clamping, and transient suppression in power and signal circuits
Note: For exact Zener voltage and electrical specs, refer to the specific variant in the MMBZ5245BLT1G datasheet.

- Pin count: 2 pins (two-terminal device)
- Function: Zener diode (voltage regulation/clamping) used to clamp or reference voltage in circuits.

Manufacturer: ON Semiconductor (onsemi).
What kind of company: ON Semiconductor is a multinational semiconductor manufacturer that designs and produces discrete components and integrated circuits—power and analog ICs, diodes, transistors, MOSFETs, sensors and related products—serving automotive, industrial, communications and consumer electronics markets.

MMBZ5245BLT1G is a Zener diode (SMD). Common application areas:
- Shunt voltage regulation in low-power power supplies
- Precision voltage reference in analog circuits
- Overvoltage protection and input clamping on rails and I/O
- Surge/spike protection for microcontrollers and logic lines
- Signal clipping and level-shifting in analog/digital paths
- Power-on reset and rail-stabilization networks
Suitable for compact, low-cost regulation and protection in consumer, automotive, and industrial circuits.

MMBZ5245BLT1G is supplied in an SOD‑523 surface-mount (SMD) package (tape-and-reel packaging for automated pick-and-place).