The onsemi MMSZ4683T1G is a 3.0V low-test-current Zener voltage regulator diode from the MMSZ4xxxT1G series. It is housed in a compact SOD-123 surface-mount package and is intended for voltage regulation, reference, clamping, and general protection applications. onsemi currently lists the exact MMSZ4683T1G as Active.
The device has a nominal 3.0V Zener voltage. At a very low 50µA test current, Zener voltage is specified from 2.85V to 3.15V, corresponding to approximately ±5% tolerance.
Maximum reverse leakage current is 0.8µA at 1V reverse voltage. Maximum forward voltage is 0.9V at 10mA forward current, supporting low-power regulation and reference circuits.
Maximum power dissipation is 500mW under the specified FR-5 board condition. Junction-to-ambient thermal resistance is 340°C/W, and junction-to-lead thermal resistance is 150°C/W. Junction and storage temperatures range from -55°C to +150°C, and the series provides HBM Class 3 ESD capability above 16kV.
The exact MMSZ4683T1G uses a 2-lead SOD-123 / Case 425 package, with device marking CJ. The T1G version is supplied in 3,000-piece tape-and-reel packaging and is Pb-free and RoHS compliant. The standard MMSZ4683T1G is not the automotive-qualified version; onsemi uses the SZ prefix for AEC-Q101-qualified and PPAP-capable variants.
Key Features:
- Manufacturer: onsemi
- Part Number: MMSZ4683T1G
- Series: MMSZ4xxx
- Device Type: Zener Voltage Regulator Diode
- Configuration: Single
- Nominal Zener Voltage: 3.0V
- Zener Voltage Range: 2.85V to 3.15V
- Voltage Tolerance: Approx. ±5%
- Zener Test Current: 50µA
- Maximum Reverse Leakage: 0.8µA at 1V
- Maximum Forward Voltage: 0.9V at 10mA
- Maximum Power Dissipation: 500mW
- RθJA: 340°C/W
- RθJL: 150°C/W
- HBM ESD Rating: >16kV
- Junction / Storage Temperature: -55°C to +150°C
- Package: SOD-123 / Case 425
- Pin Count: 2
- Device Marking: CJ
- Mounting Type: Surface Mount
- Packaging: Tape & Reel
- Reel Quantity: 3,000 pcs
- Pb-Free / RoHS Compliant
- Automotive Qualification: Standard version is non-AEC-Q101
- Product Status: Active.
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