The onsemi MMSZ4688T1G is a 4.7V low-test-current Zener voltage regulator diode from the MMSZ4xxxT1G family. It uses a compact SOD-123 surface-mount package and is designed for voltage regulation, reference, clamping, and general-purpose protection applications. The series is rated for 500mW power dissipation under the specified board conditions.
The device has a nominal 4.7V Zener voltage. At a low 50µA test current, the specified Zener-voltage range is 4.47V to 4.94V, corresponding to approximately ±5% tolerance. The device marking code is CT.
Maximum reverse leakage current is 10µA at VR = 3V. The series specifies a maximum forward voltage of 0.9V at IF = 10mA.
Maximum power dissipation is 500mW under the specified FR-4/FR-5 board condition. Junction-to-ambient thermal resistance is 340°C/W, while 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 protection above 16kV.
The exact MMSZ4688T1G uses a SOD-123 / Case 425 package and is supplied in 3,000-piece tape-and-reel packaging. onsemi currently lists the exact part as Active. The standard MMSZ version is not the AEC-Q101 automotive variant; the corresponding automotive-qualified part is SZMMSZ4688T1G.
Key Features:
- Manufacturer: onsemi
- Part Number: MMSZ4688T1G
- Device Type: Zener Voltage Regulator Diode
- Configuration: Single
- Nominal Zener Voltage: 4.7V
- Zener Voltage Range: 4.47V to 4.94V
- Voltage Tolerance: Approx. ±5%
- Zener Test Current: 50µA
- Maximum Reverse Leakage: 10µA at 3V
- 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: CT
- Mounting Type: Surface Mount
- Packaging: Tape & Reel
- Reel Quantity: 3,000 pcs
- Pb-Free / RoHS Compliant
- Automotive Variant: SZMMSZ4688T1G
- Product Status: Active.
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