The Vishay MMBZ27VDA is a dual silicon planar Zener diode featuring a common-anode configuration in a compact SOT-23 surface-mount package. Its dual-diode structure can be configured for bidirectional protection or as two separate unidirectional Zener diodes, allowing two independent signal lines to be protected with a single device.
The device has a nominal 27V Zener voltage, with a specified range of 25.65V to 28.35V at 1mA. Its working peak reverse voltage is 22V, with maximum reverse leakage current of 80nA. Under the specified surge conditions, peak pulse current is 1A, maximum clamping voltage is 38V, and peak pulse power reaches 40W.
The MMBZ27VDA operates over a temperature range of -55°C to +150°C. Maximum power dissipation on an FR-4 board with the recommended footprint is 300mW, and maximum junction temperature is 150°C. AEC-Q101 testing specifies ESD capability greater than 8kV HBM and 800V Machine Model.
Vishay’s current datasheet lists the AEC-Q101-qualified automotive ordering code as MMBZ27VDA-HE3_A-08, supplied on an 8mm tape and 7-inch reel with 3,000 units per reel. If your procurement system lists MMBZ27VDA-HE3-08, confirm the suffix with the supplier before ordering.
Key Features:
- Manufacturer: Vishay
- Base Part Number: MMBZ27VDA
- User-Specified Part Number: MMBZ27VDA-HE3-08
- Current Automotive Ordering Code: MMBZ27VDA-HE3_A-08
- Device Type: Dual Zener Diode
- Configuration: Common Anode
- Nominal Zener Voltage: 27V
- Zener Voltage Range: 25.65V to 28.35V @ 1mA
- Working Peak Reverse Voltage: 22V
- Maximum Reverse Leakage Current: 80nA
- Peak Pulse Current: 1A
- Maximum Clamping Voltage: 38V
- Peak Pulse Power: 40W
- Maximum Forward Voltage: 1.1V @ 200mA
- ESD HBM Capability: >8kV
- ESD Machine Model: >800V
- FR-4 Board Power Dissipation: 300mW
- Operating Temperature: -55°C to +150°C
- Package: SOT-23
- Mounting Type: Surface Mount
- MSL: Level 1
- Flammability Rating: UL 94 V-0
- Automotive Version: AEC-Q101 Qualified
- Packaging: Tape & Reel
- Reel Quantity: 3,000 pcs.
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