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SZMM5Z24VT1G


500mW Zener diode, 24V, SOD-523, AEC-Q101, ESD Class 3 (>16kV)

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制造商零件:

SZMM5Z24VT1G

包装:

SOD-523 (1.2 x 0.8 x 0.7 mm)

品牌:
产品类别:
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说明

产品概览

The onsemi SZMM5Z24VT1G is a 500 mW Zener voltage regulator diode with a nominal Zener voltage of 24 V, housed in a compact SOD-523 package. The SZ prefix denotes automotive qualification with AEC-Q101 compliance and PPAP capability. It provides reliable voltage regulation and ESD protection in space-constrained automotive and industrial circuits.

主要规格

Zener Voltage (Nominal) 24 V
Zener Voltage Range 22.8 V to 25.6 V
功率耗散 500 mW
Zener Impedance (ZZT) 55 Ω @ IZT = 5 mA
Zener Impedance (ZZK) 600 Ω @ IZK = 0.25 mA
Leakage Current 0.05 µA @ VR = 18 V
Temperature Coefficient 18.9 mV/°C
ESD Rating Class 3 (>16 kV HBM)
工作温度 -55 °C to +150 °C
包装 SOD-523

特点

  • AEC-Q101 qualified with PPAP capability (SZ prefix)
  • 500 mW power rating on FR-4 board
  • Compact SOD-523 package (1.2 x 0.8 x 0.7 mm)
  • ESD Class 3 rating (>16 kV per HBM)
  • Wide Zener voltage tolerance: ±5%
  • Pb-free, RoHS compliant
  • MSL 1 — unlimited floor life

应用

  • Automotive voltage regulation and clamping
  • ESD and surge protection for signal lines
  • Reference voltage generation
  • Overvoltage protection in industrial control

The onsemi SZMM5Z24VT1G is a 24 V Zener voltage regulator diode in the automotive-qualified MM5Z series. The SZ prefix indicates that this device meets AEC-Q101 requirements with PPAP (Production Part Approval Process) capability, making it suitable for automotive applications requiring unique site and change control traceability. With a nominal Zener voltage of 24 V (range 22.8 V to 25.6 V at IZT = 5 mA), the device provides reliable voltage clamping and reference generation for 24 V automotive bus systems. The 500 mW power dissipation rating on FR-4 board is adequate for low-current regulation and transient suppression. The SOD-523 package occupies minimal PCB area (1.2 x 0.8 mm), making it ideal for high-density designs. ESD Class 3 (>16 kV HBM) provides robust protection against electrostatic discharge events during assembly and operation.

The SZMM5Z24VT1G operates in the reverse breakdown region of a PN junction. When the reverse voltage across the diode exceeds the Zener breakdown voltage (24 V nominal), current begins to flow through the device while the voltage across it remains approximately constant. This constant-voltage characteristic makes Zener diodes useful as voltage references and shunt regulators. In a typical shunt regulator circuit, the Zener diode is connected in parallel with the load through a series current-limiting resistor. As the input voltage or load current varies, the Zener diode adjusts its current to maintain a constant output voltage. The Zener impedance (55 Ω at IZT = 5 mA) determines the regulation quality — lower impedance provides better voltage stability. The positive temperature coefficient of 18.9 mV/°C means the Zener voltage increases slightly with temperature, which must be considered in precision applications. The device’s ESD protection capability (>16 kV HBM) also makes it effective as a transient voltage suppressor for signal line protection.

针脚 名称 类型 功能
1 阴极 Terminal Polarity band side; connect to positive rail for regulation
2 阳极 Terminal Connect to ground for normal Zener operation
  • 24V automotive bus overvoltage clamping protection
  • ESD protection for automotive CAN/LIN transceiver lines
  • Voltage reference for ADC threshold comparison
  • Industrial 24V I/O module surge suppression
制造商 部件编号 包装 说明
onsemi MM5Z24VT1G SOD-523 Commercial grade equivalent
Nexperia BZX585-C24 SOD-523 500mW, 24V Zener alternative
Vishay MMSZ5252ET1G SOD-123 24V, 500mW, larger package
二极管公司 BZX585C24-7 SOD-523 24V 500mW Zener
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