SMAJ12A

Part: SMAJxxA/CA series — STMicroelectronics

Type: Transient Voltage Suppressor Diode

Description: The SMAJ series is designed to protect sensitive equipment against electrostatic discharges and electrical overstress, offering 400 W peak pulse power (10/1000 μs) and a stand-off voltage range from 5 V to 188 V.

Operating Conditions:

• Stand-off voltage: 5 V to 188 V
• Operating junction temperature: -55 to +150 °C
• Leakage current: 0.2 μA at 25 °C (for V RM ≥ 10 V)

Absolute Maximum Ratings:

• Max peak pulse voltage (IEC 61000-4-2 Contact discharge): 30 kV
• Max peak pulse voltage (IEC 61000-4-2 Air discharge): 30 kV
• Max peak pulse power dissipation (Tj initial = Tamb): 400 W
• Max storage temperature range: -65 to +150 °C
• Max operating junction temperature range: -55 to +150 °C
• Max lead temperature for soldering (10 s): 260 °C

Key Specs:

• Stand-off voltage (V RM): 5 V to 188 V
• Peak pulse power (P PP) (10/1000 μs): 400 W
• Peak pulse power (P PP) (8/20 μs): 2.3 kW
• Leakage current (I RM) at 25 °C (for V RM ≥ 10 V): 0.2 μA
• Leakage current (I RM) at 85 °C (for V RM ≥ 10 V): 1 μA
• Breakdown voltage (V BR) at I BR = 1 mA (SMAJ10A/CA): 11.1 V (Min.)
• Clamping voltage (V CL) at I PP = 23.5 A (10/1000 μs, SMAJ10A/CA): 17 V (Max.)
• Dynamic resistance (R D) (10/1000 μs, SMAJ10A/CA): 0.201 Ω (Max.)

Features:

• Peak pulse power: 400 W (10/1000 μs), 2.3 kW (8/20 μs)
• Stand-off voltage range from 5 V to 188 V
• Unidirectional and bidirectional types
• Low leakage current: 0.2 μA at 25 °C, 1 μA at 85 °C
• Operating Tj max: 150 °C
• JEDEC registered package outline

Applications:

• Protection against electrostatic discharges (IEC 61000-4-2 and MIL STD 883, method 3015)
• Protection against electrical overstress (IEC 61000-4-4 and 5)
• Protection against surges below 600 W (10/1000 μs)

Package:

• SMA (71 mg)

• Peak pulse power:
• -400 W (10/1000 μs)
• -2.3 kW (8/20 μs)
• Stand-off voltage range from 5 V to 188 V
• Unidirectional and bidirectional types
• Low leakage current:
• -0.2 μA at 25 °C
• -1 μA at 85 °C
• Operating Tj max: 150 °C
• JEDEC registered package outline

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark.