diodes

BAS40X

Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the BAS40X family does

The BAS40X is a surface mount Schottky barrier rectifier in the SOD-523 package. It handles a 40 V reverse voltage, 0.2 A average forward current, and 150 mW power dissipation. The device features fast switching speed and low junction capacitance of 4 pF. Engineers typically use this component in low voltage high frequency circuit signals. It meets MSL level 1 standards and is RoHS-compliant with a storage temperature range from -55 to +150 degrees Celsius.

Next step
Start building with BAS40X → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

BAS40X datasheet parameters

ParameterMinTypMaxConditionsSource
forward voltage (abs max) 380 mV IF = 1.0mA; • Maximum Ratings (Ta = 25°C Unless otherwise specified) Hongjiacheng datasheet, p. 2 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
operating temperature (abs max) 125 °C Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
power dissipation (abs max) 150 mW • Maximum Ratings (Ta = 25°C Unless otherwise specified) Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
reverse voltage (abs max) 40 V • Maximum Ratings (Ta = 25°C Unless otherwise specified) Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
forward current (abs max) 200 mA Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
reverse leakage current (abs max) 200 nA VR = 30V; • Maximum Ratings (Ta = 25°C Unless otherwise specified) Hongjiacheng datasheet, p. 2 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
rectified current (abs max) 200 mA (av); • Maximum Ratings (Ta = 25°C Unless otherwise specified) Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
peak pulse current (abs max) 600 mA Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
junction capacitance (abs max) 4 pF VR = 0V, f = 1.0MHz Hongjiacheng datasheet, p. 2 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
reverse recovery time (abs max) 5 ns IF = IR = 10mA, Irr = 0.1×IRRL = 100Ω; • Maximum Ratings (Ta = 25°C Unless otherwise specified) Hongjiacheng datasheet, p. 2 — • Maximum Ratings (Ta=25°C Unless otherwise specified)
02 — FAQ

BAS40X frequently asked questions

What is the maximum forward current for the BAS40X?

The maximum forward current is 200 mA.

What is the maximum forward voltage at IF = 1.0mA under Maximum Ratings (Ta = 25°C Unless otherwise specified)?

The forward voltage is 380 mV.

What is the junction capacitance of the BAS40X?

The junction capacitance is 4 pF at VR = 0V and f = 1.0MHz.

What is the maximum operating temperature for the BAS40X?

The operating temperature is 125 °C.

What is the peak pulse current rating for the BAS40X?

The peak pulse current is 600 mA.

What is the maximum power dissipation of the BAS40X at Ta = 25°C?

The maximum power dissipation is 150 mW at Ta = 25°C.

What is the maximum rectified current for the BAS40X at Ta = 25°C?

The maximum rectified current is 200 mA (av).

What is the maximum reverse leakage current for the BAS40X at VR = 30V?

The reverse leakage current is 200 nA at VR = 30V under Maximum Ratings conditions (Ta = 25°C Unless otherwise specified).

What is the reverse recovery time of the BAS40X?

The reverse recovery time is 5 ns when IF = IR = 10mA, Irr = 0.1×IRRL = 100Ω.

What is the maximum reverse voltage of the BAS40X at Ta = 25°C?

The maximum reverse voltage is 40 V.

03 — Alternatives

Closest matches to BAS40X

1SS355 3.2× higher forward voltage, 2.0× lower reverse leakage current, 2.0× lower forward current
1SS226 12.5× higher reverse leakage current, 3.3× higher peak pulse current, 2.6× lower operating temperature
BAT54HT1 2.6× lower operating temperature, 2.5× higher reverse leakage current, 1.9× higher junction capacitance
BAT54SLT1G 2.6× lower operating temperature, 2.5× higher reverse leakage current, 1.9× higher junction capacitance
BAT54T1G 3.6× lower operating temperature, 2.5× higher reverse leakage current, 1.9× higher junction capacitance
1N4148WS 5.0× higher reverse leakage current, 3.3× higher peak pulse current, 2.6× lower operating temperature
1SS181 3.3× higher peak pulse current, 2.6× lower operating temperature, 2.5× higher reverse leakage current
BAS16 5.0× higher reverse leakage current, 3.3× higher peak pulse current, 2.6× lower operating temperature
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