Build with BAT54SW — Datasheet Specs & AI Design Help

00 — Overview

What the BAT54SW does

The BAT54SW is a planar Schottky barrier diode featuring an integrated guard ring for stress protection, available in a compact SOT323 surface-mounted package. It supports a 30 V reverse voltage, handles 200 mA forward current, and maintains a typical forward voltage of 240 mV at 0.1 mA. The component exhibits a maximum reverse recovery time of 5 ns and a capacitance of 10 pF. Engineers typically use this diode for ultra high-speed switching, line termination, voltage clamping, and reverse polarity protection in various electronic circuits.

Next step

Start building with BAT54SW → 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

Datasheet parameters

Datasheet parameters for BAT54SW
Parameter	Min	Typ	Max	Conditions	Source
forward voltage	—	—	800 mV	IF = 100 mA; pulsed; tp≤ 300 μs; δ ≤ 0.02; Tamb = 25 °C; vf; Per diode	Nexperia datasheet, p. 1 — Table 1. Quick reference data
operating temperature (abs max)	-55 °C	—	150 °C	tamb; Per device; one diode loaded	Nexperia datasheet, p. 2 — Table 5. Limiting values
power dissipation (abs max)	—	—	200 mW	[2]; ptot; Per device; one diode loaded	Nexperia datasheet, p. 2 — Table 5. Limiting values
reverse voltage	—	—	30 V	Tj = 25 °C; vr; Per diode	Nexperia datasheet, p. 1 — Table 1. Quick reference data
forward current (abs max)	—	—	200 mA	if; Per diode	Nexperia datasheet, p. 2 — Table 5. Limiting values
reverse leakage current	—	—	2 µA	VR = 25 V; tp≤ 300 μs; δ ≤ 0.02; pulsed; Tamb = 25 °C; ir; Per diode	Nexperia datasheet, p. 1 — Table 1. Quick reference data
rectified current (abs max)	—	—	200 mA		Nexperia datasheet, p. 2 — Table 5. Limiting values
junction capacitance	—	—	10 pF	VR = 1 V; f = 1 MHz; Tamb = 25 °C; cd; Per diode	Nexperia datasheet, p. 3 — Table 7. Characteristics
reverse recovery time	—	—	5 ns	IF = 10 mA; IR = 10 mA; IR(meas) = 1 mA; RL = 100 Ω; Tamb = 25 °C; trr; Per diode	Nexperia datasheet, p. 3 — Table 7. Characteristics

02 — Alternatives

Closest matches to BAT54SW

BAT54WS 2.0× lower rectified current, 1.5× higher forward current, 1.2× higher forward voltage

1N4148W 5.0× lower junction capacitance, 3.3× higher reverse voltage, 2.0× higher power dissipation

1N4148WS 5.0× lower junction capacitance, 3.3× higher peak pulse current, 3.3× higher reverse voltage

1SS226 3.3× higher peak pulse current, 3.3× lower junction capacitance, 2.7× higher reverse voltage

BAS16 5.0× lower junction capacitance, 3.3× higher peak pulse current, 3.3× higher reverse voltage

BAV70 6.7× lower junction capacitance, 3.3× higher peak pulse current, 2.3× higher reverse voltage

BAT54HT1 4.0× lower reverse leakage current, 3.6× lower forward voltage, 1.5× higher forward current

BAT54SLT1G 4.0× lower reverse leakage current, 3.6× lower forward voltage, 1.3× lower junction capacitance

03 — FAQ

Frequently asked questions

What is the forward current if per diode?

The forward current is 200 mA if per diode.

What is the forward voltage (VF) of the BAT54SW at IF = 100 mA (pulsed; tp≤ 300 μs; δ ≤ 0.02; Tamb = 25 °C; per diode)?

The forward voltage is 800 mV.

What is the junction capacitance of the BAT54SW?

The junction capacitance is 10 pF at VR = 1 V; f = 1 MHz; Tamb = 25 °C; cd; Per diode.

What is the maximum operating temperature (tamb) for the BAT54SW when one diode is loaded per device?

The maximum operating temperature is 150 °C.

What is the power dissipation of the BAT54SW?

The power dissipation is 200 mW per device with one diode loaded.

What is the rectified current of the BAT54SW?

The rectified current is 200 mA.

What is the reverse leakage current (ir) per diode for the BAT54SW?

The reverse leakage current is 2 µA at VR = 25 V, tp≤ 300 μs, δ ≤ 0.02, pulsed, and Tamb = 25 °C.

What is the reverse recovery time (trr) of the BAT54SW per diode?

The reverse recovery time is 5 ns at IF = 10 mA; IR = 10 mA; IR(meas) = 1 mA; RL = 100 Ω; Tamb = 25 °C.

What is the reverse voltage rating for the BAT54SW?

The reverse voltage is 30 V at Tj = 25 °C per diode.