BAT54WS
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.
What the BAT54WS family does
The BAT54WS is a surface mount Schottky barrier diode available in SOD323 packages with lead-free plating options. It handles 30 V reverse voltage, 100 mA average forward current, and switches with 5 ns reverse recovery time. The device features a PN junction guard ring for transient and ESD protection. Engineers typically use it for reverse polarity protection, ultra-high-speed switching, and freewheeling applications in automotive and industrial circuits. It operates across a temperature range of -65 to +150 °C and meets AEC-Q101 standards for automotive reliability.
BAT54WS datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| output current | — | — | 100 mA | Marking Information | Diodes datasheet, p. 2 — Marking Information |
| forward voltage | — | 1 V | — | IF = 100 mA | Diodes datasheet, p. 1 — Product Summary (@ ) |
| operating temperature | -65 °C | — | 150 °C | Diodes datasheet, p. 2 — Thermal Characteristics | |
| power dissipation | — | — | 200 mW | (note 5); Thermal Characteristics | Diodes datasheet, p. 2 — Thermal Characteristics |
| reverse voltage | — | — | 30 V | Marking Information | Diodes datasheet, p. 2 — Marking Information |
| forward current | — | — | 300 mA | repetitive(note 5); Marking Information | Diodes datasheet, p. 2 — Marking Information |
| reverse leakage current | — | — | 2 µA | VR = 25V; (note 6); Marking Information | Diodes datasheet, p. 2 — Marking Information |
| rectified current | — | 100 mA | — | Diodes datasheet, p. 2 — Marking Information | |
| peak pulse current | — | 600 mA | — | @ t < 1.0 s | Diodes datasheet, p. 2 — Marking Information |
| junction capacitance | — | 10 pF | — | VR = 1.0 V, f = 1.0 MHz | Diodes datasheet, p. 2 — Marking Information |
| reverse recovery time | — | — | 5 ns | IF = 10mA through IR = 10mAto IR = 1.0mA, RL = 100Ω; Marking Information | Diodes datasheet, p. 2 — Marking Information |
BAT54WS frequently asked questions
What is the repetitive forward current for the BAT54WS under note 5?
The repetitive forward current is 300 mA.
What is the forward voltage of the BAT54WS at IF = 100 mA?
The forward voltage is 1 V at IF = 100 mA.
What is the junction capacitance of the BAT54WS at VR = 1.0 V and f = 1.0 MHz?
The junction capacitance is 10 pF.
What is the maximum operating temperature for the BAT54WS?
The maximum operating temperature is 150 °C.
What is the output current specified in the Marking Information for the BAT54WS?
The output current is 100 mA.
What is the peak pulse current of the BAT54WS?
The peak pulse current is 600 mA @ t < 1.0 s.
What is the power dissipation under note 5 in the Thermal Characteristics section?
The power dissipation is 200 mW.
What is the rectified current of the BAT54WS?
The rectified current is 100 mA.
What is the reverse leakage current of the BAT54WS at VR = 25V?
The reverse leakage current is 2 µA.
What is the reverse recovery time of the BAT54WS when IF = 10mA through IR = 10mAto IR = 1.0mA with RL = 100Ω?
The reverse recovery time is 5 ns.
What is the reverse voltage of the BAT54WS according to the Marking Information?
The reverse voltage is 30 V.
BAT54WSQ datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| output current | — | — | 100 mA | Marking Information | Diodes datasheet, p. 2 — Marking Information |
| forward voltage | — | 1 V | — | IF = 100 mA | Diodes datasheet, p. 1 — Product Summary (@ ) |
| operating temperature | -65 °C | — | 150 °C | Diodes datasheet, p. 2 — Thermal Characteristics | |
| power dissipation | — | — | 200 mW | (note 5); Thermal Characteristics | Diodes datasheet, p. 2 — Thermal Characteristics |
| reverse voltage | — | — | 30 V | Marking Information | Diodes datasheet, p. 2 — Marking Information |
| forward current | — | — | 300 mA | repetitive(note 5); Marking Information | Diodes datasheet, p. 2 — Marking Information |
| reverse leakage current | — | — | 2 µA | VR = 25V; (note 6); Marking Information | Diodes datasheet, p. 2 — Marking Information |
| rectified current | — | 100 mA | — | Diodes datasheet, p. 2 — Marking Information | |
| peak pulse current | — | 600 mA | — | @ t < 1.0 s | Diodes datasheet, p. 2 — Marking Information |
| junction capacitance | — | 10 pF | — | VR = 1.0 V, f = 1.0 MHz | Diodes datasheet, p. 2 — Marking Information |
| reverse recovery time | — | — | 5 ns | IF = 10mA through IR = 10mAto IR = 1.0mA, RL = 100Ω; Marking Information | Diodes datasheet, p. 2 — Marking Information |
BAT54WSQ frequently asked questions
What is the repetitive forward current for the BAT54WSQ?
The repetitive forward current is 300 mA (note 5).
What is the forward voltage of the BAT54WSQ when IF = 100 mA?
The forward voltage is 1 V when IF = 100 mA.
What is the junction capacitance of the BAT54WSQ at VR = 1.0 V and f = 1.0 MHz?
The junction capacitance is 10 pF.
What is the maximum operating temperature for the BAT54WSQ?
The maximum operating temperature is 150 °C.
What is the output current of the BAT54WSQ under Marking Information conditions?
The output current is 100 mA.
What is the peak pulse current for the BAT54WSQ?
The peak pulse current is 600 mA @ t < 1.0 s.
What is the power dissipation of the BAT54WSQ under the conditions specified in note 5 of the Thermal Characteristics?
The power dissipation is 200 mW.
What is the rectified current of the BAT54WSQ?
The rectified current is 100 mA.
What is the reverse leakage current of the BAT54WSQ when VR = 25V?
The reverse leakage current is 2 µA.
What is the reverse recovery time when IF = 10mA through IR = 10mA to IR = 1.0mA with RL = 100Ω?
The reverse recovery time is 5 ns.
What is the reverse voltage of the BAT54WSQ according to the Marking Information?
The reverse voltage is 30 V.