What are the primary applications for the SS34?

It is commonly used in free-wheeling circuits, secondary rectification, and reverse polarity protection.

What are the key specifications of the SS34?

Key specs include a 40V VRRM, 3A IF(AV), 500mV forward voltage, and a 100A surge current capability.

What should engineers consider when using the SS34?

Engineers should account for thermal dissipation, as the device is mounted on a PCB. Refer to the derating curves in the datasheet.

What should sourcing teams check before buying SS34?

Check lifecycle (Active), compliance data, distributor availability, and approved-source coverage. Current sourcing signal: low; readiness: high_availability.

SS34 Datasheet, Alternatives & Specs | onsemi

AI summary

The SS34 is a reliable 40V, 3A Schottky rectifier in an SMC package, ideal for power management and protection circuits.

Best for

Power supplies
Reverse polarity protection
Secondary rectification

Avoid if

Applications exceeding 40V reverse voltage
Extremely space-constrained designs requiring smaller than SMC packages

Check before use

Thermal dissipation requirements
PCB layout for SMC footprint

Key specifications

Reverse Voltage: 40 V
Forward Current: 3 A
Forward Voltage: 500 mV
Package: SMC

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: nan
MSL: nan
ECCN: EAR99
HTSUS: 8541.10.0080

Application

Power ManagementIndustrial

Datasheet

2305231206_onsemi-SS34_C154551.pdf

800 KB

Datasheet AI

CAD Models

EDA symbol, PCB footprint, and 3D model for this component. Supported tools include Altium, KiCad, Eagle, and more.

EDA Symbol

Schematic symbol for your EDA tool

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PCB Footprint

Land pattern for PCB layout

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3D Model

STEP file for mechanical design

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Alternative components

Part	Details	Match
MBRS340T3Gonsemi	Pin-compatible Schottky rectifier from the same manufacturer with identical 40V, 3A ratings in an SMC package.	Needs validation

SS34CMDD	Cross-vendor pin-compatible Schottky rectifier with identical 40V, 3A ratings in an SMC package.	Needs validation
SS54CMDD	A potential upgrade with a higher 5A current rating in the same 40V, SMC package family.	Needs validation
B540CFUXINSEMI	Form-fit alternative with higher 5A current but slightly higher forward voltage. Review for efficiency-sensitive designs.	Needs validation
B560CFUXINSEMI	Alternative with higher 60V/5A ratings but a higher forward voltage (0.7V), requiring performance validation.	Needs validation

Design and risk insights

Questions & answers

The SS34 is a Schottky rectifier designed for high-efficiency, low-power-loss applications, featuring a 40V reverse voltage and 3A forward current capacity.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Alternative components

Design and risk insights

Questions & answers

What is the SS34?+×

What are the primary applications for the SS34?+×

What are the key specifications of the SS34?+×

What should engineers consider when using the SS34?+×

What should sourcing teams check before buying SS34?+×