SS351AT - Honeywell Sensing and Control

Installation Instructions for the

SS351AT/SS451A/SS551AT

Omnipolar Digital Hall-Effect Sensor ICs

ISSUE 2

50046920

Sensing and Control

GENERAL INFORMATION

The SS351AT, SS451A and SS551AT are omnipolar devices,

meaning that they may be turned on (output low) by either a

North pole or a South pole. The device will turn off (output

high) when the magnetic field is removed.

CAUTION

ELECTROSTATIC DISCHARGE

DAMAGE

This component is sensitive to

electrostatic discharge (ESD).

Take normal ESD precautions in

handling this product to prevent

ESD-induced damage and/or

degradation,

Failure to comply with these

instructions may result in

product damage.

SOLDERING/ASSEMBLY

CAUTION

SOLDERING INSTRUCTIONS

Ensure leads are adequately supported during any

forming/shearing operation so that they are not stressed

inside the plastic case.

Limit exposure to high temperatures.

Failure to comply with these instructions may result in

product damage.

Surface-mount (SS351AT and SS551AT): Use an infrared

reflow process with temperatures of 245 °C [473 °F] peak for

10 s max.

Through-hole leads (SS451A): Wave solder at 250 C to

260 C [482 F to 500 F] for 3 s max.

Table 1. Absolute Maximum Ratings

Characteristic

Min.

Typ.

Max.

Unit

Supply voltage

-28.0

–

28.0

Applied Output

Voltage

-0.5

–

28.0

Output Current

–

Magnetic Flux

–

no limit

Gauss

Note 1: The magnetic field strength (gauss) required to cause

the switch to change state (operate and release) will be as

specified in the magnetic characteristics. To test the switch

against the specified magnetic characteristics, the switch must

be placed in a uniform magnetic field.

NOTICE

Absolute maximum ratings are the extreme limits that the

device will withstand without damage to the device.

However, the electrical and mechanical characteristics are

not guaranteed as the maximum limits (above

recommended operating conditions) are approached, nor

will the device necessarily operate at absolute maximum

ratings.

Figure 1. SS351AT Rated Supply Voltage vs Temperature

Figure 2. Current Sinking Output Block Diagram

Figure 3. Typical SS351AT/SS451A/SS551AT Magnetic

Performance vs Temperature

Ss351AT/SS451A/SS551AT

Issue 2 50046920

2 Honeywell Sensing and Control

Table 2. SS351AT/SS451A/SS551AT Specifications (At Vs=3.0 Vdc to 24 Vdc, 20 mA load, TA=-40 °C to 150 °C [-40 °F to 257 °F].)

Characteristic

Condition

Minimum

Typical

Maximum

Unit

Supply voltage1:

Vdc

SS451A/SS551AT

-40 °C to 150 °C [-40 °F to 302 °F]

–

SS351AT

-40 °C to 125 °C [-40 °F to 257 °F]

–

SS351AT

150 °C [302 °F]

–

Supply current

Vsupply = 5 V at 25 °C [77 °F]

Vsupply = 3 V at 25 °C [77 °F]

–

4.5

3.5

–

Output current

–

20.0

Vsat

at 20 mA, Gauss > Bop positive

or Gauss < Bop negative

–

0.4

Output leakage current

Gauss > Bop+ or < Bop-

–

µA

Output switching time:

rise

fall

Vsupply = 12 V at 25 °C [77 °F],

RL =1.6 kOhm, CL = 20 pF

–

1.5

µs

Thermal resistance:

–

°C/W

SS451A

–

233

–

SS351AT

–

303

–

SS551AT

–

210

–

Operate:

positive

negative

–

-135

-85

135

-35

Gauss

Release:

positive

negative

–

-120

-40

120

-10

Gauss

Differential

–

Gauss

Operating temperature

–

-40 [-40]

–

150 [302]

°C [°F]

Storage temperature

–

-40 [-40]

–

150 [302]

°C [°F]

Note 1: See Figure 1.

Figure 4. Sample Wiring Diagrams: Sinking Output Sensor

Issue 2 50046920

Figure 5. SS351AT Mounting/Tape and Reel Dimensions (For reference only. mm/[in].)

1,45

[0.057] 1,20

[0.047] 0,787

[0.031]

0,413

[0.016]

0,77

[0.030]

NOMINAL

TO IC

SENSING

SURFACE

GND

(-)

2,90

[0.114]

VCC

(+)

OUTPUT

3X 0,50

[0.20]

1,90

[0.075]

0,95

[0.037]

NOMINAL

IC CENTER

0,60

[0.024]

1,60

[0.063]

2,80

[0.110]

Figure 6. SS451A Mounting Dimensions (For reference only. mm/[in].)

2,5

[0.100]

1,6

[0.062]

3X 0,3

[0.015]

0,76

[0.03]

4,1

[0.161]

2X 1,3

[0.050] 3X 0,43

[0.017]

3X 0,38

[0.015]

3.0

[0.118]

GNDVS OUT

14,61

[0.575]

1,83

[0.072]

0,46

[0.018] NOMINAL

TO IC

SENSING

SURFACE

NOMINAL

IC CENTER

Issue 2 50046920

Sensing and Control

Honeywell

1985 Douglas Drive North

Golden Valley, MN 55422

http://sensing.honeywell.com

50046920-2-EN

October 2012

Figure 7. SS551AT Mounting/Tape and Reel Dimensions (For reference only. mm/[in].)

4,5

[0.18]

4,4

[0.17]

4,2

[0.16]

1,7

[0.07]

2X 1,5

[0.06] 3X 0,4

[0.02]

1,4

[0.054]

0,05

[0.002]

2,4

[0.09]

2,5

[0.10]

0,1

[0.01]

0,4

[0.016]

NOMINAL

HALL EFFECT

IC CENTER

TYP. TO HALL-

EFFECT

SENSING

SURFACE

Ø 178,0

[7.01]

Ø 33,0

[1.30]

Ø 13,0

[0.51]

3X 1,5

[0.06]

12,2

[0.48]

18,4

[0.72]

50,0

[1.97]

Ø 1,5

[0.06]

4,0

[0.16]

8,0

[0.31]

2,0

[0.08]

5,0

[0.20]

5,5

[0.22] 12,2

[0.48]

4,6

[0.18]

8,0

[0.315]

5,8

[0.230]

2,0

[0.08]

2,4 MAX.

[0.9] 0,4 MAX.

[0.16]

0,7

[0.004]

TOP COVER

TAPE

WARNING

PERSONAL INJURY

DO NOT USE these products as safety or emergency stop

devices or in any other application where failure of the

product could result in personal injury.

Failure to comply with these instructions could result

in death or serious injury.

WARRANTY/REMEDY

Honeywell warrants goods of its manufacture as being free of

defective materials and faulty workmanship. Honeywell’s

standard product warranty applies unless agreed to otherwise

by Honeywell in writing; please refer to your order

acknowledgement or consult your local sales office for specific

warranty details. If warranted goods are returned to Honeywell

during the period of coverage, Honeywell will repair or replace,

at its option, without charge those items it finds defective. The

foregoing is buyer’s sole remedy and is in lieu of all other

warranties, expressed or implied, including those of

merchantability and fitness for a particular purpose. In no

event shall Honeywell be liable for consequential, special,

or indirect damages.

While we provide application assistance personally, through

our literature and the Honeywell web site, it is up to the

customer to determine the suitability of the product in the

application.

Specifications may change without notice. The information we

supply is believed to be accurate and reliable as of this printing.

However, we assume no responsibility for its use.

SALES AND SERVICE

Honeywell serves its customers through a worldwide network

of sales offices, representatives and distributors. For

application assistance, current specifications, pricing or name

of the nearest Authorized Distributor, contact your local sales

office or:

E-mail: info.sc@honeywell.com

Internet: http://sensing.honeywell.com

Phone and Fax:

Asia Pacific +65 6355-2828

+65 6445-3033 Fax

Europe +44 (0) 1698 481481

+44 (0) 1698 481676 Fax

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+1-305-883-8257 Fax

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+1-815-235-6847

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