Hall-Magnetschaltungs-Auswahltool

Enter magnet dimensions, material grade and operating temperature to directly compute the Hall operate stroke, release stroke and hysteresis; the dual-Hall ring scheme gives a quadrature phase-error budget and breaks the error into four items - air gap, mounting, threshold mismatch and ring pole pitch - so you know where the tolerance budget should go.

Kernel: surface-charge method; cross-checked against the axial closed-form solution with error < 0.1%; valid for near-field cases without magnetic return path.

Bauteil

ArtikelnummerNur Unipolar/Omnipolar

Einbauart

Magnet

Material

Durchmesser D

Dicke L

Einsatz

Temp.-Untergrenze

Temp.-Obergrenze

Vom Kunden geforderter Hub

Geometrieskizze

Hubergebnis

Schaltweg S_op—mm

Freigabehub S_rp—mm

Hysterese ΔS—mm

Gesamt-Temp-Hubband—mm

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Hub–Feld-Kurve

The horizontal axis is the magnet-to-chip travel, far on the left and near on the right. The horizontal dashed lines are the operate threshold Bop and release threshold Brp; the red dot marks the operate-stroke point and the green one the release-stroke point.

SC245X Vierstufen-Vergleich

Artikelnummer	Bop range (Gs)	S_op(mm)	S_rp(mm)	Gesamt-Temp-Band (mm)	Entscheidung

Compare grades under the same magnet and mounting. Higher-sensitivity parts give longer operating stroke but are also more sensitive to stray fields.

Device (two of same type)

ArtikelnummerNur Latch-Typ

Sensormodus

Mehrpolring

Polpaare P

Material

Outer radius Ro

Inner radius Ri

Dicke L

Luftspalt

Toleranzbudget

PCB mounting position

Luftspalt-Abweichung

Ring-Polteilungsfehler

Umgebungstemperatur

Quadratur-Zielgenauigkeit

Geometrieskizze

Quadratur-Ergebnis

Einbauwinkel—° mech

Abstand der zwei Bauteile—mm

Luftspalt-Feldspitze—Gs

Schlechteste Quadraturfehler—° el.

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Error-source breakdown

Fehlerquelle	Fehler (° elektr.)	Anteil	Leitungsmechanismus

Zwei Ausgangswellenformen

The horizontal axis is one full ring revolution = 360 deg mechanical. The upper half is the field‘s sensing component at the air gap; the two dashed lines are the operate thresholds +/-Bop. The lower half is the digitized output of the A/B comparators - the two quadrature high/low levels seen on a scope. One revolution holds P electrical periods (2P poles), so each channel shows P high and P low levels per turn; a larger P packs the pulses denser. The rising edges of the two square waves occur when the field crosses +/-Bop, ideally 90 deg electrical apart.

Polpaar-Sweep

P	Einbauwinkel (° mech)	Amplitude (Gs)	Fehlanpassung °	Bestück °	Luftspalt °	Schlechteste °	Abstand der zwei Bauteile (mm)	Entscheidung

Pole-pair count is the parameter customers change most often, and the same mechanical tolerance is amplified P times - this table directly judges whether a given ring scheme meets the target quadrature accuracy. The "two-device spacing" is the chord at 90 deg electrical; if it is smaller than the package footprint width it is flagged red, meaning the two devices cannot be placed side by side at that radiuscannot be placed side by side physically.

Bauteil

ArtikelnummerNach Typ gruppieren

Struktur

Magnet

Material

Durchmesser D

Dicke L

Luftspalt

Offset

Luftspalt-Toleranz

Temp.-Untergrenze

Temp.-Obergrenze

Ergebnis

Entscheidungskomponente—Gs

Raumtemp.-Marge—%

Schlechteste Marge über Temp.-Bereich—%

Raumtemp.-Entscheidung—

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Temperatursweep

Scan temperature at the tolerance upper-limit air gap. The solid line also serves as the vertical position; the red line toward -Bop is the worst-case threshold including tolerance.

Demotyp

Bauteil

Artikelnummer—

Magnet

Material

Durchmesser D

Dicke L

Hubbereich

Einsatz

Temperatur

Positions-Animation

Manuelles Positionieren

Wiedergabegeschwindigkeit

Below the position view is the field scale: the horizontal axis is the sensing component in Gauss (Gs); darker blocks mean stronger field and the sign shows field direction. The two vertical lines are the operate threshold Bop and release threshold Brp; the white dot is the measured field at the magnet‘s current position. The block beside the Hall in the figure shares the same colour scale as the ruler, so you can read them off directly.

Feld & Ausgangszustand

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Berechnete Beispiele (statisch, zitierfähig)

Results below are computed by the same kernel at build time with identical parameters — use them to cross-check trend and magnitude.

Beispiel: Näherungsschalter

φ10×5 mm cylindrical NdFeB 42SH, full temperature range -40 to 150 °C, stroke boundary under air-gap tolerance.

Artikelnummer	Bop typ. / max (Gs)	Einbauart	Schaltweg (mm)	Freigabehub (mm)	Hysterese (mm)	Gesamt-Temp-Hubband (mm)
SC2450	25 / 35	Stirnflächengegenüber	29.09	35.04	5.96	24.14 ~ 36.13
SC2451	100 / 120	Stirnflächengegenüber	17.13	18.27	1.14	14.88 ~ 19.35
SC2452	180 / 200	Stirnflächengegenüber	13.46	15.41	1.95	11.98 ~ 14.65
SC2455	220 / 250	Stirnflächengegenüber	12.34	13.78	1.44	10.84 ~ 13.63
SC2450	25 / 35	Seitlicher Streif	23.40	28.49	5.09	18.91 ~ 29.40
SC2451	100 / 120	Seitlicher Streif	7.84	7.96	0.11	7.57 ~ 13.29
SC2452	180 / 200	Seitlicher Streif	7.34	7.64	0.30	7.06 ~ 7.53
SC2455	220 / 250	Seitlicher Streif	7.14	7.39	0.25	6.81 ~ 7.37

Beispiel: Zwei-Hall-Quadratur

Multi-pole ring Ro 20 / Ri 14 / L 6 mm, air gap 2 mm, both Hall devices are SC2943, Mounting tolerance +/-0.1 mm, air-gap deviation +/-0.2 mm, ring pole-pitch error +/-1 deg, target quadrature accuracy +/-10 deg electrical.

Polpaare P	Sensormodus	Einbauwinkel (° mech)	Feldspitze (Gs)	Schwellwert-Fehlanpassung (°)	Bestückfehler (°)	Luftspalt-Abweichung (°)	Gesamt worst (°)	Quadratur ±10°
2	Radial	45.00	3187	0.04	0.52	1.40	2.96	PASS
2	Axial	45.00	2936	0.04	0.67	1.52	3.24	PASS
4	Radial	22.50	3221	0.07	1.04	2.98	5.09	PASS
4	Axial	22.50	3061	0.09	1.35	3.31	5.75	PASS
6	Radial	15.00	3063	0.11	1.56	4.98	7.65	PASS
6	Axial	15.00	2915	0.13	2.02	5.94	9.08	PASS
8	Radial	11.25	2779	0.14	2.08	7.24	10.47	FAIL
8	Axial	11.25	2582	0.17	2.70	8.93	12.80	FAIL
10	Radial	9.00	2449	0.18	2.60	9.62	13.41	FAIL
10	Axial	9.00	2195	0.22	3.37	12.03	16.62	FAIL
12	Radial	7.50	2118	0.23	3.13	12.08	16.43	FAIL
12	Axial	7.50	1820	0.29	4.04	15.13	20.46	FAIL

Magnet material temp drift

Magnetmaterial	Br@20°C (T)	Br@150°C (T)	Abfall	Max. Betriebstemp.
NdFeB N42	1.300	1.097	-15.6%	80 °C
NdFeB 42SH	1.300	1.114	-14.3%	150 °C
NdFeB N52	1.445	1.220	-15.6%	80 °C
Ferrite Y30	0.390	0.294	-24.7%	250 °C
Ferrite Y35	0.410	0.309	-24.7%	250 °C
SmCo YXG-26H	1.035	0.988	-4.5%	350 °C

If margin still worries you, or you want parameters tailored to your magnet and structure, just send the magnet drawing and mounting dimensions.

Auswahlanfrage senden

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