EX-31A

Allegro MicroSystems, Inc.
ACS711 - Current Sensor Sensor Evaluation Board
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1927-ND 5 1 $138.88 $138.88 $138.88 $138.88 $138.88 $138.88

APS12235LUAABU

Allegro MicroSystems, Inc.
5V HALL EFFECT LATCH
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1856-ND 0 $1.21 $0.76 $0.64 $0.50 $0.36 $0.30
element14 APAC APS12235LUAABU 1 1 * $0.84 * $0.69 * $0.69 * $0.52 * $0.36 * $0.36
Farnell APS12235LUAABU 1 12000 * $0.00 * $0.00 * $0.00 * $0.00 * $0.00 * $0.00
Newark APS12235LUAABU 4000 1 $0.79 $0.69 $0.69 $0.53 $0.34 $0.34

ACS770LCB-50U-PFF-T

Allegro MicroSystems, Inc.
CURRENT SENSOR 120KHZ CB-PFF-5; Quiescent Current:10mA; Bandwidth:120kHz; Sensor Case Style:PFF; No. of Pins:5; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Operating Temperature Min:-40 C; Operating Temperature Max:150 C ;RoHS Compliant: No
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1542-5-ND 0 1 $7.90 $6.24 $5.13 $4.44 $3.88 $3.88
Newark ACS770LCB-50U-PFF-T 0 816 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

CS72

Allegro MicroSystems, Inc.
Current Sensor 5A 1 Channel Hall Effect, Open Loop Bidirectional 8-SOIC (0.154", 3.90mm Width)
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-ACS724LLCTR-05AB-TDKR-ND 13048 $3.24 $2.77 $2.51 $2.41 $2.15 $2.05

CS75

Allegro MicroSystems, Inc.
Current Sensor 100A 1 Channel Hall Effect, Open Loop Bidirectional 5-CB Formed Leads, PFF
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1799-ND 19048 $7.94 $6.65 $6.13 $5.88 $5.29 $5.13

260K

Allegro MicroSystems, Inc.
LED Driver IC 1 Output Linear PWM Dimming 350mA 8-SOIC-EP
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1252-6-ND 9384 $2.83 $1.79 $1.52 $1.21 $0.89 $0.80

S1750

Allegro MicroSystems, Inc.
Hall Effect Sensor External Magnet, Not Included PC Pin
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-ATS17501PSGATN-SDFUYJCT-ND 5701 $4.73 $4.06 $3.70 $3.56 $2.74 $3.07

SR100

Allegro MicroSystems, Inc.
Hall Effect Sensor X, Y, Z Axis 10-DFN (3x3)
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1992-6-ND 11576 $1.49 $1.26 $1.13 $1.08 $0.95 $0.87

CT427-HSN820MR

Allegro MicroSystems, Inc.
Current Sensor 20A 1 Channel Magnetoresistive Bidirectional 8-SOIC (0.154", 3.90mm Width)
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-CT427-HSN820MRDKR-ND 6618 $3.31 $2.82 $2.56 $2.46 $2.19 $2.19

ACS70331EESATR-005B3

Allegro MicroSystems, Inc.
Current Sensor ±2% ±5A 1MHz 0.5mA 12-Pin QFN T/R
Distributor SKU Stock MOQ 1 10 50 100 1,000 10,000
DigiKey 620-1887-6-ND 12928 $2.10 $1.78 $1.61 $1.54 $1.41 $1.24
Arrow North American Components ACS70331EESATR-005B3 0 6000 $1.05
AVNET Europe ACS70331EESATR-005B3 6000 1500 * $2.32
element14 APAC ACS70331EESATR-005B3 15709 1 * $2.03 * $1.82 * $1.75 * $1.52 * $1.46 * $1.46
Farnell ACS70331EESATR-005B3 12789 1 * $2.36 * $1.88 * $1.81 * $1.61 * $1.54 * $1.54
Newark ACS70331EESATR-005B3 12789 6000 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
Win Source ACS70331EESATR-005B3 85000 12