{"product_id":"49e-linear-hall-effect-sensor-to-92-analog-arduino","title":"49E Linear Hall Effect Sensor TO-92 Analog Sensor","description":"\u003cstyle\u003e\n  .nzn-desc {\n    width: 100%;\n    max-width: 1400px;\n    margin: 0 auto;\n    font-family: inherit;\n    color: #101114;\n  }\n\n  .nzn-desc,\n  .nzn-desc * {\n    box-sizing: border-box;\n  }\n\n  .nzn-desc .nzn-tabs {\n    width: 100%;\n    max-width: 100%;\n    display: flex;\n    gap: 30px;\n    border-bottom: 1px solid #e7e7e7;\n    overflow-x: auto;\n    overflow-y: hidden;\n    scrollbar-width: none;\n    min-height: 55px;\n    align-items: flex-end;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .nzn-desc .nzn-tabs::-webkit-scrollbar {\n    display: none;\n  }\n\n  .nzn-desc .nzn-tab {\n    flex: 0 0 auto;\n    background: none;\n    border: 0;\n    padding: 16px 0;\n    font: inherit;\n    font-size: 14px;\n    font-weight: 800;\n    white-space: nowrap;\n    border-bottom: 3px solid transparent;\n    color: 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width: fit-content;\n      max-width: 100%;\n    }\n\n    .nzn-desc .nzn-checks li {\n      align-items: flex-start;\n      gap: 10px;\n      font-size: 14px;\n      text-align: left;\n    }\n\n    .nzn-desc .nzn-checks li::before {\n      margin-top: 2px;\n    }\n\n    .nzn-desc .nzn-uses {\n      grid-template-columns: 1fr;\n    }\n\n    .nzn-desc .nzn-specs div {\n      grid-template-columns: 1fr;\n      gap: 4px;\n      padding: 13px 10px;\n    }\n\n    .nzn-desc .nzn-section-title {\n      text-align: left;\n      padding-top: 0;\n      margin-bottom: 22px;\n    }\n\n    .nzn-desc .nzn-started {\n      padding: 20px 16px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"nzn-desc\"\u003e\n  \u003cdiv class=\"nzn-tabs\"\u003e\n    \u003cbutton class=\"nzn-tab is-active\" type=\"button\" data-tab=\"overview\"\u003eOverview\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"specifications\"\u003eSpecifications\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"getting-started\"\u003eGetting Started\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"uses\"\u003eCommon Uses\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"faqs\"\u003eFAQs\u003c\/button\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"nzn-card\"\u003e\n    \u003cdiv class=\"nzn-panel is-active\" data-panel=\"overview\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003cdiv class=\"nzn-overview\"\u003e\n          \u003cdiv class=\"nzn-overview-copy\"\u003e\n            \u003cp\u003eThe 49E is a linear analog Hall Effect sensor in a compact TO-92 package. Unlike digital Hall switches, it outputs a continuous analog voltage proportional to the strength and polarity of a detected magnetic field — making it ideal for position sensing, current measurement, magnetic field mapping, and motor feedback projects with Arduino, ESP32, and other microcontrollers.\u003c\/p\u003e\n\n            \u003cul class=\"nzn-checks\"\u003e\n              \u003cli\u003eAnalog (linear) output — proportional to magnetic field strength\u003c\/li\u003e\n              \u003cli\u003eDetects both North and South magnetic poles\u003c\/li\u003e\n              \u003cli\u003eQuiescent output at ½ VCC with no magnetic field\u003c\/li\u003e\n              \u003cli\u003eWide 3V – 6.5V operating voltage range\u003c\/li\u003e\n              \u003cli\u003eCompatible with 3.3V and 5V microcontrollers\u003c\/li\u003e\n              \u003cli\u003eCompact TO-92 package — breadboard friendly\u003c\/li\u003e\n              \u003cli\u003eNo external filtering required — low noise output\u003c\/li\u003e\n              \u003cli\u003eWorks with Arduino, ESP32 \u0026amp; Raspberry Pi analog inputs\u003c\/li\u003e\n            \u003c\/ul\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-started\"\u003e\n            \u003ch3\u003eQuick Wiring\u003c\/h3\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e1\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eFace the flat (marked) side toward you\u003c\/strong\u003e\n                \u003cp\u003eThe side with the \"49E\" marking should face toward you when identifying pins left to right.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e2\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eConnect VCC (Pin 1)\u003c\/strong\u003e\n                \u003cp\u003ePin 1 → 3V–6.5V supply. Use the same voltage as your microcontroller for direct analog compatibility.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e3\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eConnect GND (Pin 2)\u003c\/strong\u003e\n                \u003cp\u003ePin 2 → Ground.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e4\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eRead analog output (Pin 3)\u003c\/strong\u003e\n                \u003cp\u003ePin 3 → Analog input pin (e.g. A0 on Arduino). Output rests at ~½ VCC with no field present.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n        \u003cstrong\u003ePlease note:\u003c\/strong\u003e The 49E is an analog linear Hall sensor — it outputs a varying voltage, not a digital ON\/OFF signal. Connect to an analog input pin, not a digital one.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"specifications\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003ch3 class=\"nzn-section-title\"\u003eSpecifications\u003c\/h3\u003e\n\n        \u003cdiv class=\"nzn-specs\"\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eModel\u003c\/span\u003e\u003cstrong\u003e49E (SS49E compatible)\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eSensor Type\u003c\/span\u003e\u003cstrong\u003eLinear Analog Hall Effect Sensor\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003ePackage\u003c\/span\u003e\u003cstrong\u003eTO-92\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOperating Voltage (VCC)\u003c\/span\u003e\u003cstrong\u003e3.0V – 6.5V DC\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eSupply Current (typical)\u003c\/span\u003e\u003cstrong\u003e4.2mA – 8.0mA\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOutput Type\u003c\/span\u003e\u003cstrong\u003eAnalog voltage (linear, sourcing)\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eQuiescent Output Voltage\u003c\/span\u003e\u003cstrong\u003e½ × VCC (≈ 2.5V at 5V supply)\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eSensitivity\u003c\/span\u003e\u003cstrong\u003e2.5 mV\/Gauss (typical)\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eMin Output Voltage\u003c\/span\u003e\u003cstrong\u003e0.86V (North pole, strong field)\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eMax Output Voltage\u003c\/span\u003e\u003cstrong\u003e4.21V (South pole, strong field)\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eMax Output Current\u003c\/span\u003e\u003cstrong\u003e20mA\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eResponse Time\u003c\/span\u003e\u003cstrong\u003e3 µs\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003cstrong\u003e-40°C to +100°C\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eDimensions (incl. pins)\u003c\/span\u003e\u003cstrong\u003e17.5mm × 4mm × 1.52mm\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eWeight\u003c\/span\u003e\u003cstrong\u003eApprox. 0.11g\u003c\/strong\u003e\n\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n        \u003cstrong\u003ePlease note:\u003c\/strong\u003e Output voltage is linear and centred at ½ VCC. Sensitivity figures are typical — batch variance and temperature drift should be expected in precision applications.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"getting-started\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003cdiv class=\"nzn-started\"\u003e\n          \u003ch3\u003eGetting Started with Arduino\u003c\/h3\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e1\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eInsert into breadboard\u003c\/strong\u003e\n              \u003cp\u003eThe TO-92 package fits standard breadboards. The flat labelled face points toward you — pins are VCC, GND, OUT from left to right.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e2\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eConnect power and ground\u003c\/strong\u003e\n              \u003cp\u003eConnect Pin 1 (VCC) to your 5V or 3.3V rail. Connect Pin 2 (GND) to ground. Power the sensor at the same voltage as your MCU for best compatibility.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e3\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eConnect output to an analog pin\u003c\/strong\u003e\n              \u003cp\u003eConnect Pin 3 (OUT) to an analog input such as A0 on Arduino. Use analogRead() to read the sensor value.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e4\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eInterpret the reading\u003c\/strong\u003e\n              \u003cp\u003eWith no magnet present, the output reads ~512 (at 5V on a 10-bit ADC). Bring the South pole near the marked face to increase the value; North pole decreases it.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e5\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eExample Arduino code\u003c\/strong\u003e\n              \u003cp\u003eint val = analogRead(A0); — reads 0–1023. Map to Gauss using ~2.57 ADC steps per Gauss at 5V.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n        \u003cstrong\u003ePlease note:\u003c\/strong\u003e If powering the 49E at 5V and reading with a 3.3V MCU, add a voltage divider on the output pin to avoid exceeding the ADC input voltage limit.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"uses\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003ch3 class=\"nzn-section-title\"\u003eCommon Uses\u003c\/h3\u003e\n\n        \u003cdiv class=\"nzn-uses\"\u003e\n          \u003cdiv class=\"nzn-use\"\u003eLinear position sensing for sliders and mechanical assemblies\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eMotor RPM and rotational speed measurement\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eCurrent sensing via magnetic field detection\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eContactless potentiometer \/ joystick replacement\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eMagnetic field strength mapping and measurement\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eBrushless motor (BLDC) commutation feedback\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eDoor, lid, and drawer position detection\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eArduino and ESP32 analog sensing projects\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n        \u003cstrong\u003ePlease note:\u003c\/strong\u003e The 49E outputs an analog voltage — ideal for measuring field strength or continuous position. For simple ON\/OFF magnetic switching, a digital Hall sensor like the A3144 may be more suitable.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"faqs\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003ch3 class=\"nzn-section-title\"\u003eCommon Questions\u003c\/h3\u003e\n\n        \u003cdiv class=\"nzn-faq\"\u003e\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eIs the 49E a digital or analog sensor?\u003c\/strong\u003e\n            \u003cp\u003eThe 49E is an analog (linear) Hall sensor. It outputs a continuous voltage proportional to the detected magnetic field — not a simple HIGH\/LOW digital signal.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eWhat does the output do with no magnet present?\u003c\/strong\u003e\n            \u003cp\u003eWith no magnetic field, the output rests at approximately half the supply voltage (e.g. ~2.5V at 5V VCC). This is called the quiescent output voltage.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eHow do I connect this to Arduino?\u003c\/strong\u003e\n            \u003cp\u003eConnect VCC to 5V, GND to GND, and the output pin to any analog input (e.g. A0). Use analogRead() to read the value — it will return ~512 with no field and shift up or down as a magnet approaches.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eWhich pole increases vs decreases the output?\u003c\/strong\u003e\n            \u003cp\u003eBringing the South pole toward the marked face increases the output voltage toward VCC. The North pole decreases the output toward GND. The response is linear and symmetrical.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eIs this compatible with 3.3V systems?\u003c\/strong\u003e\n            \u003cp\u003eYes. The 49E operates from 3.0V to 6.5V, making it compatible with 3.3V systems like ESP32. Power the sensor at 3.3V so the output range stays within the ADC input limits.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eHow is this different from the A3144 or 41F sensors?\u003c\/strong\u003e\n            \u003cp\u003eThe A3144 and 41F are digital Hall switches — they output HIGH or LOW based on whether a magnetic threshold is exceeded. The 49E outputs a proportional analog voltage, allowing measurement of field strength and direction rather than just detection.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n        \u003cstrong\u003ePlease note:\u003c\/strong\u003e For ON\/OFF magnetic switching applications, consider our A3144 or 41F Hall Effect sensors. The 49E is best suited to analog measurement and proportional sensing tasks.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\n  document.addEventListener('click', function(event) {\n    const tab = event.target.closest('.nzn-desc .nzn-tab');\n    if (!tab) return;\n\n    const wrapper = tab.closest('.nzn-desc');\n    if (!wrapper) return;\n\n    const target = tab.getAttribute('data-tab');\n\n    wrapper.querySelectorAll('.nzn-tab').forEach(function(item) {\n      item.classList.remove('is-active');\n    });\n\n    wrapper.querySelectorAll('.nzn-panel').forEach(function(panel) {\n      panel.classList.remove('is-active');\n    });\n\n    tab.classList.add('is-active');\n\n    const panel = wrapper.querySelector('[data-panel=\"' + target + '\"]');\n    if (panel) panel.classList.add('is-active');\n  });\n\u003c\/script\u003e","brand":"NZN Electronics","offers":[{"title":"10 Pack","offer_id":42757477662816,"sku":"49E-HALL-TO92","price":2.99,"currency_code":"NZD","in_stock":true},{"title":"25 Pack","offer_id":42757477695584,"sku":"49E-HALL-TO93","price":5.49,"currency_code":"NZD","in_stock":true},{"title":"50 Pack","offer_id":42757477728352,"sku":"49E-HALL-TO94","price":7.89,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/49E_Product_Hero.png?v=1779316886","url":"https:\/\/www.nznelectronics.co.nz\/products\/49e-linear-hall-effect-sensor-to-92-analog-arduino","provider":"NZN Electronics","version":"1.0","type":"link"}