JIUYOU Primary Agent Three wire voltage type bipolar latch Hall switch sensor JYM27121SO
- Model：
- JYM27121SO
- Brand：
- JIUYOU
- Batch No：
- JYM27121, 双极锁存霍尔，18Gs 超低阈值锁存霍尔芯片，超微型 BLDC 电机换向霍尔，24V 宽压霍尔，超薄磁钢弱磁传感器，便携超薄电动工具霍尔，微型流量检测霍尔
- Desc：
- JYM27121 3-wire bipolar latching hall IC with symmetrical ±18Gs threshold, 2.8~24V wide voltage, -40~150℃ junction temp, triple ESD & thermal protection, TO92/SOT23 packages for miniature BLDC motors & power tools.
- Stock：
- 210000 只
JYM27121 3-Wire Wide-Voltage 18Gs Ultra-Low Threshold Bipolar Latching Hall Switch IC
Product Description
The JYM27121 series is an ultra-high-sensitivity ultra-low-threshold bipolar latching hall switch sensor IC manufactured via advanced 0.18μm BCDMOS wafer technology. The monolithic die integrates full analog & digital signal chain circuits: voltage regulator, under-voltage lockout (UVLO), differential signal amplifier, offset cancellation, magnetic switching threshold temperature compensation, voltage comparator, push-pull output driver and output current limiter. Mechanical stress induces negligible magnetic parameter drift, delivering superior EMI immunity and long-term operational stability under wide high-low temperature industrial & automotive auxiliary lighting working conditions. Its 18Gs ultra-low magnetic threshold is optimized for miniature BLDC motors equipped with ultra-thin magnetic steel rotors and tiny air gap lightweight designs.
It supports universal industrial DC supply from 2.8V to 24V, with operating junction temperature spanning -40℃ up to 150℃, perfectly matching harsh high-temperature environments of miniature industrial equipment, lithium portable power tools and micro fluid flow detection devices. Two standardized packages are available: TO-92S through-hole and SOT23-3L surface mount device. Both packages fully comply with RoHS (EU) 2015/863 environmental directive to meet global export compliance requirements for all compact motor, lighting and consumer OEM manufacturers.
JYM27121 Key Electrical Specifications (Ta=25℃ Ambient Temperature)
| Parameter Name | Symbol | Specifications | Unit |
|---|---|---|---|
| Wafer Process Technology | – | 0.18μm BCDMOS | – |
| Operating Supply Voltage | VDD | 2.8 ~ 24 | V |
| Typical Quiescent Current | ICC | 1.8 | mA |
| Magnetic Operate Point | BOP | 18 | Gs |
| Magnetic Release Point | BRP | -18 | Gs |
| HBM ESD Protection Rating | VESD | ±8 | kV |
| Operating Junction Temperature Range | Tj | -40 ~ 150 | ℃ |
| On-Chip Protection Functions | – | Thermal Shutdown, Reverse Polarity Protection, Output Current Limiting | – |
| Available Package Types | – | TO-92S, SOT23-3L | – |
| Environmental Compliance Standard | – | RoHS (EU) 2015/863 | – |
Important Notice: Never input supply voltage over the maximum 24V rating, overvoltage will cause permanent irreversible IC damage. SOT23-3L SMD package is recommended for enhanced PCB thermal dissipation under continuous high-temperature operation of compact high-power BLDC motor equipment. This model features bipolar latching structure with positive/negative magnetic field trigger & reset, dedicated hall device for miniature 3-phase brushless motor commutation; 18Gs ultra-low standard magnetic threshold matches ultra-thin magnet rotor collocation for lightweight mini motor schemes.
IC Package Marking Sample
SOT23-3L marking code: SO; TO-92S marking code: UA
JYM27121 IC Internal Functional Block Diagram
Internal circuit modules: Power regulator unit, under-voltage lockout circuit, hall sensing element, offset cancellation circuit, magnetic threshold temperature compensation circuit, signal amplifier, voltage comparator, output driver stage, output current limiting protection, thermal shutdown protection, reverse input voltage protection circuit.
Two Sets of Standard Typical Application Circuits
Application Circuit 1: Basic Standard Wiring Reference Schematic
Recommended load resistance RL: 1kΩ~10kΩ, power supply decoupling capacitor CP=10nF, output filter capacitor CL=4.7nF. Mount all capacitors as close as possible to IC pins to suppress high-frequency switching noise and stabilize ultra-low-threshold latching magnetic switching without jitter.
Application Circuit 2: Anti-EMI Noise Suppression Solution for Disturbed Power Rails
Designed for industrial equipment with severe miniature BLDC motor EMI interference & large power supply ripple. Add series current-limiting resistor R1=100Ω on VDD input, parallel CP=10nF between supply pin and GND, parallel CL=4.7nF between output pin and GND. Place all capacitors adjacent to IC pins to greatly improve system EMI immunity and avoid false magnetic state flip during mini motor operation. Recommended parameters: R1=100Ω, CP＝10nF, CL＝4.7nF.
Installation Operation Guidelines: Wear ESD wrist strap throughout soldering process for full electrostatic discharge protection. Align the IC sensing surface facing the mini motor magnet pole; bipolar latching hall relies on N/S poles for set & reset respectively. Add large-area copper pour on PCB layer for thermal dissipation under long-term continuous high-temperature working conditions.
Ordering Part Numbers, Packages & Standard Tape-and-Reel Specifications
| Package Type | Operating Temperature Range | Complete Order PN | Standard Packaging Format | Package Marking Code |
|---|---|---|---|---|
| TO-92S Through-Hole | -40℃ ~ 150℃ | JYM27121UA | Tape and Reel, 1000 PCS per reel | UA |
| SOT23-3L SMD | -40℃ ~ 150℃ | JYM27121SO | Tape and Reel, 3000 PCS per reel | SO |
Typical Application Market Segments
● Industrial contactless solid-state magnetic limit switches
● Miniature 3-phase small BLDC motor commutation position sensing (core lightweight motor application)
● Lithium battery portable power tools & mini garden equipment motor position feedback
● Magnetic flow sensors for micro liquid & gas flow monitoring
● Miniature tachometers & low RPM rotation speed detection devices
● Small object long-distance proximity sensors & presence detection switches
● Micro linear displacement & low-magnetism rotational angle position sensing
● Automotive interior & auxiliary exterior lighting position feedback sensors
FAQ Common Technical & Global Procurement Inquiries
Q1: Can JYM27121 be directly powered by 24V industrial DC power supply?
A1: Yes, the IC maximum supply rating is 24V and runs stably under no-load 24V input. Compact BLDC motor equipment generates frequent voltage spikes, an RC filter circuit is strongly recommended to prevent IC breakdown and ultra-low-threshold magnetic false triggering caused by high-voltage pulses.
Q2: Can the IC operate continuously inside high-temperature mini motor housings at rated 150℃ junction temperature?
A2: 150℃ only serves as transient peak rating. For long-term continuous operation above 140℃ junction temperature, select the SOT23 SMD package and expand PCB copper pour area for better heat dissipation performance.
Q3: What is the selection difference between ultra-low-threshold bipolar latching hall (JYM27121), low-threshold latching hall (JYM27122) and standard latching hall (JYM27123) & unipolar hall (JYM27111 / JYM27112 / JYM27113)?
A3: JYM27121 is bipolar latching type with ultra-symmetrical 18Gs threshold, suitable for miniature BLDC motors with ultra-thin magnet rotors & tiny air gaps; JYM27122 is standard 30Gs latching hall for regular thin magnet medium-power motors; JYM27123 is 50Gs standard latching hall for regular thick magnet high-power motors; unipolar hall only responds to single-pole magnetic field, mostly used for one-way proximity detection and micro weak magnetic sensing. Latching type JYM27121 is prioritized for lightweight low-magnet mini motor commutation scenarios.
Q4: Will reversed VDD & GND polarity instantly destroy the hall IC?
A4: Built-in reverse polarity protection avoids damage during short-duration reverse connection. Long-term reverse power supply is not suggested, which will shift electrical parameters and deviate magnetic latching threshold, leading to motor step loss and commutation disorder during operation.
Q5: How to request free samples, official datasheets and reference schematic files?
A5: Contact our global sales hotline +86 180 1870 3531, mark part number JYM27121. We supply free original factory engineering test samples, complete official datasheets and two sets of standard hardware application schematics upon client request.
About GS-Micro Semiconductor
Founded in 2023 with predecessor Lumenchip established in 2010, GS-Micro Semiconductor (Shenzhen) Co., Ltd. is headquartered in Shenzhen, a professional tier-1 authorized electronic component distributor. We integrate authorized IC distribution, customized hardware technical solutions and one-stop full BOM material supply service for worldwide OEM & ODM manufacturers of miniature motors, industrial control and lighting.
We hold tier-1 distribution authorization from dozens of IC manufacturers including JIUYOU MICRO, DONGWOON Korea, CR MICRO, ASR Microelectronics and more. Our product portfolio covers full-gradient 25/40/70/120Gs unipolar hall sensors, 18/30/50Gs bipolar latching hall sensors, VCM driver ICs, power management ICs, power discrete devices and AI voice processing chips. We deliver complete hardware supporting solutions for industrial miniature equipment, portable consumer goods, automotive auxiliary lighting and IoT industries globally.
Core Corporate Values: People-Oriented, Customer-Centric, Focus on Value Delivery. Full series hall ICs are stocked with sufficient genuine factory inventory with stable lead time. Free professional hardware technical support is available for all global buyers.
Official Website: https://www.gs-micro.com
JYM27121 Sample Request, Bulk Quotation & Custom Mini Weak-Magnetic Detection / BLDC Motor Solution Technical Support
Sales Hotline: +86 180 1870 3531 (Dedicated Account Manager for Industrial Ultra-Low-Threshold Latching Hall Global Business)
Business WhatsApp / WeChat: gsmicro_semi (Remark: JYM27121 18Gs Ultra-Low-Threshold Bipolar Latching Weak Magnetic Hall IC Inquiry)
Business Email: sales@gs-micro.com
Service Hours: Monday-Friday 09:00-18:00 GMT+8. Free official datasheets, PCB layout guidance, custom small BLDC motor & tiny magnetic sensing automotive lamp project evaluation service are provided for all overseas clients.
Page Keywords: JYM27121,bipolar latching hall switch,18Gs ultra symmetrical low threshold hall sensor,24V wide voltage hall IC,miniature 3-phase BLDC motor commutation hall chip,portable power tool latching hall,automotive auxiliary lighting position sensor,high temperature latching hall switch,TO92S SOT23-3L hall sensor,GS-Micro authorized tier 1 distributor
JYM27121 High-Sensitivity Bipolar Latch Hall-Effect Switch Sensor | Wide Voltage 2.8-24V Industrial-Grade Hall Sensor Chip
JYM27121 is a 3-wire voltage-mode bipolar latch Hall-effect switch sensor designed with 0.18μm BCDMOS technology, featuring magnetic sensitivity Bop=18Gs, Brp=-18Gs. It offers wide voltage operation, high-temperature endurance, high ESD protection, and multiple built-in safeguards. Optimized for industrial motor commutation, speed detection, and position sensing, it provides stable drop-in replacement for mainstream Hall devices with superior cost-performance and reliability.
Key Product Advantages
Built on advanced 0.18μm BCDMOS process for excellent parameter consistency. Wide operating voltage range of 2.8V~24V with friendly low-voltage start-up. Typical supply current of 1.8mA for low power consumption. Integrated magnetic switch point temperature compensation ensures stable performance across full temperature range. ESD protection of ±8kV, plus over-temperature protection, reverse power protection, and output current limiting for robust industrial operation. Magnetic switching points are minimally affected by supply voltage for high detection accuracy. Available in TO-92S and SOT23-3L packages, RoHS compliant.
Key Parameter Table
| Parameter | Symbol | Typical Value | Unit |
| Operating Voltage | VCC | 2.8~24 | V |
| Supply Current | ICC | 1.8 | mA |
| Operate Point | Bop | 18 | Gs |
| Release Point | Brp | -18 | Gs |
| ESD(HBM) | VESD | ±8 | kV |
| Junction Temperature | TJ | -40~150 | ℃ |
Pin Definition
| Pin Name | TO-92S(UA) | SOT23-3L(SO) | Description |
| VCC | 1 | 1 | Power Supply 2.8~24V |
| GND | 2 | 3 | Ground |
| OUT | 3 | 2 | NMOS Open Drain, External Pull-up Resistor Required |
Internal Block Diagram
Typical Application Circuit
Typical Application Circuit 1: Recommended external pull-up resistor RL at OUT pin is 1kΩ~10kΩ, CP=10nF, CL=4.7nF. Typical Application Circuit 2: For noisy power supply environments, a 100Ω resistor in series at the power input and filter capacitors placed close to the chip improve anti-interference performance.
Package Information & Dimensional Drawing
TO-92S(UA): 1000 pcs/bag, through-hole package, suitable for manual soldering and wave soldering. SOT23-3L(SO): 3000 pcs/reel, surface-mount package, suitable for automated SMT assembly. Package dimensions in mm; both TO-92S and SOT23-3L are standard 3-pin packages compatible with mainstream PCB designs.
Ordering Information
| Part Number | Package | Packing Quantity | Junction Temp. Range |
| JYM27121UA | TO-92S | 1000 pcs/bag | -40~150℃ |
| JYM27121SO | SOT23-3L | 3000 pcs/reel | -40~150℃ |
Applications
3-Phase BLDC Motor Commutation Control. Power Tool Drive & Protection. Flow Sensor Signal Acquisition. Tachometer & Speed Detection. Proximity Detection, Linear Position Sensing, Angular Position Sensing. Industrial Solid-State Switches & Position Sensing Modules.
Compatible Replacement & Advantage Comparison
Direct drop-in replacement for mainstream bipolar latch Hall devices: A1203, AH3242, SH1881, ES1226, TLE4961, etc.
JYM27121 Advantages: Operating voltage down to 2.8V covers more low-voltage applications. Junction temperature range -40~150℃, higher than standard 125℃ devices for better high-temperature stability. Symmetrical magnetic sensitivity Bop=18Gs, Brp=-18Gs for precise latching. Integrated over-temperature, reverse polarity, and current limiting protections enhance long-term reliability. Stable domestic original supply with superior cost-performance and reliable lead times.
Keywords
JYM27121, bipolar latch Hall switch, high-sensitivity Hall sensor, 18Gs Hall chip, wide voltage Hall sensor, 2.8-24V Hall, industrial-grade Hall, BLDC motor Hall, speed detection Hall, TO-92S Hall, SOT23-3L Hall, domestic Hall chip
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