My Inquiry
My Account
Diodes Incorporated AH175-PG-A-B
- Part No.:
- AH175-PG-A-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP, Formed Leads
- Datasheet:
-
AH175-PG-A-B.pdf
- Description:
- MAGNETIC SWITCH LATCH 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,995
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AH175-PG-A-B from Diodes Incorporated is a bipolar Hall-effect latch sensor designed for high-temperature rotor position and RPM sensing in brushless DC motors. It operates from 3.5V to 20V, delivers 25mA sink current, features open-collector output with 300mV saturation voltage at 10mA, and supports -40°C to +150°C ambient operation in SIP-3 package.
For engineers reviewing the AH175-PG-A-B datasheet, AH175-PG-A-B pinout, AH175-PG-A-B application, or AH175-PG-A-B equivalent, key selection criteria include magnetic operate/release points (Bop/Brp), thermal derating curves for SIP-3, reverse polarity protection, and compatibility with three-phase Hall motor commutation logic.
Technical Context
The AH175 integrates a Hall voltage generator, amplifier, comparator with built-in hysteresis (30–120 Gauss), and open-collector pre-driver stage. Its internal band-gap regulator enables stable operation across 3.5–20V supply while compensating for temperature drift in magnetic thresholds.
Switching behavior is defined by bipolar latching: output pulls low when South-pole flux exceeds Bop (15–60 Gauss, A-grade), remains latched until flux reverses and falls below Brp (-60 to -15 Gauss), ensuring noise-immune edge detection in rotating-field environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.5V to 20V DC - supports direct connection to automotive battery rails without external regulation |
| Output Sink Current | 25mA - drives standard logic-level inputs or small-signal MOSFET gates directly |
| Operating Temperature | -40°C to +150°C - qualified for under-hood motor control and industrial actuator environments |
| Magnetic Hysteresis | 30–120 Gauss - prevents chatter during slow or noisy field transitions in encoder applications |
| Output Saturation Voltage | ≤400mV at 10mA - ensures reliable low-state logic recognition with minimal power loss |
| Power Dissipation (SIP-3) | 550mW at 25°C, derates to 0mW at 150°C - defines maximum continuous drive capability in sealed enclosures |
Pinout & Package
The AH175-PG-A-B is housed in SIP-3 (Straight Lead, Bulk Pack) package with 3-pin vertical lead frame, optimized for through-hole mounting in high-vibration motor assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc | Positive Power Supply | Input for 3.5–20V regulated or unregulated rail; powers internal band-gap regulator and analog front-end |
| GND | Ground Reference | Common return path for Hall sensor, amplifier, comparator, and output stage; requires low-impedance PCB connection |
| OUT | Open-Collector Output | Sinks up to 25mA to GND when latched; requires external pull-up resistor to define logic-high level and voltage domain |
Key Features
| Feature | Design Value |
|---|---|
| Built-in Power Reverse Protection | Withstands reverse supply polarity up to -20V without damage - eliminates need for external series diode in battery-connected systems |
| Temperature-Compensated Band-Gap Regulator | Maintains stable internal bias over -40°C to +150°C - ensures consistent Bop/Brp thresholds and output timing across full operating range |
| Open-Collector Pre-Driver Architecture | Enables flexible interface to 3.3V, 5V, or 12V logic domains via external pull-up - simplifies level-shifting in mixed-voltage motor controllers |
| Lead-Free & Halogen-Free Construction | Meets RoHS 3 (2015/863/EU) and IATF 16949 manufacturing requirements - suitable for automotive PPAP and industrial green compliance programs |
Applications
| Brushless DC Motor Commutation | Rotor Position Sensing |
|---|---|
Use Scenario: Detecting magnetic pole transitions on permanent magnet rotors in HVAC blowers and power tools. IC Role / Device Role / Timing Role: Provides synchronized digital commutation signals to gate drivers for precise 120° phase switching. Use Value: Enables accurate zero-crossing detection with 30–120 Gauss hysteresis, reducing torque ripple and acoustic noise in closed-loop motor control. | Use Scenario: Monitoring angular position of crankshafts or camshafts in engine management systems. IC Role / Device Role / Timing Role: Latches magnetic state changes to generate deterministic timing edges for ignition and fuel injection sequencing. Use Value: Delivers repeatable Bop/Brp thresholds over -40°C to +150°C, ensuring reliable timing under thermal stress without recalibration. |
| Current Switch Monitoring | RPM Detection in Industrial Pumps |
Use Scenario: Sensing magnetic field generated by current-carrying conductors in overload protection circuits. IC Role / Device Role / Timing Role: Acts as non-contact current switch with hysteresis to prevent false tripping during transient load surges. Use Value: 25mA sink current directly interfaces with PLC input modules; reverse polarity protection avoids fuse replacement during wiring errors. | Use Scenario: Measuring rotational speed of impeller shafts in chemical dosing pumps and HVAC chillers. IC Role / Device Role / Timing Role: Generates pulse train proportional to shaft speed for feedback to PID controllers or SCADA systems. Use Value: SIP-3 package withstands mechanical vibration and thermal cycling; 550mW dissipation supports continuous operation at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AH3724 | Higher sensitivity (Bop: 5–35 Gauss), lower VCC min (2.5V), SC59/SIP-3 options, AEC-Q100 Grade 0 qualified | Designed for new automotive designs requiring PPAP and extended temperature validation | Select AH3724 for new designs targeting AEC-Q100 compliance and wider magnetic threshold tolerance |
| US1881 | Unipolar operation, 3.3–24V supply, 50mA sink, TO-92 package, no reverse polarity protection | Lacks latching behavior and reverse-voltage hardening - suited for simple proximity detection only | Use US1881 only where unipolar response suffices and external reverse-protection is acceptable |
Compared with AH3724 and US1881, AH175-PG-A-B offers proven thermal robustness and integrated reverse-protection in SIP-3, but lacks AEC-Q100 qualification and has narrower magnetic sensitivity range - best retained for legacy industrial motor upgrades where cost and footprint match existing layouts.
Availability
AH175-PG-A-B is available at Aetrix Electronics and suitable for brushless DC motor commutation, rotor position sensing, current switch monitoring, and RPM detection requiring stable component supply in high-temperature industrial environments.
Supply support for AH175-PG-A-B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The AH175 belongs to Diodes' Hall-effect sensor product line, engineered specifically for ruggedized position and speed sensing in automotive and industrial motor control systems where extended temperature operation and reliability are critical.
FAQ
What is the magnetic polarity requirement for AH175-PG-A-B operation?
The AH175-PG-A-B is a bipolar latch: it switches ON when a South pole approaches the branded side (Bop = 15–60 Gauss), and remains latched until a North pole reduces flux below Brp (-60 to -15 Gauss). It does not respond to single-polarity fields and requires magnetic reversal for reset.
Can AH175-PG-A-B be used with a 3.3V microcontroller I/O pin?
Yes - its open-collector output allows use with 3.3V logic: connect an external 3.3V pull-up resistor to OUT, and configure the MCU pin as input with internal pull-up disabled. The 25mA sink capability ensures clean low-state signaling even with 10kΩ pull-ups.
Why is AH175 marked "NRND" and what does that mean for existing designs?
"NRND" (Not Recommended for New Designs) indicates Diodes has superseded AH175 with AH3724 for future projects due to improved specs and AEC-Q100 qualification. However, AH175-PG-A-B remains fully supported for production continuity, with no announced obsolescence date or last-time-buy constraints.
How does the SIP-3 package thermal performance compare between Ammo and Bulk variants?
Both SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) share identical thermal resistance and 550mW rated dissipation at 25°C. The only difference is lead form: Ammo uses spread leads for automated insertion, Bulk uses straight leads for manual or wave soldering - thermal derating curves are identical per datasheet Figure 4.
AH175-PG-A-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP, Formed Leads
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 8mT Trip, -8mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 3.5V ~ 20V
- Current - Supply (Max):
- 6mA
- Current - Output (Max):
- 25mA
- Output Type:
- Open Collector
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH175-PG-A-B FAQ
1.How can I place an order for AH175-PG-A-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AH175-PG-A-B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AH175-PG-A-B reliable?
The price and inventory of AH175-PG-A-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH175-PG-A-B is usually 5 days.
3.What payment methods are accepted for AH175-PG-A-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH175-PG-A-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH175-PG-A-B?
AH175-PG-A-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH175-PG-A-B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AH175-PG-A-B?
For technical support, including AH175-PG-A-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH175-PG-A-B requirements.
6.How does Aetrix verify that AH175-PG-A-B is sourced from the original manufacturer or authorized distributors?
All AH175-PG-A-B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AH175-PG-A-B meets industry standards.
7.What is the process for return or replacement of AH175-PG-A-B?
All AH175-PG-A-B units undergo pre-shipment inspection (PSI). If there is an issue with AH175-PG-A-B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AH175-PG-A-B part is unused and in its original packaging.
Return procedure for AH175-PG-A-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AH175-PG-A-B Tags
-
TCS40DLR,LF
Toshiba Semiconductor and Storage
-
DRV5032FBDBZR
Texas Instruments
-
DRV5032FADBZR
Texas Instruments
-
AH1912-FA-7
Diodes Incorporated
-
AH1913-W-7
Diodes Incorporated
-
AH1911-W-7
Diodes Incorporated
-
TLI49631MXTSA1
Infineon Technologies
-
SM453R
Honeywell Sensing and Productivity Solutions
-
MLX90248ESE-EBA-000-RE
Melexis Technologies NV
-
MLX92213ELD-AAA-000-RE
Melexis Technologies NV
-
TLE4913HTSA1
Infineon Technologies
-
US5781ESE-AAA-000-RE
Melexis Technologies NV
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
