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Diodes Incorporated AH3270Q-W-7
- Part No.:
- AH3270Q-W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3270Q-W-7.pdf
- Description:
- MAG SWITCH LATCH SC59 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,175
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Product details
Overview
AH3270Q-W-7 from Diodes Incorporated is an AEC-Q100 qualified, two-wire automotive Hall-effect latch switch IC in SC59 (Type A1) package, designed for magnetic position sensing in harsh environments. It operates from 2.7V to 27V, features BOP = 8–28 G and BRP = –28 to –8 G at +25°C, includes chopper stabilization, thermal shutdown at +190°C, and delivers 3.3 mA off-state current. Used in gear position detection and door/trunk closure systems.
For engineers reviewing the AH3270Q-W-7 datasheet, AH3270Q-W-7 pinout, AH3270Q-W-7 application, or AH3270Q-W-7 equivalent, key selection criteria include latch-mode magnetic hysteresis, wide supply range compatibility, automotive-grade thermal robustness (–40°C to +150°C), and two-wire current-loop interface suitability for low-pin-count vehicle subsystems.
Technical Context
The AH3270Q-W-7 implements a chopper-stabilized Hall sensor with dynamic offset cancellation and internal bandgap-regulated supply, enabling stable switching thresholds across temperature. Its latch behavior requires magnetic polarity reversal-south pole activation followed by north pole release-to toggle output state.
It integrates reverse-voltage protection via built-in blocking diode and zener clamp, UVLO at 2.2 V, and auto-restart thermal shutdown triggered at +190°C junction temperature. Output current transitions occur within 7 μs response delay and 0.1–1 μs rise/fall time under 50 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 27 V - supports direct battery connection across automotive cold-crank to load-dump conditions. |
| Operating Temperature | –40°C to +150°C - qualified for under-hood and cabin-mounted position sensing. |
| BOP / BRP (25°C) | 8–28 G / –28 to –8 G - defines magnetic latch window; enables reliable detection of gear selector movement direction. |
| IOFF (Latch Mode) | 3.3 mA max - sets minimum load current for two-wire loop compliance in 4–20 mA-compatible systems. |
| Thermal Shutdown | +190°C trip, +180°C release - protects against sustained overtemperature without external circuitry. |
| ESD Rating | HBM 8 kV, CDM 1 kV - meets automotive ESD immunity requirements for assembly and field operation. |
| Response Delay | 7 μs max - ensures real-time feedback for fast-actuating mechanical systems like transmission actuators. |
Pinout & Package
SC59 (Type A1) surface-mount package with 3-pin single-inline configuration; thermally optimized for PCB mounting with RθJA = 268°C/W on 50 mm × 50 mm 2 oz copper board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Supply voltage input | Accepts 2.7–27 V; includes integrated reverse-blocking diode and zener clamp for fault tolerance. |
| 2 - NC | No connection | Internally unconnected; may be tied to VDD, GND, or left floating per layout requirements. |
| 3 - GND | Ground reference | Return path for supply current and internal regulator; must be low-impedance for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Latch-mode magnetic sensing | Retains output state until magnetic polarity reversal occurs - eliminates need for continuous field presence in gear position detection. |
| Chopper-stabilized architecture | Reduces switch-point drift to <±0.5 G over temperature - ensures consistent actuation across –40°C to +150°C ambient. |
| Two-wire current-loop interface | 3.3 mA off-state current enables direct integration into existing 4–20 mA vehicle wiring harnesses without added components. |
| Integrated protection suite | Combines UVLO, reverse-voltage clamping, transient spike suppression, and auto-restart thermal shutdown - reduces external protection component count by ≥3. |
Applications
| Transmission Gear Position Sensing | Door/Trunk Closure Detection |
|---|---|
|
Use Scenario: Detecting discrete gear positions (P/R/N/D) in automatic transmissions using rotating cam with embedded magnets. IC Role / Device Role / Timing Role: Latch switch provides persistent high/low output per gear detent, eliminating need for microcontroller polling or external latching logic. Use Value: Enables fail-safe neutral-safety interlock and gear display synchronization with <7 μs response latency and no false triggers during vibration. |
Use Scenario: Confirming full closure of vehicle doors or trunk lid via magnetic striker plate alignment. IC Role / Device Role / Timing Role: Two-wire latch switch acts as self-contained proximity indicator with polarity-reversal hysteresis to reject bounce and misalignment. Use Value: Reduces wiring complexity versus three-wire switches while maintaining AEC-Q100 reliability for 10+ year service life. |
| Seatbelt Buckle Status Monitoring | Wiper Arm Position Feedback |
|
Use Scenario: Verifying seatbelt tongue insertion into buckle housing using magnet-actuated reed replacement. IC Role / Device Role / Timing Role: Direct-output latch switch signals "buckled" state until belt removal triggers magnetic reversal - immune to transient shocks. Use Value: Meets FMVSS 208 occupant restraint system requirements with zero power consumption in off-state and 3.3 mA quiescent draw. |
Use Scenario: Tracking wiper blade park position and multi-speed actuation via cam-driven magnet array. IC Role / Device Role / Timing Role: Provides deterministic on/off transition at precise angular positions using south-pole activation and north-pole release. Use Value: Eliminates potentiometer wear-out and contact corrosion issues in high-humidity exterior environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3270Q-W-7 | Same pinout and latch function but uses different die revision; BOP/BRP spread tighter (10–25 G / –25 to –10 G) and IOFF = 3.0 mA. | Slightly higher sensitivity margin for weak-field environments; identical thermal and ESD specs. | Prefer when magnetic air gap exceeds 3 mm or target field strength is below 15 G. |
| TLE4961-2M | Three-wire interface, 5 V only supply, ±1 kG field range, integrated diagnostics - not pin-compatible. | Requires separate VDD/GND lines and microcontroller communication; suited for ASIL-B diagnostic architectures. | Select only if functional safety reporting (e.g., open-load detection) is mandatory and wiring harness allows third wire. |
Compared with AL3270Q-W-7, AH3270Q-W-7 offers broader magnetic threshold tolerance for cost-sensitive mechanical tolerances; versus TLE4961-2M, it trades diagnostics for minimal wiring and lower system BOM cost in non-ASIL applications.
Availability
AH3270Q-W-7 is available at Aetrix Electronics and suitable for automotive position sensing, seatbelt status monitoring, and door/trunk closure detection requiring stable component supply across extended temperature and voltage ranges.
Supply support for AH3270Q-W-7 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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing certified to IATF 16949 and AEC-Q100 qualification capabilities.
AH3270Q-W-7 belongs to the AH32xxQ automotive Hall-effect switch family, engineered specifically for robust, two-wire magnetic sensing in space-constrained, high-reliability vehicle subsystems.
FAQ
What is the magnetic polarity requirement for AH3270Q-W-7 actuation?
The AH3270Q-W-7 activates on south-pole magnetic field exceeding BOP (8–28 G), then holds output until a north-pole field drops below BRP (–28 to –8 G). This polarity reversal is mandatory for state change - unlike unipolar switches, it does not deactivate with field removal alone.
Can AH3270Q-W-7 operate directly from a 12 V automotive battery?
Yes - its 2.7 V to 27 V supply range covers nominal 12 V, cold-crank (as low as 6 V), and load-dump transients (up to 27 V). Internal reverse-blocking diode and zener clamp protect against battery reversal and spikes without external components.
Is a decoupling capacitor required for stable operation?
Yes - a 100 nF or larger ceramic capacitor between VDD and GND is mandatory per datasheet Note 4. It must be placed as close as possible to the IC pins to suppress supply noise and ensure reliable chopper stabilization and magnetic sampling accuracy.
Does AH3270Q-W-7 support high-frequency magnetic switching?
It supports up to 50 kHz maximum magnetic switching frequency under strong-field conditions (B > 3×BOP), with 7 μs typical response delay and sub-microsecond current rise/fall times - sufficient for wiper motor commutation feedback and fast-acting transmission actuators.
AH3270Q-W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 1.8mT Trip, -1.8mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.7V ~ 27V
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Output Type:
- Latch
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AH3270Q-W-7 FAQ
1.How can I place an order for AH3270Q-W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3270Q-W-7 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 AH3270Q-W-7 reliable?
The price and inventory of AH3270Q-W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3270Q-W-7 is usually 5 days.
3.What payment methods are accepted for AH3270Q-W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3270Q-W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3270Q-W-7?
AH3270Q-W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3270Q-W-7 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 AH3270Q-W-7?
For technical support, including AH3270Q-W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3270Q-W-7 requirements.
6.How does Aetrix verify that AH3270Q-W-7 is sourced from the original manufacturer or authorized distributors?
All AH3270Q-W-7 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 AH3270Q-W-7 meets industry standards.
7.What is the process for return or replacement of AH3270Q-W-7?
All AH3270Q-W-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3270Q-W-7, 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 AH3270Q-W-7 part is unused and in its original packaging.
Return procedure for AH3270Q-W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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