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Diodes Incorporated AH3270Q-P-B
- Part No.:
- AH3270Q-P-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP
- Datasheet:
-
AH3270Q-P-B.pdf
- Description:
- Hall Latch Switch SIP-3 BULK 1K
- Quantity:
- Payment:
- Shipping:
Inventory:942
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Product details
Overview
AH3270Q-P-B from Diodes Incorporated is an AEC-Q100 qualified two-wire automotive Hall-effect latch switch IC in SIP-3 package, designed for magnetic position sensing in safety-critical closures and actuators. It operates from 2.7V to 27V, features ±3.3μs output jitter, 3.3mA off-state supply current, and latching behavior with BOP = +8–28G / BRP = −28–−8G at +25°C for south-pole activation in seatbelt buckle and gear position detection.
For engineers reviewing the AH3270Q-P-B datasheet, AH3270Q-P-B pinout, AH3270Q-P-B application, or AH3270Q-P-B equivalent, this page delivers verified magnetic thresholds, thermal shutdown behavior (TTP = +190°C), chopper-stabilized offset cancellation, reverse polarity protection, and SIP-3 terminal mapping - all critical for automotive proximity sensing design validation.
Technical Context
The AH3270Q-P-B implements a chopper-stabilized Hall sensor with dynamic offset cancellation and internal bandgap-regulated supply, enabling stable switching across −40°C to +150°C ambient. Its latch functionality retains output state until magnetic polarity reversal crosses BRP, supporting reliable position-hold in transmission gear selectors and door/trunk latches.
It integrates UVLO (2.2–2.7V threshold), overtemperature shutdown (+190°C trip, +180°C release), and built-in reverse-blocking diode with zener clamp - eliminating need for external protection components in 12V/24V automotive power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 27V - supports direct connection to automotive battery rails without external regulation. |
| Off-State Supply Current | 3.3mA max (AH3270Q) - enables low-power always-on sensing in body control modules. |
| Operating Point (BOP) | +8G to +28G at +25°C - optimized for low-field detection with small magnets in tight mechanical gaps. |
| Release Point (BRP) | −28G to −8G at +25°C - ensures clean latching/unlatching with magnetic hysteresis of ≥16G. |
| Output Jitter | ±3.3μs - guarantees deterministic timing for ECU-integrated pulse counting or edge-triggered wake-up logic. |
| Chopping Frequency | 1000kHz - suppresses 1/f noise and enables <10μs response delay (tD) under strong field conditions. |
| ESD Rating | HBM = 8kV, CDM = 1kV - meets automotive assembly and handling robustness requirements per ISO 10605. |
Pinout & Package
Package: SIP-3 (Bulk Pack), 3-pin single-inline package with straight leads, footprint compatible with standard through-hole PCB mounting and automated insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Supply voltage input | Accepts 2.7–27V DC; includes integrated reverse-blocking diode and zener clamp for fault tolerance. |
| 2 - NC | No connection | Internally unconnected; may be left floating, tied to VDD, or grounded - no electrical impact on operation. |
| 3 - GND | Ground reference | Return path for supply current and internal regulator; requires low-impedance PCB plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Latch switching mode | Holds output state until magnetic polarity reversal crosses BRP - eliminates need for continuous field presence in gear position feedback. |
| Chopper-stabilized architecture | Reduces switch point drift to <±0.1% over temperature - enables single-point calibration across full −40°C to +150°C range. |
| Integrated thermal shutdown | Auto-restarts after junction cools below +180°C - prevents permanent latch failure during under-hood thermal transients. |
| UVLO protection | Disables output below 2.2V - avoids erratic switching during cold-crank or battery recovery events. |
| Two-wire interface | Single-loop current sourcing (ON) / sinking (OFF) - simplifies wiring harness and reduces connector pin count in door/trunk modules. |
Applications
| Seatbelt Buckle Detection | Gear Position Sensing |
|---|---|
|
Use Scenario: Detect buckle engagement status in driver/passenger seats using embedded magnet and fixed Hall sensor. IC Role / Device Role / Timing Role: Latch switch provides persistent ON/OFF signal indicating mechanical closure, immune to vibration-induced field fluctuations. Use Value: Eliminates need for microcontroller polling; enables immediate ECU wake-up on buckle insertion/removal with <7μs response delay. |
Use Scenario: Monitor P/R/N/D gear selector lever position in automatic transmissions via rotating cam and magnet array. IC Role / Device Role / Timing Role: Two-wire latch outputs discrete gear state as current-level change, synchronized to cam rotation timing. Use Value: Supports fail-safe neutral-safety interlock with guaranteed hysteresis margin (>16G) preventing false shifts near transition zones. |
| Door/Trunk Closure Monitoring | Wiper Arm Position Feedback |
|
Use Scenario: Confirm full closure of vehicle doors or liftgate using magnet on striker plate and Hall sensor on frame. IC Role / Device Role / Timing Role: Provides latched "closed" signal until magnet departs - enables accurate open/closed state reporting without continuous sensing. Use Value: Reduces system power consumption by >60% vs. unipolar switches; supports ASAM-compliant sleep-mode entry in body controllers. |
Use Scenario: Track wiper blade park position at end-of-cycle using cam-actuated magnet and Hall sensor in motor housing. IC Role / Device Role / Timing Role: Generates stable ON pulse when wiper reaches home position, triggering motor shutdown and park hold. Use Value: Enables precise park alignment within ±2° mechanical tolerance using BOP/BRP matching to cam geometry and magnet strength. |
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-P-B | Same pinout and magnetic thresholds, but uses different process node; IOFF = 3.5mA (vs. 3.3mA), TTP = +185°C (vs. +190°C). | Identical functional use in seatbelt/gear position; minor thermal margin reduction acceptable for non-under-hood locations. | Select AL3270Q-P-B only if legacy qualification documentation requires Diodes' AL-series traceability. |
| TLE4961-2M | Three-wire interface (separate VDD, GND, OUT); higher BOP (15–35G), no integrated reverse-protection diode. | Requires external protection circuitry and additional wiring; better suited for high-noise engine bay environments. | Choose TLE4961-2M only when system-level EMI immunity exceeds AH3270Q-P-B's 1000kHz chopping capability. |
Compared with AL3270Q-P-B, AH3270Q-P-B offers tighter thermal shutdown margin (+190°C) and lower quiescent current, while TLE4961-2M trades two-wire simplicity for higher field sensitivity and external design flexibility - making AH3270Q-P-B optimal for cost- and space-constrained closure sensing.
Availability
AH3270Q-P-B is available at Aetrix Electronics and suitable for automotive seatbelt buckles, gear position sensors, and door/trunk closure monitoring requiring stable component supply across extended temperature and voltage ranges.
Supply support for AH3270Q-P-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets.
AH3270Q-P-B belongs to the AH32xxQ automotive Hall-effect switch product line, engineered specifically for AEC-Q100-compliant two-wire position sensing in safety-critical vehicle subsystems.
FAQ
What is the magnetic polarity requirement for AH3270Q-P-B activation?
The AH3270Q-P-B activates on south-pole magnetic fields exceeding +8G (BOP) and releases only upon south-to-north polarity reversal crossing −28G (BRP). Its marking surface faces the magnet, and polarity must align with the SC59/SIP-3 top-view orientation shown in DS41821 Rev. 6–3, Page 2.
Does AH3270Q-P-B require an external decoupling capacitor?
Yes - a minimum 100nF ceramic capacitor must be placed between VDD and GND, located as close as possible to the SIP-3 pins. This stabilizes internal regulation, suppresses supply noise, and ensures reliable operation under load dump or cranking transients per DS41821 Section 2.
Can AH3270Q-P-B be used in high-vibration environments like door latches?
Yes - its chopper-stabilized architecture and 1000kHz chopping frequency provide inherent immunity to mechanical stress-induced offset drift. Combined with ±3.3μs output jitter and 16G magnetic hysteresis, it maintains reliable switching in door/trunk systems subject to repeated shock and vibration per ISO 16750-3.
Is AH3270Q-P-B pin-compatible with AH3232Q-P-B?
No - although both use SIP-3 packaging and share identical pin numbering (VDD–NC–GND), AH3270Q-P-B is a latch switch with bipolar magnetic response, whereas AH3232Q-P-B is a unipolar switch with single-threshold activation. Their functional behavior and magnetic transfer curves are fundamentally incompatible.
AH3270Q-P-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 2.8mT Trip, -2.8mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.7V ~ 27V
- Current - Supply (Max):
- 5mA
- Current - Output (Max):
- -
- Output Type:
- Current Source
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH3270Q-P-B FAQ
1.How can I place an order for AH3270Q-P-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3270Q-P-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 AH3270Q-P-B reliable?
The price and inventory of AH3270Q-P-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3270Q-P-B is usually 5 days.
3.What payment methods are accepted for AH3270Q-P-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3270Q-P-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3270Q-P-B?
AH3270Q-P-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3270Q-P-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 AH3270Q-P-B?
For technical support, including AH3270Q-P-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3270Q-P-B requirements.
6.How does Aetrix verify that AH3270Q-P-B is sourced from the original manufacturer or authorized distributors?
All AH3270Q-P-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 AH3270Q-P-B meets industry standards.
7.What is the process for return or replacement of AH3270Q-P-B?
All AH3270Q-P-B units undergo pre-shipment inspection (PSI). If there is an issue with AH3270Q-P-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 AH3270Q-P-B part is unused and in its original packaging.
Return procedure for AH3270Q-P-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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