AH3391Q-P-B Equivalent & Substitute Parts

Part Overview

The AH3391Q-P-B is a unipolar Hall effect magnetic switch manufactured by Diodes Incorporated, designed for digital switching applications requiring magnetic field detection. This component operates as an open drain switch with a sensing range of 27.5mT trip and 25mT release thresholds. The part is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is necessary to ensure continued availability for new designs and ongoing production support.

Substiute Parts

AH3391Q-P-B

Diodes IncorporatedIn Stock: 1452AH3391Q-P-B Datasheet

Current PartRFQ

AH3321Q-P-B

Diodes IncorporatedIn Stock: 1020AH3321Q-P-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AH3391Q-P-B is determined by the following critical parameters:

Mandatory Matching Criteria:

• Function: Unipolar Switch
• Technology: Hall Effect
• Polarization: South Pole
• Output Type: Open Drain
• Voltage Supply Range: 3V ~ 28V (minimum overlap required)
• Current Output (Max): 60mA
• Mounting Type: Through Hole
• Package / Case: 3-SIP
• Operating Temperature Range: -40°C ~ 150°C (TA)

Allowable Variation:

• Sensing Range: Trip and release thresholds may vary within application tolerance
• Current Supply (Max): May differ if within operational specifications
• Features: Additional features such as temperature compensation are acceptable enhancements

The AH3321Q-P-B qualifies as a direct substitute based on matching all mandatory criteria while offering enhanced temperature compensation as an additional feature.

Parameter Comparison

Engineering Selection Recommendations

The AH3321Q-P-B is the manufacturer-recommended substitute for the AH3391Q-P-B. Both components maintain identical electrical specifications for supply voltage, output current, and operating temperature range. The AH3321Q-P-B offers the advantage of Active product status, ensuring long-term availability and supply chain continuity compared to the Last Time Buy status of the AH3391Q-P-B.

The sensing range variation (AH3391Q-P-B: 27.5mT trip / 25mT release versus AH3321Q-P-B: 30mT trip / 21mT release) must be evaluated against application-specific magnetic field detection requirements. Both components maintain South Pole polarization and open drain output configuration, preserving circuit compatibility.

Both parts maintain AEC-Q100 automotive qualification and ROHS3 compliance, supporting applications requiring automotive-grade reliability standards.

Frequently Asked Questions (FAQ)

Q: Can the AH3321Q-P-B directly replace the AH3391Q-P-B in existing designs?

A: Yes, the AH3321Q-P-B is the manufacturer-recommended substitute. Both components share identical package (3-SIP), mounting type (Through Hole), electrical specifications (3V ~ 28V supply, 60mA output), and operating temperature range (-40°C ~ 150°C). The sensing range differs slightly; verify that the AH3321Q-P-B thresholds (30mT trip, 21mT release) are compatible with your magnetic field detection requirements.

Q: What is the primary difference between these two parts?

A: The AH3321Q-P-B includes temperature compensation as an additional feature and maintains Active product status, whereas the AH3391Q-P-B is Last Time Buy. Electrical performance and package specifications are equivalent.

Q: Are both parts suitable for automotive applications?

A: Yes, both the AH3391Q-P-B and AH3321Q-P-B carry AEC-Q100 automotive qualification and are ROHS3 compliant, meeting automotive-grade reliability requirements.

Q: Does the sensing range difference affect circuit design?

A: The sensing range variation must be evaluated against your application's magnetic field strength and switching hysteresis requirements. The AH3391Q-P-B operates at 27.5mT trip with 25mT release, while the AH3321Q-P-B operates at 30mT trip with 21mT release. Confirm that the substitute's thresholds align with your magnetic field detection specifications.

Q: Are there any package or pinout differences?

A: No. Both components use identical 3-SIP through-hole packaging, ensuring direct mechanical and electrical compatibility without PCB redesign.