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Alpha & Omega Semiconductor Inc. AOZ8S501BDS-05
- Part No.:
- AOZ8S501BDS-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8S501BDS-05.pdf
- Description:
- 1CH 5V BIDIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
AOZ8S501BDS-05 from Alpha and Omega Semiconductor is a 1-channel bidirectional high-surge TVS diode designed for ESD and surge protection of low-voltage data lines. It delivers ±30 kV IEC 61000-4-2 ESD immunity, 20 A IEC 61000-4-5 (8/20 µs) surge rating, 35 pF junction capacitance, 5 V reverse working voltage, and clamps to ≤9.5 V at 30 A TLP, enabling robust protection in mobile audio interfaces.
For engineers reviewing the AOZ8S501BDS-05 datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping behavior, low capacitance for signal integrity, IEC-compliant surge/ESD ratings, thermal operation up to +125°C, and DFN1.0×0.6-2L footprint compatibility with space-constrained portable designs.
Technical Context
The AOZ8S501BDS-05 integrates two unidirectional TVS diodes in antiparallel configuration within a single DFN package, enabling symmetrical clamping for both positive and negative transients. Its snapback hold voltage of 5.5 V ensures stable conduction after breakdown, while low 35 pF capacitance minimizes signal distortion on high-speed audio lines.
It meets IEC 61000-4-2 (±30 kV contact/air), IEC 61000-4-5 (20 A, 8/20 µs), and IEC 61000-4-4 (40 A EFT) standards, with guaranteed clamping performance across 1–30 A TLP pulses and 2–20 A surge currents - all specified at TJ = −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 5 V - defines maximum continuous DC voltage applied without leakage or conduction |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact & air - withstands worst-case human-body ESD events per industrial standard |
| Surge Rating (IEC 61000-4-5) | ±20 A (8/20 µs) - protects against lightning-induced surges on power/data rails |
| Junction Capacitance | 35 pF at 0 V, 1 MHz - preserves signal integrity on audio and USB-like interfaces |
| Clamping Voltage | ≤9.5 V at 30 A TLP - limits transient overvoltage to safe levels for downstream ICs |
| Operating Temperature | −40°C to +125°C - supports automotive cabin and industrial ambient conditions |
Pinout & Package
AOZ8S501BDS-05 is housed in a RoHS-compliant, halogen-free DFN1.0×0.6-2L package (1.0 mm × 0.6 mm × 0.5 mm), optimized for ultra-compact PCB layouts in mobile devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Cathode-Grounded Diode / Cathode of Anode-Grounded Diode | Bidirectional terminal: conducts transients toward VCC or GND depending on polarity |
| Pin 2 | Cathode of Cathode-Grounded Diode / Anode of Anode-Grounded Diode | Complementary bidirectional terminal; forms symmetrical clamping path with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC-coupled or floating data lines without polarity constraints |
| Low 35 pF junction capacitance | Maintains bandwidth and rise-time integrity on stereo audio, headset, and I²S interfaces |
| 5.5 V snapback hold voltage | Ensures stable low-impedance conduction during sustained surges, reducing thermal stress |
| ±30 kV IEC 61000-4-2 ESD rating | Exceeds Level 4 immunity requirements for handheld consumer electronics |
| Green packaging | DFN1.0×0.6-2L meets RoHS and halogen-free mandates for global market compliance |
Applications
| Smartphone Audio Jack Protection | Notebook Audio Line Protection |
|---|---|
Use Scenario: Protecting 3.5 mm TRRS headset interface from user-handling ESD and cable-bend-induced transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at jack connector to shunt transients before reaching codec IC. Use Value: 35 pF capacitance avoids audio band attenuation; ±30 kV ESD rating prevents latch-up or damage during daily use. | Use Scenario: Safeguarding internal microphone and speaker amplifier lines in thin-profile laptops exposed to docking/unplugging events. IC Role / Device Role / Timing Role: Low-capacitance TVS deployed on differential audio traces between audio controller and analog front-end. Use Value: 5 V VRWM aligns with 3.3 V/5 V audio rail voltages; 20 A surge rating handles inductive kickback from nearby power switching. |
| USB-C Audio Adapter Protection | Industrial Human-Machine Interface (HMI) Audio |
Use Scenario: Shielding analog audio pins in USB-C to 3.5 mm adapters subjected to repeated plug insertion and environmental ESD. IC Role / Device Role / Timing Role: Standalone bidirectional TVS on each audio channel (L/R/GND), mounted adjacent to connector. Use Value: DFN1.0×0.6-2L footprint enables placement within tight USB-C shell clearance; 125°C rating supports adapter internal temperature rise. | Use Scenario: Protecting front-panel audio controls (e.g., volume knob feedback, intercom mic) in factory-floor HMIs exposed to charged personnel and equipment discharge. IC Role / Device Role / Timing Role: Primary ESD suppression element on audio input/output paths interfacing with microcontroller GPIO or codec. Use Value: −40°C to +125°C operation ensures reliability in uncontrolled ambient environments; 40 A EFT rating suppresses noise from nearby motor drives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, SMA package (4.5 mm × 2.7 mm), 600 W peak power, 600 pF capacitance | Requires external series resistor for bidirectional behavior; unsuitable for high-frequency audio | Select only if board space and capacitance constraints are relaxed and unidirectional protection suffices |
| TPD2E001DRYR | 2-channel, 15 pF, ±8 kV HBM, ±12 kV IEC ESD, but only 4 A surge rating | Limited surge robustness; intended for ESD-only, not combined ESD/surge environments | Prefer when ESD dominates threat model and ultra-low capacitance is critical; avoid for lightning-prone or industrial settings |
Compared with SMAJ5.0A and TPD2E001DRYR, the AOZ8S501BDS-05 uniquely combines true bidirectionality, 35 pF capacitance, and 20 A surge capability in a 1.0 mm × 0.6 mm footprint - making it optimal for compact, high-reliability audio line protection where both ESD and surge coexist.
Availability
AOZ8S501BDS-05 is available at Aetrix Electronics and suitable for smartphone audio jack protection, notebook audio line protection, and USB-C audio adapter designs requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for AOZ8S501BDS-05 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
Alpha and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for efficiency-critical applications.
The AOZ8S501BDS-05 belongs to AOS's high-surge TVS family engineered specifically for low-capacitance, high-reliability protection of portable device interfaces - balancing ESD robustness, surge handling, and signal fidelity.
FAQ
What is the clamping voltage of AOZ8S501BDS-05 under 20 A IEC 61000-4-5 surge conditions?
The AOZ8S501BDS-05 clamps to a maximum of 11.5 V under 20 A, 8/20 µs IEC 61000-4-5 surge conditions. This value is specified in the Electrical Characteristics table on page 3 of the Rev. 2.0 datasheet and ensures downstream components remain within safe operating voltage margins during real-world surge events.
Does AOZ8S501BDS-05 require external biasing or control circuitry?
No, AOZ8S501BDS-05 is a passive, stand-alone TVS diode requiring no external bias, control signals, or power. It operates automatically via avalanche breakdown when transient voltage exceeds its reverse breakdown threshold (5.7–9 V), making AOZ8S501BDS-05 ideal for simple, reliable integration into audio and power rail protection networks.
Can AOZ8S501BDS-05 be used on a 3.3 V data line?
Yes, AOZ8S501BDS-05 is rated for 5 V reverse working voltage (VRWM), providing sufficient margin above 3.3 V nominal rails. Its low leakage (<100 nA at VRWM) and 35 pF capacitance ensure minimal impact on signal integrity, confirming AOZ8S501BDS-05 suitability for 3.3 V audio, I²S, or other low-voltage interface protection.
What is the package dimension and mounting type of AOZ8S501BDS-05?
AOZ8S501BDS-05 uses a DFN1.0×0.6-2L package measuring 1.0 mm × 0.6 mm × 0.5 mm with two bottom-terminated solder pads. It is surface-mount compatible and requires reflow soldering per JEDEC J-STD-020 moisture sensitivity level (MSL) 1 profile - no special handling needed for AOZ8S501BDS-05 assembly.
Is AOZ8S501BDS-05 compliant with automotive AEC-Q200 requirements?
No, AOZ8S501BDS-05 is not AEC-Q200 qualified. While it operates from −40°C to +125°C and meets IEC transient immunity standards, it lacks the stress testing, failure analysis, and qualification documentation required for automotive-grade deployment. For automotive applications, consult AOS's AEC-Q200-certified TVS portfolio instead of AOZ8S501BDS-05.
AOZ8S501BDS-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 5.7V
- Voltage - Clamping (Max) @ Ipp:
- 11.5V
- Current - Peak Pulse (10/1000µs):
- 20A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 35pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8S501BDS-05 FAQ
1.How can I place an order for AOZ8S501BDS-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S501BDS-05 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 AOZ8S501BDS-05 reliable?
The price and inventory of AOZ8S501BDS-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S501BDS-05 is usually 5 days.
3.What payment methods are accepted for AOZ8S501BDS-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S501BDS-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S501BDS-05?
AOZ8S501BDS-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S501BDS-05 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 AOZ8S501BDS-05?
For technical support, including AOZ8S501BDS-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S501BDS-05 requirements.
6.How does Aetrix verify that AOZ8S501BDS-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8S501BDS-05 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 AOZ8S501BDS-05 meets industry standards.
7.What is the process for return or replacement of AOZ8S501BDS-05?
All AOZ8S501BDS-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S501BDS-05, 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 AOZ8S501BDS-05 part is unused and in its original packaging.
Return procedure for AOZ8S501BDS-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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