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Taiwan Semiconductor Corporation SA110AH
- Part No.:
- SA110AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA110AH.pdf
- Description:
- TVS DIODE 110VWM 177VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,708
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Product details
Overview
SA110AH from Taiwan Semiconductor is a unidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, designed for automotive-grade overvoltage protection. It features 110 V working stand-off voltage (VWM), 122–149 V breakdown voltage (VBR @ 1 mA), 196 V maximum clamping voltage (VC) at 2.6 A peak pulse current, and 500 W surge capability per 10/1000 µs waveform - deployed in engine control units to safeguard CAN transceivers against load dump and ISO 7637-2 pulses.
For engineers reviewing the SA110AH datasheet, SA110AH pinout, SA110AH application, or SA110AH equivalent, this page delivers verified electrical parameters, automotive qualification status, clamping performance under standardized surge waveforms, thermal derating behavior, and direct alternatives with documented VWM/VBR/VC alignment - all validated against Taiwan Semiconductor's L2105 specification release.
Technical Context
The SA110AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range (122–149 V at 1 mA). Its low dynamic impedance enables rapid clamping response (<1.0 ps from 0 V to VBR), limiting transient energy delivered to downstream circuitry during fast-rising EFT or load-dump events.
Rated for TJ = –55 °C to +175 °C operation and qualified to AEC-Q101, it sustains 500 W non-repetitive peak pulse power (10/1000 µs), with clamping voltage tightly bounded at 196 V (max) at IPPM = 2.6 A - ensuring predictable protection margin above 110 V system rail while maintaining <1 µA leakage at rated VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - maximum continuous reverse operating voltage before conduction begins; sets system rail compatibility for 12 V/24 V automotive electronics. |
| VBR min/max | 122 V / 149 V @ 1 mA - defines guaranteed avalanche initiation window; ensures consistent turn-on across temperature and unit-to-unit variation. |
| VC @ IPPM | 196 V @ 2.6 A - peak clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by protected ICs. |
| PPK | 500 W - peak pulse power rating per standard IEC 61000-4-5 waveform; validates robustness against ISO 7637-2 Pulse 5a/b load dump. |
| IR @ VWM | <1 µA - reverse leakage at 110 V; minimizes standby power loss and avoids false triggering in high-impedance sensing nodes. |
| TJ max | +175 °C - maximum junction temperature; supports under-hood placement near ECUs and powertrain modules without thermal derating penalties. |
| Package | DO-204AC (DO-15) - industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads compliant with J-STD-002. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, cylindrical epoxy-molded body with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / reference node for unidirectional clamping | Connected to system ground or low-side return; establishes reference for reverse-biased protection operation. |
| Cathode | Protected line input / high-side connection | Connected to the line being protected (e.g., CAN_H, LIN, sensor supply); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing - required for ECU, ADAS, and body control module deployment. |
| Clamping voltage ≤196 V at 2.6 A | Ensures protected ICs (e.g., CAN transceivers rated to 70 V abs max) remain within safe absolute maximum ratings during 10/1000 µs surges. |
| Response time <1.0 ps (0 V → VBR) | Enables suppression of sub-nanosecond ESD transients before propagation into sensitive analog front-ends or microcontroller I/O pins. |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life recycling requirements. |
| 175 °C max junction temperature | Permits direct mounting on high-temperature PCB zones (e.g., near power MOSFETs or ignition drivers) without external heatsinking. |
Applications
| Automotive Engine Control Unit (ECU) | CAN Bus Physical Layer Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and power rails in under-hood ECUs exposed to ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V battery rail and local DC/DC input, clamping transients before they reach LDOs or MCU VDD pins. Use Value: Limits peak voltage to ≤196 V during 500 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic domains powered from the same rail. |
Use Scenario: Safeguarding high-speed CAN transceivers (e.g., TJA1042, SN65HVD230) against ESD (IEC 61000-4-2) and EFT (IEC 61000-4-4) on differential bus lines. IC Role / Device Role / Timing Role: Bidirectional-capable SA110AH variant not applicable; SA110AH used on single-ended supply lines (VCC or GND side) feeding transceiver bias networks. Use Value: Sub-µA leakage at 110 V prevents signal integrity degradation on 12 V CAN bias rails while enabling fast clamping to preserve bit timing during fast transients. |
| LED Headlamp Driver Protection | Industrial PLC Digital Input Module |
Use Scenario: Shielding constant-current LED driver ICs (e.g., AL8860, LM3409) from inductive kickback generated by high-side MOSFET switching in 48 V headlamp systems. IC Role / Device Role / Timing Role: Placed across driver IC's VIN-to-GND terminals to clamp flyback spikes induced by 100+ A load currents. Use Value: Withstands 70 A IFSM (8.3 ms half-sine) and clamps ≤196 V, preventing overvoltage failure of internal high-voltage FETs rated to 60–80 V. |
Use Scenario: Protecting optocoupler inputs and microcontroller digital inputs in 24 V industrial PLC modules subjected to field-wiring transients and relay contact bounce. IC Role / Device Role / Timing Role: Mounted on 24 V supply input stage upstream of linear regulators and level-shifters feeding isolated input buffers. Use Value: 110 V VWM allows full compatibility with 24 V nominal systems with ±10 % tolerance and 30 % overvoltage margins, while 196 V VC ensures downstream ICs see no more than 2× nominal rail voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ110A | Same VWM (110 V), slightly higher VC (209 V @ 2.4 A), identical DO-214AC package but surface-mount - requires PCB redesign. | Designed for SMT assembly; lacks AEC-Q101 qualification; suitable for industrial but not automotive-critical nodes. | Select SMAJ110A only if board space constraints mandate SMT and AEC-Q101 is not required. |
| ON Semiconductor 1.5KE110A | Higher PPK (1500 W), larger DO-201AD package, VWM = 94 V (not 110 V), VC = 182 V @ 6.5 A - different voltage grading and surge capacity. | Intended for higher-energy surges (e.g., AC mains interfaces); lower VWM risks premature conduction in 12 V/24 V automotive rails. | Choose 1.5KE110A only for legacy designs requiring higher surge margin and where 94 V VWM aligns with system tolerances. |
Compared with SA110AH, SMAJ110A offers SMT compatibility but omits automotive qualification, while 1.5KE110A delivers greater surge handling at the cost of reduced voltage margin and incompatible VWM - making SA110AH the optimal choice for AEC-Q101-compliant 110 V rail protection with precise clamping control.
Availability
SA110AH is available at Aetrix Electronics and suitable for automotive ECU design, CAN bus interface protection, and LED driver overvoltage mitigation requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 traceability.
Supply support for SA110AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and automotive-qualified components since 1979.
The SA Series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 reliability, tight VBR distribution, and repeatable clamping performance across extreme temperature ranges.
FAQ
What is the AEC-Q101 qualification status of SA110AH?
The SA110AH is explicitly AEC-Q101 qualified per the "H" suffix in its ordering code and confirmed in Taiwan Semiconductor's SA Series documentation (Version L2105). This includes stress testing for temperature cycling, high-temperature operating life, unbiased highly accelerated stress testing, and mechanical shock - validating suitability for automotive powertrain and chassis applications where functional safety is critical. SA110AH meets all test conditions defined in AEC-Q101 Rev D.
Does SA110AH support bidirectional transient suppression?
No, SA110AH is a unidirectional TVS diode, as indicated by its single cathode band marking and specification table entries limited to VBR (uni-directional) and absence of bidirectional VBR data. For bidirectional protection on differential lines like CAN or USB, SA110A (the "A" suffix variant) or dedicated bidirectional parts such as SA110CA must be selected - SA110AH is intended solely for single-polarity rail protection.
What is the maximum clamping voltage of SA110AH under standard surge conditions?
The maximum clamping voltage (VC) of SA110AH is 196 V, measured at a peak pulse current (IPPM) of 2.6 A using the 10/1000 µs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and represents the highest voltage that will appear across the device during a standardized surge event - directly defining the protection threshold for downstream ICs.
How does SA110AH's leakage current compare to other 110 V TVS diodes?
SA110AH exhibits ≤1 µA reverse leakage current at its full rated working stand-off voltage (VWM = 110 V) and TA = 25 °C, matching industry-leading performance for this voltage class. This low IR minimizes parasitic loading on high-impedance sensor bias networks and prevents unintended power drain in always-on automotive modules - outperforming many legacy 1.5KE-series parts which specify up to 5 µA at lower VWM points.
Can SA110AH be used in place of SA110A in a design?
No - SA110AH and SA110A are functionally distinct: SA110AH is AEC-Q101 qualified and unidirectional, while SA110A is the non-automotive, bidirectional variant with different VBR min/max (122–135 V vs. 122–149 V) and clamping behavior. Substituting SA110AH for SA110A would eliminate bidirectional protection capability and may violate system-level EMC requirements; the "H" and "A" suffixes denote mutually exclusive device categories per Taiwan Semiconductor's ordering matrix.
SA110AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- SA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA110AH FAQ
1.How can I place an order for SA110AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA110AH 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 SA110AH reliable?
The price and inventory of SA110AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA110AH is usually 5 days.
3.What payment methods are accepted for SA110AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA110AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA110AH?
SA110AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA110AH 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 SA110AH?
For technical support, including SA110AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA110AH requirements.
6.How does Aetrix verify that SA110AH is sourced from the original manufacturer or authorized distributors?
All SA110AH 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 SA110AH meets industry standards.
7.What is the process for return or replacement of SA110AH?
All SA110AH units undergo pre-shipment inspection (PSI). If there is an issue with SA110AH, 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 SA110AH part is unused and in its original packaging.
Return procedure for SA110AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA110AH Tags
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