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Taiwan Semiconductor Corporation SA150H
- Part No.:
- SA150H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA150H.pdf
- Description:
- 500W, 185.5V, UNIDIRECTIONAL, TV
- Quantity:
- Payment:
- Shipping:
Inventory:8,300
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Product details
Overview
SA150H from Taiwan Semiconductor is a unidirectional 150V working stand-off, AEC-Q101 qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 268V clamping voltage at 1.9A peak pulse current and <1μA reverse leakage above 10V - used for automotive ESD and load-dump protection of power rails and CAN/LIN transceivers.
For engineers reviewing the SA150H datasheet, SA150H pinout, SA150H application, or SA150H equivalent, key selection criteria include its AEC-Q101 qualification, 150V VWM compatibility with 12V/24V automotive systems, DO-15 mechanical footprint, unidirectional polarity marking, and verified clamping performance under ISO 7637-2 Pulse 1/2a/5a waveforms.
Technical Context
The SA150H operates as a unidirectional avalanche breakdown TVS diode, triggered when reverse voltage exceeds its 167–204V breakdown range at 1mA test current. It clamps transients to ≤268V at 1.9A (10/1000μs), with <1.0ps response time from 0V to VBR, enabling protection of downstream ICs against fast-rising ESD and switching spikes.
Its thermal design supports continuous operation from –55°C to +175°C junction temperature, with 3W steady-state power dissipation on 10×10mm copper pads and 70A non-repetitive forward surge capability - confirming suitability for under-hood automotive environments subject to high ambient temperature and inductive load switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150V - maximum continuous reverse operating voltage compatible with 24V automotive systems before clamping initiates |
| VBR min/max | 167V / 204V @ 1mA - guaranteed avalanche onset range ensures consistent turn-on across production lots and temperature |
| VC @ IPPM | 268V @ 1.9A (10/1000μs) - peak clamped voltage seen by protected circuit during standardized surge event |
| PPK | 500W - peak pulse power handling per IEC 61000-4-5 and ISO 7637-2 compliant surge testing |
| IR @ VWM | <1μA - negligible leakage current preserves battery drain budget in always-on vehicle modules |
| TJ max | +175°C - enables placement near heat sources (e.g., engine control units, power converters) |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with tin-plated leads, UL 94V-0 molding compound |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, epoxy-molded, cathode indicated by band marking; terminals are anode and cathode with no internal circuitry - polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; conducts during forward surge events (e.g., load dump reversal) |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., battery rail); avalanches into conduction when line voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TCT, HAST, and ESD - eliminates qualification overhead for Tier 1 suppliers |
| 500W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump up to 60V/100ms) without degradation when mounted per JEDEC standards |
| <1.0ps response time | Clamps ESD events (IEC 61000-4-2 ±8kV contact) before sensitive logic inputs reach destructive voltage thresholds |
| RoHS & halogen-free | Complies with EU RoHS Directive 2011/65/EU and IEC 61249-2-21 - supports green manufacturing and end-of-life recycling |
| DO-204AC mechanical robustness | UL 94V-0 flammability rating and JESD201 Class 2 whisker resistance ensure long-term reliability in vibration-prone automotive harnesses |
Applications
| Automotive Power Rail Protection | CAN/LIN Transceiver Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients before DC-DC converter input stage. Use Value: Limits peak voltage to ≤268V during ISO 7637-2 Pulse 5a, preventing overvoltage failure of upstream PMICs and microcontrollers. | Use Scenario: Safeguarding high-speed CAN FD or LIN bus physical layer transceivers from ESD and coupling noise. IC Role / Device Role / Timing Role: TVS connected between CAN_H/CAN_L lines and chassis ground to shunt common-mode transients without affecting signal integrity. Use Value: Sub-nanosecond response ensures clamping occurs before transceiver I/O pins exceed absolute maximum ratings during ±8kV IEC 61000-4-2 discharge. |
| Industrial Motor Drive I/O Protection | LED Lighting Driver Input Protection |
Use Scenario: Shielding PLC digital I/O modules from inductive kickback when driving solenoids or relays. IC Role / Device Role / Timing Role: SA150H installed across relay coil terminals or on 24V supply input to isolate controller-side logic from flyback energy. Use Value: 70A single-half-sine surge rating handles repetitive 8.3ms inductive spikes without parameter drift or thermal runaway. | Use Scenario: Securing constant-current LED drivers against AC line surges and lightning-induced transients in outdoor lighting. IC Role / Device Role / Timing Role: Mounted at AC-DC rectifier output to clamp overvoltage before buck/boost controller IC input. Use Value: 150V VWM aligns with 120VAC-derived DC bus (~170Vpk), allowing normal operation while suppressing >200V transients to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A | Same 150V VWM, but bidirectional; 274V VC @ 1.8A; SMA package (surface-mount) | Requires PCB layout change; suitable for space-constrained designs where polarity-agnostic clamping is acceptable | Select SMAJ150A only if board real estate is limited and bidirectional protection is required - SA150H offers lower profile height and axial lead mechanical retention. |
| P6SMB150A | 150V VWM, bidirectional, 274V VC @ 1.8A; same DO-204AC package; not AEC-Q101 qualified | Lacks automotive qualification; appropriate for industrial/commercial applications without automotive reliability mandates | Choose P6SMB150A for cost-sensitive non-automotive designs; SA150H is mandatory where AEC-Q101 compliance is contractually required. |
Compared with SMAJ150A and P6SMB150A, the SA150H provides AEC-Q101 qualification and unidirectional polarity in the same DO-204AC form factor - making it the sole choice for automotive power rail protection where qualification, polarity control, and mechanical robustness are jointly required.
Availability
SA150H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial motor drive I/O safeguarding, and LED driver input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SA150H 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection, and signal conditioning devices since 1979.
The SA Series TVS diodes are engineered specifically for automotive-grade transient suppression - emphasizing AEC-Q101 reliability, tight VBR tolerance, and robust clamping consistency across temperature and lifetime.
FAQ
What does the "H" suffix in SA150H signify?
The "H" suffix in SA150H indicates full AEC-Q101 qualification per Rev D requirements, including high-temperature operating life (HTOL), temperature cycling (TCT), and unbiased highly accelerated stress test (uHAST). This certification confirms SA150H meets automotive-grade reliability standards for under-hood deployment - unlike standard SA150 parts which lack this validation.
Is SA150H unidirectional or bidirectional, and how is polarity identified?
SA150H is a unidirectional TVS diode. Polarity is marked by a cathode band on the DO-204AC body - the banded end connects to the protected line (e.g., battery rail), while the unbanded end connects to ground. Bidirectional variants use "CA" or "C" suffixes (e.g., SA150CA); SA150H must be oriented correctly to function as specified.
What is the maximum clamping voltage of SA150H under standard surge conditions?
The maximum clamping voltage of SA150H is 268V at 1.9A peak pulse current with a 10/1000μs waveform - measured per IEC 61000-4-5 and ISO 7637-2. This value represents the highest voltage imposed on the protected circuit during worst-case surge events, ensuring downstream components remain within safe operating limits.
Can SA150H replace SA150 in an existing design?
Yes, SA150H is a drop-in replacement for SA150 in the same DO-204AC package with identical electrical parameters - the only difference is AEC-Q101 qualification. No PCB or schematic changes are needed; however, SA150H adds automotive reliability assurance for applications requiring formal qualification evidence in PPAP or APQP documentation packages.
What is the junction temperature limit and thermal derating behavior of SA150H?
SA150H has a maximum junction temperature of +175°C and derates linearly above 25°C ambient - peak pulse power drops to ~300W at 85°C and ~150W at 125°C per Fig.2 in the datasheet. For sustained operation, its 3W steady-state power rating applies when mounted on 10×10mm copper pads, supporting thermal management in high-ambient automotive environments.
SA150H 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 268V
- Current - Peak Pulse (10/1000µs):
- 1.9A
- 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)
SA150H FAQ
1.How can I place an order for SA150H through Aetrix?
Please submit a Request for Quotation (RFQ) for SA150H 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 SA150H reliable?
The price and inventory of SA150H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA150H is usually 5 days.
3.What payment methods are accepted for SA150H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA150H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA150H?
SA150H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA150H 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 SA150H?
For technical support, including SA150H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA150H requirements.
6.How does Aetrix verify that SA150H is sourced from the original manufacturer or authorized distributors?
All SA150H 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 SA150H meets industry standards.
7.What is the process for return or replacement of SA150H?
All SA150H units undergo pre-shipment inspection (PSI). If there is an issue with SA150H, 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 SA150H part is unused and in its original packaging.
Return procedure for SA150H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA150H Tags
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