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Taiwan Semiconductor Corporation SA30H
- Part No.:
- SA30H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30H.pdf
- Description:
- 500W, 37V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,890
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Product details
Overview
SA30H from Taiwan Semiconductor is a unidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, 30V working stand-off voltage (VWM), and clamps to ≤53.3V at 9.8A peak pulse current. It delivers fast response (<1.0ps), low leakage (<1μA @ >10V), and operates from –55°C to +175°C - deployed in automotive power line and ECU input protection.
For engineers reviewing the SA30H datasheet, SA30H pinout, SA30H application, or SA30H equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity, 30V VWM / 33.3–40.7V VBR range, 53.3V clamping voltage at 9.8A, and DO-15 mechanical compatibility with high-reliability PCB layouts requiring surge immunity per ISO 7637-2 and IEC 61000-4-5.
Technical Context
The SA30H uses an avalanche breakdown mechanism to clamp transients above its 33.3–40.7V breakdown voltage (VBR) at 1mA test current, with a maximum clamping voltage of 53.3V at 9.8A IPPM under 10/1000μs waveform. Its low dynamic impedance ensures effective suppression of fast-rising EFT and load-dump spikes without thermal runaway.
Designed for unidirectional operation, it features a cathode band marking, pure tin-plated leads compliant with J-STD-002, and meets JESD201 Class 2 whisker resistance. The device sustains 70A non-repetitive forward surge (8.3ms half-sine) and derates linearly above 25°C ambient per Fig.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR min/max | 33.3 V / 40.7 V @ 1 mA - Breakdown voltage range confirming reliable avalanche initiation across process variation and temperature. |
| VC @ IPPM | 53.3 V @ 9.8 A - Clamping voltage during 10/1000μs surge; determines worst-case overvoltage seen by downstream ICs. |
| PPK | 500 W - Peak pulse power rating per 10/1000μs waveform; validates robustness against ISO 7637-2 Pulse 5a/b load dump events. |
| IR @ VWM | <1 μA - Reverse leakage at 30 V; ensures negligible standby power loss and signal integrity in high-impedance sensing nodes. |
| TJ max | +175 °C - Maximum junction temperature; enables placement near hot components (e.g., power MOSFETs, engine control modules). |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 0.400g mass, UL 94V-0 molding, and JESD201 Class 2 whisker resistance. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker requirements. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; completes conduction path during transient clamping. |
| Cathode | Protected line input | Connected to the line being protected (e.g., battery rail, sensor supply); blocks reverse current until VBR exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control units, body controllers, and ADAS power supplies. |
| 500W 10/1000μs surge rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 500W without degradation or parametric shift. |
| <1.0ps response time | Clamps transients before sensitive logic or analog circuitry experiences damaging overvoltage - critical for CAN/LIN bus protection. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained automotive manufacturing. |
| Low IR & stable VBR tempco | Temperature coefficient of VBR = 39 mV/°C ensures predictable clamping across –55°C to +175°C operating range. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients before LDO or DC-DC converter. Use Value: Limits peak voltage to ≤53.3V during 9.8A surge, preventing damage to 36V-rated input stages and ensuring functional safety compliance. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in factory automation PLCs exposed to inductive switching noise. IC Role / Device Role / Timing Role: Front-end TVS on 24V sensor supply line, paired with series resistor and RC filter to attenuate EFT bursts. Use Value: Sub-1ps response prevents latch-up in precision ADC front-ends; <1μA leakage avoids offset drift in microamp-level sensor bias networks. |
| LED Driver Input Protection | Communication Bus Line Protection |
Use Scenario: Shielding constant-current LED drivers in automotive lighting modules from alternator ripple and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional SA30H installed at driver IC input, upstream of bulk capacitance, to absorb repetitive 500W pulses. Use Value: Withstands ≥1000 surges at rated PPK without parameter shift; DO-15 package allows manual rework and high-power trace routing. |
Use Scenario: Guarding LIN bus transceivers against ESD and electrical fast transients in vehicle door modules. IC Role / Device Role / Timing Role: TVS on LIN line (VPWR or VLIN) referenced to ground, leveraging low capacitance and fast response to preserve signal integrity. Use Value: Clamping voltage ≤53.3V ensures transceiver remains within absolute maximum ratings during ±30kV contact ESD (IEC 61000-4-2), avoiding bus lockup. |
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 SMAJ30A | Unidirectional, DO-214AC (SMA) package, 30V VWM, 48.4V VC @ 10.3A, 400W PPK. | Lower peak power rating and surface-mount format; less suitable for high-energy load dump in chassis-grounded systems. | Select SMAJ30A only when board space constraints mandate SMD layout and surge energy is limited to ≤400W. |
| ON Semiconductor 1.5SMC33A | Unidirectional, DO-214AB (SMC) package, 33V VWM, 53.3V VC @ 9.4A, 1500W PPK - significantly higher surge capacity. | Larger SMC package requires more PCB area; higher VWM reduces margin for 30V nominal rails. | Choose 1.5SMC33A where ISO 7637-2 Pulse 5b (1000W) immunity is required, accepting larger footprint and tighter VWM tolerance. |
Compared with SMAJ30A, SA30H offers 25% higher peak power (500W vs. 400W) and AEC-Q101 qualification in through-hole DO-15 for enhanced mechanical reliability; versus 1.5SMC33A, SA30H provides tighter VWM alignment with 30V systems and lower thermal mass for faster board-level heat dissipation.
Availability
SA30H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and communication bus protection requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SA30H 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 specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SA Series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing high surge robustness, tight parametric distribution, and long-term reliability under thermal cycling and vibration stress.
FAQ
What is the AEC-Q101 qualification status of the SA30H?
The SA30H is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H" and documentation (Version L2105). This certification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its suitability for automotive underhood applications such as engine control modules and body electronics where SA30H serves as primary surge protection.
Does SA30H support bidirectional transient suppression?
No, SA30H is a unidirectional TVS diode, as confirmed by its cathode band marking, single-polarity breakdown specification (VBR min/max only listed for unidirectional mode), and absence of bidirectional electrical characteristics in the SA30H datasheet tables. For bidirectional protection, SA30AH - the "A" variant with symmetrical clamping - must be selected instead of SA30H.
What is the maximum clamping voltage of SA30H under standard test conditions?
The maximum clamping voltage (VC) of SA30H is 53.3 V at 9.8 A peak pulse current (IPPM), measured using the 10/1000 μs double-exponential surge waveform. This value is specified in the "Maximum clamping voltage VC@IPPM" row for part number SA30 in the Electrical Characteristics table (Version L2105, Page 3), and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SA30H be used in place of SA30 or SA30A?
SA30H is not a direct replacement for SA30 or SA30A due to its AEC-Q101 qualification, which entails additional screening, traceability, and lot-level documentation - but electrically it matches SA30 (same VWM, VBR, VC, and PPK). SA30A differs with tighter VBR (33.3–36.8 V) and higher VC (64.3 V); substituting SA30H for SA30A risks exceeding downstream IC voltage limits during clamping.
What is the thermal derating behavior of SA30H above 25°C ambient?
SA30H follows the standard pulse derating curve (Fig.2 in L2105 datasheet): peak pulse power decreases linearly from 500W at 25°C to zero at 175°C junction temperature. At 75°C ambient, the device supports ~70% of rated PPK (~350W) when mounted on 10×10 mm copper pads per terminal - critical for thermal design in enclosed automotive junction boxes where SA30H may operate near other heat-generating components.
SA30H 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 9.8A
- 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)
SA30H FAQ
1.How can I place an order for SA30H through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30H 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 SA30H reliable?
The price and inventory of SA30H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30H is usually 5 days.
3.What payment methods are accepted for SA30H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30H?
SA30H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30H 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 SA30H?
For technical support, including SA30H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30H requirements.
6.How does Aetrix verify that SA30H is sourced from the original manufacturer or authorized distributors?
All SA30H 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 SA30H meets industry standards.
7.What is the process for return or replacement of SA30H?
All SA30H units undergo pre-shipment inspection (PSI). If there is an issue with SA30H, 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 SA30H part is unused and in its original packaging.
Return procedure for SA30H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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