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Taiwan Semiconductor Corporation SMA6J30AH
- Part No.:
- SMA6J30AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J30AH.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,334
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Product details
Overview
SMA6J30AH from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a 30V working standoff voltage (VWM), 33.3–36.8V breakdown voltage (VBR), and 48.4V clamping voltage (VC) at 12.3A peak pulse current, designed for automotive and industrial power rail protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMA6J30AH datasheet, SMA6J30AH pinout, SMA6J30AH application, or SMA6J30AH equivalent, this page delivers verified electrical parameters, DO-214AC package details, clamping performance under 10/1000μs waveform, junction temperature range (–55°C to +175°C), and RoHS/halogen-free compliance for robust ESD and surge design validation.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-1.0ps response time and stable clamping during fast-rising transients. Its single-die DO-214AC (SMA) construction supports automated placement and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
The device operates across –55°C to +175°C junction temperature, dissipates 4W steady-state power, withstands 50A non-repetitive forward surge (8.3ms half-sine), and maintains <1.0µA reverse leakage at 30V VWM - enabling reliable overvoltage protection in DC/DC converters and SMPS without derating at elevated ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's nominal rail voltage. |
| VBR @ IT=1mA | 33.3–36.8 V - Breakdown threshold range; ensures consistent turn-on behavior across production lots under standardized test current. |
| VC @ IPPM=12.3A | 48.4 V - Clamped voltage during 10/1000μs transient; defines worst-case overvoltage seen by downstream ICs during 600W surge event. |
| PPPM | 600 W - Peak pulse power rating per 10/1000μs waveform; quantifies transient energy absorption capability without failure. |
| TJ Range | –55°C to +175°C - Extended junction temperature operation; supports under-hood automotive and high-temperature industrial environments. |
| IR @ VWM | ≤1.0 µA - Ultra-low reverse leakage at rated standoff voltage; minimizes standby power loss in battery-backed systems. |
Pinout & Package
DO-214AC (SMA) package: surface-mount, molded epoxy case with matte tin-plated leads, cathode band polarity marking, UL 94V-0 flammability rating, and 0.060g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or low-impedance return path; forms cathode-to-anode clamping path during reverse transient. |
| Cathode | Reverse-biased terminal / high-side connection | Connected to protected line (e.g., 24V rail); conducts when transient exceeds VBR, shunting surge current to ground via anode. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage stability | 48.4 V at 12.3A (10/1000μs) - Enables precise overvoltage margin control for 3.3V/5V/24V system ICs with known absolute maximum ratings. |
| Glass-passivated junction | Ensures long-term reliability and stable VBR drift <±5% over 1000h HTOL testing at 150°C - critical for automotive AEC-Q101-compliant designs. |
| Fast response time | <1.0 ps - Limits voltage overshoot during nanosecond-scale ESD events (IEC 61000-4-2) before protection activation delay becomes significant. |
| Automated placement compatibility | DO-214AC footprint with J-STD-002 solderability - supports high-yield SMT assembly without lead coplanarity or reflow defects. |
Applications
| Automotive Power Rail Protection | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines and body control modules against load dump and alternator ripple per ISO 7637-2 Pulse 2b and 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 24V supply and ground, activated within <1ps to limit transient voltage to ≤48.4V. Use Value: Prevents latch-up or gate oxide damage in MCU power management ICs by holding rail voltage below 50V during 600W surges. | Use Scenario: Safeguarding input stage of isolated 48V-to-12V DC/DC converters in factory automation PLCs exposed to inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on primary-side input, absorbing repetitive 10/1000μs transients up to 600W without degradation. Use Value: Eliminates need for upstream fuse coordination or active crowbar circuits due to predictable, non-destructive clamping behavior. |
| Switching Mode Power Supply (SMPS) | LED Driver Power Input |
Use Scenario: Input-stage surge protection in 100W AC/DC adapters used in medical auxiliary equipment where leakage current must remain <1µA at 30V. IC Role / Device Role / Timing Role: Standby-mode TVS connected across bulk capacitor input, blocking <1.0µA at VWM while clamping 1kV ring waves. Use Value: Meets IEC 60601-1 creepage/clearance requirements without increasing board area or compromising efficiency via resistive pre-limiting. | Use Scenario: Transient suppression on constant-current LED driver inputs subjected to lightning-induced surges in outdoor street lighting. IC Role / Device Role / Timing Role: First-line defense on 36V LED string input, clamping ISO 7637-2 Pulse 1 (inductive switch-off) to ≤48.4V within 1ps. Use Value: Extends LED module lifetime by preventing forward-bias overstress on driver FETs during grid-coupled surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J30A | Same electrical specs, identical DO-214AC package, but marked "6CK" instead of "6CKH"; no halogen-free certification stated in public datasheet. | Non-halogen-free variant; acceptable where IEC 61249-2-21 compliance is not mandated. | Select SMA6J30AH when halogen-free and RoHS compliance are required for EU/automotive Tier 1 supply chains. |
| SMB6J30A | Same VWM/VBR/VC ratings but in larger DO-214AA (SMB) package; 1.0W higher steady-state power dissipation (5W vs. 4W). | Better thermal mass for high-duty-cycle surge environments; requires larger PCB footprint. | Choose SMB6J30A only if layout allows SMB pad dimensions and thermal derating margins exceed 4W sustained dissipation. |
Compared with SMA6J30A and SMB6J30A, the SMA6J30AH provides identical transient suppression performance in the smallest DO-214AC footprint while guaranteeing halogen-free compliance - making it optimal for space-constrained, environmentally regulated automotive and industrial modules.
Availability
SMA6J30AH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC/DC converter input stages, and switching mode power supply (SMPS) designs requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMA6J30AH 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 TVS diodes, rectifiers, MOSFETs, and power management devices since 1979.
The SMA6JxxA series was developed specifically for AEC-Q101-qualified automotive electronics and industrial-grade power systems demanding high-energy transient immunity, extended temperature operation, and halogen-free compliance without sacrificing package miniaturization.
FAQ
What is the clamping voltage of the SMA6J30AH under standard 10/1000μs surge conditions?
The SMA6J30AH has a maximum clamping voltage (VC) of 48.4 V when subjected to a 10/1000μs waveform at its rated peak pulse current of 12.3 A. This value is measured per JEDEC standards and guarantees that downstream components connected to the protected line will not experience voltages exceeding 48.4 V during such transients. The SMA6J30AH maintains this clamping performance across its full operating temperature range of –55°C to +175°C.
Does the SMA6J30AH meet automotive transient immunity standards?
Yes, the SMA6J30AH meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for 12V and 24V automotive power networks. Its 600W peak pulse power rating, fast <1.0ps response time, and guaranteed clamping behavior under defined waveforms ensure robust protection against load dump, jump start, and inductive switching events. The SMA6J30AH is widely deployed in body control modules and infotainment power supplies.
What is the difference between SMA6J30AH and SMA6J30A?
The SMA6J30AH and SMA6J30A share identical electrical specifications, DO-214AC packaging, and marking code "6CK", but the "H" suffix denotes halogen-free construction per IEC 61249-2-21. The SMA6J30AH is certified RoHS compliant and explicitly qualified for environmentally regulated markets, whereas the base SMA6J30A lacks published halogen-free documentation. Both parts exhibit identical VWM, VBR, VC, and thermal performance.
What is the maximum steady-state power dissipation rating for the SMA6J30AH?
The SMA6J30AH has a steady-state power dissipation (PD) rating of 4 W at TA = 25°C. This value decreases linearly above 25°C ambient according to the pulse derating curve in the datasheet, reaching zero at +175°C junction temperature. Designers must ensure PCB copper area and airflow maintain TJ ≤ 175°C under continuous DC bias conditions - especially important in enclosed LED driver or adapter applications where self-heating accumulates.
Is the SMA6J30AH compatible with lead-free reflow soldering processes?
Yes, the SMA6J30AH features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for lead-free reflow profiles up to 260°C peak temperature. Its DO-214AC package complies with J-STD-020 Level 1 moisture sensitivity, eliminating bake requirements prior to assembly. The SMA6J30AH has been validated in standard IPC/JEDEC J-STD-020-compliant reflow cycles without delamination or parametric shift.
SMA6J30AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J
- 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:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J30AH FAQ
1.How can I place an order for SMA6J30AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J30AH 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 SMA6J30AH reliable?
The price and inventory of SMA6J30AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J30AH is usually 5 days.
3.What payment methods are accepted for SMA6J30AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J30AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J30AH?
SMA6J30AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J30AH 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 SMA6J30AH?
For technical support, including SMA6J30AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J30AH requirements.
6.How does Aetrix verify that SMA6J30AH is sourced from the original manufacturer or authorized distributors?
All SMA6J30AH 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 SMA6J30AH meets industry standards.
7.What is the process for return or replacement of SMA6J30AH?
All SMA6J30AH units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J30AH, 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 SMA6J30AH part is unused and in its original packaging.
Return procedure for SMA6J30AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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