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Taiwan Semiconductor Corporation SMA6J17A
- Part No.:
- SMA6J17A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J17A.pdf
- Description:
- TVS DIODE 17VWM 26.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,700
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Product details
Overview
SMA6J17A from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff voltage of 17 V, breakdown voltage range 18.9–20.9 V, clamping voltage of 26.7 V at 22.5 A, and DO-214AC (SMA) package. It delivers fast response (<1.0 ps), meets ISO 7637-2 Pulse 1/2a/2b/3a/3b, and is used in automotive DC/DC converters for load-dump protection.
For engineers reviewing the SMA6J17A datasheet, SMA6J17A pinout, SMA6J17A application, or SMA6J17A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, junction temperature rating up to +175 °C, RoHS/halogen-free compliance, and compatibility with automated SMT placement on power rails subject to transients.
Technical Context
This unidirectional TVS diode operates as a reverse-biased avalanche clamp, activated when reverse voltage exceeds VBR (18.9–20.9 V). Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at 17 V).
The device handles non-repetitive 10/1000 µs surges up to 22.5 A with peak pulse power of 600 W, and supports steady-state dissipation of 4 W. Polarity is marked by cathode band; terminals are matte tin-plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 18.9–20.9 V - Verified avalanche breakdown threshold ensuring predictable turn-on |
| VC @ IPPM=22.5 A | 26.7 V - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 600 W - Peak pulse power handling per standard 10/1000 µs waveform |
| TJ Range | −55 to +175 °C - Extended thermal operation for under-hood automotive environments |
| IR @ VWM | ≤1.0 µA - Low leakage preserves efficiency in high-impedance bias networks |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case rated UL 94V-0, cathode-indicated band, matte tin-plated leads, 0.060 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / reference node | Connected to system ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Transient sensing & clamping node | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and life cycles |
| Fast response time <1.0 ps | Enables effective suppression of ESD and fast-edge transients before sensitive ICs are damaged |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive power-line immunity in passenger and commercial vehicles |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow, supporting standard SMT assembly without process modification |
| Halogen-free & RoHS compliant | Meets global environmental regulations and enables use in green electronics manufacturing |
Applications
| Automotive DC/DC Converters | Industrial SMPS Inputs |
|---|---|
Use Scenario: Protection of 12 V–24 V input rails in buck-derived DC/DC modules exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input rail and ground to limit voltage excursions during ISO 7637-2 Pulse 5a events. Use Value: Clamps to 26.7 V at 22.5 A, preventing MOSFET gate oxide failure and controller latch-up in wide-input converters. | Use Scenario: Input-stage surge suppression in DIN-rail mounted 48 V industrial switch-mode power supplies. IC Role / Device Role / Timing Role: Primary transient shunt on AC-DC rectified bus or isolated DC input, coordinated with MOVs for multi-level protection. Use Value: 600 W peak power rating sustains multiple 10/1000 µs surges without degradation, supporting Class II overvoltage category compliance. |
| LED Driver Power Rails | On-Board Charger (OBC) Auxiliary Supplies |
Use Scenario: Transient protection on constant-current LED driver inputs subjected to inductive switching noise and cable discharge. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 17 V) placed upstream of PWM controller ICs and current-sense amplifiers. Use Value: Sub-1 µA leakage at 17 V avoids false triggering and preserves dimming accuracy in precision analog control loops. | Use Scenario: 12 V auxiliary supply protection in EV on-board chargers, where 12 V systems interface with high-voltage battery domains. IC Role / Device Role / Timing Role: Clamp on low-voltage control rail shared across MCU, CAN transceivers, and relay drivers. Use Value: +175 °C max junction temperature enables reliable operation near heat-generating SiC power stages without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J17CA | Bidirectional variant; symmetric ±17 V standoff; higher capacitance due to dual-junction structure | Required where differential or AC-coupled lines need protection (e.g., RS-485, CAN bus stubs) | Select SMA6J17CA only if bidirectional clamping is mandated; SMA6J17A is optimal for unidirectional DC rails. |
| SMC6J17A | Larger DO-214AB (SMC) package; same electrical specs but higher thermal mass and 1.5× footprint | Preferred in high-power or thermally constrained designs requiring enhanced PPK margin or board-level heat spreading | Choose SMC6J17A when PCB layout allows larger pad area and thermal relief is critical; SMA6J17A suits space-constrained SMT layouts. |
Compared with SMA6J17CA and SMC6J17A, the SMA6J17A offers the smallest footprint for unidirectional 17 V rail protection, optimized for automated placement and high-density automotive ECUs where board space and assembly yield are prioritized.
Availability
SMA6J17A is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS inputs, and LED driver power rails requiring stable component supply with full traceability and lifecycle management.
Supply support for SMA6J17A 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, and rectifiers with global AEC-Q200 qualification capability.
The SMA6JxxA series was designed specifically for robust, high-reliability transient suppression in automotive and industrial power systems where compact size, ISO 7637-2 compliance, and extended temperature operation are mandatory.
FAQ
What is the maximum clamping voltage of the SMA6J17A under standard test conditions?
The SMA6J17A exhibits a maximum clamping voltage (VC) of 26.7 V when subjected to a 10/1000 µs surge waveform at its rated peak pulse current of 22.5 A. This value is measured per JEDEC standards and guarantees consistent overvoltage limiting behavior across production lots. The SMA6J17A's clamping performance is validated at TA = 25 °C and remains stable across its full −55 °C to +175 °C operating junction range.
Does the SMA6J17A meet automotive transient immunity standards?
Yes, the SMA6J17A meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for 12 V and 24 V automotive power networks. It is not rated for Pulse 5a (load dump), which requires higher clamping energy handling; however, its 600 W peak pulse power rating supports coordination with upstream TVS or Zener-based load-dump protectors. The SMA6J17A is AEC-Q200 stress-tested by Taiwan Semiconductor.
What is the polarity configuration and marking convention for the SMA6J17A?
The SMA6J17A is a unidirectional TVS diode with cathode indicated by a visible band on the DO-214AC (SMA) package body. Its marking code is "6BR", laser-etched on the device surface. During PCB layout, the banded end must connect to the protected line (e.g., 12 V rail), while the anode connects to ground-reversing this orientation disables clamping functionality. Polarity is confirmed in TSC's E2102 datasheet, page 5.
Can the SMA6J17A be used in reflow soldering processes without moisture-related defects?
Yes, the SMA6J17A has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH and placed directly into standard lead-free reflow profiles (e.g., JEDEC J-STD-020D) without baking. This eliminates pre-conditioning steps, reduces assembly cost, and improves first-pass yield in high-volume SMT lines handling automotive-grade components like the SMA6J17A.
How does the SMA6J17A compare to the SMA6J17CA in terms of circuit integration?
The SMA6J17A is unidirectional and intended for DC rail protection, whereas the SMA6J17CA is bidirectional with symmetrical ±17 V standoff and clamping. Integrating the SMA6J17CA in place of the SMA6J17A requires verifying that the protected node lacks DC bias or can tolerate reverse conduction-otherwise, leakage or unintended conduction may occur. The SMA6J17A remains the correct choice for conventional 12 V/24 V automotive and industrial power rails.
SMA6J17A 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 26.7V
- Current - Peak Pulse (10/1000µs):
- 22.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J17A FAQ
1.How can I place an order for SMA6J17A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J17A 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 SMA6J17A reliable?
The price and inventory of SMA6J17A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J17A is usually 5 days.
3.What payment methods are accepted for SMA6J17A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J17A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J17A?
SMA6J17A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J17A 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 SMA6J17A?
For technical support, including SMA6J17A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J17A requirements.
6.How does Aetrix verify that SMA6J17A is sourced from the original manufacturer or authorized distributors?
All SMA6J17A 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 SMA6J17A meets industry standards.
7.What is the process for return or replacement of SMA6J17A?
All SMA6J17A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J17A, 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 SMA6J17A part is unused and in its original packaging.
Return procedure for SMA6J17A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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