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Taiwan Semiconductor Corporation SMA6J13A
- Part No.:
- SMA6J13A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J13A.pdf
- Description:
- TVS DIODE 13VWM 20.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,802
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Product details
Overview
SMA6J13A from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff voltage of 13 V, breakdown voltage range 14.4–15.9 V, clamping voltage of 20.4 V at 29.4 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 for overvoltage protection in DC/DC converters and automotive power modules.
For engineers reviewing the SMA6J13A datasheet, SMA6J13A pinout, SMA6J13A application, or SMA6J13A equivalent, key selection criteria include clamping performance at 29.4 A, 13 V working voltage compatibility, DO-214AC mechanical fit, moisture sensitivity level 1 compliance, and ISO 7637-2 immunity validation for automotive electronics design.
Technical Context
This unidirectional TVS diode operates as a reverse-biased avalanche clamp, activated when transient voltage exceeds its breakdown threshold (14.4–15.9 V at 1 mA). Its glass-passivated junction ensures stable leakage (<1.0 µA at 13 V) and robust surge handling under repetitive or single-pulse stress.
The device sustains 600 W peak pulse power per 10/1000 µs waveform, derates linearly above 25°C ambient, and maintains operation across –55°C to +175°C junction temperature. It supports automated placement and complies with JESD201 Class 2 whisker resistance and UL 94V-0 molding compound requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1 mA | 14.4–15.9 V - Verified avalanche onset range ensuring reliable turn-on margin above VWM |
| VC @ IPPM=29.4 A | 20.4 V - Clamped voltage during 10/1000 µs transient, limiting downstream circuit stress |
| PPPM | 600 W - Peak pulse power dissipation capability under standardized surge waveform |
| IPPM | 29.4 A - Maximum non-repetitive peak current the device safely clamps without failure |
| TJ Range | –55°C to +175°C - Extended thermal operating envelope suitable for under-hood automotive use |
| Moisture Sensitivity | Level 1 (J-STD-020) - No floor life limitation; safe for standard SMT reflow without baking |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode-indicating band; two-terminal unidirectional configuration; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-impedance path during clamping | Connected to system ground or lower-potential rail to enable reverse-biased clamping action |
| Cathode | Transient voltage sensing node / high-impedance input | Connected to protected line (e.g., 13 V rail); avalanche conduction begins when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage at rated current | 20.4 V @ 29.4 A - Enables robust protection of 13 V logic and power rails without over-clamp stress |
| Response time | <1.0 ps - Faster than most ESD events, minimizing voltage overshoot before suppression engages |
| ISO 7637-2 compliance | Pulse 1/2a/2b/3a/3b validated - Certified for automotive load-dump and inductive-switching immunity |
| Glass passivation | Stable junction integrity - Ensures long-term leakage stability and reliability under thermal cycling |
| Halogen-free construction | IEC 61249-2-21 compliant - Meets environmental requirements for RoHS-compliant industrial and automotive PCBs |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges exceeding 13 V. Use Value: Limits peak voltage to 20.4 V during 29.4 A transients, preserving MCU and sensor ICs rated for ≤24 V absolute maximum. | Use Scenario: Input-side surge suppression in isolated 13 V output DC/DC modules for factory automation controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side 13 V output bus. Use Value: Maintains output regulation integrity by preventing transient-induced latch-up in downstream LDOs and interface ICs. |
| LED Driver Power Stages | USB-C Power Delivery Adapters |
Use Scenario: Overvoltage guard for constant-current LED strings powered from 13 V buck drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kickback from driver MOSFET switching. Use Value: Prevents LED string open-circuit failure by clamping flyback spikes to 20.4 V, within LED forward voltage tolerance. | Use Scenario: Secondary-side rail protection in compact USB-C PD adapters delivering 13 V PPS profiles. IC Role / Device Role / Timing Role: Standby-mode clamp on regulated 13 V output to absorb coupling noise and plug-in transients. Use Value: Guarantees <1.0 µA leakage at 13 V, avoiding standby current drift while enabling fast 20.4 V clamping during fault 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 |
|---|---|---|---|
| SMA6J13CA | Bidirectional variant; symmetric clamping (±20.4 V); higher IR (5 µA @ 13 V) | Required where AC-coupled or bidirectional signal lines need protection (e.g., RS-485) | Select SMA6J13CA only if polarity-agnostic clamping is needed; SMA6J13A is optimal for DC rail protection. |
| SMB6J13A | Larger SMB package (DO-214AA); same electrical specs; 1.0 W steady-state power rating vs. 4 W for SMA6J13A | Preferred where board space allows larger footprint and higher thermal mass is beneficial | Choose SMB6J13A for improved thermal dissipation in high-ambient environments; SMA6J13A fits tighter layouts. |
Compared with SMA6J13CA and SMB6J13A, the SMA6J13A offers the best combination of compact DO-214AC footprint, 4 W steady-state power handling, and ultra-low 1.0 µA leakage-making it ideal for space-constrained 13 V DC rail protection where unidirectional clamping suffices.
Availability
SMA6J13A is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, and LED driver power stages requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMA6J13A 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, and power MOSFETs.
The SMA6JxxA series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for ISO 7637-2 compliance and under-hood thermal resilience in 12 V/24 V vehicle systems.
FAQ
What is the maximum clamping voltage of the SMA6J13A under standard test conditions?
The SMA6J13A exhibits a maximum clamping voltage (VC) of 20.4 V when subjected to its rated peak pulse current of 29.4 A using the 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees predictable overvoltage limiting for 13 V system rails. The SMA6J13A datasheet confirms this clamping performance at TA = 25°C with no derating applied.
Does the SMA6J13A meet automotive transient immunity standards?
Yes, the SMA6J13A is explicitly validated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test waveforms per Taiwan Semiconductor's official documentation. Its 600 W pulse rating and sub-1 ps response ensure robust protection against load dump, inductive switching, and supply interruption events common in automotive 12 V networks. The SMA6J13A qualification report cites full compliance without external conditioning circuits.
What is the leakage current specification for SMA6J13A at its working voltage?
The SMA6J13A specifies a maximum reverse leakage current (IR) of 1.0 µA at its working standoff voltage (VWM) of 13 V and TA = 25°C. This ultra-low leakage preserves efficiency in always-on 13 V circuits such as automotive body control modules and ensures minimal impact on standby power budgets. The SMA6J13A electrical table confirms this value is guaranteed across production lots.
Is the SMA6J13A compatible with lead-free reflow soldering processes?
Yes, the SMA6J13A features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for standard lead-free reflow profiles up to 260°C peak. Its DO-214AC package and moisture sensitivity level 1 (per J-STD-020) allow direct placement into reflow ovens without pre-baking. The SMA6J13A packaging specification sheet confirms full compatibility with IPC-J-STD-020 Class 3 assembly requirements.
How does the SMA6J13A differ from the SMA6J13CA in practical circuit implementation?
The SMA6J13A is unidirectional and protects only against positive transients on a referenced rail, while the SMA6J13CA is bidirectional and clamps both polarities symmetrically. In a 13 V DC system, the SMA6J13A connects cathode-to-rail/anode-to-ground; the SMA6J13CA requires no polarity assignment but draws 5× higher leakage (5 µA). For pure DC rail protection, the SMA6J13A delivers superior leakage performance and is the correct choice unless AC signal line protection is required.
SMA6J13A 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 20.4V
- Current - Peak Pulse (10/1000µs):
- 29.4A
- 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)
SMA6J13A FAQ
1.How can I place an order for SMA6J13A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J13A 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 SMA6J13A reliable?
The price and inventory of SMA6J13A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J13A is usually 5 days.
3.What payment methods are accepted for SMA6J13A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J13A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J13A?
SMA6J13A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J13A 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 SMA6J13A?
For technical support, including SMA6J13A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J13A requirements.
6.How does Aetrix verify that SMA6J13A is sourced from the original manufacturer or authorized distributors?
All SMA6J13A 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 SMA6J13A meets industry standards.
7.What is the process for return or replacement of SMA6J13A?
All SMA6J13A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J13A, 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 SMA6J13A part is unused and in its original packaging.
Return procedure for SMA6J13A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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