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Taiwan Semiconductor Corporation SMA6J15A R3G
- Part No.:
- SMA6J15A R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J15A R3G.pdf
- Description:
- TVS DIODE 15VWM 23.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,686
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Product details
Overview
SMA6J15A from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff voltage of 15 V, breakdown voltage range 16.7–18.5 V, and clamping voltage of 23.6 V at 25.4 A peak pulse current; designed for surge protection in DC/DC converters and automotive power systems.
For engineers reviewing the SMA6J15A datasheet, SMA6J15A pinout, SMA6J15A application, or SMA6J15A equivalent, key selection criteria include its DO-214AC (SMA) package, 10/1000 µs waveform rating, ISO 7637-2 compliance, junction temperature range (−55°C to +175°C), and low-profile automated placement suitability.
Technical Context
This unidirectional TVS diode operates as a clamping device in reverse-biased configuration, activating when transient voltage exceeds its breakdown threshold (VBR = 16.7–18.5 V at IT = 1 mA). Its glass-passivated junction ensures stable leakage performance (IR ≤ 1 µA at VWM = 15 V) and fast response (<1.0 ps).
The device handles 600 W peak pulse power under 10/1000 µs waveform, with maximum clamping voltage VC = 23.6 V at IPPM = 25.4 A, enabling robust protection of downstream 15 V rail components against ESD, load dump, and switching transients per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 16.7–18.5 V - Verified breakdown threshold ensuring reliable turn-on margin above VWM |
| VC @ IPPM=25.4 A | 23.6 V - Clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 600 W - Peak pulse power handling capability under standardized surge waveform |
| IR @ VWM | ≤1 µA - Low leakage preserves efficiency in always-on 15 V bias rails |
| TJ Range | −55°C to +175°C - Enables deployment in under-hood automotive and industrial environments |
Pinout & Package
DO-214AC (SMA) package: surface-mount, single-diode configuration with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane to complete clamping loop |
| Cathode | Reverse-biased input / Protected line connection | Connected to 15 V supply rail; conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - Ensures clamping activation before transient energy damages sensitive ICs |
| Glass passivated junction | Stable VBR and low IR across temperature and lifetime, critical for automotive reliability |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow, simplifying SMT assembly |
Applications
| Switching Mode Power Supply (SMPS) | Automotive On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side synchronous rectifiers against flyback spikes and cross-conduction transients. IC Role / Device Role: Unidirectional clamping TVS placed across input/output rails to limit voltage excursions during switching transitions. Use Value: Prevents gate oxide breakdown in 15 V-rated controllers by clamping surges to ≤23.6 V while sustaining 600 W peak power. | Use Scenario: Guarding 15 V auxiliary rails in engine control units (ECUs) and body control modules (BCMs) against load dump and jump-start pulses. IC Role / Device Role: Transient suppressor connected between 15 V output and chassis ground to shunt ISO 7637-2 Pulse 2b/5a energy. Use Value: Maintains system uptime by surviving repeated 10/1000 µs surges up to 25.4 A without degradation, per AEC-Q101 stress requirements. |
| LED Lighting Driver | Industrial AC/DC Adapter |
Use Scenario: Safeguarding constant-current LED driver ICs from line-induced transients during hot-plug or dimmer switching. IC Role / Device Role: Reverse-biased TVS across LED string supply to clamp overvoltage before it reaches current-sense amplifier inputs. Use Value: Limits clamping voltage to 23.6 V-well below typical 30 V absolute max ratings of driver ICs-ensuring long-term reliability. | Use Scenario: Input-stage surge suppression in universal-input (90–264 VAC) adapters delivering regulated 15 V output to IoT gateways. IC Role / Device Role: Secondary-side TVS on DC output rail to absorb residual transients escaping primary-side MOV/clamp networks. Use Value: Provides final-stage defense with <1 µA leakage, avoiding standby power penalty while meeting IEC 61000-4-5 Level 3 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J15CA | Bidirectional configuration; symmetric clamping (±23.6 V); same VWM, VBR, PPPM | Required where AC-coupled lines or bidirectional signal paths need protection (e.g., RS-485, CAN bus) | Select SMA6J15CA only if polarity-agnostic clamping is needed; SMA6J15A is optimal for unidirectional 15 V DC rails. |
| SMB6J15A | Same electrical specs but DO-214AA (SMB) package; 2.59 mm height vs. SMA's 2.29 mm; 1.0 mm wider body | Used when board space allows larger footprint or higher thermal mass is preferred | Choose SMB6J15A if PCB layout accommodates larger pad area and thermal dissipation benefits outweigh height constraints. |
Compared with SMA6J15CA and SMB6J15A, the SMA6J15A offers lowest profile in the 15 V 600 W TVS family, optimized for space-constrained 15 V DC applications where unidirectional clamping suffices and height clearance is limited to ≤2.29 mm.
Availability
SMA6J15A is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC/DC converters, and LED lighting drivers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMA6J15A 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 high-reliability protection devices and power management components.
The SMA6JxxA series belongs to TSC's transient voltage suppressor product line, engineered specifically for automotive-grade and industrial-grade DC power rail protection with stringent ISO 7637-2 and AEC-Q101 alignment.
FAQ
What is the maximum clamping voltage of the SMA6J15A under standard test conditions?
The SMA6J15A exhibits a maximum clamping voltage (VC) of 23.6 V when subjected to a 10/1000 µs waveform with peak pulse current (IPPM) of 25.4 A. This value is measured per JEDEC standards and ensures protected circuits remain within safe operating limits during surge events. The SMA6J15A maintains this clamping performance across its full operating temperature range.
Does the SMA6J15A meet automotive transient immunity standards?
Yes, the SMA6J15A meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (supply line transients), and Pulse 3a/3b (capacitive coupling), making it suitable for automotive 15 V rail protection. It is not AEC-Q101 qualified out-of-box, but its construction-including glass passivation, MSL1 rating, and −55°C to +175°C junction range-supports qualification-ready designs. Always verify final application compliance with system-level testing.
What is the reverse leakage current specification for the SMA6J15A at its working voltage?
The SMA6J15A specifies a maximum reverse leakage current (IR) of 1 µA when biased at its working standoff voltage (VWM) of 15 V and ambient temperature of 25°C. This low leakage minimizes power loss in always-on 15 V rails and supports high-efficiency designs such as battery-backed systems and energy-sensitive lighting drivers using the SMA6J15A.
Can the SMA6J15A be used in place of the SMA6J15CA?
No-the SMA6J15A is unidirectional, while the SMA6J15CA is bidirectional. Substituting SMA6J15A for SMA6J15CA in AC-coupled or polarity-agnostic applications (e.g., CAN bus, RS-485) will result in incomplete protection during negative transients. The SMA6J15A is correct only for DC rails where the protected node is referenced to ground and surges are expected only in one polarity.
What is the recommended PCB pad layout for the SMA6J15A in DO-214AC (SMA) package?
Taiwan Semiconductor recommends using the DO-214AC (SMA) suggested pad layout per datasheet Version E2102: 2.5 mm × 1.5 mm rectangular pads with 1.5 mm center-to-center spacing and 0.5 mm solder mask opening extension. Thermal relief vias under the cathode/anode pads improve heat dissipation during repetitive surges. The SMA6J15A's matte tin-plated leads ensure compatibility with standard lead-free reflow profiles.
SMA6J15A R3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 23.6V
- Current - Peak Pulse (10/1000µs):
- 25.4A
- 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)
SMA6J15A R3G FAQ
1.How can I place an order for SMA6J15A R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J15A R3G 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 SMA6J15A R3G reliable?
The price and inventory of SMA6J15A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J15A R3G is usually 5 days.
3.What payment methods are accepted for SMA6J15A R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J15A R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J15A R3G?
SMA6J15A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J15A R3G 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 SMA6J15A R3G?
For technical support, including SMA6J15A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J15A R3G requirements.
6.How does Aetrix verify that SMA6J15A R3G is sourced from the original manufacturer or authorized distributors?
All SMA6J15A R3G 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 SMA6J15A R3G meets industry standards.
7.What is the process for return or replacement of SMA6J15A R3G?
All SMA6J15A R3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J15A R3G, 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 SMA6J15A R3G part is unused and in its original packaging.
Return procedure for SMA6J15A R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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