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Taiwan Semiconductor Corporation SMA6J30A R3G
- Part No.:
- SMA6J30A R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J30A R3G.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,874
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Product details
Overview
SMA6J30A from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff voltage of 30 V, breakdown voltage range 33.3–36.8 V, and clamping voltage of 48.4 V at 12.3 A peak pulse current; used for surge protection in DC/DC converters and automotive power systems.
For engineers reviewing the SMA6J30A datasheet, SMA6J30A pinout, SMA6J30A application, or SMA6J30A 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 moisture sensitivity level 1 handling requirements.
Technical Context
This unidirectional TVS diode operates as a reverse-biased avalanche clamp, activated when transient voltage exceeds its breakdown threshold (min 33.3 V). Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 30 V) and fast response (<1.0 ps).
The device sustains 600 W peak pulse power under standard 10/1000 µs waveform, with steady-state power dissipation rated at 4 W and peak forward surge current capability of 50 A (8.3 ms half-sine). It meets automotive transient immunity standards per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1 mA | 33.3–36.8 V - Minimum/maximum breakdown voltage defining turn-on threshold |
| VC @ IPPM | 48.4 V - Clamped voltage at 12.3 A peak pulse current, limiting downstream stress |
| PPPM (10/1000 µs) | 600 W - Peak surge energy absorption capacity under standardized transient waveform |
| TJ Range | −55°C to +175°C - Operating junction temperature range enabling under-hood automotive use |
| IR @ VWM | ≤1.0 µA - Reverse leakage current ensuring minimal standby power loss |
| Package | DO-214AC (SMA) - Surface-mount package with cathode band polarity marking and J-STD-002 solderability |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈0.060 g, UL 94V-0 rated compound, JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-impedance path during surge conduction | Connected to protected circuit ground or lower-potential rail during clamping |
| Cathode | Reverse-biased terminal / high-impedance input during normal operation | Connected to line/voltage rail being protected; cathode band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling |
| Fast response time <1.0 ps | Clamps transients before sensitive downstream components experience overvoltage stress |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| Moisture sensitivity level 1 | Enables direct placement without baking or dry-pack handling prior to reflow |
| Halogen-free & RoHS compliant | Meets environmental regulations IEC 61249-2-21 and EU Directive 2011/65/EU |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 24 V battery-fed ECUs against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input rails to clamp transients to ≤48.4 V. Use Value: Prevents damage to upstream regulators and microcontrollers during ISO 7637-2 Pulse 5a events. | Use Scenario: Input-side surge suppression in isolated 48 V-to-12 V DC/DC modules for factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 600 W pulses without degradation over 10⁵ cycles. Use Value: Maintains system uptime by preventing latch-up or burnout during lightning-induced surges on field wiring. |
| LED Driver Power Supplies | Telecom Power Interfaces |
Use Scenario: Overvoltage protection in constant-current LED drivers exposed to AC line transients. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting surge energy away from MOSFET gate drivers and current-sense amplifiers. Use Value: Enables >50,000-hour lifetime in outdoor lighting by suppressing repetitive 10/1000 µs surges up to 12.3 A. | Use Scenario: Secondary-side protection on PoE-powered remote units subjected to induced surges on Ethernet cabling. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ not specified but typical for SMA package <100 pF) minimizing signal integrity impact. Use Value: Preserves 100BASE-TX timing margins while limiting rail excursions to safe levels during ESD or 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 |
|---|---|---|---|
| SMA6J30AHE3/52 (Vishay) | Same DO-214AC package, identical VWM (30 V), VC = 48.4 V, but IR = 5 µA (vs. 1 µA for SMA6J30A) | Higher leakage may affect ultra-low-power sleep modes in battery-backed systems | Select SMA6J30A where sub-1 µA leakage at 30 V is required for extended standby operation |
| P6SMB30A (ON Semiconductor) | Same 30 V VWM, but lower PPPM = 600 W only at 10/1000 µs; TJ max = 150°C (vs. 175°C) | Limited high-temperature operation in engine compartment or industrial enclosures above 150°C | Prefer SMA6J30A for designs requiring full −55°C to +175°C junction operation with no derating |
Compared with SMA6J30AHE3/52 and P6SMB30A, the SMA6J30A offers tighter leakage control and broader temperature capability-critical for automotive and high-reliability industrial deployments where thermal margin and standby current directly impact system certification and lifetime.
Availability
SMA6J30A is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, and LED driver power supplies requiring stable component supply with full traceability and lifecycle management.
Supply support for SMA6J30A 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, serving global automotive, industrial, and consumer markets since 1979.
The SMA6JxxA series is part of TSC's Transient Voltage Suppressor portfolio, engineered specifically for robust, high-energy surge immunity in harsh-environment applications including automotive electronics and industrial power interfaces.
FAQ
What is the maximum clamping voltage of the SMA6J30A under standard test conditions?
The SMA6J30A has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current of 12.3 A under the 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during surge events, ensuring downstream ICs remain within absolute maximum ratings.
Does the SMA6J30A meet automotive transient immunity standards?
Yes, the SMA6J30A meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b, making it suitable for 12 V and 24 V automotive electronic control units. Its 600 W peak pulse power rating, fast response time (<1.0 ps), and −55°C to +175°C operating range align with OEM-level surge protection specifications.
What is the moisture sensitivity level (MSL) of the SMA6J30A, and how does it affect PCB assembly?
The SMA6J30A is rated MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions (≤30°C/60% RH) without baking prior to reflow soldering. This eliminates pre-bake steps and simplifies automated placement in high-volume manufacturing environments using standard lead-free reflow profiles.
How does the SMA6J30A differ from the SMA6J24A in terms of electrical performance?
The SMA6J30A has a higher working standoff voltage (30 V vs. 24 V), breakdown voltage (33.3–36.8 V vs. 26.7–29.5 V), and clamping voltage (48.4 V vs. 37.8 V) than the SMA6J24A. Both share identical 600 W peak pulse power and DO-214AC packaging, but the SMA6J30A is selected for 24–32 V nominal systems where tighter voltage margin above operating rail is required.
Is the SMA6J30A halogen-free and RoHS compliant?
Yes, the SMA6J30A is both halogen-free per IEC 61249-2-21 and RoHS compliant per EU Directive 2011/65/EU. The molding compound contains no brominated flame retardants or chlorine-based additives, and all terminations use matte tin plating meeting J-STD-002 solderability requirements.
SMA6J30A 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J30A R3G FAQ
1.How can I place an order for SMA6J30A R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J30A 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 SMA6J30A R3G reliable?
The price and inventory of SMA6J30A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J30A R3G is usually 5 days.
3.What payment methods are accepted for SMA6J30A R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J30A R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J30A R3G?
SMA6J30A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J30A 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 SMA6J30A R3G?
For technical support, including SMA6J30A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J30A R3G requirements.
6.How does Aetrix verify that SMA6J30A R3G is sourced from the original manufacturer or authorized distributors?
All SMA6J30A 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 SMA6J30A R3G meets industry standards.
7.What is the process for return or replacement of SMA6J30A R3G?
All SMA6J30A R3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J30A 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 SMA6J30A R3G part is unused and in its original packaging.
Return procedure for SMA6J30A R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J30A R3G Tags
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