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Taiwan Semiconductor Corporation SMA6J26AHR3G
- Part No.:
- SMA6J26AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J26AHR3G.pdf
- Description:
- TVS DIODE 26VWM 40.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,385
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Product details
Overview
SMA6J26AHR3G from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a 26V working standoff voltage, 28.9–31.9V breakdown range at 1mA, and 40.9V maximum clamping voltage at 14.7A peak pulse current. It features DO-214AC (SMA) packaging, glass-passivated junction, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics protection.
For engineers reviewing the SMA6J26AHR3G datasheet, SMA6J26AHR3G pinout, SMA6J26AHR3G application, or SMA6J26AHR3G equivalent, key selection criteria include clamping performance under 10/1000μs transients, junction temperature rating up to +175°C, compliance with J-STD-020 Level 1 moisture sensitivity, and suitability for DC/DC converter overvoltage suppression in harsh environments.
Technical Context
This unidirectional TVS diode operates as a reverse-biased avalanche clamp, activated when reverse voltage exceeds VBR (28.9–31.9V). Its low clamping ratio (VC/VBR ≈ 1.3–1.4) ensures effective protection of downstream ICs during fast transients.
Designed for automotive and industrial power systems, it sustains 50A non-repetitive forward surge (8.3ms half-sine), handles steady-state dissipation up to 4W, and maintains stable performance across –55°C to +175°C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1mA | 28.9–31.9 V - Verified breakdown threshold ensuring predictable turn-on under surge |
| VC @ IPPM=14.7A | 40.9 V - Clamped voltage limiting stress on protected circuitry during 10/1000μs transient |
| PPPM | 600 W - Peak pulse power handling capability per standard 10/1000μs waveform |
| IR @ VWM | 1.0 µA - Low leakage preserves efficiency in high-impedance bias networks |
| TJ Range | –55°C to +175°C - Enables deployment in engine bay, powertrain, and industrial motor drive environments |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode indicated by band, UL 94V-0 rated compound, 0.060g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane during clamping event |
| Cathode | Reverse-biased input / Protected line connection | Connected to line being protected (e.g., 24V rail); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability and stable VBR under thermal cycling and humidity exposure |
| Fast response time <1.0 ps | Clamps ESD and fast-edge transients before sensitive logic or analog circuitry is damaged |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and inductive switching immunity without external filtering |
| J-STD-020 Level 1 moisture sensitivity | Enables standard SMT reflow without pre-bake, reducing manufacturing cost and process complexity |
Applications
| Automotive On-Board DC/DC Converters | Industrial Switching Mode Power Supplies |
|---|---|
Use Scenario: Protection of 24V-to-5V/3.3V buck converters against load dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rail to clamp transients before regulator input stage. Use Value: Limits peak voltage to 40.9V during 600W surges, preventing regulator latch-up or MOSFET gate oxide failure. | Use Scenario: Input-stage surge suppression in factory automation AC/DC front-ends exposed to relay switching noise. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000μs pulses on rectified bus lines. Use Value: Maintains <1.0µA leakage at 26V, avoiding standby current penalty while delivering 600W pulse handling. |
| LED Driver Modules | Telecom Power Interfaces |
Use Scenario: Overvoltage protection for constant-current LED drivers in streetlight systems subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on DC input, coordinated with upstream fuse and downstream OVP IC. Use Value: Withstands 50A 8.3ms forward surge, enabling robust operation during grid-coupled transient events. | Use Scenario: Secondary-side transient suppression on 48V telecom power distribution boards near hot-swap controllers. IC Role / Device Role / Timing Role: Fast-response clamp protecting PMBus communication lines and voltage monitoring circuits. Use Value: Sub-1ps response ensures clamping occurs before 50ns edge rates propagate into digital control ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J26A (non-HR3G) | Same electrical specs; HR3G denotes halogen-free, green compound, and tape-and-reel packaging per JESD201 Class 2 whisker test | No functional difference in circuit protection; HR3G required for RoHS/halogen-free compliance programs | Select SMA6J26AHR3G when full material declaration and lead-free assembly compatibility are mandated |
| SMBJ26A | Higher package thermal resistance (DO-214AA vs DO-214AC); same VWM/VC, but 600W rating verified at lower ambient due to larger footprint | Less suitable for dense PCB layouts; requires larger pad area and reduced trace density around device | Choose SMBJ26A only if board space allows larger SMA footprint and thermal derating is acceptable |
Compared with SMA6J26AHR3G, the base SMA6J26A lacks halogen-free certification and optimized tape-and-reel logistics, while SMBJ26A trades compactness for marginally higher thermal mass-making SMA6J26AHR3G optimal for space-constrained, compliance-driven automotive and industrial designs.
Availability
SMA6J26AHR3G is available at Aetrix Electronics and suitable for automotive ECUs, industrial SMPS, LED driver modules, and telecom power interfaces requiring stable component supply with full RoHS and halogen-free compliance.
Supply support for SMA6J26AHR3G 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, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMA6JxxA series was developed specifically for high-reliability transient suppression in automotive power nets and industrial DC rails, emphasizing low clamping ratio, ISO 7637-2 compliance, and extended temperature operation.
FAQ
What is the maximum clamping voltage of SMA6J26AHR3G at its rated peak pulse current?
The SMA6J26AHR3G has a maximum clamping voltage (VC) of 40.9 V when subjected to its rated peak pulse current of 14.7 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMA6J26AHR3G maintains this clamping performance across its full operating temperature range.
Does SMA6J26AHR3G meet automotive transient immunity standards?
Yes, the SMA6J26AHR3G meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive electronic control units and power modules. Its 600W peak pulse rating, fast sub-1ps response, and stable VBR across –55°C to +175°C ensure reliable suppression of load dump, inductive switching, and battery reversal transients. The SMA6J26AHR3G is widely deployed in 12V/24V vehicle subsystems.
What does the "HR3G" suffix indicate in SMA6J26AHR3G?
The "HR3G" suffix in SMA6J26AHR3G specifies halogen-free green compound packaging, tape-and-reel delivery (7,500 units per reel), and compliance with JESD201 Class 2 whisker testing. It also confirms RoHS compliance and J-STD-020 Level 1 moisture sensitivity-enabling direct placement without pre-baking. The SMA6J26AHR3G differs from standard SMA6J26A only in these manufacturing and environmental attributes, not electrical performance.
Can SMA6J26AHR3G be used in bidirectional signal line protection?
No, the SMA6J26AHR3G is a unidirectional TVS diode intended for DC power rail protection only. Its electrical structure supports clamping in reverse bias above VBR, but offers no symmetrical clamping for AC or bidirectional data lines. For bidirectional applications such as USB or CAN bus protection, a dedicated bidirectional TVS like SMA6J26CA must be selected instead of the SMA6J26AHR3G.
What is the steady-state power dissipation rating for SMA6J26AHR3G?
The SMA6J26AHR3G has a steady-state power dissipation (PD) rating of 4 W at TA = 25°C. This value applies to continuous DC or low-frequency reverse leakage conditions-not transient events. In practical use, the SMA6J26AHR3G spends most time in high-impedance standby mode (<1.0 µA leakage at 26 V), so actual thermal load remains negligible unless subjected to frequent repetitive surges exceeding derating limits.
SMA6J26AHR3G 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 40.9V
- Current - Peak Pulse (10/1000µs):
- 14.7A
- 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)
SMA6J26AHR3G FAQ
1.How can I place an order for SMA6J26AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J26AHR3G 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 SMA6J26AHR3G reliable?
The price and inventory of SMA6J26AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J26AHR3G is usually 5 days.
3.What payment methods are accepted for SMA6J26AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J26AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J26AHR3G?
SMA6J26AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J26AHR3G 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 SMA6J26AHR3G?
For technical support, including SMA6J26AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J26AHR3G requirements.
6.How does Aetrix verify that SMA6J26AHR3G is sourced from the original manufacturer or authorized distributors?
All SMA6J26AHR3G 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 SMA6J26AHR3G meets industry standards.
7.What is the process for return or replacement of SMA6J26AHR3G?
All SMA6J26AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J26AHR3G, 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 SMA6J26AHR3G part is unused and in its original packaging.
Return procedure for SMA6J26AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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