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Vishay General Semiconductor - Diodes Division SM6T30AHE3_A/H
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- Part No.:
- SM6T30AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30AHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,112
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Product details
Overview
SM6T30AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 41.5 V maximum clamping voltage (VC) at 14.5 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T30AHE3_A/H datasheet, SM6T30AHE3_A/H pinout, SM6T30AHE3_A/H application, or SM6T30AHE3_A/H equivalent, key selection considerations include its unidirectional polarity, 25.6 V stand-off voltage, 1.0 μA max reverse leakage at VWM, 100 °C/W junction-to-ambient thermal resistance, and RoHS-compliant, halogen-free construction with matte tin-plated leads.
Technical Context
The SM6T30AHE3_A/H operates as a unidirectional clamping device with glass-passivated junction, optimized for fast response to ESD and surge events. Its low-inductance SMB package supports high-speed transient suppression while meeting J-STD-020 MSL Level 1 and AEC-Q101 reliability requirements.
It delivers precise voltage limiting across automotive and industrial environments, with thermal derating above 25 °C per Fig. 2 and validated clamping performance under 10/1000 μs and 8/20 μs waveforms. The cathode-band marking enables unambiguous PCB orientation during automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines reliable conduction onset under surge conditions |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 41.5 V at 14.5 A (10/1000 μs) - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient power handling capability without failure |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance indicating need for minimum 0.2" × 0.2" copper pads for rated power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in clamping configuration | Provides return path for surge current during transient event; must be routed with low-inductance trace to minimize VL = L·di/dt overshoot |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 24 V rail or sensor output) | Acts as clamping node - voltage at this terminal is limited to ≤41.5 V during 14.5 A surge, protecting downstream ICs or MOSFETs |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR and low parameter drift over temperature and lifetime, critical for automotive-grade reliability |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge protection without degradation when mounted per recommended pad layout |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving clamping fidelity |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture-related delamination or popcorn effect |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in vehicle ECUs against load dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and DC/DC input or linear regulator. Use Value: Limits transient voltage to ≤41.5 V, preventing damage to downstream PMICs and microcontrollers while maintaining AEC-Q101 compliance. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors in factory automation systems exposed to relay coil flyback. IC Role / Device Role / Timing Role: Standoff-clamp TVS on sensor output line, referenced to system ground. Use Value: Clamps 1 kV/500 A surges (10/1000 μs) to safe levels within 1 ns, preserving signal integrity and avoiding ADC saturation or latch-up. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-level surge protection on VBUS line of USB-C ports in laptops and docking stations. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and GND, coordinated with primary ESD array. Use Value: Handles 600 W pulses without thermal runaway, complementing low-capacitance ESD diodes to meet IEC 61000-4-5 requirements. | Use Scenario: Front-end transient suppression on 48 V phantom power lines in VoIP gateways and PBX systems. IC Role / Device Role / Timing Role: High-energy clamping element on PSE-side power delivery path. Use Value: Withstands repeated 10/1000 μs surges up to 14.5 A, ensuring long-term reliability in telecom infrastructure with minimal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/5B | Same SMB package, 30 V VBR, but lower PPPM = 400 W and no AEC-Q101 qualification | Rated for commercial/industrial use only; not validated for automotive temperature cycling or humidity testing | Select SMAJ30A-E3/5B only for cost-sensitive non-automotive designs where 400 W surge margin suffices |
| SMCJ30A-QH | Higher PPPM = 1500 W, SMC (DO-214AB) package, AEC-Q101 qualified, but 2.5× larger footprint | Used where higher energy absorption is required (e.g., alternator load dump), but requires PCB area increase and layout revision | Choose SMCJ30A-QH when system-level surge tests exceed 600 W; accept larger size for enhanced ruggedness |
Compared with SMAJ30A-E3/5B, SM6T30AHE3_A/H provides 50 % higher surge power rating and automotive qualification; versus SMCJ30A-QH, it offers identical AEC-Q101 compliance in a 40 % smaller SMB footprint, trading absolute energy capacity for space-constrained placements.
Availability
SM6T30AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, consumer USB power protection, and telecom line card designs requiring stable component supply, AEC-Q101 validation, and RoHS/halogen-free compliance.
Supply support for SM6T30AHE3_A/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM6T Series was engineered for high-reliability transient suppression in space-constrained, high-volume surface-mount applications - particularly automotive subsystems and industrial controls demanding AEC-Q101 validation and consistent clamping behavior.
FAQ
What is the breakdown voltage tolerance for SM6T30AHE3_A/H?
The SM6T30AHE3_A/H has a specified breakdown voltage range of 28.5 V to 31.5 V at 1.0 mA test current, corresponding to ±10 % tolerance around the nominal 30 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, supporting robust design margins in automotive and industrial applications where SM6T30AHE3_A/H is deployed.
Is SM6T30AHE3_A/H suitable for bidirectional transient protection?
No, SM6T30AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SM6T30CA). Using SM6T30AHE3_A/H in bidirectional configurations risks forward conduction during negative transients, potentially damaging the device or failing to protect the circuit - always verify polarity alignment per SM6T30AHE3_A/H's unidirectional specification.
Does SM6T30AHE3_A/H require derating at elevated ambient temperatures?
Yes, SM6T30AHE3_A/H must be derated above TA = 25 °C per Figure 2 in the datasheet. Its peak pulse power capability decreases linearly with junction temperature, reaching ~50 % of 600 W at TJ ≈ 100 °C. Designers must calculate actual TJ using RθJA = 100 °C/W and ensure thermal pad layout meets the 0.2" × 0.2" copper requirement to maintain SM6T30AHE3_A/H performance under sustained high-temp operation.
What is the maximum reverse leakage current for SM6T30AHE3_A/H at rated VWM?
The maximum reverse leakage current for SM6T30AHE3_A/H is 1.0 μA at its stand-off voltage VWM = 25.6 V and TA = 25 °C. This ultra-low leakage preserves signal integrity and minimizes standby power loss in precision analog or low-power sensor circuits where SM6T30AHE3_A/H is applied - critical for battery-operated automotive modules and industrial IoT nodes.
How does the AEC-Q101 qualification impact SM6T30AHE3_A/H usage in automotive designs?
The AEC-Q101 qualification confirms SM6T30AHE3_A/H has passed accelerated stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating its suitability for automotive powertrain, chassis, and body electronics. This certification eliminates need for additional qualification testing by Tier 1 suppliers, accelerating time-to-market for designs relying on SM6T30AHE3_A/H in vehicles.
SM6T30AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T30AHE3_A/H FAQ
1.How can I place an order for SM6T30AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30AHE3_A/H 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 SM6T30AHE3_A/H reliable?
The price and inventory of SM6T30AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T30AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30AHE3_A/H?
SM6T30AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30AHE3_A/H 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 SM6T30AHE3_A/H?
For technical support, including SM6T30AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30AHE3_A/H requirements.
6.How does Aetrix verify that SM6T30AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T30AHE3_A/H 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 SM6T30AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T30AHE3_A/H?
All SM6T30AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30AHE3_A/H, 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 SM6T30AHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T30AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30AHE3_A/H Tags
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