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Vishay General Semiconductor - Diodes Division SM6T150AHE3/52
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- Part No.:
- SM6T150AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150AHE3/52.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,318
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Product details
Overview
SM6T150AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 150 V standoff voltage (VWM), 207 V clamping voltage at 2.9 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive-grade power rails and sensor interfaces.
For engineers reviewing the SM6T150AHE3/52 datasheet, SM6T150AHE3/52 pinout, SM6T150AHE3/52 application, or SM6T150AHE3/52 equivalent, key selection criteria include its AEC-Q101 qualification, low clamping ratio (1.38×VWM), 150 °C max junction temperature, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology to achieve fast response (<1 ns) to transients and stable breakdown behavior under repetitive surge stress. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation up to 150 °C junction temperature when mounted per recommended 0.2" × 0.2" copper pads.
The SM6T150AHE3/52 delivers 600 W peak pulse power handling with a 10/1000 μs waveform and exhibits ≤1.0 μA reverse leakage at 128 V (VWM), ensuring minimal standby power loss in high-impedance protection circuits. Its bidirectional counterpart would use the "CA" suffix (e.g., SM6T150CA), but this part is strictly unidirectional.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 143 V / 158 V at 1.0 mA - guaranteed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - clamping voltage limiting downstream circuit stress during surge |
| PPPM | 600 W - peak transient energy absorption capability without failure |
| TJ max | +150 °C - enables deployment in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.2 mm height and 3.94 mm length |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional clamp configuration | Connected to ground or low-impedance return path; forms current loop with cathode during transient |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 12 V rail); conducts surge current toward ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/3a surges and IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, inductive switching) |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply lines in engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input, conducting surge current to chassis ground. Use Value: Limits voltage to ≤207 V during 2.9 A transient, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding analog output lines of pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) TVS connected across signal and ground to suppress ESD and cable discharge events. Use Value: Maintains signal integrity with <1.0 μA reverse leakage at 128 V, avoiding DC offset errors in precision measurement paths. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Shielding PoE-powered equipment inputs from lightning-induced surges on outdoor Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input, coordinated with secondary GDT or MOV for staged clamping. Use Value: 600 W rating handles multi-kA induced surges while 150 °C TJ rating supports operation in sealed enclosures. | Use Scenario: Adding robustness to USB-C VBUS lines in portable speakers or docking stations exposed to user-handling ESD. IC Role / Device Role / Timing Role: Fast-response (sub-ns) unidirectional clamp between VBUS and ground, placed upstream of USB PD controller. Use Value: Clamps 8 kV contact ESD to <207 V within nanoseconds, preserving USB enumeration and power negotiation functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/52 | Same VWM (128 V) and VC (207 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Less suitable for high-energy automotive load dump; better for space-constrained consumer PCBs | Select SMAJ150A-E3/52 only if board area is critical and surge energy is limited to ≤400 W |
| SMCJ150A-E3/52 | Same VWM and VC, but higher PPPM (1500 W); larger SMC package with lower RθJA (35 °C/W) | Overqualified for most 600 W requirements; requires larger PCB area and higher cost | Choose SMCJ150A-E3/52 only when system-level testing demands >1000 W margin or extended thermal derating is needed |
Compared with SMAJ150A-E3/52 and SMCJ150A-E3/52, the SM6T150AHE3/52 delivers optimal balance of 600 W surge capacity, AEC-Q101 qualification, and SMB footprint-making it the preferred choice for automotive and industrial designs requiring validated reliability without over-engineering.
Availability
SM6T150AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB-C devices requiring stable component supply and long-term lifecycle support.
Supply support for SM6T150AHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SM6T Series is designed specifically for high-reliability transient suppression in automotive, industrial, and communications systems-emphasizing AEC-Q101 compliance, low clamping ratio, and robust surge handling in compact SMB packages.
FAQ
What is the clamping voltage of the SM6T150AHE3/52 under standard test conditions?
The SM6T150AHE3/52 has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at 2.9 A peak pulse current. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for protected circuits. The clamping ratio (VC/VWM = 207/128 ≈ 1.62) reflects strong suppression performance relative to its 128 V standoff rating. Designers should reference Fig. 1 and Fig. 2 in the Vishay datasheet 88385 for derating curves at elevated temperatures.
Is the SM6T150AHE3/52 qualified for automotive applications?
Yes, the SM6T150AHE3/52 is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's SM6T series datasheet (Rev. 09-Jan-2024, Doc. #88385). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making the SM6T150AHE3/52 suitable for under-hood and cabin electronics. Its 150 °C maximum junction temperature and robust surge rating align with automotive power rail protection requirements.
What does the "HE3" suffix indicate in SM6T150AHE3/52?
The "HE3" suffix in SM6T150AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes this automotive-grade variant from commercial versions (e.g., "E3") and halogen-free variants (e.g., "HM3"). The "HE3" designation confirms that the SM6T150AHE3/52 meets both environmental compliance and automotive reliability requirements out-of-the-box.
How does the SMB (DO-214AA) package of the SM6T150AHE3/52 compare to SMA or SMC alternatives?
The SMB package of the SM6T150AHE3/52 offers a balanced trade-off: smaller than SMC (lower cost, less board area) but higher power handling than SMA (600 W vs. 400 W). With RθJA = 100 °C/W and RθJL = 20 °C/W, it supports adequate thermal dissipation when mounted per Vishay's recommended 0.2" × 0.2" copper pads. Unlike SMA, the SMB footprint allows higher surge ratings without sacrificing SMT process compatibility-making the SM6T150AHE3/52 ideal for mid-power automotive and industrial protection.
Can the SM6T150AHE3/52 be used in bidirectional configurations?
No, the SM6T150AHE3/52 is strictly unidirectional, as indicated by its "A" suffix and cathode-band marking. Bidirectional operation requires the "CA" suffix (e.g., SM6T150CA), which uses symmetrical breakdown characteristics in both polarities. Using the SM6T150AHE3/52 in reverse-biased configurations will not provide clamping-its anode must connect to ground and cathode to the protected line. For AC or dual-polarity signal lines, select the CA variant instead of the SM6T150AHE3/52.
SM6T150AHE3/52 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- 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)
SM6T150AHE3/52 FAQ
1.How can I place an order for SM6T150AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150AHE3/52 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 SM6T150AHE3/52 reliable?
The price and inventory of SM6T150AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150AHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T150AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150AHE3/52?
SM6T150AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150AHE3/52 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 SM6T150AHE3/52?
For technical support, including SM6T150AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150AHE3/52 requirements.
6.How does Aetrix verify that SM6T150AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T150AHE3/52 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 SM6T150AHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T150AHE3/52?
All SM6T150AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150AHE3/52, 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 SM6T150AHE3/52 part is unused and in its original packaging.
Return procedure for SM6T150AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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