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Vishay General Semiconductor - Diodes Division SM6T30AHE3_B/H
- Part No.:
- SM6T30AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30AHE3_B/H.pdf
- Description:
- 600W,30V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,120
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Product details
Overview
SM6T30AHE3_B/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 mA), 25.6 V stand-off voltage (VWM), 41.5 V maximum clamping voltage (VC) at 14.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect automotive sensor interfaces, industrial I/O ports, and DC power rails.
For engineers reviewing the SM6T30AHE3_B/H datasheet, SM6T30AHE3_B/H pinout, SM6T30AHE3_B/H application, or SM6T30AHE3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.37), 1.0 μA max reverse leakage at VWM, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
The SM6T30AHE3_B/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at 25.6 V), while its low-inductance SMB package supports fast transient response under 10/1000 μs surge conditions.
Thermally, it exhibits RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation up to TJ = +150 °C. It is rated for 100 A non-repetitive forward surge (10 ms half-sine) and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise clamping onset window for overvoltage protection |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 41.5 V at 14.5 A (10/1000 μs) - actual worst-case clamped voltage seen by protected circuit |
| PPPM | 600 W - peak surge power handling capability under standardized lightning/surge test waveform |
| IR @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity and battery life in always-on systems |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.2 mm height and 5.59 mm length |
Pinout & Package
SMB (DO-214AA) package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability and JESD 22-B102 whisker testing (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail or CAN_H); band denotes this end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
| Low clamping ratio (VC/VBR) | ~1.37 - minimizes overvoltage stress on downstream ICs during transient events |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤41.5 V, preventing damage to 3.3 V or 5 V ADC front-end while maintaining <1.0 μA leakage at 25.6 V operating bias. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input line and common rail to shunt inductive kickback from solenoid coils. Use Value: Absorbs 600 W surges without failure, preserving channel integrity across 100,000+ switching cycles per IEC 61000-4-4 compliance testing. |
| DC Power Rail Protection | Automotive Body Control Module |
Use Scenario: Secondary overvoltage protection on 12 V/24 V supply rails feeding infotainment head units and telematics gateways. IC Role / Device Role / Timing Role: Parallel-connected TVS providing last-line defense after primary DC-DC converter OVP and fuse. Use Value: Clamps load-dump transients (SAE J1113-11) to safe levels within nanoseconds, avoiding brownout or latch-up in downstream PMICs. | Use Scenario: ESD and surge protection for LIN bus transceivers and door module switches in vehicle body electronics. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS on LIN data line and power pins. Use Value: Meets ISO 10605 ESD (±30 kV air, ±25 kV contact) and ISO 7637-3 pulse requirements while supporting automated SMT assembly. |
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 | Same VWM (25.6 V) and VC (41.5 V), but 400 W PPPM and SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W margin is required | Select SM6T30AHE3_B/H when AEC-Q101 qualification, 600 W rating, or SMB thermal performance is mandatory |
| 1.5SMC30A | Same VBR range and PPPM = 1500 W, but larger SMC (DO-214AB) package and higher VC = 48.4 V | Better energy handling but higher clamping voltage increases risk to 3.3 V/5 V logic; requires more PCB area | Choose SM6T30AHE3_B/H for space-constrained designs needing tight clamping and automotive qualification |
Compared with SMAJ30A and 1.5SMC30A, SM6T30AHE3_B/H delivers optimal balance of AEC-Q101 compliance, 600 W surge capacity, low 41.5 V clamping, and compact SMB footprint - making it preferred for automotive and high-reliability industrial edge nodes where board space and qualification rigor are critical.
Availability
SM6T30AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and DC power rail protection requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production batches.
Supply support for SM6T30AHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SM6T Series is engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where high-energy surges, thermal cycling, and long-term parametric stability are mission-critical.
FAQ
What is the exact breakdown voltage range for SM6T30AHE3_B/H?
The SM6T30AHE3_B/H has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1.0 mA test current, per Vishay's datasheet revision 09-Jan-2024 (Doc. #88385). This ±5% tolerance ensures predictable clamping behavior in overvoltage events and aligns with standard 30 V nominal TVS classification. The SM6T30AHE3_B/H maintains this specification across its full operating temperature range.
Is SM6T30AHE3_B/H qualified for automotive use?
Yes, SM6T30AHE3_B/H is AEC-Q101 qualified, as confirmed by its "HE3" suffix and explicit note in the Vishay datasheet. It is rated for operation from −65 °C to +150 °C junction temperature and validated for automotive applications including engine control units, body electronics, and sensor interface protection. The SM6T30AHE3_B/H meets MSL Level 1 and passes JESD 201 Class 2 whisker testing.
What does the "_B/H" suffix mean in SM6T30AHE3_B/H?
The "_B/H" suffix in SM6T30AHE3_B/H indicates packaging configuration: "B" denotes tape-and-reel revision code (e.g., manufacturing lot or process revision), and "H" specifies the preferred package code for 7" diameter plastic tape and reel with 750 units per reel. This ordering code ensures traceability, RoHS compliance, and compatibility with high-speed SMT pick-and-place equipment.
How does SM6T30AHE3_B/H compare to bidirectional TVS diodes like SM6T30CA?
SM6T30AHE3_B/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply to ground), offering lower leakage and tighter VBR tolerance. In contrast, SM6T30CA is bidirectional and suited for AC or differential signal lines (e.g., RS-485, CAN). The SM6T30AHE3_B/H cannot replace SM6T30CA in symmetrical surge environments without circuit redesign.
What is the maximum clamping voltage of SM6T30AHE3_B/H under surge conditions?
The SM6T30AHE3_B/H has a maximum clamping voltage (VC) of 41.5 V at 14.5 A peak pulse current with a 10/1000 μs waveform, per the Vishay datasheet. This value represents the worst-case voltage imposed on the protected circuit during standardized surge testing and is critical for ensuring downstream ICs remain within absolute maximum ratings. The SM6T30AHE3_B/H achieves this with a clamping ratio of approximately 1.37.
SM6T30AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T30AHE3_B/H FAQ
1.How can I place an order for SM6T30AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30AHE3_B/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_B/H reliable?
The price and inventory of SM6T30AHE3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SM6T30AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30AHE3_B/H?
SM6T30AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30AHE3_B/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_B/H?
For technical support, including SM6T30AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30AHE3_B/H requirements.
6.How does Aetrix verify that SM6T30AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T30AHE3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SM6T30AHE3_B/H?
All SM6T30AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30AHE3_B/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_B/H part is unused and in its original packaging.
Return procedure for SM6T30AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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