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Vishay General Semiconductor - Diodes Division SM6T30CAHE3_A/H
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- Part No.:
- SM6T30CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,962
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Product details
Overview
SM6T30CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 30 V standoff voltage (VWM), 33.2 V minimum breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), 57 A peak pulse current, and 53.5 V maximum clamping voltage at IPPM - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SM6T30CAHE3_A/H datasheet, SM6T30CAHE3_A/H pinout, SM6T30CAHE3_A/H application, or SM6T30CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.61), thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and robust surge handling up to 100 A IFSM (unidirectional only, not applicable here).
The device meets J-STD-020 MSL Level 1 with 260 °C reflow peak, supports RoHS compliance and halogen-free options via HM3 suffix variants, and delivers consistent clamping performance across -65 °C to +150 °C junction temperature range - critical for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - reverse stand-off voltage; defines maximum continuous operating voltage before significant leakage begins |
| VBR min | 33.2 V - minimum breakdown voltage at 1 mA test current; ensures reliable turn-on during overvoltage events |
| VC @ IPPM | 53.5 V - clamping voltage at 14.5 A (10/1000 μs); limits downstream voltage stress during surge |
| PPPM | 600 W - peak pulse power rating; supports high-energy transients like ISO 7637-2 Pulse 1/2a/5a |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance; requires PCB copper area for thermal management |
| TJ max | +150 °C - maximum junction temperature; enables operation in engine control units and powertrain modules |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional terminal pair | Interchangeable terminals; identical electrical behavior in either direction - no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands high-energy transients per ISO 7637-2 and IEC 61000-4-5 without degradation |
| AEC-Q101 qualified | Validated for automotive applications including powertrain, body electronics, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR) | ~1.61 - minimizes voltage overshoot during clamping, reducing risk to protected ICs |
| MSL Level 1 | Compatible with standard lead-free reflow profiles up to 260 °C peak, eliminating moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting transient voltage to ≤53.5 V while surviving repeated 600 W pulses - validated per AEC-Q101 stress tests. | Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field wiring surges and ground loop transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed across each I/O line and common reference to absorb ±1 kV EFT and 2 kV ESD events. Use Value: Enables >100,000 surge cycles without parameter shift due to glass-passivated junction and low inductance SMB layout. |
| Consumer Device USB Port Protection | Telecom Line Interface Protection |
Use Scenario: Securing USB 2.0 data lines (D+/D−) in automotive infotainment head units against hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into USB connector footprint to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Achieves <0.5 pF typical junction capacitance (per Fig. 4 at VWM) - preserves signal rise time and eye diagram integrity. | Use Scenario: Protecting RS-485/RS-232 transceiver pins in base station backhaul equipment exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression stage mounted at board edge before signal conditioning and isolation stages. Use Value: Clamps 10/1000 μs surges to ≤53.5 V with 14.5 A peak current handling - compatible with telecom-grade surge immunity standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V), lower PPPM (400 W), higher VC (53.3 V), SMA package (larger RθJA) | Limited to lower-energy transients; less suitable for automotive load dump | Prefer SM6T30CAHE3_A/H when 600 W rating and AEC-Q101 qualification are mandatory |
| 1.5KE30CA | Higher VWM (30 V), same bidirectionality, but through-hole DO-201 package; 1500 W PPPM but slower response | Not SMT-compatible; unsuitable for high-density automotive PCBs | Choose SM6T30CAHE3_A/H for automated assembly, space-constrained layouts, and MSL-compliant reflow |
Compared with SMAJ30CA and 1.5KE30CA, SM6T30CAHE3_A/H provides superior surge robustness in compact SMT form factor with automotive-grade reliability - delivering 50% higher peak power than SMAJ30CA and enabling PCB area savings over 1.5KE30CA's axial leaded footprint.
Availability
SM6T30CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, consumer USB port hardening, and telecom line interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for SM6T30CAHE3_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, MOSFETs, and protection devices with emphasis on reliability and application-specific validation.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, low clamping voltage, and repeatable surge endurance are essential.
FAQ
What does the "CA" suffix indicate in SM6T30CAHE3_A/H?
The "CA" suffix in SM6T30CAHE3_A/H denotes a bidirectional configuration - meaning the device clamps voltage transients equally in both polarities. This eliminates polarity orientation concerns during PCB layout and makes it ideal for protecting AC-coupled signals, differential buses (e.g., CAN, RS-485), and ungrounded sensor interfaces. Unlike unidirectional variants (e.g., SM6T30A), SM6T30CAHE3_A/H has no cathode marking and exhibits identical VBR and VC characteristics in forward and reverse directions.
Is SM6T30CAHE3_A/H qualified for automotive use?
Yes, SM6T30CAHE3_A/H is AEC-Q101 qualified - explicitly confirmed in Vishay's ordering code definition where "HE3" indicates RoHS-compliant and AEC-Q101 qualified grade. This qualification covers stress tests including high-temperature operating life, temperature cycling, and surge robustness, making SM6T30CAHE3_A/H suitable for engine control units, body control modules, and ADAS sensor front-ends per automotive OEM requirements.
What is the clamping voltage of SM6T30CAHE3_A/H at rated peak pulse current?
The maximum clamping voltage (VC) of SM6T30CAHE3_A/H is 53.5 V at 14.5 A peak pulse current (IPPM), measured using a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table on page 2 of Vishay document 88385 and represents the upper limit of voltage seen by protected circuitry during a full-rated surge event - critical for ensuring downstream ICs remain within absolute maximum ratings.
Does SM6T30CAHE3_A/H require special PCB layout considerations?
Yes - SM6T30CAHE3_A/H must be mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the "Maximum Ratings" note. This pad area ensures adequate heat dissipation during surge events and maintains the rated 600 W peak pulse power. Smaller pads increase thermal resistance and reduce effective surge capability, potentially leading to premature failure under repeated transients.
How does the SMB (DO-214AA) package of SM6T30CAHE3_A/H compare to SMA in surge handling?
The SMB package of SM6T30CAHE3_A/H offers lower thermal resistance (RθJL = 20 °C/W) and higher surge robustness than SMA-packaged equivalents like SMAJ30CA, due to larger copper connection area and optimized leadframe design. While both are SMT, SMB's larger body improves power dissipation during 10/1000 μs pulses - enabling SM6T30CAHE3_A/H to sustain 600 W versus SMAJ30CA's 400 W rating - without increasing board footprint significantly.
SM6T30CAHE3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SM6T30CAHE3_A/H FAQ
1.How can I place an order for SM6T30CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHE3_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 SM6T30CAHE3_A/H reliable?
The price and inventory of SM6T30CAHE3_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 SM6T30CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T30CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHE3_A/H?
SM6T30CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHE3_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 SM6T30CAHE3_A/H?
For technical support, including SM6T30CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHE3_A/H requirements.
6.How does Aetrix verify that SM6T30CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHE3_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 SM6T30CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T30CAHE3_A/H?
All SM6T30CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHE3_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 SM6T30CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T30CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHE3_A/H Tags
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