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Vishay General Semiconductor - Diodes Division SM6T30CAHE3/52
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- Part No.:
- SM6T30CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHE3/52.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,142
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Product details
Overview
SM6T30CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use - protecting MOSFETs and sensor interfaces in engine control units.
For engineers reviewing the SM6T30CAHE3/52 datasheet, SM6T30CAHE3/52 pinout, SM6T30CAHE3/52 application, or SM6T30CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage (VC = 48.3 V at IPPM), RoHS-compliant AEC-Q101 qualification, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
The SM6T30CAHE3/52 operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 μA at VWM), while low inductance supports fast response to ESD and load-switching spikes.
Rated for 150 °C maximum junction temperature and MSL Level 1 (260 °C reflow), it delivers 600 W peak pulse power under standardized 10/1000 μs waveform conditions. Thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W define its power derating profile above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min) | 33.3 V - Minimum breakdown voltage at 1 mA test current; guarantees clamping activation above system nominal voltage. |
| VC @ IPPM | 48.3 V - Clamping voltage at peak pulse current (12.3 A); determines maximum voltage stress imposed on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling (10/1000 μs); enables robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount package with 0.220" × 0.130" footprint; optimized for high-density PCB layouts and automated assembly. |
Pinout & Package
SMB (DO-214AA) package with two terminals: symmetrical bidirectional construction means no anode/cathode marking; both ends electrically identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Input / Output Node | Either terminal accepts bidirectional surge energy; connects directly across protected line (e.g., CAN_H/CAN_L or sensor supply/return). |
| Terminal 2 | Transient Input / Output Node | Electrically identical to Terminal 1; no polarity sensitivity - simplifies routing and eliminates orientation errors during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ECUs, ADAS sensors, and body control modules. |
| 600 W peak pulse power | Withstands repetitive 10/1000 μs transients up to 600 W without degradation - meets ISO 7637-2 Pulse 5a requirements for 12 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure during clamping - critical for safeguarding 3.3 V or 5 V logic interfaces connected to protected lines. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow soldering without moisture-related damage - eliminates pre-bake requirement in high-volume manufacturing. |
| Glass passivated junction | Ensures stable VBR over time and temperature; reduces parameter drift and leakage increase under long-term bias stress. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground pins to shunt transients before reaching ASIC front-end. Use Value: Limits voltage excursion to ≤48.3 V during 100 V/50 ms load dump events - preserving sensor accuracy and preventing latch-up in downstream ADC drivers. |
Use Scenario: Guarding differential CAN_H/CAN_L lines in factory automation gateways exposed to motor drive noise and relay switching. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common ground, absorbing common-mode and differential surges. Use Value: Maintains CAN signal integrity by clamping transients within ±48.3 V window - ensuring bit error rate remains below 10⁻¹² per ISO 11898-2. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Input-stage protection for USB-C PD adapters subjected to AC line surges and hot-plug transients. IC Role / Device Role / Timing Role: Bidirectional clamp between primary-side DC bus rails (e.g., bulk cap input) to suppress ringing and cross-conduction spikes. Use Value: Absorbs 600 W pulses without thermal runaway - extends capacitor lifetime and avoids false OVP triggering in controller ICs. |
Use Scenario: Front-end protection for Ethernet PHYs and DSL line drivers in central office equipment facing lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on tip/ring pairs, referenced to chassis ground, diverting 8/20 μs surges away from transformer windings. Use Value: Achieves 53.5 V clamping at 8/20 μs (11.1 A), meeting GR-1089-CORE Level 4 telecom surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Same SMB package, but lower PPPM (400 W), higher VC (53.3 V at IPPM), and no AEC-Q101 qualification. | Limited to commercial-grade consumer/industrial applications; not approved for automotive under-hood deployment. | Select SMAJ33CA only when cost sensitivity outweighs automotive compliance and higher clamping voltage is acceptable. |
| 1.5KE33CA | Through-hole DO-201 package, 1500 W PPPM, but larger footprint, higher inductance, and no MSL rating. | Suitable for prototyping or low-volume power supplies where board space and reflow compatibility are secondary concerns. | Choose 1.5KE33CA for legacy designs requiring through-hole mounting or higher single-pulse energy absorption - not for new SMT automotive designs. |
Compared with SMAJ33CA and 1.5KE33CA, SM6T30CAHE3/52 offers superior automotive qualification, tighter clamping (48.3 V vs. 53.3 V), and optimized SMT manufacturability - making it the preferred choice for volume automotive electronics requiring AEC-Q101 compliance and space-constrained layouts.
Availability
SM6T30CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom line cards, and consumer power adapter inputs requiring stable component supply, AEC-Q101 traceability, and consistent SMB package form factor.
Supply support for SM6T30CAHE3/52 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, power efficiency, and automotive-grade validation.
The SM6T Series is engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ESD, load dump, and lightning surges is mission-critical.
FAQ
What is the clamping voltage of SM6T30CAHE3/52 at its rated peak pulse current?
The SM6T30CAHE3/52 has a maximum clamping voltage (VC) of 48.3 V when subjected to its peak pulse current (IPPM) of 12.3 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88385 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM6T30CAHE3/52 suitable for automotive applications?
Yes, SM6T30CAHE3/52 is AEC-Q101 qualified and carries the HE3 suffix indicating automotive-grade qualification. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness - making it appropriate for engine control units, ADAS sensors, and body electronics where reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix indicate in SM6T30CAHE3/52?
The "CA" suffix in SM6T30CAHE3/52 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T30A), it has no polarity marking and functions identically regardless of voltage polarity applied across its terminals.
What is the standoff voltage (VWM) rating for SM6T30CAHE3/52?
The standoff voltage (VWM) for SM6T30CAHE3/52 is 30 V - the maximum DC or RMS voltage that can be continuously applied without triggering clamping action. This rating ensures compatibility with 24 V automotive systems and 3.3 V/5 V logic interfaces when used with appropriate series impedance.
Does SM6T30CAHE3/52 require special PCB layout considerations?
Yes, SM6T30CAHE3/52 should be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power dissipation. Short, direct traces to protected nodes and low-inductance grounding are essential to preserve its fast clamping response and avoid voltage overshoot during transient events.
SM6T30CAHE3/52 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:
- -
- 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)
SM6T30CAHE3/52 FAQ
1.How can I place an order for SM6T30CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHE3/52 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 SM6T30CAHE3/52 reliable?
The price and inventory of SM6T30CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T30CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHE3/52?
SM6T30CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHE3/52 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 SM6T30CAHE3/52?
For technical support, including SM6T30CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHE3/52 requirements.
6.How does Aetrix verify that SM6T30CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHE3/52 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 SM6T30CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T30CAHE3/52?
All SM6T30CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHE3/52, 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 SM6T30CAHE3/52 part is unused and in its original packaging.
Return procedure for SM6T30CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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