My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T30CAHE3_A/I
;;2.jpg)
- Part No.:
- SM6T30CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHE3_A/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,221
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T30CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V standoff voltage (VWM), 33.2 V minimum breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and 150 °C maximum junction temperature - deployed to protect automotive sensor signal lines, industrial I/O ports, and power supply rails against ESD and inductive switching transients.
For engineers reviewing the SM6T30CAHE3_A/I datasheet, SM6T30CAHE3_A/I pinout, SM6T30CAHE3_A/I application, or SM6T30CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping voltage (VC = 48.3 V at IPPM), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM), while the low-inductance SMB package supports fast response to sub-nanosecond transients.
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C), is qualified to AEC-Q101 for automotive use, and achieves thermal resistance RθJA = 100 °C/W on 0.2" × 0.2" copper pads - enabling reliable operation in high-temperature engine bay or industrial control environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min) | 33.2 V - guaranteed breakdown starts no lower than this, ensuring margin above VWM |
| VC @ IPPM | 48.3 V - clamping voltage at 16 A peak pulse current (10/1000 μs), limiting protected circuit stress |
| PPPM | 600 W - peak transient energy absorption capacity under standardized surge waveform |
| TJ max. | +150 °C - enables deployment in under-hood automotive or high-ambient industrial locations |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with IPC-7351B standard pad layout |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Anode/Cathode (bidirectional) | No polarity marking - terminals are functionally identical; symmetrical conduction in both directions |
| Opposite End | Anode/Cathode (bidirectional) | Identical terminal role; bidirectional operation eliminates need for orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| MSL Level 1 rating | Allows single-reflow assembly without baking; compatible with standard SMT reflow profiles up to 260 °C |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors |
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 ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADCs during ISO 10605 ±30 kV contact discharge events. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across 24 V DC input terminals to limit voltage excursions during inductive turn-off. Use Value: Maintains signal integrity by clamping transients to ≤48.3 V, well below the 60 V absolute maximum rating of typical optocoupler input stages. |
| Power Supply Rail Clamping | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression on 24 V or 48 V DC power distribution networks in industrial gateways. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after DC/DC converter output to absorb coupling from adjacent switching circuits. Use Value: Limits rail overshoot to 48.3 V during 10/1000 μs surges, preventing false triggering or reset of downstream PMICs and supervisors. | Use Scenario: Front-end protection for Ethernet PHY interfaces or RS-485 transceivers in outdoor telecom equipment. IC Role / Device Role / Timing Role: Bidirectional clamp on differential pairs to suppress common-mode lightning-induced surges per IEC 61000-4-5 Level 3. Use Value: Symmetric clamping ensures equal protection on both signal lines without introducing DC bias or skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V), lower PPPM (400 W), SMA package (larger RθJA = 140 °C/W) | Lower power handling limits use to less severe transients; less suitable for automotive load dump | Select when cost sensitivity outweighs peak surge margin and board space allows larger SMA footprint |
| 1.5KE30CA | Higher PPPM (1500 W), axial DO-201 package, non-SMT, higher parasitic inductance | Requires through-hole assembly; unsuitable for high-density or automated production | Choose only for legacy through-hole designs where rework to SMT is impractical |
Compared with SMAJ30CA and 1.5KE30CA, SM6T30CAHE3_A/I delivers optimal balance of AEC-Q101 qualification, 600 W surge capability, SMB footprint, and low-profile SMT compatibility - making it the preferred choice for new automotive and industrial designs requiring production scalability and thermal robustness.
Availability
SM6T30CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SM6T30CAHE3_A/I 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is designed specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through proven, qualified components.
FAQ
What does the "CA" suffix indicate in SM6T30CAHE3_A/I?
The "CA" suffix in SM6T30CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T30A), SM6T30CAHE3_A/I has no cathode marking and functions identically regardless of polarity applied across its terminals, making it ideal for AC-coupled or differential signal lines.
Is SM6T30CAHE3_A/I qualified for automotive applications?
Yes, SM6T30CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024 (Document Number: 88385). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating its suitability for engine control units, ADAS sensors, and body electronics in passenger vehicles and commercial vehicles.
What is the clamping voltage of SM6T30CAHE3_A/I at rated peak pulse current?
The clamping voltage (VC) of SM6T30CAHE3_A/I is 48.3 V when subjected to its rated peak pulse current (IPPM) of 16 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet and represents the maximum voltage seen by protected circuitry during a worst-case transient event.
Does SM6T30CAHE3_A/I require orientation during PCB placement?
No, SM6T30CAHE3_A/I does not require orientation during PCB placement because it is a bidirectional TVS diode with no polarity marking. Both terminals are functionally identical - the device clamps equally for positive or negative transients - eliminating risk of misplacement and simplifying automated assembly on high-volume production lines.
What is the thermal resistance of SM6T30CAHE3_A/I in standard mounting conditions?
SM6T30CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay SM6T Series datasheet. This value assumes no additional heatsinking and defines the steady-state temperature rise under continuous 5.0 W power dissipation at TA = 50 °C.
SM6T30CAHE3_A/I 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/I FAQ
1.How can I place an order for SM6T30CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHE3_A/I 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/I reliable?
The price and inventory of SM6T30CAHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SM6T30CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHE3_A/I?
SM6T30CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHE3_A/I 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/I?
For technical support, including SM6T30CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHE3_A/I requirements.
6.How does Aetrix verify that SM6T30CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SM6T30CAHE3_A/I?
All SM6T30CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SM6T30CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHE3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
