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Vishay General Semiconductor - Diodes Division SM6T15CA-E3/52
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- Part No.:
- SM6T15CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15CA-E3/52.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,801
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Product details
Overview
SM6T15CA-E3/52 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 15 V standoff voltage (VWM), 21.2 V maximum clamping voltage at 28 A peak pulse current (10/1000 μs), 600 W peak pulse power rating, and operates across -65 °C to +150 °C junction temperature range. It protects MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the SM6T15CA-E3/52 datasheet, SM6T15CA-E3/52 pinout, SM6T15CA-E3/52 application, or SM6T15CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, 10/1000 μs waveform compliance, RoHS-compliant matte tin terminals, AEC-Q101 qualification eligibility, and SMB footprint compatibility with automated SMT placement.
Technical Context
The SM6T15CA-E3/52 implements a silicon avalanche junction structure optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Clamping performance is characterized under standardized 10/1000 μs double-exponential pulses with derating above 25 °C ambient per Fig. 2; thermal resistance is 100 °C/W junction-to-ambient (typical) on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 14.3 V / 15.8 V - Breakdown voltage range at 1 mA test current, defining turn-on threshold consistency |
| VC @ IPPM | 21.2 V at 28 A - Clamped voltage during 600 W transient, limiting downstream stress |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform, critical for IEC 61000-4-5 compliance |
| TJ max. | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" body length and 0.060" terminal width |
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 |
|---|---|---|
| Cathode (marked end) | Not applicable | Bidirectional device has no polarity marking; both terminals function identically as symmetrical avalanche junctions |
| Anode (unmarked end) | Not applicable | Same as cathode - terminals are interchangeable; no anode/cathode designation in CA-suffix devices |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV surge) on 50 Ω source impedance lines |
| Glass passivated chip junction | Ensures stable breakdown characteristics and long-term reliability under repeated transient stress |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time), preserving clamping integrity |
| AEC-Q101 qualification option | Supports automotive-grade sourcing via HE3/HM3 suffix variants with full stress-test validation |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door actuator drivers from load dump and inductive switching spikes in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional TVS placed across LIN signal pair and supply rail to clamp ±30 V transients within 1 ns. Use Value: Prevents latch-up or permanent damage to transceivers by limiting voltage to ≤21.2 V during 28 A surges. | Use Scenario: Safeguarding 4–20 mA current loop inputs in PLC analog input modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Symmetrical clamping element across loop terminals to absorb bidirectional energy without polarity bias. Use Value: Maintains loop accuracy by limiting common-mode overvoltage to <22 V while supporting >100 kV/μs dv/dt immunity. |
| Consumer Audio Equipment | Telecom Line Card Protection |
Use Scenario: Shielding headphone jack and USB-C audio interface circuits from ESD events during user plugging/unplugging. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential audio paths to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Preserves signal fidelity with <10 pF junction capacitance while clamping ESD pulses below IC damage thresholds. | Use Scenario: Front-end protection of xDSL line drivers against lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary clamping stage before gas discharge tube (GDT) secondary protection in hybrid protection schemes. Use Value: Absorbs initial 600 W surge energy to prevent GDT follow-on current, extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | 400 W PPPM rating, SMA package (smaller thermal mass), higher RθJA (140 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 3 in high-temperature enclosures | Select SMAJ15CA only when board space is constrained and peak surge energy remains ≤400 W |
| SMCJ15CA | 1500 W PPPM rating, SMC package (larger footprint), lower clamping voltage (21.0 V at 38.3 A) | Overqualified for cost-sensitive consumer designs; requires larger PCB area and higher assembly cost | Choose SMCJ15CA when protecting high-power industrial motor drives subject to repetitive 1 kA surges |
Compared with SMAJ15CA and SMCJ15CA, the SM6T15CA-E3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and AEC-Q101 upgrade path-making it ideal for mid-tier automotive and industrial applications where thermal margin and layout efficiency are jointly critical.
Availability
SM6T15CA-E3/52 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer audio equipment, and telecom line card protection requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SM6T15CA-E3/52 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 and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 qualification readiness are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T15CA-E3/52?
The "CA" suffix denotes a bidirectional configuration: the SM6T15CA-E3/52 provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional "A" variants, it has no cathode marking and functions identically across both terminals-enabling use in AC signal paths, differential buses, and floating grounds where polarity reversal is possible.
Is SM6T15CA-E3/52 RoHS-compliant and lead-free?
Yes, SM6T15CA-E3/52 is RoHS-compliant and lead-free. The "E3" suffix confirms compliance with EU RoHS Directive 2011/65/EU, and its matte tin-plated terminals meet J-STD-002 and JESD 22-B102 solderability standards. It also passes JESD 201 Class 2 whisker testing, ensuring long-term interconnect reliability in thermal cycling environments.
What is the maximum clamping voltage of SM6T15CA-E3/52 under standard test conditions?
The maximum clamping voltage (VC) of SM6T15CA-E3/52 is 21.2 V when subjected to a 10/1000 μs waveform at 28 A peak pulse current (IPPM). This value is measured per Figure 1 in Vishay document 88385 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SM6T15CA-E3/52 be used in automotive applications?
Yes, SM6T15CA-E3/52 supports automotive use through qualification-ready variants: ordering codes ending in "HE3" or "HM3" denote AEC-Q101 qualified versions. While the base SM6T15CA-E3/52 is commercial grade, its SMB package, 150 °C TJ max, and low-inductance design align with automotive environmental requirements-enabling drop-in qualification upgrade paths.
How does SM6T15CA-E3/52 differ from SM6T15A-E3/52?
The SM6T15CA-E3/52 is bidirectional, whereas SM6T15A-E3/52 is unidirectional. This means SM6T15CA-E3/52 clamps transients of either polarity symmetrically and lacks a polarity band, while SM6T15A-E3/52 has a cathode band and conducts forward current only in one direction. Their VWM (12.8 V), VBR (14.3–15.8 V), and VC (21.2 V) are identical, but circuit integration differs fundamentally.
SM6T15CA-E3/52 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T15CA-E3/52 FAQ
1.How can I place an order for SM6T15CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15CA-E3/52 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 SM6T15CA-E3/52 reliable?
The price and inventory of SM6T15CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T15CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15CA-E3/52?
SM6T15CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15CA-E3/52 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 SM6T15CA-E3/52?
For technical support, including SM6T15CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15CA-E3/52 requirements.
6.How does Aetrix verify that SM6T15CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T15CA-E3/52 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 SM6T15CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T15CA-E3/52?
All SM6T15CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15CA-E3/52, 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 SM6T15CA-E3/52 part is unused and in its original packaging.
Return procedure for SM6T15CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T15CA-E3/52 Tags
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