My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM15T6V8CA-E3/57T
- Part No.:
- SM15T6V8CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8CA-E3/57T.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM15T6V8CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 6.8 V breakdown voltage (VBR min), 5.8 V stand-off voltage (VWM), and clamping voltage of 10.5 V at 143 A peak pulse current. It protects signal lines in automotive sensor units against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T6V8CA-E3/57T datasheet, SM15T6V8CA-E3/57T pinout, SM15T6V8CA-E3/57T application, or SM15T6V8CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.55), AEC-Q101 qualification eligibility, and compatibility with high-impedance transient sources in I/O protection circuits.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR (6.45–7.14 V), VWM (5.8 V), and ID (1000 µA max) in either direction. Its low dynamic impedance enables rapid response to sub-microsecond transients while maintaining stable clamping under 10/1000 μs surge conditions.
The device uses a glass-passivated silicon junction and is mounted on 8.0 mm × 8.0 mm copper pads per terminal, achieving RθJA = 75 °C/W and RθJL = 15 °C/W. It meets MSL Level 1 (260 °C peak reflow) and supports automated SMT placement without derating concerns below 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single lightning-surge events without degradation when source impedance limits current within rating |
| Breakdown Voltage VBR | 6.45–7.14 V at 10 mA - defines precise conduction onset threshold for bidirectional overvoltage clamping |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 1000 µA; sets operating margin below VBR |
| Clamping Voltage VC | 10.5 V at 143 A - actual voltage seen by protected circuit during worst-case 10/1000 μs surge; clamping ratio = 1.55 |
| Junction Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive environments and industrial control enclosures |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for thermal dissipation and board space efficiency |
Pinout & Package
SM15T6V8CA-E3/57T is a two-terminal bidirectional TVS diode in SMC (DO-214AB) package. No polarity marking is present on the case; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Interchangeable connection point; forms symmetrical clamping path regardless of voltage polarity applied |
| Terminal 2 | Anode/Cathode (bidirectional) | Interchangeable connection point; completes bidirectional transient shunt path across protected line and ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions eliminates need for polarity-aware layout or orientation checks |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on high-impedance lines without failure; short-circuit failure mode ensures system-level fault containment |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontroller I/O pins during transient events |
| MSL Level 1 moisture sensitivity | Enables direct placement into standard SMT reflow profiles (peak 260 °C) without baking or special handling requirements |
| AEC-Q101 qualification path | Base part number supports HE3/HM3 variants for automotive applications; E3 suffix indicates RoHS-compliant commercial-grade version |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules from load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground to limit transient excursions to ≤10.5 V. Use Value: Prevents latch-up or gate oxide damage in connected microcontrollers and ASICs during 100 V/µs transients induced by solenoid actuation. |
Use Scenario: Safeguarding RS-485 transceiver data lines in PLC backplanes exposed to relay-coil flyback and ESD events. IC Role / Device Role / Timing Role: Low-inductance shunt element that activates within <1 ns to clamp surges before they propagate into receiver input stages. Use Value: Maintains signal integrity by limiting differential-mode overvoltage to <12 V while supporting >500 kbps data rates without capacitive loading penalty. |
| Consumer USB Port Protection | Telecom DSL Line Protection |
|
Use Scenario: Secondary-level surge suppression on USB 2.0 D+/D− lines in set-top boxes subjected to AC mains coupling and human-body ESD. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp positioned after common-mode choke to handle differential-mode transients. Use Value: Limits peak differential voltage to 10.5 V, well below USB PHY absolute maximum ratings (−0.5 V to 4.0 V), preventing permanent interface damage. |
Use Scenario: Primary protection on POTS/DSL line cards against lightning-induced surges entering via telephone wiring. IC Role / Device Role / Timing Role: First-stage shunt device absorbing up to 1500 W of surge energy before secondary GDT or MOV stages activate. Use Value: Reduces let-through voltage to downstream hybrid transformers and line drivers, enabling compliance with ITU-T K.20 and GR-1089-CORE standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Lower peak power (400 W), same VBR range, SMA package (smaller thermal mass) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD and local switching noise | Select SMAJ6.8CA only when board space is constrained and surge threat level is ≤1 kV (IEC 61000-4-2 Contact) |
| 1.5KE6.8CA | Higher peak power (1500 W), axial-leaded DO-201 package, higher parasitic inductance (~30 nH vs. ~15 nH) | Requires through-hole assembly; less suitable for high-speed data lines due to slower effective response from lead inductance | Choose 1.5KE6.8CA for cost-sensitive industrial panels where SMT is unavailable and layout allows larger footprint |
Compared with SMAJ6.8CA and 1.5KE6.8CA, SM15T6V8CA-E3/57T delivers identical clamping performance in a thermally superior SMC package with lower inductance and full SMT compatibility-making it optimal for automotive and high-reliability industrial designs requiring repeatable surge immunity.
Availability
SM15T6V8CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line-card protection requiring stable component supply, consistent AEC-Q101 traceability path, and long-term production continuity.
Supply support for SM15T6V8CA-E3/57T 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 handling, and automotive-grade qualification.
The SM15T Series was developed specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where 1500 W surge immunity and bidirectional symmetry are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SM15T6V8CA-E3/57T?
The "CA" suffix denotes a bidirectional configuration: SM15T6V8CA-E3/57T provides symmetrical clamping in both voltage polarities, unlike unidirectional variants (e.g., SM15T6V8A). This eliminates polarity dependency during PCB layout and enables use on AC-coupled or differential signal lines without orientation constraints. The device has no cathode band marking, confirming its bidirectional nature.
Is SM15T6V8CA-E3/57T qualified to AEC-Q101?
SM15T6V8CA-E3/57T itself is the commercial-grade RoHS-compliant variant (E3 suffix); however, the base SM15T6V8CA product family supports AEC-Q101 qualification via HE3/HM3 ordering codes. For automotive applications requiring certified qualification, specify SM15T6V8CAHE3_A/H or SM15T6V8CAHM3_A/H-these carry full AEC-Q101 test reports and traceability.
What is the maximum clamping voltage of SM15T6V8CA-E3/57T under surge conditions?
The maximum clamping voltage (VC) of SM15T6V8CA-E3/57T is 10.5 V when subjected to a 10/1000 μs waveform at IPPM = 143 A. This value is measured per Figure 1 in Vishay document 88380 and represents the peak voltage imposed on the protected circuit during worst-case standardized surge testing.
Can SM15T6V8CA-E3/57T be used in place of a unidirectional TVS like SM15T6V8A?
No-SM15T6V8CA-E3/57T is strictly bidirectional and cannot replace unidirectional SM15T6V8A in DC-biased applications requiring forward conduction or polarity-specific leakage behavior. Substitution would compromise protection on positively biased lines and may cause unintended conduction during normal operation. Always match device polarity type to circuit topology.
What is the thermal resistance of SM15T6V8CA-E3/57T, and how does it affect layout?
SM15T6V8CA-E3/57T has RθJA = 75 °C/W (typical) when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain junction temperature ≤150 °C under 6.5 W steady-state dissipation, ensure minimum pad area per terminal matches the recommended layout. Reducing pad size increases thermal resistance and risks premature thermal runaway during repetitive surges.
SM15T6V8CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SM15T6V8CA-E3/57T FAQ
1.How can I place an order for SM15T6V8CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8CA-E3/57T 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 SM15T6V8CA-E3/57T reliable?
The price and inventory of SM15T6V8CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T6V8CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8CA-E3/57T?
SM15T6V8CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8CA-E3/57T 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 SM15T6V8CA-E3/57T?
For technical support, including SM15T6V8CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8CA-E3/57T requirements.
6.How does Aetrix verify that SM15T6V8CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T6V8CA-E3/57T 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 SM15T6V8CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T6V8CA-E3/57T?
All SM15T6V8CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8CA-E3/57T, 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 SM15T6V8CA-E3/57T part is unused and in its original packaging.
Return procedure for SM15T6V8CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T6V8CA-E3/57T 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 …
