My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6S14HE3/2D
- Part No.:
- SM6S14HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S14HE3/2D.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,994
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6S14HE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for automotive load dump protection in high-reliability 12 V systems. It features a 14.0 V stand-off voltage (VWM), 15.6–19.1 V breakdown range (VBR), 25.8 V clamping voltage at 178 A peak pulse current, 4600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the SM6S14HE3/2D datasheet, SM6S14HE3/2D pinout, SM6S14HE3/2D application, or SM6S14HE3/2D equivalent, this page delivers verified electrical parameters, DO-218AB package details, thermal resistance (RθJC = 0.95 °C/W), junction temperature rating (TJ = –55 to +175 °C), and automotive-grade surge compliance per ISO7637-2.
Technical Context
This TVS diode operates as a unidirectional clamping device with anode-connected heatsink configuration, enabling robust reverse-biased transient suppression in DC power rails. Its passivated anisotropic rectifier structure ensures low leakage (<10 μA at VWM) and low forward voltage drop (≤1.9 V at 100 A), critical for minimizing conduction losses during surge events.
The device sustains 600 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and delivers 4600 W peak pulse power under standardized 10/1000 μs waveform - validated for load dump transients up to 175 °C junction temperature, meeting MSL Level 1 reflow requirements (245 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14.0 V - Maximum continuous reverse operating voltage before clamping begins; sets system overvoltage trip threshold for 12 V automotive rails. |
| VBR (min/max) | 15.6 V / 19.1 V - Breakdown voltage range at 5 mA test current; defines onset of avalanche conduction under transient stress. |
| VC @ IPPM | 25.8 V - Clamping voltage at 178 A peak pulse current; limits downstream IC voltage exposure during ISO7637-2 load dump events. |
| PPPM (10/1000 μs) | 4600 W - Peak pulse power handling capability; enables single-event suppression of high-energy automotive transients without failure. |
| RθJC | 0.95 °C/W - Junction-to-case thermal resistance; supports direct heatsink mounting for sustained power dissipation in high-temperature environments. |
| TJ max. | +175 °C - Maximum junction temperature rating; qualified per AEC-Q101 for under-hood placement without derating penalties. |
| IFSM | 600 A - Non-repetitive forward surge current (8.3 ms); withstands repeated motor commutation or alternator switching surges. |
Pinout & Package
Package: DO-218AB - Surface-mount, anode-heatsink configuration with matte tin-plated leads; UL 94 V-0 molding compound; MSL Level 1 compliant (245 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connected to protected line (e.g., battery rail); must be routed to heatsink for thermal management and surge current path. |
| Lead 2 / Metal Heatsink | Cathode | Connected to ground reference; provides low-inductance return path and primary thermal interface to PCB copper pour or external heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive under-hood use, including temperature cycling, humidity bias, and mechanical shock testing. |
| Junction passivation technology | Reduces surface leakage and improves long-term stability under high-temperature bias conditions (TJ = 175 °C). |
| ISO7637-2 compliance | Meets automotive load dump surge immunity requirements (Pulse 5a/b) when mounted with proper PCB thermal design. |
| Low VF (≤1.9 V @ 100 A) | Minimizes forward conduction loss during high-current transients, reducing localized heating and improving system efficiency. |
| MSL Level 1 rating | Enables standard SMT reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Power Rail |
|---|---|
Use Scenario: Suppresses 12 V battery line transients caused by alternator load dump (up to 40 V, 400 ms duration) in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery input and DC/DC converter input stage. Use Value: Limits voltage seen by downstream regulators to ≤25.8 V, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Protects microcontroller power inputs in engine control modules exposed to ignition coil switching noise and starter motor cranking dips. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on main 5 V or 3.3 V supply rail upstream of LDOs. Use Value: Maintains stable supply during 100 ms, 25 V transients without requiring additional filtering or hold-up capacitance. |
| Body Control Module (BCM) Power Input | Advanced Driver Assistance Systems (ADAS) Camera Power |
Use Scenario: Guards BCM 12 V input against relay coil flyback and window motor inductive kick in door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary transient suppressor on fused battery feed prior to main power distribution IC. Use Value: Withstands ≥150 A pulses at 25.8 V clamping, enabling compact layout without series impedance or RC snubbers. |
Use Scenario: Shields 12 V camera module power input from ESD and load dump in rear-view and surround-view systems. IC Role / Device Role / Timing Role: Front-line protection device mounted directly at connector entry point on rigid-flex PCB. Use Value: Provides <10 ns response time and <10 μA leakage at 14 V, preserving low-noise analog video signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/5AT | Lower PPPM (400 W vs. 4600 W); SMA package (smaller footprint, higher RθJA); VC = 23.2 V @ 17.3 A. | Not suitable for load dump; limited to ESD and low-energy transients in infotainment or sensor interfaces. | Select only for space-constrained non-automotive applications where surge energy is <10% of SM6S14HE3/2D capability. |
| 1.5KE15A | Through-hole TO-204AA package; higher VC (24.4 V @ 123 A); same VWM/VBR range; no AEC-Q101 qualification. | Lacks automotive qualification and MSL rating; requires wave soldering; unsuitable for automated SMT production. | Use only for legacy board redesigns where DO-218AB footprint change is prohibited and AEC-Q101 is not mandated. |
Compared with SMAJ14A-E3/5AT and 1.5KE15A, SM6S14HE3/2D uniquely combines AEC-Q101 qualification, 4600 W surge rating, DO-218AB thermal performance (RθJC = 0.95 °C/W), and SMT compatibility - making it the only option for new automotive power rail designs requiring ISO7637-2 compliance and high-temperature operation.
Availability
SM6S14HE3/2D is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) power rail hardening, and body control module (BCM) input surge suppression requiring stable component supply across multi-year vehicle production cycles.
Supply support for SM6S14HE3/2D 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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SM6Sxx family is engineered specifically for automotive-grade transient suppression, emphasizing high-temperature stability (TJ = 175 °C), ISO7637-2 compliance, and robust packaging for under-hood deployment.
FAQ
What is the clamping voltage of SM6S14HE3/2D at its rated peak pulse current?
The SM6S14HE3/2D has a maximum clamping voltage (VC) of 25.8 V at 178 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured and guaranteed per the Vishay datasheet (Document Number: 88384, Rev. 22-Jul-16). The clamping behavior ensures downstream components see no more than 25.8 V during worst-case transients, making SM6S14HE3/2D suitable for protecting 24 V-tolerant ICs in 12 V automotive systems.
Is SM6S14HE3/2D qualified for automotive applications?
Yes, SM6S14HE3/2D is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO7637-2 load dump surge requirements and is rated for operation from –55 °C to +175 °C junction temperature. The HE3 suffix confirms RoHS compliance and JESD201 Class 2 whisker resistance. These qualifications are documented in the official Vishay datasheet for SM6S14HE3/2D and apply to the full SM6S10–SM6S36A family.
What package type does SM6S14HE3/2D use, and what are its thermal characteristics?
SM6S14HE3/2D uses the DO-218AB surface-mount package with anode-heatsink configuration. Its thermal resistance from junction to case (RθJC) is 0.95 °C/W, enabling efficient heat transfer to a PCB copper pour or external heatsink. The package is MSL Level 1 compliant (peak reflow = 245 °C) and features UL 94 V-0 flammability-rated molding compound - all confirmed in the Vishay SM6S14HE3/2D datasheet revision 22-Jul-16.
How does SM6S14HE3/2D differ from the 'A' version (e.g., SM6S14AHE3/2D)?
SM6S14HE3/2D has a wider breakdown voltage range (15.6–19.1 V) versus SM6S14AHE3/2D (15.6–17.2 V), resulting in higher VC (25.8 V vs. 23.2 V) and lower IPPM (178 A vs. 198 A) at the same test condition. The 'A' variant offers tighter VBR tolerance (±5 %) and is preferred where precise clamping onset is required; SM6S14HE3/2D provides higher surge margin in less tightly regulated systems. Both share identical package, ratings, and qualifications.
Can SM6S14HE3/2D be used in bidirectional configurations?
No, SM6S14HE3/2D is strictly unidirectional - its polarity is fixed with the heatsink terminal as cathode and lead 1 as anode. Bidirectional operation would require two devices in series opposition or a dedicated bidirectional TVS like SMBJ14CA. Attempting reverse-bias operation on SM6S14HE3/2D exceeds its rated reverse standoff voltage and risks catastrophic failure. This unidirectional nature is clearly specified in the Vishay SM6S14HE3/2D datasheet under "Polarity: heatsink is anode" (note: correction - heatsink is cathode; per mechanical drawing and polarity note, Lead 2/heatsink = cathode).
SM6S14HE3/2D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 178A
- Power - Peak Pulse:
- 4600W (4.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM6S14HE3/2D FAQ
1.How can I place an order for SM6S14HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S14HE3/2D 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 SM6S14HE3/2D reliable?
The price and inventory of SM6S14HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S14HE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S14HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S14HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S14HE3/2D?
SM6S14HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S14HE3/2D 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 SM6S14HE3/2D?
For technical support, including SM6S14HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S14HE3/2D requirements.
6.How does Aetrix verify that SM6S14HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S14HE3/2D 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 SM6S14HE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S14HE3/2D?
All SM6S14HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S14HE3/2D, 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 SM6S14HE3/2D part is unused and in its original packaging.
Return procedure for SM6S14HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S14HE3/2D 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 …
