My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T27CAHM3_A/I
- Part No.:
- SM6T27CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27CAHM3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,689
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T27CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 600 W peak pulse power (10/1000 μs), and clamping voltage of 37.5 V at 16.0 A. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SM6T27CAHM3_A/I datasheet, SM6T27CAHM3_A/I pinout, SM6T27CAHM3_A/I application, or SM6T27CAHM3_A/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (VC/VBR ≈ 1.42), and SMB thermal resistance (RθJA = 100 °C/W).
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical VBR, VWM = 23.1 V, and ID ≤ 1.0 μA at stand-off voltage. Its glass-passivated junction ensures stable leakage and robust surge handling under repetitive transients.
Designed for surface-mount automated placement, it meets MSL Level 1 (260 °C peak reflow) and delivers 600 W pulse power with low inductance and clamping response time < 1 ns - critical for protecting fast-switching MOSFET gates and CAN/LIN bus receivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines precise clamping onset threshold in both directions |
| VWM | 23.1 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 37.5 V at 16.0 A (10/1000 μs) - actual worst-case voltage seen by protected circuit during surge |
| PPPM | 600 W - peak transient energy absorption capability without failure |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.59 mm × 4.06 mm footprint |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking. Cathode/anode designation does not apply - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient current input/output node | Connected to line under protection; carries full surge current bidirectionally |
| Terminal 2 | Transient current input/output node | Connected to reference plane (GND or rail); completes low-inductance clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges |
| Halogen-free & RoHS-compliant | Meets automotive ELV Directive and IPC-1752A material declaration requirements |
| Low clamping ratio (VC/VBR) | 1.42 - minimizes overvoltage stress on downstream ICs during transient events |
| MSL Level 1 rating | Supports standard Pb-free reflow profiles up to 260 °C without popcorn or delamination |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and microcontroller ADC inputs in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V MCUs while maintaining signal integrity below 23.1 V DC operating range. | Use Scenario: Safeguarding differential CAN H/L lines in factory automation PLCs subject to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (< 100 pF typical) TVS mounted across bus pair to clamp common-mode surges without distorting 1 Mbps data edges. Use Value: Maintains bus eye diagram integrity and avoids false dominant/recessive state errors during 4 kV EFT testing per IEC 61000-4-4. |
| Consumer Power Adapter Input | Telecom DSL Line Interface |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters where 24 V auxiliary rails may experience flyback spikes. IC Role / Device Role / Timing Role: Fast-response clamp between VOUT and GND, triggered within nanoseconds to limit overshoot during regulation loop instability. Use Value: Limits output excursion to ≤37.5 V during 100 ns–1 μs spikes, preventing damage to connected Type-C controller ICs. | Use Scenario: Primary protection for ADSL/VDSL line drivers interfacing twisted-pair copper lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage surge diverter placed before hybrid transformer and line driver amplifier to absorb >90% of 10/1000 μs energy. Use Value: Enables compliance with GR-1089-CORE Level 3 (400 V/100 A) telecom surge immunity without derating amplifier SOA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28CA | Same VBR range (26.6–29.4 V), lower PPPM = 400 W, SMA package (larger RθJA = 140 °C/W) | Less suitable for high-repetition-rate transients in automotive under-hood locations due to thermal limitation | Select when cost sensitivity outweighs power density and AEC-Q101 requirement |
| 1.5KE27CA | Higher PPPM = 1500 W, axial DO-201 package, non-SMD, no AEC-Q101 qualification | Requires through-hole assembly and board real estate; unsuitable for automated SMT lines or space-constrained modules | Select only for legacy through-hole designs or prototyping where manual assembly is acceptable |
Compared with SMAJ28CA and 1.5KE27CA, SM6T27CAHM3_A/I offers superior power density (600 W in SMB), AEC-Q101 validation for automotive use, and halogen-free compliance - making it optimal for volume SMT production of safety-critical embedded systems.
Availability
SM6T27CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and telecom line interface circuits requiring stable component supply with guaranteed long-term manufacturability and automotive-grade traceability.
Supply support for SM6T27CAHM3_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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low clamping voltage, and SMT compatibility are mandatory.
FAQ
What is the exact breakdown voltage range for SM6T27CAHM3_A/I?
The SM6T27CAHM3_A/I has a specified breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1.0 mA test current, measured in both directions due to its bidirectional construction. This range is confirmed in the Vishay SM6T datasheet (Doc. #88385, Rev. 09-Jan-2024) and applies directly to the SM6T27CAHM3_A/I variant with HM3 suffix indicating halogen-free, RoHS-compliant, and AEC-Q101-qualified construction.
Is SM6T27CAHM3_A/I suitable for automotive applications?
Yes, SM6T27CAHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified). It meets stress test requirements for temperature cycling, humidity bias, and mechanical shock, and is referenced in Vishay's ordering table for automotive-grade variants - making SM6T27CAHM3_A/I appropriate for engine control units, body electronics, and ADAS sensor interfaces.
What is the clamping voltage of SM6T27CAHM3_A/I at rated peak pulse current?
The SM6T27CAHM3_A/I clamps to a maximum of 37.5 V at 16.0 A peak pulse current (10/1000 μs waveform), as specified in the Electrical Characteristics table of the official Vishay datasheet. This value represents the worst-case voltage imposed on protected circuitry during standardized surge events and is measured across both terminals under bidirectional conduction conditions.
Does SM6T27CAHM3_A/I have polarity markings on the package?
No, SM6T27CAHM3_A/I has no polarity markings because it is a bidirectional TVS diode. Unlike unidirectional types (which feature a cathode band), the SMB package of SM6T27CAHM3_A/I is symmetric - both terminals perform identically regardless of voltage polarity - eliminating orientation constraints during PCB layout and automated placement.
What is the thermal resistance of SM6T27CAHM3_A/I from junction to ambient?
The SM6T27CAHM3_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 stated in the Thermal Characteristics section of the Vishay SM6T datasheet. This value assumes standard SMB pad layout and is critical for calculating safe operating temperature rise under sustained power dissipation.
SM6T27CAHM3_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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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 (SMB)
SM6T27CAHM3_A/I FAQ
1.How can I place an order for SM6T27CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27CAHM3_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 SM6T27CAHM3_A/I reliable?
The price and inventory of SM6T27CAHM3_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 SM6T27CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T27CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27CAHM3_A/I?
SM6T27CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27CAHM3_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 SM6T27CAHM3_A/I?
For technical support, including SM6T27CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27CAHM3_A/I requirements.
6.How does Aetrix verify that SM6T27CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T27CAHM3_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 SM6T27CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T27CAHM3_A/I?
All SM6T27CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27CAHM3_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 SM6T27CAHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T27CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T27CAHM3_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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
