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Vishay General Semiconductor - Diodes Division SM6T27AHE3_B/I
- Part No.:
- SM6T27AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27AHE3_B/I.pdf
- Description:
- 600W,27V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,515
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Product details
Overview
SM6T27AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, with 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), and 37.5 V clamping voltage (VC) at 16 A peak pulse current. It delivers 600 W peak pulse power (10/1000 μs), supports automotive-grade AEC-Q101 qualification, and protects MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the SM6T27AHE3_B/I datasheet, SM6T27AHE3_B/I pinout, SM6T27AHE3_B/I application, or SM6T27AHE3_B/I equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, low-inductance SMB package, and compliance with J-STD-020 MSL Level 1 reflow profile.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds VWM = 23.1 V and limiting downstream voltage to ≤37.5 V at 16 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Designed for high-reliability automotive applications, SM6T27AHE3_B/I meets AEC-Q101 stress testing requirements and features matte tin-plated leads compliant with JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise conduction onset for overvoltage protection |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage rises |
| VC @ IPPM | 37.5 V at 16 A (10/1000 μs) - clamped voltage seen by protected IC during surge |
| PPPM | 600 W - peak transient energy absorption capability under standardized waveform |
| TJ max | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm body length and 2.20 mm height |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end; terminals designed for 0.2" × 0.2" copper pad layout per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or low-voltage rail; completes clamping path during transients |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., sensor supply or CAN bus); band-marked end accepts positive surge |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems |
| Glass passivated junction | Ensures stable VBR tolerance and low long-term parameter drift under thermal cycling |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without moisture sensitivity concerns |
| AEC-Q101 qualified (HE3 suffix) | Validates reliability for automotive control modules requiring zero-defect field performance |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream silicon while maintaining fast response |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and inductive switching spikes in door module PCBs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between LIN line and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits transient voltage to 37.5 V, preventing damage to 5 V tolerant transceivers and ensuring >100,000-cycle reliability per AEC-Q100. | Use Scenario: Safeguarding analog output lines (4–20 mA) of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-mode protector on sensor output rail, absorbing ESD and relay-coil flyback energy without affecting DC accuracy. Use Value: Maintains <1 μA leakage at 23.1 V, preserving loop accuracy while surviving 8 kV contact ESD per IEC 61000-4-2. |
| Automotive Infotainment Power Rail | Telecom Base Station DC Feeds |
Use Scenario: Clamping 12 V supply rail feeding USB-C PD controllers and display drivers in head unit designs. IC Role / Device Role / Timing Role: Primary overvoltage suppressor upstream of LDO regulators, activated during battery reversal or jump-start events. Use Value: Withstands 100 A IFSM surge (10 ms half-sine), enabling compatibility with ISO 16750-2 Test 4.7 (reverse battery). | Use Scenario: Protecting -48 V DC distribution lines feeding remote radio units in 5G macro base stations. IC Role / Device Role / Timing Role: Reverse-polarity TVS on telecom power feed, clamping negative transients induced by lightning-induced ground potential rise. Use Value: Delivers 600 W pulse handling at -48 V system level, meeting Telcordia GR-1089-CORE Section 4.5.2.2 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A-E3/5B | Same VBR range (25.7–28.4 V), but 400 W PPPM; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost or board space is critical and automotive qualification is unnecessary |
| 1.5SMC27A | Same electrical specs, but larger SMC (DO-214AB) package; higher thermal mass and RθJL = 15 °C/W | Better sustained power handling but incompatible with dense automotive layouts | Choose for industrial power supplies where PCB real estate allows and lead-to-lead inductance is less critical |
Compared with SMAJ27A-E3/5B and 1.5SMC27A, SM6T27AHE3_B/I uniquely balances 600 W surge capacity, AEC-Q101 compliance, and SMB footprint-making it optimal for space-constrained, high-reliability automotive signal line protection.
Availability
SM6T27AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power distribution systems requiring stable component supply across extended production lifecycles.
Supply support for SM6T27AHE3_B/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 protection devices with emphasis on reliability and automotive-grade validation.
The SM6T Series is engineered specifically for high-speed transient suppression in harsh environments, targeting automotive infotainment, body electronics, and industrial control systems where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of SM6T27AHE3_B/I at its rated peak pulse current?
The SM6T27AHE3_B/I has a maximum clamping voltage (VC) of 37.5 V when subjected to a 10/1000 μs waveform at 16 A peak pulse current (IPPM). This value is measured per Figure 1 in Vishay document 88385 and reflects worst-case voltage seen by protected circuitry during standardized surge events. The SM6T27AHE3_B/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is SM6T27AHE3_B/I suitable for automotive applications?
Yes, SM6T27AHE3_B/I is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM6T series datasheet (Rev. 09-Jan-2024, Doc. #88385). It undergoes stress testing including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. The SM6T27AHE3_B/I is explicitly recommended for automotive body control modules, infotainment systems, and sensor interfaces requiring certified reliability.
What does the "_B/I" suffix mean in SM6T27AHE3_B/I?
The "_B/I" suffix in SM6T27AHE3_B/I indicates packaging configuration: "B" denotes revision code B per Vishay's ordering nomenclature, and "I" specifies 13-inch diameter plastic tape and reel delivery containing 3200 units. This matches the preferred package code "I" listed in the Ordering Information table on page 2 of document 88385. The SM6T27AHE3_B/I is RoHS-compliant and AEC-Q101 qualified.
How does SM6T27AHE3_B/I differ from bidirectional variants like SM6T27CA?
SM6T27AHE3_B/I is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, SM6T27CA is bidirectional, symmetrical in both directions, and used for AC or differential signal lines like RS-485 or CAN. Electrical parameters (VBR, VC, PPPM) are identical, but SM6T27AHE3_B/I cannot replace SM6T27CA in AC-coupled applications without circuit redesign.
What is the thermal resistance of SM6T27AHE3_B/I from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SM6T27AHE3_B/I is 100 °C/W, measured on a standard 0.2" × 0.2" copper pad per JEDEC guidelines. This value assumes no additional heatsinking and defines the temperature rise above ambient under steady-state 5.0 W power dissipation. For pulsed operation, transient thermal impedance must be evaluated using Figure 5 in Vishay document 88385. The SM6T27AHE3_B/I relies on PCB copper area for thermal management during surge events.
SM6T27AHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T27AHE3_B/I FAQ
1.How can I place an order for SM6T27AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27AHE3_B/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 SM6T27AHE3_B/I reliable?
The price and inventory of SM6T27AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T27AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T27AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27AHE3_B/I?
SM6T27AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27AHE3_B/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 SM6T27AHE3_B/I?
For technical support, including SM6T27AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27AHE3_B/I requirements.
6.How does Aetrix verify that SM6T27AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T27AHE3_B/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 SM6T27AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T27AHE3_B/I?
All SM6T27AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27AHE3_B/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 SM6T27AHE3_B/I part is unused and in its original packaging.
Return procedure for SM6T27AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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