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Vishay General Semiconductor - Diodes Division P6SMB27AHM3/I
- Part No.:
- P6SMB27AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27AHM3/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB27AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V maximum clamping voltage (VC) at 16.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P6SMB27AHM3/I datasheet, P6SMB27AHM3/I pinout, P6SMB27AHM3/I application, or P6SMB27AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping performance under surge conditions, and direct alternatives for ESD and lightning transient suppression in 12 V/24 V systems.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable reverse breakdown behavior. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of inductive switching spikes and ESD events per IEC 61000-4-2/4-4/4-5.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, the P6SMB27AHM3/I supports reflow soldering up to 260 °C peak. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for automotive-grade power rail and CAN/LIN bus line protection where reliability under thermal cycling and humidity stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 37.5 V at 16.0 A - peak clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 µs waveform) - robust surge handling for automotive load-dump and ISO 7637-2 pulses |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing (0.2" × 0.2") |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V supply or sensor output); conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a surges without degradation in automotive 24 V systems |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
| MSL Level 1 rating | Allows unlimited floor life and single reflow at 260 °C peak - no baking required prior to assembly |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during transients, protecting 30 V-rated MOSFETs and microcontrollers |
| 100 A IFSM surge rating | Supports high-energy 8.3 ms half-sine surges common in motor drive and relay coil snubbing |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy on 5 V or 12 V sensor supply rails before it reaches precision ADC inputs. Use Value: Limits voltage excursion to ≤37.5 V during 600 W surges, preserving sensor accuracy and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers interfacing with 24 V field devices subject to inductive kickback. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between field wiring and optocoupler input stage. Use Value: Clamps 1 kV/1 Ω surge to <40 V within nanoseconds, ensuring reliable signal integrity and eliminating false triggering. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding DC-DC converter inputs in base station power supplies from lightning-induced surges on -48 V telecom distribution lines. IC Role / Device Role / Timing Role: Primary-stage TVS on input rail upstream of buck controller, absorbing repetitive 10/1000 µs transients. Use Value: Maintains 23.1 V stand-off while delivering 600 W pulse handling - compatible with IEEE C62.41 Category B/C surge immunity testing. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Snubber-connected across motor terminals or flyback diode replacement in H-bridge gate driver paths. Use Value: Withstands 100 A non-repetitive forward surge (8.3 ms), enabling compact layout without discrete freewheeling diodes. |
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 SMA package (DO-214AC); RθJA = 130 °C/W vs. 100 °C/W | Lower power density; less suitable for sustained surge duty in confined automotive spaces | Select when board space allows larger standoff or when legacy SMA footprint is fixed |
| 1.5SMC27A | Same electrical specs, but SMC (DO-214AB) package; higher thermal mass, RθJA = 85 °C/W | Better thermal performance but 30% larger footprint; not drop-in for SMB-layout designs | Prefer for industrial power supplies needing enhanced thermal margin without layout change |
Compared with SMAJ27A-E3/5B and 1.5SMC27A, the P6SMB27AHM3/I offers optimal balance of AEC-Q101 qualification, SMB footprint compatibility, and 100 °C/W thermal resistance - making it the preferred choice for new automotive and space-constrained industrial designs requiring validated reliability.
Availability
P6SMB27AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB27AHM3/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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB Series was engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - combining AEC-Q101 qualification, halogen-free construction, and optimized SMB packaging for automated SMT assembly.
FAQ
What is the clamping voltage of the P6SMB27AHM3/I under maximum rated surge current?
The P6SMB27AHM3/I exhibits a maximum clamping voltage (VC) of 37.5 V when subjected to its rated peak pulse current of 16.0 A (10/1000 µs waveform). This value is measured per standard test conditions and ensures downstream components see limited overvoltage stress during transient events. The P6SMB27AHM3/I maintains this clamping performance across its specified operating temperature range and after multiple surge cycles, provided derating guidelines are followed.
Is the P6SMB27AHM3/I qualified for automotive applications?
Yes, the P6SMB27AHM3/I is AEC-Q101 qualified - confirmed by Vishay's documentation and ordering code suffix "HM3", which denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing, validating its use in engine control units, body electronics, and ADAS sensor modules.
What does the "HM3" suffix indicate in P6SMB27AHM3/I?
The "HM3" suffix in P6SMB27AHM3/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" denotes the AEC-Q101 grade, "M" indicates halogen-free molding compound, and "3" confirms compliance with JEDEC JESD201 class 2 whisker resistance. The final "I" signifies 13-inch tape-and-reel packaging (3200 units per reel), optimized for high-volume SMT placement.
How does the P6SMB27AHM3/I compare to bidirectional TVS diodes like P6SMB27CA?
The P6SMB27AHM3/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., +24 V supply rails), offering lower leakage and sharper breakdown characteristics. In contrast, P6SMB27CA is bidirectional and suited for AC or floating signal lines (e.g., RS-485, CAN bus). The P6SMB27AHM3/I cannot replace P6SMB27CA in AC-coupled applications due to asymmetrical conduction behavior - selection must match circuit topology and voltage polarity constraints.
What PCB layout guidance applies to the P6SMB27AHM3/I for optimal thermal and surge performance?
For optimal performance, mount the P6SMB27AHM3/I on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet. Minimize trace inductance by placing it as close as possible to the protected node, and avoid routing high-current return paths near sensitive analog traces. Use internal ground planes and thermal vias beneath pads if ambient temperatures exceed 70 °C to manage junction temperature rise within the 150 °C limit.
P6SMB27AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
P6SMB27AHM3/I FAQ
1.How can I place an order for P6SMB27AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27AHM3/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 P6SMB27AHM3/I reliable?
The price and inventory of P6SMB27AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB27AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27AHM3/I?
P6SMB27AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27AHM3/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 P6SMB27AHM3/I?
For technical support, including P6SMB27AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27AHM3/I requirements.
6.How does Aetrix verify that P6SMB27AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB27AHM3/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 P6SMB27AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB27AHM3/I?
All P6SMB27AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27AHM3/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 P6SMB27AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB27AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27AHM3/I Tags
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