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Vishay General Semiconductor - Diodes Division P6SMB27AHM3_B/I
- Part No.:
- P6SMB27AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27AHM3_B/I.pdf
- Description:
- 600W,27V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,758
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Product details
Overview
P6SMB27AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 23.1 V stand-off voltage (VWM), 25.7–28.4 V breakdown voltage (VBR) at 1 mA, 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 - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB27AHM3_B/I datasheet, P6SMB27AHM3_B/I pinout, P6SMB27AHM3_B/I application, or P6SMB27AHM3_B/I equivalent, this device is selected for robust ESD and surge protection where AEC-Q101 qualification, low incremental surge resistance, and fast response time (<1 ns) are required in space-constrained PCB layouts.
Technical Context
The P6SMB27AHM3_B/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (25.7–28.4 V), with cathode band marking polarity. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive transient stress.
It delivers 37.5 V clamping at 16.0 A (10/1000 μs), exhibits ≤1.0 μA reverse leakage at VWM, and maintains thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads - enabling use in ambient temperatures up to +150 °C junction max.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 25.7–28.4 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 37.5 V at 16.0 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 1/2a/5a in automotive systems. |
| IPPM | 16.0 A - Peak pulse current capacity under standardized 10/1000 μs waveform; determines minimum trace width and layout robustness. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by molded band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt energy to ground. |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path; completes clamping current loop. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports high-energy surges without degradation - suitable for load-dump and inductive switching protection. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics per stress test requirements - enables use in ADAS, body control, and infotainment modules. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during clamping - reduces risk of latch-up or gate oxide damage in protected MOSFETs/ICs. |
| Fast response time (<1 ns) | Engages before transient reaches damaging amplitude - critical for protecting high-speed digital interfaces and microcontrollers. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in vehicle ECUs against ISO 7637-2 load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp surges above 37.5 V. Use Value: Prevents damage to upstream regulators and downstream microcontrollers during 12 V/24 V system faults. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to suppress ESD (IEC 61000-4-2) and cable discharge events. Use Value: Maintains signal integrity and prevents false readings or sensor lockup caused by sub-100 ns transients. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier outputs against lightning-induced surges on mains-connected devices. IC Role / Device Role / Timing Role: Standoff-rated TVS across bulk capacitor to limit voltage spikes during brownout recovery or grid switching. Use Value: Extends capacitor lifetime and avoids overvoltage failure of switching controllers in compact adapters. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feeding lines. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on grounded-return path to clamp negative-going transients. Use Value: Ensures uninterrupted operation during field-installation surges or nearby lightning strikes on outdoor cabling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5B | Lower VWM (20.5 V), lower VC (38.9 V at 15.4 A), same SMB package, non-AEC-Q101. | Less margin for 24 V nominal systems; unsuitable for automotive under-hood use due to missing AEC-Q101 qualification. | Select when cost-sensitive industrial designs require basic surge protection without automotive qualification. |
| 1.5SMC27A | Same VWM/VBR/VC specs, but in larger SMC (DO-214AB) package; higher thermal mass but 2.5× footprint area. | Requires more PCB area; better for high-repetition-rate surges due to lower RθJA (~50 °C/W vs. 100 °C/W). | Choose when thermal performance outweighs board space constraints, especially in high-ambient-temperature environments. |
Compared with SMAJ24A-E3/5B and 1.5SMC27A, the P6SMB27AHM3_B/I uniquely combines AEC-Q101 qualification, SMB footprint efficiency, and precise 23.1 V standoff - making it optimal for space-limited automotive and industrial designs requiring certified reliability and fast clamping.
Availability
P6SMB27AHM3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom DC feeding circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB27AHM3_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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and consumer electronics - engineered for robust surge handling, low clamping voltage, and compatibility with automated SMT assembly.
FAQ
What is the clamping voltage of P6SMB27AHM3_B/I at its rated peak pulse current?
The P6SMB27AHM3_B/I has a maximum clamping voltage (VC) of 37.5 V at 16.0 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB27AHM3_B/I maintains this clamping performance across its qualified operating temperature range.
Is P6SMB27AHM3_B/I suitable for automotive applications?
Yes, P6SMB27AHM3_B/I is AEC-Q101 qualified (denoted by the HM3 suffix and B revision code), making it suitable for automotive applications including engine control units, body electronics, and ADAS subsystems. Its construction, testing, and packaging meet automotive reliability standards for temperature cycling, humidity, and surge endurance - confirmed in Vishay's official qualification report for the P6SMB series.
What does the "_B/I" suffix mean in P6SMB27AHM3_B/I?
The "_B" indicates AEC-Q101 qualification for the P6SMB27A variant (applicable to VWM ≤ 220 V), while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. The "HM3" denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance. Together, P6SMB27AHM3_B/I identifies a fully automotive-qualified, environmentally compliant, high-volume production variant of the P6SMB27A TVS diode.
How does P6SMB27AHM3_B/I compare to bidirectional TVS diodes in the same series?
P6SMB27AHM3_B/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., positive supply rails); bidirectional variants like P6SMB27CA use the "CA" suffix and suppress surges in both directions - suitable for AC lines or differential data signals. The P6SMB27AHM3_B/I offers tighter VBR tolerance and lower leakage than equivalent bidirectional parts, but cannot replace them in AC-coupled applications without circuit redesign.
What is the thermal resistance of P6SMB27AHM3_B/I, and how does it affect layout design?
P6SMB27AHM3_B/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. This value assumes minimal copper area; increasing pad size or adding internal ground planes lowers RθJA. Layout must allocate adequate copper to avoid exceeding +150 °C junction temperature during repetitive surge events - especially critical in enclosed industrial enclosures.
P6SMB27AHM3_B/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:
- 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)
P6SMB27AHM3_B/I FAQ
1.How can I place an order for P6SMB27AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27AHM3_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 P6SMB27AHM3_B/I reliable?
The price and inventory of P6SMB27AHM3_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 P6SMB27AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB27AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27AHM3_B/I?
P6SMB27AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27AHM3_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 P6SMB27AHM3_B/I?
For technical support, including P6SMB27AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB27AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB27AHM3_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 P6SMB27AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB27AHM3_B/I?
All P6SMB27AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27AHM3_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 P6SMB27AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB27AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27AHM3_B/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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