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Vishay General Semiconductor - Diodes Division P6SMB27A-M3/5B
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- Part No.:
- P6SMB27A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27A-M3/5B.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,198
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Product details
Overview
P6SMB27A-M3/5B 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 IT = 1.0 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 capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB27A-M3/5B datasheet, P6SMB27A-M3/5B pinout, P6SMB27A-M3/5B application, or P6SMB27A-M3/5B equivalent, key selection criteria include unidirectional polarity, SMB package thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification eligibility (via HM3 suffix), halogen-free RoHS compliance, and clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage behavior and fast response time (<1 ns), while low incremental surge resistance enables effective energy diversion during transient events such as inductive load switching or ESD.
The P6SMB27A-M3/5B is rated for continuous power dissipation of 5.0 W at TA = 50 °C and supports peak forward surge current up to 100 A (8.3 ms half-sine), making it suitable for both DC power rail and low-energy signal line protection where space-constrained SMB mounting is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 37.5 V at 16.0 A - clamped voltage seen by protected circuit during worst-case 600 W transient |
| IPPM | 16.0 A with 10/1000 µs waveform - peak surge current handling capacity under standard test condition |
| PPPM | 600 W - peak pulse power rating indicating transient energy absorption capability |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for derating in enclosed PCB layouts |
| TJ max. | +150 °C - maximum allowable junction temperature, supporting operation in high-ambient industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts avalanche current when voltage exceeds VBR |
| Anode (unbanded end) | Reference/ground return | Typically tied to system ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA at VWM) across temperature and lifetime |
| SMB (DO-214AA) package | 0.220" × 0.130" footprint supports automated placement and provides 5.0 mm × 5.0 mm copper pad thermal performance |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for industrial and automotive-tier supply chains |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input rail and chassis ground to limit transient overvoltage. Use Value: Clamps 23.1 V nominal rail to ≤37.5 V during 600 W surges, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point to shunt ESD and ISO 7637-2 pulses. Use Value: Sub-1 ns response and 37.5 V clamping ensure signal integrity remains intact during ±25 kV contact ESD events. |
| Consumer Equipment AC/DC Adapter Input | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side overvoltage suppression in wall adapters powering USB-C PD devices and smart home hubs. IC Role / Device Role / Timing Role: Low-leakage unidirectional suppressor placed across output capacitor to absorb flyback spikes. Use Value: 1.0 µA max reverse leakage at 23.1 V preserves no-load efficiency; 600 W rating handles repeated switch-mode ringing. |
Use Scenario: Front-end protection of Ethernet PHYs and PoE injectors exposed to lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Primary-stage TVS on DC bias lines feeding isolated magnetics and data transformers. Use Value: 100 °C/W RθJA allows thermal management via 5 mm × 5 mm pads, meeting GR-1089-CORE Level 3 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A | Same VBR range (25.7–28.4 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-power or short-duration transients due to reduced thermal mass | Select when board space is constrained and peak pulse energy is ≤300 W |
| 1.5SMC27A | Same electrical specs but SMC (DO-214AB) package - larger body, lower RθJA = 60 °C/W, higher IFSM = 200 A | Better suited for high-repetition surges and higher ambient temperatures | Select when thermal margin is critical or 8.3 ms surge current exceeds 100 A |
Compared with SMAJ27A and 1.5SMC27A, the P6SMB27A-M3/5B delivers balanced surge capability and thermal performance in the mid-size SMB package - offering superior power density over SMA while requiring less PCB area than SMC, ideal for cost-sensitive industrial modules.
Availability
P6SMB27A-M3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, consumer adapter designs, and telecom line cards requiring stable component supply with halogen-free compliance and MSL Level 1 reflow readiness.
Supply support for P6SMB27A-M3/5B 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, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting industrial automation, automotive subsystems, and infrastructure equipment where consistent clamping and long-term stability are mandatory.
FAQ
What is the breakdown voltage tolerance of the P6SMB27A-M3/5B?
The P6SMB27A-M3/5B has a specified breakdown voltage range of 25.7 V to 28.4 V at 1.0 mA test current, corresponding to a ±5% tolerance around the nominal 27 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature ranges, critical for protecting sensitive 24 V logic interfaces without premature conduction.
Is the P6SMB27A-M3/5B suitable for automotive applications?
The P6SMB27A-M3/5B itself is not AEC-Q101 qualified; however, the identical electrical design is available in AEC-Q101-compliant versions using the HM3 suffix (e.g., P6SMB27AHM3_B). The M3 suffix indicates halogen-free RoHS compliance only. For automotive use, specify P6SMB27AHM3_B/I or P6SMB27AHM3_B/H depending on reel size and qualification revision.
What is the maximum clamping voltage of the P6SMB27A-M3/5B under surge conditions?
The P6SMB27A-M3/5B exhibits a maximum clamping voltage (VC) of 37.5 V when subjected to its rated peak pulse current of 16.0 A with a 10/1000 µs waveform. This value is guaranteed per datasheet testing and represents the highest voltage the protected circuit will experience during a full 600 W transient event.
How does the SMB package of the P6SMB27A-M3/5B compare thermally to SMA and SMC packages?
The SMB package of the P6SMB27A-M3/5B offers a thermal resistance of RθJA = 100 °C/W, positioned between the higher 140 °C/W of the smaller SMA and the lower 60 °C/W of the larger SMC. This makes the P6SMB27A-M3/5B optimal for moderate-power surge environments where PCB area is limited but thermal headroom exceeds what SMA can provide.
Can the P6SMB27A-M3/5B be used in bidirectional configurations?
No - the P6SMB27A-M3/5B is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional operation, Vishay offers the P6SMB27CA variant (with CA suffix), which provides symmetrical clamping in both polarities and no polarity marking. Using P6SMB27A-M3/5B in reverse-biased AC paths risks permanent failure due to forward conduction.
P6SMB27A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB27A-M3/5B FAQ
1.How can I place an order for P6SMB27A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27A-M3/5B 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 P6SMB27A-M3/5B reliable?
The price and inventory of P6SMB27A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB27A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27A-M3/5B?
P6SMB27A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27A-M3/5B 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 P6SMB27A-M3/5B?
For technical support, including P6SMB27A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27A-M3/5B requirements.
6.How does Aetrix verify that P6SMB27A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB27A-M3/5B 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 P6SMB27A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB27A-M3/5B?
All P6SMB27A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27A-M3/5B, 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 P6SMB27A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB27A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27A-M3/5B Tags
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Diodes Incorporated
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