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Vishay General Semiconductor - Diodes Division P6SMB27A-E3/5B
- Part No.:
- P6SMB27A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27A-E3/5B.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,353
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Product details
Overview
P6SMB27A-E3/5B 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 industrial power supplies.
For engineers reviewing the P6SMB27A-E3/5B datasheet, P6SMB27A-E3/5B pinout, P6SMB27A-E3/5B application, or P6SMB27A-E3/5B equivalent, this page delivers verified electrical parameters, thermal derating behavior, RoHS-compliant packaging details, and AEC-Q101 qualification status - all critical for ESD/surge protection design validation and automotive-grade BOM selection.
Technical Context
The P6SMB27A-E3/5B operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable reverse breakdown and low incremental surge resistance. Its clamping response is optimized for repetitive 10/1000 μs transients at 0.01% duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead).
It meets J-STD-020 MSL Level 1 moisture sensitivity, supports solder reflow up to 260 °C peak, and exhibits a +0.096 %/°C temperature coefficient of VBR. The device is rated for operation from −65 °C to +150 °C junction temperature and handles 100 A non-repetitive forward surge (8.3 ms half-sine) - confirming suitability for high-energy transient suppression in DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - Maximum continuous reverse voltage before significant leakage; sets 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 - Peak voltage seen by protected circuit under 600 W transient; defines worst-case stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; validates robustness against lightning-induced surges and inductive switching spikes. |
| IPPM | 16.0 A - Corresponding peak pulse current at VC; used to size PCB trace width and verify layout survivability. |
| TJ max | +150 °C - Maximum junction temperature; enables thermal design for ambient conditions up to +85 °C with appropriate pad area. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; guides heatsinking requirements for sustained surge duty. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), MSL Level 1, UL 94 V-0 molding compound. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge or bias conditions. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); avalanches into conduction when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Validated for IEC 61000-4-5 Level 4 surge immunity testing on 24 V industrial control inputs. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives in humid environments. |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard SMT reflow profiles up to 260 °C peak. |
| AEC-Q101 qualified option | P6SMB27AHE3_B variant available for automotive body electronics requiring validated reliability per stress test standard. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns), improving protection margin for sensitive CMOS inputs. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: 24 V DC input stage of PLC I/O module exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches DC-DC converter and microcontroller power pins. Use Value: Limits voltage to ≤37.5 V during 16 A surge, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: LIN bus line protection in door module subjected to ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Standby-mode reverse-biased suppressor absorbing negative-going spikes while maintaining low leakage (<1 μA at 23.1 V). Use Value: Maintains <100 nA leakage at 25 °C, ensuring no impact on LIN bus quiescent current budget or wake-up sensitivity. |
| Consumer Appliance Motor Drive | Telecom PoE Interface |
|
Use Scenario: H-bridge gate driver supply rail in smart HVAC blower, subject to back-EMF from brushed DC motor commutation. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping element placed adjacent to gate driver IC VDD pin. Use Value: Clamps 100 V transients within 1 ns, limiting stress on 20 V-rated gate drivers and avoiding false shutdowns. |
Use Scenario: Secondary-side DC output (57 V) of IEEE 802.3af/at PoE PD controller exposed to cable discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on powered device input, coordinated with upstream PoE controller OVP threshold. Use Value: Matches 57 V nominal with 23.1 V VWM, providing 2× margin before clamping - enabling clean fault detection without nuisance triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A (ON Semiconductor) | Identical VWM (23.1 V), VC = 43.5 V at 13.8 A; 10% higher clamping voltage; same SMB package and RoHS compliance. | Higher VC reduces protection margin for 3.3 V logic; suitable where 24 V rail tolerance allows >40 V transient headroom. | Select SMBJ27A only if system-level testing confirms 43.5 V clamping does not exceed downstream component absolute maximum ratings. |
| 1.5SMC27A (Littelfuse) | Same VWM/VBR specs, but SMC (DO-214AB) package - 2.5 mm wider body; RθJA = 65 °C/W (lower thermal resistance). | Larger footprint limits use in space-constrained layouts; improved thermal performance supports higher average surge repetition rates. | Choose 1.5SMC27A when board area permits and thermal management of repeated transients is prioritized over miniaturization. |
Compared with P6SMB27A-E3/5B, SMBJ27A trades tighter clamping for identical form factor, while 1.5SMC27A improves thermal dissipation at the cost of larger PCB area - making P6SMB27A-E3/5B optimal for compact, cost-sensitive industrial designs needing precise 37.5 V clamping control.
Availability
P6SMB27A-E3/5B is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and telecom power interface applications requiring stable component supply, RoHS compliance, and repeatable surge performance across production lots.
Supply support for P6SMB27A-E3/5B 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, precision, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained surface-mount applications, with design focus on consistent clamping, low leakage, and compatibility with automated assembly - especially for industrial and automotive power systems.
FAQ
What is the maximum clamping voltage of the P6SMB27A-E3/5B under standard test conditions?
The P6SMB27A-E3/5B 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 per JEDEC standards and represents the highest voltage the device allows across its terminals during a defined transient event - a critical parameter for ensuring protected ICs remain within their absolute maximum voltage ratings. The P6SMB27A-E3/5B maintains this clamping performance across its full operating temperature range.
Is the P6SMB27A-E3/5B RoHS-compliant and lead-free?
Yes, the P6SMB27A-E3/5B is RoHS-compliant and lead-free, as confirmed by the "E3" suffix in its ordering code. It meets EU RoHS Directive 2011/65/EU and uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The device also passes JESD 201 Class 2 whisker testing and carries UL 94 V-0 flammability certification for its molding compound - all documented in Vishay's official datasheet revision 09-Jan-2024.
Does the P6SMB27A-E3/5B have AEC-Q101 qualification?
The base P6SMB27A-E3/5B is commercial-grade and not AEC-Q101 qualified; however, the automotive-qualified variant P6SMB27AHE3_B (with "HE3" and "B" suffixes) is explicitly listed in the Vishay datasheet as AEC-Q101 qualified for use in automotive applications. That variant shares identical electrical characteristics but undergoes additional stress testing per AEC-Q101 - so P6SMB27A-E3/5B itself must be replaced with P6SMB27AHE3_B for automotive-grade deployments.
What is the thermal resistance and recommended pad layout for the P6SMB27A-E3/5B?
The P6SMB27A-E3/5B 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 specified in the Vishay datasheet. The recommended mounting pad layout matches the SMB (DO-214AA) outline: minimum pad width 0.060", length 0.086", with 0.220" center-to-center spacing. Adhering to this layout ensures rated power dissipation and avoids thermal derating beyond datasheet curves.
How does the P6SMB27A-E3/5B compare to bidirectional TVS diodes like P6SMB27CA?
The P6SMB27A-E3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply rails), offering lower leakage (<1 μA at VWM) and sharper clamping onset. In contrast, P6SMB27CA is bidirectional, suited for AC or floating signal lines (e.g., RS-485), but exhibits higher leakage and symmetric clamping in both directions. The P6SMB27A-E3/5B cannot replace P6SMB27CA in AC-coupled applications without circuit redesign due to polarity dependence.
P6SMB27A-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB27A-E3/5B FAQ
1.How can I place an order for P6SMB27A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27A-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB27A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB27A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27A-E3/5B?
P6SMB27A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27A-E3/5B 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-E3/5B?
For technical support, including P6SMB27A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27A-E3/5B requirements.
6.How does Aetrix verify that P6SMB27A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB27A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB27A-E3/5B?
All P6SMB27A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB27A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27A-E3/5B Tags
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