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Vishay General Semiconductor - Diodes Division P6SMB27A-E3/52
- Part No.:
- P6SMB27A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27A-E3/52.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB27A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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), clamps transients to ≤37.5 V at 16.0 A peak pulse current (IPPM), and delivers 600 W peak pulse power with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and DC power rail protection.
For engineers reviewing the P6SMB27A-E3/52 datasheet, P6SMB27A-E3/52 pinout, P6SMB27A-E3/52 application, or P6SMB27A-E3/52 equivalent, this page provides verified electrical parameters, SMB (DO-214AA) package details, clamping behavior under surge conditions, thermal derating curves, and direct alternatives for ESD/lightning transient suppression in commercial and AEC-Q101-qualified designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM = 23.1 V, then rapidly avalanches above VBR = 25.7–28.4 V to limit transient voltages. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response time (<1.0 ns).
Thermally, it exhibits RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W (junction-to-lead), supporting continuous dissipation of 5.0 W at TA = 50 °C. Junction temperature range spans −65 °C to +150 °C, with MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at IT = 1 mA - defines reliable avalanche initiation window for predictable clamping onset |
| VWM | 23.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤37.5 V at IPPM = 16.0 A (10/1000 µs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capability under standardized 10/1000 µs waveform, 0.01% duty cycle |
| IFSM | 100 A - maximum non-repetitive forward surge current (8.3 ms half-sine), critical for input rectifier-stage protection |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive or enclosed industrial environments |
| Package | SMB (DO-214AA) - surface-mount outline with 0.220" × 0.130" footprint, optimized for automated placement and thermal pad layout |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, cathode indicated by band marking. Designed for soldering per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node in unidirectional configuration; enables clamping when cathode voltage exceeds VBR |
| Cathode | Reverse-biased terminal / high-side connection | Marked with band; connected to protected line (e.g., 24 V rail or sensor output); conducts avalanche current during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems without external series impedance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., inductive switch-off), improving margin for 3.3 V/5 V logic interfaces |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling, reducing manufacturing cost and yield risk |
| AEC-Q101 qualification option (HE3/HM3 suffixes) | Validates robustness for automotive applications including engine control units, body electronics, and ADAS sensor front-ends |
Applications
| Industrial PLC Digital Input Protection | Automotive CAN Bus Power Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from inductive kickback and field-wiring transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between input terminal and ground, clamping surges before they reach optocoupler or MCU GPIO. Use Value: Limits voltage to ≤37.5 V during 16 A transients, preserving isolation barrier integrity and preventing false triggering or latch-up in downstream logic. |
Use Scenario: Safeguarding 12 V power supply rails feeding CAN transceivers in automotive ECUs against load dump and jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC line upstream of CAN transceiver, activated within <1 ns of overvoltage onset. Use Value: Withstands 600 W pulses while maintaining VC ≤37.5 V, ensuring transceiver survival during ISO 7637-2 Pulse 5a (load dump) up to 35 V. |
| DC Power Supply Output Rail Protection | Consumer Appliance Motor Driver Protection |
|
Use Scenario: Secondary-side transient suppression on regulated 5 V/12 V outputs of AC-DC adapters and DC-DC converters. IC Role / Device Role / Timing Role: Final-stage TVS across output capacitor, absorbing residual spikes from switching noise or capacitive coupling. Use Value: Clamps 10/1000 µs surges to ≤37.5 V with minimal capacitance (<100 pF), avoiding interference with feedback loop stability or load regulation. |
Use Scenario: Protecting gate drivers and logic inputs in brushed DC motor control circuits from commutation-induced voltage spikes. IC Role / Device Role / Timing Role: Shunt suppressor across H-bridge supply rail, triggered by inductive flyback during PWM turn-off. Use Value: Absorbs 100 A IFSM single-pulse energy without failure, preventing driver IC destruction during stall or rapid direction reversal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | Higher VWM = 24.4 V, VC = 43.0 V @ 13.0 A, same SMB package and 600 W rating | Less tight clamping margin (ΔV = +5.5 V) but higher stand-off headroom for noisy 24 V systems | Select SMAJ28A when system nominal voltage varies widely (e.g., 20–28 V) and clamping margin >37.5 V is acceptable |
| 1.5SMC27A | Same VBR/VWM/VC, but larger SMC (DO-214AB) package (0.285" × 0.185"), RθJA = 60 °C/W | Better thermal performance for high-duty-cycle surges; requires larger PCB area and different stencil design | Choose 1.5SMC27A for industrial power supplies with frequent repetitive transients where SMB thermal limits may be exceeded |
Compared with SMAJ28A and 1.5SMC27A, P6SMB27A-E3/52 offers the tightest clamping (37.5 V) in the smallest SMB footprint, making it optimal for space-constrained 24 V sensor nodes and automotive modules where board area and precise voltage limiting are critical.
Availability
P6SMB27A-E3/52 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, DC power supply outputs, and consumer appliance motor drivers requiring stable component supply, RoHS-compliant packaging, and traceable sourcing.
Supply support for P6SMB27A-E3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - balancing low clamping voltage, fast response, and robust surge handling in compact surface-mount packages.
FAQ
What is the breakdown voltage tolerance for P6SMB27A-E3/52?
The P6SMB27A-E3/52 has a specified breakdown voltage range of 25.7 V to 28.4 V at test current IT = 1 mA, representing a ±5% tolerance around the nominal 27 V rating. This tight VBR distribution ensures consistent clamping behavior across production lots and supports reliable design margining in 24 V systems where overvoltage thresholds must be precisely controlled.
Is P6SMB27A-E3/52 suitable for automotive applications?
Yes - while the base P6SMB27A-E3/52 is commercial-grade, Vishay offers AEC-Q101-qualified variants (e.g., P6SMB27AHE3_B) with identical electrical specs and enhanced reliability testing for automotive use. The P6SMB27A-E3/52 itself meets MSL Level 1 and 260 °C reflow, making it suitable for non-safety-critical automotive subsystems like infotainment power rails or lighting control when validated per system-level requirements.
What is the maximum clamping voltage of P6SMB27A-E3/52 under surge conditions?
The P6SMB27A-E3/52 clamps to a maximum of 37.5 V when subjected to its rated peak pulse current of 16.0 A using the standard 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, providing a known upper bound for protected circuit voltage stress during transient events such as ESD, lightning-induced surges, or inductive switching spikes.
How does the SMB package of P6SMB27A-E3/52 affect thermal performance?
The SMB (DO-214AA) package of P6SMB27A-E3/52 delivers RθJA = 100 °C/W when mounted on 0.2" × 0.2" copper pads - sufficient for intermittent surge duty but limiting for repetitive high-power transients. For sustained operation, thermal relief via larger copper areas or supplemental heatsinking is recommended; alternatively, the larger SMC-package 1.5SMC27A offers RθJA = 60 °C/W for improved steady-state dissipation.
Does P6SMB27A-E3/52 have bidirectional capability?
No - P6SMB27A-E3/52 is strictly unidirectional, with polarity marked by a cathode band. Bidirectional variants use the "CA" suffix (e.g., P6SMB27CA). Using P6SMB27A-E3/52 in AC or floating-line applications would result in forward conduction during negative half-cycles, potentially causing failure. Always verify polarity alignment during PCB layout and schematic capture.
P6SMB27A-E3/52 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-E3/52 FAQ
1.How can I place an order for P6SMB27A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27A-E3/52 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-E3/52 reliable?
The price and inventory of P6SMB27A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB27A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27A-E3/52?
P6SMB27A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27A-E3/52 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-E3/52?
For technical support, including P6SMB27A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27A-E3/52 requirements.
6.How does Aetrix verify that P6SMB27A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB27A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB27A-E3/52?
All P6SMB27A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB27A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27A-E3/52 Tags
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