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Vishay General Semiconductor - Diodes Division P6SMB27CA-M3/5B
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- Part No.:
- P6SMB27CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27CA-M3/5B.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,642
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Product details
Overview
P6SMB27CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 23.1 V stand-off voltage (VWM), 27 V nominal 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 capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB27CA-M3/5B datasheet, P6SMB27CA-M3/5B pinout, P6SMB27CA-M3/5B application, or P6SMB27CA-M3/5B equivalent, key selection criteria include bidirectional clamping behavior, 37.5 V clamping threshold at rated surge current, halogen-free RoHS-compliant construction (M3 suffix), SMB package thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement per J-STD-002.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity - critical for protecting AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance requires PCB copper pad design per Vishay's 0.2" × 0.2" (5.0 mm × 5.0 mm) recommendation for full 600 W rating.
The device meets MSL Level 1 per J-STD-020 with a 260 °C reflow peak, supports repetitive surge duty cycles up to 0.01 %, and exhibits a temperature coefficient of VBR of +0.096 %/°C - enabling predictable derating above 25 °C ambient using Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 25.7–28.4 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during transients without premature conduction |
| VC (Clamping) | 37.5 V at 16.0 A (10/1000 µs) - Peak voltage seen by protected circuit under worst-case surge; determines minimum IC withstand rating |
| PPPM | 600 W - Peak transient energy absorption capacity; validates suitability for IEC 61000-4-5 Level 4 surges when properly mounted |
| IPPM | 16.0 A - Maximum non-repetitive surge current supported; sets minimum trace width and fuse coordination requirements |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 2.20 mm height and 3.94 mm length; compatible with IPC-7351B footprint |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band marking required for bidirectional operation - simplifies layout and orientation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses, or floating nodes without polarity constraints or external circuitry |
| 600 W peak pulse power | Supports robust immunity to IEC 61000-4-5 combination wave surges (e.g., ±1 kV line-to-earth) with proper PCB layout |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising surge performance |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and allows standard lead-free reflow profiles without pre-baking |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) over temperature and lifetime - critical for low-power sensor interfaces |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load-dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ESD (±8 kV contact) due to 37.5 V clamping and sub-1 ns response. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog inputs in programmable logic controllers against field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Prevents damage to precision op-amps and ADC front-ends by limiting input voltage to ≤37.5 V during 1 kV/500 A surge events per IEC 61000-4-5. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interfaces, RS-485 transceivers, or DSL line drivers from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage transient suppressor on differential pair lines, preceding GDT or polymer-based secondary protection. Use Value: Fast response (<1 ns) and symmetric clamping ensure common-mode and differential-mode surge suppression without signal distortion. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine or HVAC motor control boards from inductive kickback. IC Role / Device Role / Timing Role: Snubber-style clamp across relay coils or MOSFET drain-source to absorb flyback energy during switching. Use Value: Limits voltage overshoot to 37.5 V, preventing gate oxide rupture in 40 V-rated logic-level MOSFETs and ensuring MCU reset 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 |
|---|---|---|---|
| SMBJ27CA-T | Same VWM (23.1 V), VC = 43.0 V at 13.5 A; lower PPPM (600 W same), higher RθJA (125 °C/W) | Higher clamping voltage reduces margin for 3.3 V/5 V rail protection; less suitable for low-voltage ICs | Select P6SMB27CA-M3/5B when tighter clamping (37.5 V vs. 43.0 V) and lower thermal resistance (100 vs. 125 °C/W) are required |
| 1.5SMC27CA | Same VWM/VBR, but SMC package (larger); VC = 43.0 V at 13.5 A; RθJA ≈ 60 °C/W on large pads | Requires more PCB area; better for high-reliability industrial use where board space permits | Choose P6SMB27CA-M3/5B for space-constrained designs needing SMB footprint and verified 600 W rating with minimal copper |
Compared with SMBJ27CA-T and 1.5SMC27CA, P6SMB27CA-M3/5B delivers superior clamping performance (37.5 V) and optimized thermal efficiency in the compact SMB outline - making it preferred for high-density automotive and industrial PCBs where voltage margin and layout area are critical.
Availability
P6SMB27CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply and halogen-free compliance.
Supply support for P6SMB27CA-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, power handling, and automotive qualification.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications systems - delivering AEC-Q101-qualified variants and standardized SMB packaging for seamless SMT integration.
FAQ
What is the clamping voltage of P6SMB27CA-M3/5B at its rated peak pulse current?
The P6SMB27CA-M3/5B 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 Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring compatibility with 3.3 V, 5 V, or 24 V system rails.
Is P6SMB27CA-M3/5B suitable for automotive applications?
Yes, P6SMB27CA-M3/5B is halogen-free and RoHS-compliant (M3 suffix), and the P6SMB27CA-M3/5B family offers AEC-Q101-qualified versions (e.g., P6SMB27CAHM3_B). While the -M3/5B variant itself is commercial-grade, its construction, thermal specs (TJ max = +150 °C), and robust surge rating make it widely deployed in non-safety-critical automotive subsystems such as body control modules and sensor interfaces.
What does the "CA" suffix indicate in P6SMB27CA-M3/5B?
The "CA" suffix in P6SMB27CA-M3/5B denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, P6SMB27CA-M3/5B has no cathode marking and functions identically regardless of terminal orientation, simplifying layout for AC-coupled or floating signal lines.
How does the SMB package of P6SMB27CA-M3/5B affect its thermal performance?
The SMB (DO-214AA) package of P6SMB27CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on Vishay's recommended 0.2" × 0.2" copper pads. This allows full 600 W peak pulse power dissipation only with adequate PCB copper; reducing pad size increases thermal impedance and requires derating per Figure 2 in datasheet 88370.
Can P6SMB27CA-M3/5B replace P6SMB27A-M3/5B in a design?
No - P6SMB27CA-M3/5B is bidirectional, while P6SMB27A-M3/5B is unidirectional with a cathode band. Substituting them requires verifying circuit topology: unidirectional types require correct polarity alignment and block forward current, whereas bidirectional types conduct in both directions above VBR. Using P6SMB27CA-M3/5B in place of P6SMB27A-M3/5B may cause unintended conduction in DC-biased lines.
P6SMB27CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB27CA-M3/5B FAQ
1.How can I place an order for P6SMB27CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27CA-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 P6SMB27CA-M3/5B reliable?
The price and inventory of P6SMB27CA-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 P6SMB27CA-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB27CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27CA-M3/5B?
P6SMB27CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27CA-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 P6SMB27CA-M3/5B?
For technical support, including P6SMB27CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27CA-M3/5B requirements.
6.How does Aetrix verify that P6SMB27CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB27CA-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 P6SMB27CA-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB27CA-M3/5B?
All P6SMB27CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27CA-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 P6SMB27CA-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB27CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27CA-M3/5B Tags
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