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Vishay General Semiconductor - Diodes Division P6SMB27CAHM3/I
- Part No.:
- P6SMB27CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27CAHM3/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
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Product details
Overview
P6SMB27CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 27 V standoff 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB27CAHM3/I datasheet, P6SMB27CAHM3/I pinout, P6SMB27CAHM3/I application, or P6SMB27CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB (DO-214AA) package dimensions, clamping performance under surge conditions, and direct alternatives for ESD/surge-hardened designs.
Technical Context
The P6SMB27CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±37.5 V while maintaining ≤1.0 μA reverse leakage at 23.1 V. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting downstream MOSFETs and analog front-ends from inductive switching spikes.
Rated for -65 °C to +150 °C junction temperature, it meets JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow peak), with halogen-free, RoHS-compliant construction per Vishay HM3 suffix specification. The device is AEC-Q101 qualified for automotive use, confirmed by ordering code suffix "HM3" and revision "I".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 25.7–28.4 V at 1.0 mA - Verified avalanche onset range; ensures predictable turn-on during transients. |
| 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 ICs. |
| PPPM | 600 W - Sustains standardized lightning-surge energy without failure; validated per IEC 61000-4-5 waveform. |
| IPPM | 16.0 A - Peak surge current handled at rated clamping voltage; determines minimum trace width and PCB layout robustness. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; both ends function identically under reverse or forward transient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as input/output for clamping; no orientation required during placement - simplifies layout and reduces assembly errors. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - supports ASIL-B system integration. |
| Halogen-free & RoHS-compliant (HM3) | Meets IPC-1752A material declaration requirements and EU Directive 2015/863; eliminates brominated flame retardants in molding compound. |
| 600 W peak pulse power (10/1000 μs) | Withstands repeated ISO 7637-2 Pulse 1/2a/3a surges without degradation - suitable for 12 V/24 V vehicle power networks. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage exposure during clamping - preserves signal integrity in CAN, LIN, and sensor analog paths. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead and avoids moisture-induced popcorning. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤37.5 V, preventing ADC saturation and latch-up in 3.3 V/5 V MCU inputs while supporting AEC-Q101 compliance. |
Use Scenario: Shielding digital input channels of programmable logic controllers from 24 V DC field wiring surges caused by relay coil de-energization. IC Role / Device Role / Timing Role: Parallel-connected TVS across input optocoupler terminals to shunt surge energy before isolation barrier. Use Value: Clamps 24 V line transients to safe levels within 1 ns, preserving optocoupler CMTI rating and enabling >10 kV/μs common-mode immunity. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Safeguarding RS-485 transceiver bus lines against lightning-induced surges in outdoor network equipment. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to ground, placed upstream of transceiver ESD diodes. Use Value: Absorbs up to 600 W of surge energy while maintaining <10 pF junction capacitance - avoids signal distortion at 10 Mbps data rates. |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters to protect USB controller ICs during AC line transients. IC Role / Device Role / Timing Role: Clamp device across 5 V/9 V/15 V output rails to limit post-regulator overshoot during fault recovery. Use Value: Delivers 37.5 V clamping at 16 A with <1 μA leakage at 23.1 V - prevents false overvoltage shutdown while minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28CA | 28 V VWM, 45.4 V VC at 13.2 A, same SMB package but lower PPPM (400 W), non-AEC-Q101 | Limited to commercial-grade industrial and consumer use; not qualified for automotive under-hood deployment. | Select when cost sensitivity outweighs AEC-Q101 requirement and surge energy is ≤400 W. |
| SMCJ28CA | 28 V VWM, 45.4 V VC at 25.5 A, larger SMC (DO-214AB) package, 1500 W PPPM, AEC-Q101 available (HE3/HM3) | Higher surge capacity and thermal mass; requires larger PCB area and different pad layout. | Choose for higher-energy threats (e.g., ISO 7637-2 Pulse 5a) where space permits and 1500 W rating is mandatory. |
Compared with SMAJ28CA and SMCJ28CA, the P6SMB27CAHM3/I delivers optimal balance of AEC-Q101 compliance, 600 W surge handling, and compact SMB footprint - making it the preferred choice for space-constrained automotive and industrial modules requiring certified reliability without board redesign.
Availability
P6SMB27CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side clamping requiring stable component supply and full traceability.
Supply support for P6SMB27CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where repeatable clamping performance and long-term stability under thermal cycling are critical.
FAQ
What is the clamping voltage of P6SMB27CAHM3/I at its rated peak pulse current?
The P6SMB27CAHM3/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 per standard test conditions in the Vishay datasheet (Document Number: 88370, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB27CAHM3/I maintains this clamping performance across its qualified operating temperature range.
Is P6SMB27CAHM3/I AEC-Q101 qualified, and what does the "HM3/I" suffix indicate?
Yes, P6SMB27CAHM3/I is AEC-Q101 qualified. The "HM3" suffix denotes halogen-free, RoHS-compliant construction with whisker-resistant matte tin plating, while "I" specifies the revision level per Vishay's ordering nomenclature. This qualification covers temperature cycling, high-temperature reverse bias (HTRB), and surge endurance testing - confirming suitability for automotive under-hood and chassis applications.
What is the standoff voltage (VWM) of P6SMB27CAHM3/I, and how does it relate to system operating voltage?
The P6SMB27CAHM3/I has a standoff voltage (VWM) of 23.1 V, meaning it remains non-conductive up to this DC or RMS voltage level. For reliable operation, system nominal voltage (e.g., 24 V automotive rail) must be ≤ VWM to avoid leakage or premature conduction. The P6SMB27CAHM3/I is therefore suited for 24 V systems with margin for ripple and tolerance, ensuring stable protection without false triggering.
Can P6SMB27CAHM3/I be used in bidirectional signal lines such as RS-485 or CAN bus?
Yes, P6SMB27CAHM3/I is explicitly designed for bidirectional applications, as indicated by the "CA" suffix. Its symmetrical breakdown behavior allows clamping of positive and negative transients equally - ideal for differential buses like RS-485 or CAN where voltage excursions occur in both polarities. The P6SMB27CAHM3/I's low clamping ratio and sub-nanosecond response preserve signal fidelity without adding significant capacitance.
What is the thermal resistance and power derating behavior of P6SMB27CAHM3/I?
The P6SMB27CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads. Its 5.0 W steady-state power dissipation (PD) is derated linearly above 25 °C ambient, reaching zero at 150 °C junction temperature. This derating curve is documented in Figure 2 of the Vishay datasheet (88370), and the P6SMB27CAHM3/I maintains full surge capability even at elevated ambient temperatures due to its 150 °C TJ max rating.
P6SMB27CAHM3/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:
- Discontinued at Digi-Key
- 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:
- 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)
P6SMB27CAHM3/I FAQ
1.How can I place an order for P6SMB27CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27CAHM3/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 P6SMB27CAHM3/I reliable?
The price and inventory of P6SMB27CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB27CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27CAHM3/I?
P6SMB27CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27CAHM3/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 P6SMB27CAHM3/I?
For technical support, including P6SMB27CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27CAHM3/I requirements.
6.How does Aetrix verify that P6SMB27CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB27CAHM3/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 P6SMB27CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB27CAHM3/I?
All P6SMB27CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27CAHM3/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 P6SMB27CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB27CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27CAHM3/I Tags
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