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Vishay General Semiconductor - Diodes Division P6SMB27CAHM3_A/I
- Part No.:
- P6SMB27CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27CAHM3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,584
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Product details
Overview
P6SMB27CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 23.1 V standoff 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 automotive sensor interfaces, industrial I/O lines, and telecom line cards.
For engineers reviewing the P6SMB27CAHM3_A/I datasheet, P6SMB27CAHM3_A/I pinout, P6SMB27CAHM3_A/I application, or P6SMB27CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while the SMB package supports high surge current handling without derating up to TA = 50 °C.
The device meets J-STD-020 MSL Level 1 (peak reflow ≤ 260 °C) and is qualified to AEC-Q101 for automotive under-hood and chassis applications. Its 150 °C maximum junction temperature and 100 °C/W junction-to-ambient thermal resistance enable reliable operation in thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 23.1 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 25.7–28.4 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during overvoltage events |
| VC (Clamping) | 37.5 V at 16.0 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs |
| PPPM | 600 W - Surge energy absorption capacity per single 10/1000 µs pulse; supports repetitive 0.01% duty cycle |
| IPPM | 16.0 A - Peak pulse current corresponding to VC; determines minimum trace width and pad sizing for PCB layout |
| TJ max. | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments without forced cooling |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance allowing efficient heat transfer to PCB copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping requires no orientation during placement |
| Case (SMB body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; matte tin-plated leads ensure solderability per J-STD-002 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating signal lines without polarity concerns - e.g., RS-485, CAN, or sensor differential pairs |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control and ADAS modules |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20; eliminates brominated flame retardants for safer end-of-life processing |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when mounted on 5 mm × 5 mm copper pads |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak - compatible with standard lead-free SMT assembly |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching precision ADC front-end. Use Value: Limits induced voltage to ≤37.5 V during 10/1000 µs surges, preserving sensor accuracy and preventing ADC saturation or latch-up. |
Use Scenario: Safeguarding 24 V DC digital input channels on PLC modules subjected to inductive switching noise from solenoid valves. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing repetitive 600 W surges on field-side inputs, referenced to common-mode ground. Use Value: Maintains logic-level integrity by clamping transients within 1 ns, eliminating false triggering of optocoupler inputs. |
| Telecom Line Card Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY interface traces on base station line cards from lightning-induced surges coupled via PoE cabling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp refinement for fast-rising edges. Use Value: Reduces residual clamping voltage to 37.5 V - sufficient to prevent damage to 3.3 V or 5 V PHY transceivers downstream. |
Use Scenario: Suppressing line-to-line surges on AC-DC adapter primary-side rectifier outputs feeding USB-C PD controllers. IC Role / Device Role / Timing Role: Bidirectional clamp across bulk capacitor terminals to absorb ringing and EFT bursts during plug/unplug events. Use Value: Prevents overvoltage stress on electrolytic capacitor and controller IC, extending product lifetime in ungrounded consumer systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Lower peak power (400 W), higher VC (38.9 V at 10.3 A), same SMB package | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5KE27CA | Higher power (1500 W), axial DO-201 package, larger footprint, slower response due to higher parasitic inductance | Requires through-hole mounting; unsuitable for high-density SMT designs | Choose only when legacy board redesign is impractical and PCB space permits axial components |
Compared with SMAJ24CA and 1.5KE27CA, P6SMB27CAHM3_A/I delivers superior surge robustness in a compact, automotive-qualified SMT package - enabling smaller PCB area, faster response, and guaranteed reliability in harsh environments without layout compromise.
Availability
P6SMB27CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom line card surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for P6SMB27CAHM3_A/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 and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robust clamping, low leakage, and seamless integration into automated SMT lines.
FAQ
What does the "CA" suffix indicate in P6SMB27CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB27CAHM3_A/I provides symmetrical clamping for voltage transients of either polarity. Unlike unidirectional variants (e.g., P6SMB27A), it has no cathode band marking and functions identically across both terminals, making it ideal for AC-coupled or floating signal paths such as RS-485, CAN bus, or differential sensor outputs.
Is P6SMB27CAHM3_A/I qualified for automotive applications?
Yes, P6SMB27CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of P6SMB27CAHM3_A/I and at what current is it specified?
The maximum clamping voltage (VC) of P6SMB27CAHM3_A/I is 37.5 V, measured at a peak pulse current (IPPM) of 16.0 A using the standardized 10/1000 µs double-exponential waveform. This value represents the worst-case voltage imposed on the protected circuit during surge events and is critical for ensuring downstream ICs remain within their absolute maximum ratings.
How does the HM3 suffix differ from E3 or M3 in the P6SMB27CAHM3_A/I ordering code?
The HM3 suffix in P6SMB27CAHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). The "_A/I" denotes tape-and-reel packaging in 13-inch reels (3200 units), optimized for high-volume SMT assembly lines requiring full traceability and automotive-grade material compliance.
Can P6SMB27CAHM3_A/I be used in place of a unidirectional TVS like P6SMB27AHM3_A/I?
No - P6SMB27CAHM3_A/I is strictly bidirectional and cannot replace unidirectional variants like P6SMB27AHM3_A/I in circuits requiring forward conduction or DC biasing, such as DC power rail protection. Substitution would compromise functionality: the bidirectional device lacks defined anode/cathode polarity and exhibits symmetrical IV characteristics, whereas unidirectional types conduct only in reverse breakdown and block forward current - a fundamental operational difference confirmed in Vishay's electrical characteristics table.
P6SMB27CAHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB27CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27CAHM3_A/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_A/I reliable?
The price and inventory of P6SMB27CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB27CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27CAHM3_A/I?
P6SMB27CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27CAHM3_A/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_A/I?
For technical support, including P6SMB27CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB27CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB27CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB27CAHM3_A/I?
All P6SMB27CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB27CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB27CAHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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