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Vishay General Semiconductor - Diodes Division P6SMB27CAHM3_B/H
- Part No.:
- P6SMB27CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27CAHM3_B/H.pdf
- Description:
- 600W,27V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,105
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Product details
Overview
P6SMB27CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 27 V standoff voltage (VWM), 37.5 V clamping voltage at 16.0 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB27CAHM3_B/H datasheet, P6SMB27CAHM3_B/H pinout, P6SMB27CAHM3_B/H application, or P6SMB27CAHM3_B/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level surge protection design.
Technical Context
This device operates as a voltage-clamped shunt protector: when reverse (or forward, in bidirectional mode) transient voltage exceeds its breakdown threshold (~30.4–33.6 V), it avalanches to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 μA at 23.1 V) and fast response (<1.0 ns).
Designed for automated SMT assembly on standard PCB pads (0.2" × 0.2"), it sustains repetitive 10/1000 μs pulses at 0.01% duty cycle and derates linearly above 25 °C ambient, with thermal resistance RθJA = 100 °C/W and maximum junction temperature of +150 °C.
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 circuit rail. |
| VBR (Breakdown) | 25.7–28.4 V at 1.0 mA - Verified avalanche onset range; ensures predictable turn-on under transient stress. |
| VC (Clamping) | 37.5 V at 16.0 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream MOSFETs or ICs. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| IPPM | 16.0 A - Maximum non-repetitive peak pulse current; determines minimum trace width and pad copper required for safe energy dissipation. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with J-STD-020 reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as input/output; clamps voltage in both directions - eliminates orientation concerns during placement. |
| Case (body) | Thermal and mechanical interface | Non-conductive molded body; heat transfer occurs via soldered terminations to copper pads - requires 5.0 mm × 5.0 mm minimum pad area per lead per datasheet fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| Halogen-free & RoHS-compliant (HM3) | Complies with EU Directive 2011/65/EU and JEDEC JS709C; eliminates brominated flame retardants without compromising UL 94 V-0 flammability rating. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) in industrial PLC backplanes and telecom line cards. |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage exposure during clamping - critical for protecting 3.3 V or 5 V logic interfaces adjacent to 24 V supply rails. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without baking; reduces manufacturing complexity and cost in high-volume automotive electronics production. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point to clamp fast-rising spikes before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under 100 V/10 ms load dump events while limiting clamped voltage to ≤37.5 V - preserving 5 V tolerant receiver inputs. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules subjected to field-wiring induced transients. IC Role / Device Role / Timing Role: Bidirectional clamping element across input terminals to absorb both positive and negative polarity surges from relay coil flyback or cable coupling. Use Value: Enables reliable operation in factory-floor environments with >100,000 surge cycles expected over product lifetime - validated by AEC-Q101 accelerated testing. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Shielding Ethernet PHY interface lines (e.g., RJ45 magnetics secondary side) from lightning-induced surges in outdoor access points. IC Role / Device Role / Timing Role: Primary front-end TVS on differential pairs, coordinated with common-mode chokes to meet IEC 61000-4-5 Level 3 (2 kV line-earth). Use Value: Delivers sub-1 ns response with <1.0 μA leakage at 23.1 V - prevents false triggering while maintaining low standby power in always-on network equipment. |
Use Scenario: Adding secondary-side surge immunity to USB-C PD adapters where 20 V output rails require protection against user-handling ESD and accidental short-circuit transients. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional clamp across VBUS and GND to suppress ±15 kV contact ESD per IEC 61000-4-2. Use Value: Halogen-free HM3 construction satisfies eco-design regulations for global consumer markets without sacrificing clamping performance or thermal reliability. |
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 | Same SMB package, 28 V VWM, 43.0 V VC at 13.5 A; lower PPPM (400 W); non-AEC-Q101. | Commercial-grade only; not qualified for automotive use; suitable for cost-sensitive consumer or office equipment. | Select SMAJ28CA only if AEC-Q101 compliance and 600 W surge capacity are not required - e.g., internal board-level protection in non-automotive systems. |
| SMCJ28CA | Larger SMC (DO-214AB) package; same 28 V VWM, but higher 45.4 V VC at 22.0 A and 1500 W PPPM. | Higher power handling demands larger PCB real estate and different thermal layout; used in high-energy industrial motor drives. | Choose SMCJ28CA when system-level surge tests exceed 600 W - e.g., DIN rail-mounted power supplies requiring IEC 61000-4-5 Level 4 immunity. |
Compared with SMAJ28CA and SMCJ28CA, P6SMB27CAHM3_B/H uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive and industrial edge nodes where reliability, size, and regulatory compliance are jointly critical.
Availability
P6SMB27CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB27CAHM3_B/H 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 TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets board-level transient protection in harsh environments - engineered for automotive, industrial, and telecom applications where AEC-Q101 validation, precise clamping, and SMT manufacturability are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB27CAHM3_B/H?
The "CA" suffix in P6SMB27CAHM3_B/H denotes a bidirectional configuration - meaning the device clamps transient voltages equally in both polarities. Unlike unidirectional variants (e.g., P6SMB27A), it has no cathode band marking and is symmetrically usable across AC-coupled or differential signal paths, such as CAN bus or RS-485 lines. This makes P6SMB27CAHM3_B/H ideal for protecting balanced interfaces without polarity constraints.
Is P6SMB27CAHM3_B/H suitable for automotive applications?
Yes, P6SMB27CAHM3_B/H is AEC-Q101 qualified (indicated by the "HM3_B/H" suffix), meaning it has passed rigorous stress testing for automotive environments - including temperature cycling, high-temperature reverse bias, and ESD. Its 150 °C maximum junction temperature, MSL Level 1 rating, and halogen-free construction make P6SMB27CAHM3_B/H appropriate for under-hood ECUs, ADAS camera modules, and body control units where reliability under thermal and electrical stress is essential.
How does the clamping voltage of P6SMB27CAHM3_B/H compare to its breakdown voltage?
P6SMB27CAHM3_B/H has a breakdown voltage (VBR) range of 25.7–28.4 V at 1.0 mA and a maximum clamping voltage (VC) of 37.5 V at 16.0 A IPPM. This yields a clamping ratio (VC/VBRmin) of approximately 1.32 - indicating tight, predictable voltage limiting during surge events. That ratio ensures protected circuits see minimal overvoltage beyond their rated supply, a key advantage of P6SMB27CAHM3_B/H in 24 V system designs.
What is the significance of the "HM3" in P6SMB27CAHM3_B/H?
The "HM3" in P6SMB27CAHM3_B/H identifies it as halogen-free, RoHS-compliant, and AEC-Q101 qualified - distinguishing it from commercial-grade "E3" or "M3" variants. HM3 devices use bromine-free flame retardants in the epoxy molding compound while maintaining UL 94 V-0 rating. This specification ensures P6SMB27CAHM3_B/H meets environmental and safety standards required for automotive and industrial deployments in regulated global markets.
Can P6SMB27CAHM3_B/H be used in place of a unidirectional TVS like P6SMB27A?
No - P6SMB27CAHM3_B/H is bidirectional and cannot replace unidirectional P6SMB27A in DC-biased circuits where polarity matters (e.g., 24 V supply rail protection). While both share identical VWM (23.1 V) and VC (37.5 V), P6SMB27A conducts only in reverse bias and blocks forward current, whereas P6SMB27CAHM3_B/H clamps in both directions. Substituting P6SMB27CAHM3_B/H for P6SMB27A may cause unintended conduction in forward-biased paths, so circuit topology must be verified before replacement.
P6SMB27CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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:
- 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_B/H FAQ
1.How can I place an order for P6SMB27CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27CAHM3_B/H 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_B/H reliable?
The price and inventory of P6SMB27CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB27CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27CAHM3_B/H?
P6SMB27CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27CAHM3_B/H 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_B/H?
For technical support, including P6SMB27CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB27CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB27CAHM3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB27CAHM3_B/H?
All P6SMB27CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27CAHM3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for P6SMB27CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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