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Vishay General Semiconductor - Diodes Division P6SMB12CAHM3/H
- Part No.:
- P6SMB12CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CAHM3/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,907
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Product details
Overview
P6SMB12CAHM3/H 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 or power lines. It features a 12 V standoff voltage (VWM), 16.7 V maximum clamping voltage at 35.9 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB12CAHM3/H datasheet, P6SMB12CAHM3/H pinout, P6SMB12CAHM3/H application, or P6SMB12CAHM3/H equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low clamping ratio (1.39), and AEC-Q101 qualification are required in space-constrained SMB packages.
Technical Context
The P6SMB12CAHM3/H operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<5.0 μA at 10.2 V), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
Thermally, it exhibits a junction-to-ambient thermal resistance of 100 °C/W and a junction-to-lead resistance of 20 °C/W, enabling reliable operation up to 150 °C junction temperature. The device is rated for repetitive 0.01% duty cycle surges and meets JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 10.2 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 11.4–12.6 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 16.7 V at 35.9 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform; validates surge immunity per IEC 61000-4-5. |
| TJ max | +150 °C - Maximum allowable junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint; compatible with automated SMT placement and standard 0.2" × 0.2" copper pad layout. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no functional distinction in layout. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; device functions identically regardless of orientation in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive interfaces. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Complies with EU Directive 2011/65/EU and IPC-1752A material declarations for green manufacturing. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without pre-baking or special handling. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Clamps transients to ≤16.7 V while maintaining <5 μA leakage at 10.2 V, preserving signal integrity and preventing false triggering in 12 V systems. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-induced surges and ground bounce. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC I/O terminals, adjacent to optocoupler or level-shifter inputs. Use Value: Absorbs 600 W surge energy without degradation, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards. |
| Telecom Line Interface Protection | Consumer Device USB/UART ESD Guard |
Use Scenario: Shielding RS-485/RS-422 transceivers in base station backhaul or network equipment from lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at connector entry point, before common-mode choke and transceiver. Use Value: Symmetric clamping ensures equal protection for both A/B lines; 16.7 V VC limits stress on ±5 V receiver inputs during fast transients. |
Use Scenario: Adding secondary-level ESD and surge protection to USB 2.0 data lines or UART debug ports in smart home hubs and wearables. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF typical) placed between D+/D− and ground, after primary ESD diode array. Use Value: With 10.2 V VWM, it remains inactive during normal 3.3 V signaling yet triggers decisively for >15 V ESD events, avoiding signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | 400 W PPPM, SMA package (larger footprint), same VWM/VC specs | Limited to lower-energy surge environments; less suitable for IEC 61000-4-5 Level 4 | Select when board space allows larger package and 400 W rating suffices. |
| 1.5KE12CA | Through-hole TO-218, 1500 W PPPM, higher thermal mass but incompatible with SMT | Used in legacy power supply or AC mains protection; not viable for dense PCB layouts | Choose only for through-hole designs requiring higher single-pulse energy handling. |
Compared with SMAJ12CA and 1.5KE12CA, the P6SMB12CAHM3/H delivers optimal balance of 600 W surge capacity, SMB footprint efficiency, and AEC-Q101 qualification - making it the preferred choice for new automotive and industrial SMT designs requiring validated reliability and compact layout.
Availability
P6SMB12CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer USB/UART protection requiring stable component supply and halogen-free compliance.
Supply support for P6SMB12CAHM3/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 passive components with emphasis on reliability, precision, and application-specific performance.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems - delivering consistent clamping behavior, AEC-Q101 validation, and optimized SMT manufacturability.
FAQ
What does the "CA" suffix indicate in P6SMB12CAHM3/H?
The "CA" suffix denotes a bidirectional configuration: the P6SMB12CAHM3/H provides symmetrical clamping for both positive and negative transients, with no polarity marking required. This distinguishes it from unidirectional variants (e.g., P6SMB12AHM3/H) that require correct cathode orientation. The CA version is ideal for AC-coupled or floating signal lines where voltage polarity may reverse.
Is P6SMB12CAHM3/H qualified for automotive applications?
Yes, P6SMB12CAHM3/H is AEC-Q101 qualified - verified for automotive-grade reliability including temperature cycling, high-temperature reverse bias (HTRB), and ESD testing. The "HM3" suffix confirms halogen-free, RoHS-compliant construction meeting automotive material requirements, and the "H" packaging code indicates 7" tape-and-reel delivery optimized for SMT production.
What is the clamping voltage of P6SMB12CAHM3/H and why does it matter?
The P6SMB12CAHM3/H has a maximum clamping voltage (VC) of 16.7 V at 35.9 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value defines the highest voltage imposed on protected circuitry during a surge event - critical for ensuring downstream ICs (e.g., 16 V-rated transceivers or 3.3 V logic with level shifters) remain within safe operating limits without latch-up or damage.
How does the SMB (DO-214AA) package of P6SMB12CAHM3/H compare to SMA or SMC alternatives?
The SMB package of P6SMB12CAHM3/H measures 3.94 mm × 2.20 mm - smaller than SMA (4.57 mm × 2.79 mm) and significantly smaller than SMC (7.11 mm × 6.22 mm). This enables higher component density on PCBs while maintaining 600 W surge capability. Unlike SMAJ or SMCJ series, the P6SMB12CAHM3/H achieves comparable power rating in a footprint ~40% smaller than SMA and ~75% smaller than SMC.
What is the meaning of the "HM3" and "H" in P6SMB12CAHM3/H?
In P6SMB12CAHM3/H, "HM3" indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "H" specifies the packaging format - 7-inch diameter plastic tape-and-reel containing 750 units. This ordering code ensures traceable, production-ready delivery aligned with Vishay's automotive and industrial logistics standards.
P6SMB12CAHM3/H 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- 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)
P6SMB12CAHM3/H FAQ
1.How can I place an order for P6SMB12CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CAHM3/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 P6SMB12CAHM3/H reliable?
The price and inventory of P6SMB12CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB12CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CAHM3/H?
P6SMB12CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CAHM3/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 P6SMB12CAHM3/H?
For technical support, including P6SMB12CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CAHM3/H requirements.
6.How does Aetrix verify that P6SMB12CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB12CAHM3/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 P6SMB12CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB12CAHM3/H?
All P6SMB12CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CAHM3/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 P6SMB12CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB12CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12CAHM3/H Tags
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