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Vishay General Semiconductor - Diodes Division P6SMB12CAHM3_A/I
- Part No.:
- P6SMB12CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CAHM3_A/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,203
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Product details
Overview
P6SMB12CAHM3_A/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 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 rating with 10/1000 μs waveform. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P6SMB12CAHM3_A/I datasheet, P6SMB12CAHM3_A/I pinout, P6SMB12CAHM3_A/I application, or P6SMB12CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance of 100 °C/W junction-to-ambient under standard mounting conditions.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<5.0 μA at 10.2 V), while the low incremental surge resistance supports effective energy diversion during ESD or lightning-induced surges.
The device is rated for repetitive 10/1000 μs pulses at 0.01 % duty cycle and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature. Its 150 °C maximum junction temperature and halogen-free, RoHS-compliant HM3 suffix confirm suitability for automotive-grade production environments requiring long-term reliability and process compatibility.
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 initiation 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 600 W transient; determines downstream component stress. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; defines transient energy absorption capacity. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient air on standard 0.2" × 0.2" copper pads; guides thermal layout design. |
| TJ max. | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in sealed enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; supports OEM compliance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per datasheet fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No polarity marking; symmetrical conduction enables AC line or differential pair protection without orientation constraints. |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Identical electrical role to Anode due to bidirectional structure; terminals are functionally interchangeable in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, or push-pull interfaces without external polarity management. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V supply rails with margin when mounted per spec. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics; eliminates need for additional qualification testing in Tier-1 designs. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs-e.g., 12 V logic interfaces remain within safe 16.7 V ceiling during surge events. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt surge energy before reaching sensitive analog front-end or CAN PHY. Use Value: Prevents latch-up or permanent damage to microcontroller ADC inputs and transceivers during ISO 7637-2 Pulse 5a (load dump) events up to 60 V. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary transient suppressor on dry-contact or optocoupler input side, located upstream of current-limiting resistor and Schmitt trigger. Use Value: Maintains functional safety integrity by limiting input voltage to ≤16.7 V during 1 kV/500 Ω surge tests per IEC 61000-4-5, preventing false triggering or input stage failure. |
| Consumer Power Adapter Output Clamping | Telecom Line Interface Surge Suppression |
Use Scenario: Clamping output rail transients in wall-mounted AC/DC adapters supplying USB-C PD or PoE-powered devices. IC Role / Device Role / Timing Role: Secondary-side TVS across regulated 12 V output, coordinated with primary-side MOV and Y-cap filtering. Use Value: Limits overshoot to 16.7 V during fast line transients (e.g., capacitor discharge), protecting downstream USB PD controller ICs rated for 20 V absolute max. |
Use Scenario: Protecting Ethernet PHY or DSL line driver ICs from lightning-induced surges entering via RJ-45 jacks in residential gateways. IC Role / Device Role / Timing Role: First-stage protector on differential pairs (e.g., TX+/TX−), paired with common-mode chokes and secondary TVS arrays. Use Value: Absorbs >90 % of 10/1000 μs surge energy before it reaches 100BASE-TX magnetics, reducing risk of transformer saturation and PHY latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same VWM (12 V), lower PPPM (400 W), higher RθJA (140 °C/W), non-AEC-Q101 | Limited to commercial-grade consumer or telecom equipment; not suitable for automotive under-hood use. | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary. |
| SMCJ12CA | Same VWM (12 V), higher PPPM (1500 W), larger SMC (DO-214AB) package, AEC-Q101 available (HM3 variant) | Requires larger PCB area; better suited for high-energy industrial motor drives or solar string inverters. | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and board space permits SMC footprint. |
Compared with SMAJ12CA and SMCJ12CA, P6SMB12CAHM3_A/I delivers optimal balance of automotive qualification, 600 W surge capability, and SMB footprint-making it ideal for space-constrained, AEC-Q101–mandated applications where SMC is oversized and SMAJ lacks reliability validation.
Availability
P6SMB12CAHM3_A/I 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 P6SMB12CAHM3_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, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB series was developed specifically for robust, surface-mount transient suppression in automotive and industrial environments-prioritizing AEC-Q101 compliance, low clamping ratios, and consistent performance across temperature and surge repetition rates.
FAQ
What does the "CA" suffix indicate in P6SMB12CAHM3_A/I?
The "CA" suffix in P6SMB12CAHM3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical clamping in both polarities-ideal for protecting AC-coupled signals, differential buses like RS-485, or ungrounded sensor outputs. Unlike unidirectional variants (e.g., P6SMB12AHM3_A/I), P6SMB12CAHM3_A/I has no cathode band marking and functions identically regardless of terminal orientation.
Is P6SMB12CAHM3_A/I suitable for automotive applications?
Yes, P6SMB12CAHM3_A/I is AEC-Q101 qualified (confirmed by HM3 suffix and Vishay documentation), making it suitable for automotive applications including body control modules, ADAS sensor interfaces, and infotainment power supplies. Its 150 °C TJ max, MSL Level 1 rating, and validation across temperature cycling, humidity, and surge stress ensure compliance with OEM reliability requirements.
What is the maximum clamping voltage of P6SMB12CAHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB12CAHM3_A/I is 16.7 V at 35.9 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value represents the highest voltage imposed on the protected circuit during worst-case transient events and is critical for ensuring downstream components-such as 16 V-rated LDOs or 12 V logic ICs-remain within safe operating limits.
How does the SMB (DO-214AA) package of P6SMB12CAHM3_A/I compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB12CAHM3_A/I measures 4.57 mm × 3.94 mm × 2.20 mm-smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). It offers 600 W surge capability in a footprint optimized for automated placement and thermal performance on 5.0 mm × 5.0 mm copper pads, striking a balance between power density and manufacturability that SMA cannot match and SMC exceeds for many compact designs.
Does P6SMB12CAHM3_A/I require derating at elevated ambient temperatures?
Yes, P6SMB12CAHM3_A/I must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Doc. #88370). At 85 °C ambient, its peak pulse power drops to ~420 W (70 % of 600 W), and at 125 °C, it falls to ~240 W (40 %). Designers must apply this derating when sizing for enclosed, high-temperature environments such as engine compartments or sealed industrial enclosures.
P6SMB12CAHM3_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):
- 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_A/I FAQ
1.How can I place an order for P6SMB12CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CAHM3_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 P6SMB12CAHM3_A/I reliable?
The price and inventory of P6SMB12CAHM3_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 P6SMB12CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB12CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CAHM3_A/I?
P6SMB12CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CAHM3_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 P6SMB12CAHM3_A/I?
For technical support, including P6SMB12CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB12CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB12CAHM3_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 P6SMB12CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB12CAHM3_A/I?
All P6SMB12CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CAHM3_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 P6SMB12CAHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB12CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12CAHM3_A/I Tags
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