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Vishay General Semiconductor - Diodes Division P6SMB12CAHE3/5B
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- Part No.:
- P6SMB12CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CAHE3/5B.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,752
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Product details
Overview
P6SMB12CAHE3/5B 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. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P6SMB12CAHE3/5B datasheet, P6SMB12CAHE3/5B pinout, P6SMB12CAHE3/5B application, or P6SMB12CAHE3/5B equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, and thermal derating behavior above 25 °C ambient.
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 characteristics and low leakage (<5 μA at 10.2 V), while the low incremental surge resistance supports consistent clamping under repetitive transient events.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its fast response time - sub-nanosecond - allows effective suppression of ESD and inductive switching spikes before sensitive downstream components are stressed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 10.2 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| Breakdown Voltage (VBR) | 11.4 V min / 12.6 V max at 1 mA - Voltage at which device enters avalanche region; ensures predictable turn-on across production lot. |
| Clamping Voltage (VC) | 16.7 V at 35.9 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient; determines stress level on downstream ICs. |
| Peak Pulse Power (PPPM) | 600 W - Sustained energy-handling capacity per IEC 61000-4-5 waveform; enables robust protection against lightning surges and load dump. |
| Junction Temperature Range | -65 °C to +150 °C - Specifies full operational envelope including automotive under-hood environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow soldering. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules per stress test requirements including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; bidirectional conduction enables protection of AC or floating nodes without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity testing without external derating. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS sensor interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current over temperature and lifetime. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt transients before reaching signal conditioning amplifier or microcontroller ADC input. Use Value: Maintains signal integrity during 12 V system load dump events (up to 100 V, 400 ms) by limiting voltage to ≤16.7 V at 35.9 A, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Primary transient suppressor on each isolated input channel, mounted adjacent to optocoupler or Schmitt trigger input stage. Use Value: Clamps 1 kV/500 A surge (10/1000 μs) to <17 V within <1 ns, ensuring reliable operation of industrial-rated input buffers without false triggering. |
| Consumer Appliance Motor Drive Protection | Telecom Line Interface Protection |
Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart appliance motor control boards from brush-commutator noise and inductive kickback. IC Role / Device Role / Timing Role: Localized TVS on half-bridge driver supply rails and feedback sensing nodes to absorb sub-microsecond switching spikes. Use Value: Limits transient overshoot to ≤16.7 V during 600 W pulse events, preserving MOSFET gate oxide integrity and preventing MCU reset from supply rail disturbance. |
Use Scenario: Protecting Ethernet PHY or RS-485 transceiver pins in networked building automation equipment from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: First-line defense on differential data lines, placed before common-mode chokes and isolation transformers. Use Value: Symmetrical clamping ensures balanced suppression on both line polarities, maintaining signal common-mode rejection while holding differential swing within transceiver tolerance. |
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 (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary. |
| 1.5KE12CA | 1500 W PPPM, DO-201 package (through-hole), higher capacitance (~100 pF) | Better for high-energy surges but incompatible with SMT-only assembly; unsuitable for high-frequency signal lines | Choose for legacy through-hole designs requiring higher surge margin and where layout permits larger footprint. |
Compared with SMAJ12CA and 1.5KE12CA, P6SMB12CAHE3/5B delivers balanced surge robustness (600 W), AEC-Q101 compliance, and SMB package manufacturability - making it optimal for new automotive and industrial SMT designs where reliability, assembly yield, and standardized footprint matter.
Availability
P6SMB12CAHE3/5B is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and consumer appliance motor control systems requiring stable component supply with guaranteed AEC-Q101 qualification and traceable sourcing.
Supply support for P6SMB12CAHE3/5B 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 supplier of discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturing consistency.
The P6SMB Series targets cost-sensitive yet mission-critical transient suppression needs in automotive, industrial, and telecom infrastructure - delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 options.
FAQ
What does the "CA" suffix indicate in P6SMB12CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration: P6SMB12CAHE3/5B conducts and clamps symmetrically in both directions, making it suitable for AC signal lines, differential buses, or ungrounded circuits where polarity cannot be assumed. This differs from unidirectional variants (e.g., P6SMB12A) that require correct cathode orientation.
Is P6SMB12CAHE3/5B suitable for protecting USB or high-speed data lines?
No - P6SMB12CAHE3/5B has typical junction capacitance >1000 pF at zero bias, which would severely degrade signal integrity on USB 2.0 or higher-speed interfaces. It is intended for lower-frequency power rails, sensor analog outputs, and digital I/O up to ~1 MHz. For high-speed data lines, use low-capacitance TVS arrays like Vishay's USBxx series.
How does the HE3 suffix affect P6SMB12CAHE3/5B's compliance and qualification?
The "HE3" suffix indicates RoHS-compliant construction and AEC-Q101 qualification - confirming that P6SMB12CAHE3/5B meets automotive-grade stress testing requirements including temperature cycling, high-temperature reverse bias, and ESD. This distinguishes it from commercial-grade E3 or M3 variants lacking automotive validation.
What is the maximum allowable PCB pad size for optimal thermal performance of P6SMB12CAHE3/5B?
Vishay specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as the minimum for rated 600 W pulse power handling. Larger pads improve thermal dissipation but do not increase peak pulse rating beyond datasheet limits; exceeding recommended pad dimensions offers diminishing returns unless combined with internal ground planes or thermal vias.
Can P6SMB12CAHE3/5B replace P6SMB12A in an existing design?
Only if polarity independence is acceptable and circuit topology allows bidirectional clamping. P6SMB12CAHE3/5B lacks a cathode band marking and clamps equally in both directions, whereas P6SMB12A is unidirectional and requires correct orientation. Swapping may cause unintended conduction in DC-biased paths - verify schematic node biasing before substitution.
P6SMB12CAHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB12CAHE3/5B FAQ
1.How can I place an order for P6SMB12CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CAHE3/5B 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 P6SMB12CAHE3/5B reliable?
The price and inventory of P6SMB12CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB12CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CAHE3/5B?
P6SMB12CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CAHE3/5B 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 P6SMB12CAHE3/5B?
For technical support, including P6SMB12CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB12CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB12CAHE3/5B 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 P6SMB12CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB12CAHE3/5B?
All P6SMB12CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CAHE3/5B, 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 P6SMB12CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB12CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12CAHE3/5B Tags
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