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Vishay General Semiconductor - Diodes Division P6SMB120CAHE3_B/I
- Part No.:
- P6SMB120CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CAHE3_B/I.pdf
- Description:
- 600W,120V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,092
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Product details
Overview
P6SMB120CAHE3_B/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 120 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 4.4 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB120CAHE3_B/I datasheet, P6SMB120CAHE3_B/I pinout, P6SMB120CAHE3_B/I application, or P6SMB120CAHE3_B/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for PCB-level surge protection design.
Technical Context
The P6SMB120CAHE3_B/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its breakdown voltage (VBR) is specified at 114–126 V (min/max) with 1 mA test current, and it exhibits low incremental surge resistance to maintain stable clamping under fast-rising transients.
It is rated for repetitive 10/1000 μs surges at 0.01 % duty cycle, derated above TA = 25 °C per Fig. 2, and supports operating junction temperatures from –65 °C to +150 °C. The device meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 114–126 V at IT = 1 mA - Confirmed avalanche conduction threshold; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 137 V at IPPM = 4.4 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Enables reliable operation in under-hood automotive or high-ambient industrial environments. |
| RθJA | 100 °C/W - Thermal performance baseline for PCB pad layout design; requires minimum 0.2" × 0.2" copper pads per terminal. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Transient return path (bidirectional) | Provides low-impedance path to ground or rail during positive or negative voltage excursions. |
| Cathode (Terminal 2) | Transient return path (bidirectional) | Electrically identical to Anode; no functional distinction due to symmetrical construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body control, and ADAS modules requiring extended temperature and life-cycle compliance. |
| 600 W 10/1000 μs rating | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment and telecom infrastructure interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT assembly logistics. |
| Glass passivated junction | Ensures stable leakage and breakdown characteristics across temperature and long-term operation. |
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 clamping element placed directly at connector interface or IC input pins. Use Value: Limits transient voltage to ≤137 V, preventing latch-up or gate oxide damage in 12 V/24 V automotive systems. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against ESD and surge events in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal traces before optocoupler or level-shifter inputs. Use Value: Withstands repeated 600 W surges while maintaining sub-μA leakage, preserving signal fidelity and system uptime. |
| Telecom Line Interface Protection | Consumer Power Adapter Surge Clamping |
|
Use Scenario: Shielding Ethernet PHY, RS-485, or DSL line drivers from lightning-induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: First-stage transient suppressor on differential pair or supply rail prior to isolation barrier. Use Value: Fast response (<1 ns) and symmetric clamping ensure balanced protection without skew or common-mode disruption. |
Use Scenario: Adding secondary surge suppression on DC output rails of wall adapters and USB PD chargers after primary MOV stage. IC Role / Device Role / Timing Role: Precision clamping device limiting residual overshoot to protect downstream USB-C controller ICs. Use Value: Tight VBR tolerance (±5 %) and low VC enable compliance with UL 62368-1 transient limits for end-user safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120CA | Same VWM (102 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; less suitable for IEC 61000-4-5 Level 4 or automotive load dump. | Choose when board space is constrained and surge energy is <400 W. |
| SMCJ120CA | Same VWM (102 V), higher PPPM (1500 W); larger SMC (DO-214AB) package with lower RθJA (50 °C/W). | Better thermal performance and surge margin; requires larger PCB area and different pad layout. | Choose for high-reliability industrial or railway applications demanding >1 kW surge headroom. |
Compared with SMAJ120CA and SMCJ120CA, the P6SMB120CAHE3_B/I delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, and SMB footprint - making it ideal for space-constrained automotive and industrial designs where 1 kW+ clamping is unnecessary but automotive-grade validation is required.
Availability
P6SMB120CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer power adapter designs requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for P6SMB120CAHE3_B/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, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive yet robust transient protection needs across automotive, industrial, and telecom markets - delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 and RoHS options.
FAQ
What does the "CA" suffix indicate in P6SMB120CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration: the P6SMB120CAHE3_B/I clamps voltage transients equally in both polarities, with no cathode band marking and symmetrical electrical characteristics. This makes it suitable for AC-coupled lines, differential buses, or floating nodes where polarity cannot be guaranteed - unlike unidirectional "A" variants that require correct orientation.
Is P6SMB120CAHE3_B/I qualified for automotive use?
Yes, P6SMB120CAHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3_B" suffix per Vishay's ordering table. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life - meeting requirements for under-hood and cabin electronics in passenger vehicles and commercial vehicles.
What is the maximum clamping voltage of P6SMB120CAHE3_B/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB120CAHE3_B/I is 137 V, measured at a peak pulse current (IPPM) of 4.4 A with a 10/1000 μs waveform. This value represents the highest voltage the device allows across its terminals during a standardized surge event - critical for ensuring protected ICs remain within absolute maximum ratings.
How does the SMB (DO-214AA) package of P6SMB120CAHE3_B/I compare to SMA or SMC packages?
The SMB package of P6SMB120CAHE3_B/I offers a 5.59 mm × 4.06 mm footprint - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). It provides 600 W surge capability with moderate thermal resistance (RθJA = 100 °C/W), striking a balance between board space, power handling, and manufacturability for mid-tier protection requirements.
Does P6SMB120CAHE3_B/I require special PCB layout considerations?
Yes - Vishay specifies mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated thermal and surge performance. Narrow traces or insufficient copper reduce heat dissipation and increase clamping voltage during sustained surges; thermal relief should be avoided on these pads to maintain low RθJA.
P6SMB120CAHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- 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)
P6SMB120CAHE3_B/I FAQ
1.How can I place an order for P6SMB120CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CAHE3_B/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 P6SMB120CAHE3_B/I reliable?
The price and inventory of P6SMB120CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB120CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CAHE3_B/I?
P6SMB120CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CAHE3_B/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 P6SMB120CAHE3_B/I?
For technical support, including P6SMB120CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB120CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB120CAHE3_B/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 P6SMB120CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB120CAHE3_B/I?
All P6SMB120CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CAHE3_B/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 P6SMB120CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB120CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CAHE3_B/I Tags
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