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Vishay General Semiconductor - Diodes Division P6SMB120CAHE3/5B
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- Part No.:
- P6SMB120CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CAHE3/5B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,889
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Product details
Overview
P6SMB120CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 120 V standoff voltage (VWM), 165 V clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects sensitive ICs, MOSFETs, and sensor signal lines against inductive switching transients and lightning-induced surges in industrial and automotive electronics.
For engineers reviewing the P6SMB120CAHE3/5B datasheet, P6SMB120CAHE3/5B pinout, P6SMB120CAHE3/5B application, or P6SMB120CAHE3/5B equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust transient immunity without layout redesign.
Technical Context
The P6SMB120CAHE3/5B operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±120 V in both polarities. Its breakdown voltage (VBR) is specified at 114–126 V (min/max) with 1 mA test current, and it exhibits a temperature coefficient of +0.107 %/°C - enabling predictable performance across -65 °C to +150 °C junction temperature range.
Designed for surface-mount assembly on standard 0.2" × 0.2" copper pads, it achieves 600 W peak pulse power handling under repetitive 0.01% duty cycle conditions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low capacitance, while matte tin-plated leads comply with J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 120 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for protected circuitry. |
| VBR (Breakdown) | 114–126 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering within design tolerance. |
| VC (Clamping) | 165 V at IPPM = 3.6 A - Peak voltage seen by downstream components during 10/1000 μs transient; determines protection margin. |
| PPPM | 600 W - Sustained transient energy absorption capability per IEC 61000-4-5 compliant waveform. |
| ID (Leakage) | <1.0 μA at 120 V - Minimal DC loading on signal/power lines during normal operation. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD footprint compatible with automated placement and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode/anode terminals are symmetrical and interchangeable for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on transient polarity; no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when mounted per recommended pad layout. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; supports high-volume manufacturing. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal stress and humidity exposure. |
| Low clamping ratio (VC/VWM = 1.375) | Minimizes overvoltage stress on protected devices compared to higher-ratio TVS diodes. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2/5a conditions while meeting AEC-Q101 qualification for production deployment. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppression element across input terminals, coordinated with upstream fusing and filtering. Use Value: Enables >100,000 actuation cycles without parameter drift due to low incremental surge resistance and stable VBR temperature coefficient. |
| Telecom Power Line Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Clamping induced transients on 48 V PoE-powered Ethernet interfaces and base station power rails exposed to lightning coupling. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after primary GDT/MOV stages to limit let-through voltage to safe levels for DC-DC converters. Use Value: 165 V clamping voltage ensures downstream 50 V-rated regulators remain within absolute maximum ratings during combined surge events. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to absorb inductive kickback energy during PWM switching. Use Value: 600 W rating handles repeated 10/1000 μs pulses from motor startup/stall without thermal runaway or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120CA | Same VWM (120 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without derating. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with RθJA = 140 °C/W. |
| 1.5KE120CA | Through-hole TO-204AE (DO-201AE) package, same VWM/VC, higher IFSM (200 A), but not AEC-Q101 qualified. | Requires manual or wave soldering; lacks automotive qualification and MSL Level 1 compliance. | Choose for legacy through-hole designs or cost-sensitive non-automotive applications where reflow compatibility is not required. |
Compared with SMAJ120CA and 1.5KE120CA, the P6SMB120CAHE3/5B uniquely combines AEC-Q101 qualification, 600 W surge capacity, SMB footprint, and MSL Level 1 - making it the only drop-in option for new automotive and high-reliability industrial SMT designs requiring validated long-term robustness.
Availability
P6SMB120CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom power line protection, and consumer appliance motor drive circuits requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P6SMB120CAHE3/5B 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 leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained, high-volume applications - engineered for automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the P6SMB120CAHE3/5B under standard test conditions?
The P6SMB120CAHE3/5B has a maximum clamping voltage (VC) of 165 V at a peak pulse current (IPPM) of 3.6 A, measured using the 10/1000 μs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB120CAHE3/5B maintains this clamping performance with low incremental surge resistance, ensuring minimal overshoot beyond VC.
Is the P6SMB120CAHE3/5B suitable for automotive applications?
Yes, the P6SMB120CAHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix and revision "B" code. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - confirming suitability for engine control units, body electronics, and ADAS sensor interfaces. The P6SMB120CAHE3/5B also complies with MSL Level 1, supporting lead-free reflow without pre-bake.
How does the bidirectional configuration of the P6SMB120CAHE3/5B affect its circuit implementation?
The P6SMB120CAHE3/5B is inherently bidirectional, meaning it clamps symmetrically for both positive and negative transients without requiring polarity orientation during placement. This eliminates the need for cathode band alignment and simplifies layout on differential or AC-coupled lines such as CAN bus, RS-485, or transformer-isolated power inputs. The P6SMB120CAHE3/5B's unmarked SMB package reflects this symmetry, reducing assembly errors and enabling direct replacement of unidirectional variants in revised designs.
What is the thermal resistance of the P6SMB120CAHE3/5B, and how does it impact power dissipation?
The P6SMB120CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per JEDEC standards. At its rated 5.0 W steady-state power dissipation (PD), this yields a ~500 °C junction rise above ambient - which is why PD applies only with infinite heatsink assumptions. In practice, the P6SMB120CAHE3/5B relies on short-duration 600 W pulse handling rather than continuous dissipation; its RθJA confirms suitability for standard FR-4 PCB layouts without added thermal vias.
Does the P6SMB120CAHE3/5B require external current limiting or series impedance?
No, the P6SMB120CAHE3/5B operates as a self-limiting voltage clamp and does not require external series resistors or current-limiting components for basic transient suppression. Its low dynamic impedance ensures rapid voltage stabilization during surges. However, for sustained overvoltage conditions exceeding its power rating, coordination with upstream fuses or PTCs is recommended. The P6SMB120CAHE3/5B's design assumes proper PCB pad layout per Vishay's 0.2" × 0.2" copper recommendation to maintain specified PPPM and thermal performance.
P6SMB120CAHE3/5B 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB120CAHE3/5B FAQ
1.How can I place an order for P6SMB120CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CAHE3/5B 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 P6SMB120CAHE3/5B reliable?
The price and inventory of P6SMB120CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB120CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CAHE3/5B?
P6SMB120CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CAHE3/5B 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 P6SMB120CAHE3/5B?
For technical support, including P6SMB120CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB120CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB120CAHE3/5B 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 P6SMB120CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB120CAHE3/5B?
All P6SMB120CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CAHE3/5B, 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 P6SMB120CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB120CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CAHE3/5B Tags
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