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Vishay General Semiconductor - Diodes Division P6SMB120AHE3/5B
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- Part No.:
- P6SMB120AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120AHE3/5B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,255
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Product details
Overview
P6SMB120AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 120 V standoff voltage (VWM), 137 V maximum clamping voltage at 3.6 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform. It is AEC-Q101 qualified and RoHS-compliant, targeting automotive and industrial electronics protection.
For engineers reviewing the P6SMB120AHE3/5B datasheet, P6SMB120AHE3/5B pinout, P6SMB120AHE3/5B application, or P6SMB120AHE3/5B equivalent, key selection criteria include its unidirectional polarity, SMB (DO-214AA) package, 102 V minimum breakdown voltage, 150 °C max junction temperature, and suitability for inductive load switching surge suppression in automotive ECUs and sensor interfaces.
Technical Context
The P6SMB120AHE3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (114–126 V at 1 mA test current). Its low incremental surge resistance and fast response time ensure effective clamping of transient energy before downstream components are damaged.
It is rated for 600 W peak pulse power under standardized 10/1000 μs waveform conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature without forced cooling on standard PCB pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 137 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capacity per IEC 61000-4-5 compliant surge events. |
| TJ max. | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with automated placement and reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line | Provides low VF path during fault conditions; must be tied to ground or return rail in unidirectional configuration. |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential line | Defines polarity-sensitive clamping direction; connects to supply or signal line requiring overvoltage protection. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating on standard PCB layouts. |
| Glass passivated chip junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for automotive under-hood use. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without preconditioning; eliminates moisture-related popcorning risk. |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns), enhancing protection margin for sensitive MOSFETs and microcontrollers. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protection of 12 V supply rail against load dump and alternator ripple transients in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and LDO input to clamp spikes up to 137 V. Use Value: Prevents latch-up or permanent damage to MCU power rails during ISO 7637-2 Pulse 5a (load dump) events. |
Use Scenario: Surge suppression on 24 V digital input channels receiving signals from field sensors and switches in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS on each optocoupler input to absorb inductive kickback from solenoid drivers. Use Value: Maintains signal integrity and prevents false triggering during repetitive 10/1000 μs transients induced by relay coil de-energization. |
| Automotive Camera Sensor Interface | Telecom Base Station Power Supply |
|
Use Scenario: Reverse polarity and ESD/transient protection on FAKRA or coaxial video lines feeding rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Unidirectional TVS on power line to image sensor ASIC, with cathode tied to +12 V rail. Use Value: Limits clamping voltage to 137 V while preserving low capacitance (<100 pF), avoiding signal distortion on high-speed analog video paths. |
Use Scenario: Secondary-side overvoltage protection on -48 V telecom rectifier outputs feeding distributed amplifiers and RF modules. IC Role / Device Role / Timing Role: Clamping device across output capacitor to suppress ringing and lightning-induced surges. Use Value: Absorbs 600 W transient energy without failure, ensuring uninterrupted operation during Telcordia GR-1089 Class B surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/5B | Same VWM (102 V), identical SMB package, but lower PPPM (400 W) and higher VC (156 V at 2.6 A). | Not AEC-Q101 qualified; suitable for commercial/industrial use only. | Select when automotive qualification is unnecessary and cost sensitivity outweighs peak power margin. |
| 1.5SMC120A | Same VWM and VC specs, but larger SMC (DO-214AB) package (0.285" × 0.175"); higher thermal mass but incompatible with dense SMB footprints. | Higher IFSM (200 A vs. 100 A); better for high-repetition surge environments. | Choose only if board layout allows SMC footprint and higher surge repetition rate is required. |
Compared with SMAJ120A-E3/5B and 1.5SMC120A, the P6SMB120AHE3/5B uniquely combines AEC-Q101 qualification, 600 W surge rating, and SMB footprint-making it the only drop-in solution for space-constrained automotive designs requiring validated reliability.
Availability
P6SMB120AHE3/5B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, telecom power rail safeguarding, and camera sensor interface hardening requiring stable component supply and full traceability.
Supply support for P6SMB120AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P6SMB Series targets high-energy transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low-profile surface-mount compatibility, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the P6SMB120AHE3/5B under standard surge conditions?
The P6SMB120AHE3/5B has a maximum clamping voltage (VC) of 137 V at a peak pulse current (IPPM) of 3.6 A, measured using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events. The P6SMB120AHE3/5B maintains this clamping performance due to its low incremental surge resistance and stable avalanche characteristics.
Is the P6SMB120AHE3/5B suitable for automotive applications?
Yes, the P6SMB120AHE3/5B is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024, Doc. #88370). It meets automotive reliability requirements including temperature cycling, mechanical shock, and humidity bias testing. The P6SMB120AHE3/5B is routinely deployed in engine control units, body control modules, and ADAS camera power supplies where sustained operation at 150 °C junction temperature is required.
What does the "HE3/5B" suffix indicate in P6SMB120AHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This differs from "52" (7-inch reel, 750 units) and confirms the part meets automotive-grade material and reliability standards. The P6SMB120AHE3/5B is not interchangeable with non-HE3 variants in automotive production due to missing qualification evidence.
How does the P6SMB120AHE3/5B compare to bidirectional TVS diodes like P6SMB120CA?
The P6SMB120AHE3/5B is unidirectional and conducts only in reverse bias above 114–126 V, making it ideal for DC power rail protection with defined polarity. In contrast, P6SMB120CA is bidirectional and clamps symmetrically in both directions-suited for AC lines or differential signal pairs. The P6SMB120AHE3/5B offers lower leakage (<1 μA at 102 V) and avoids ambiguity in grounding schemes where polarity is fixed, unlike the CA variant which exhibits identical behavior in either orientation.
What is the thermal resistance of the P6SMB120AHE3/5B, and how does it affect PCB layout?
The P6SMB120AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads. To maintain safe operation below 150 °C junction temperature during repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks near the SMB footprint. The P6SMB120AHE3/5B does not require heatsinking but benefits from thermal vias under pads in high-duty-cycle applications.
P6SMB120AHE3/5B 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:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB120AHE3/5B FAQ
1.How can I place an order for P6SMB120AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120AHE3/5B 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 P6SMB120AHE3/5B reliable?
The price and inventory of P6SMB120AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB120AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120AHE3/5B?
P6SMB120AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120AHE3/5B 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 P6SMB120AHE3/5B?
For technical support, including P6SMB120AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120AHE3/5B requirements.
6.How does Aetrix verify that P6SMB120AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB120AHE3/5B 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 P6SMB120AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB120AHE3/5B?
All P6SMB120AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120AHE3/5B, 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 P6SMB120AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB120AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120AHE3/5B Tags
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