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Vishay General Semiconductor - Diodes Division P6SMB120CAHE3/52
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- Part No.:
- P6SMB120CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CAHE3/52.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,193
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Product details
Overview
P6SMB120CAHE3/52 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 maximum clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with a 10/1000 μs waveform. It protects sensitive signal lines and power rails in automotive, industrial, and telecom systems against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the P6SMB120CAHE3/52 datasheet, P6SMB120CAHE3/52 pinout, P6SMB120CAHE3/52 application, or P6SMB120CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This device operates as a voltage-clamped shunt protector: when reverse (or forward, in bidirectional mode) transient voltage exceeds the breakdown threshold (~137 V min, ~152 V max at 1 mA), it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at 102 V).
Designed for unclamped transient suppression, it delivers fast response time (<1 ns), low clamping ratio (VC/VWM ≈ 1.38), and thermal stability via 20 °C/W junction-to-lead thermal resistance. The SMB package supports 0.01% duty cycle repetitive surges with derating above 25 °C ambient per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 165 V at 3.6 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; determines system overvoltage margin. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capacity under standardized 10/1000 μs waveform; enables robust protection against IEC 61000-4-5 Level 4 events. |
| TJ max | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with J-STD-020 MSL level 1 reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated. Bidirectional construction has no polarity marking; both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal serves as current entry/exit point during bidirectional clamping; no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns. |
| 600 W peak pulse power | Supports high-energy surge immunity per IEC 61000-4-5 (4 kV line-to-line, 2 kV line-to-ground) without degradation. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control units, ADAS sensors, and infotainment interfaces. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage stress on protected ICs such as CAN transceivers or microcontrollers during surge events. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed at connector interface to clamp transients before they reach signal conditioning amplifier or ADC input. Use Value: Maintains signal integrity under 12 V/24 V system surges up to ±100 V; AEC-Q101 qualification ensures long-term reliability in thermal cycling environments. |
Use Scenario: Safeguarding 24 V DC digital inputs on programmable logic controller (PLC) modules subjected to relay coil flyback and field wiring faults. IC Role / Device Role / Timing Role: Primary overvoltage clamp on discrete input channel, mounted directly at terminal block entry point. Use Value: Limits transient voltage to ≤165 V during 600 W surges, preventing latch-up or damage to optocoupler input stages and microcontroller GPIOs. |
| Telecom Line Interface Protection | Consumer Power Supply Input Protection |
Use Scenario: Shielding RS-485 transceiver bus lines in base station equipment from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) referenced to ground, providing symmetrical clamping for differential signaling. Use Value: Clamps ±165 V peaks within <1 ns, preserving data integrity across 10 Mbps links while surviving repeated 10/1000 μs surges. |
Use Scenario: Secondary-side transient suppression on 12 V output rail of wall-mounted AC/DC adapters used in smart home hubs and audio devices. IC Role / Device Role / Timing Role: Final-stage TVS placed after DC-DC converter output filter to suppress residual switching noise and external coupling. Use Value: Prevents overvoltage shutdown or component overstress during hot-plug events or capacitor discharge transients, enhancing end-product 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), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 150 °C/W) | Limited to lower-energy surges; less suitable for automotive load dump where 600 W rating is required. | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 2. |
| 1.5KE120CA | Through-hole TO-218 package, same VWM/VC ratings, but larger size and manual assembly requirement | Used in legacy industrial power supplies where SMT is not feasible or thermal mass requirements exceed SMB capability. | Choose only when through-hole mounting is mandated or when higher thermal mass improves long-duration surge handling. |
Compared with SMAJ120CA and 1.5KE120CA, P6SMB120CAHE3/52 offers optimal balance of 600 W surge capacity, AEC-Q101 qualification, and SMB surface-mount compatibility-making it preferred for new automotive and high-reliability industrial designs requiring automated assembly and validated automotive stress performance.
Availability
P6SMB120CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer power supply outputs requiring stable component supply, AEC-Q101 compliance, and repeatable SMT manufacturability.
Supply support for P6SMB120CAHE3/52 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 validation.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and communications infrastructure, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 and RoHS-compliant variants.
FAQ
What is the clamping voltage of P6SMB120CAHE3/52 at its rated peak pulse current?
The P6SMB120CAHE3/52 has a maximum clamping voltage (VC) of 165 V at 3.6 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across its operating temperature range due to low temperature coefficient of VBR (0.107 %/°C).
Is P6SMB120CAHE3/52 suitable for automotive applications?
Yes, P6SMB120CAHE3/52 is AEC-Q101 qualified (indicated by the HE3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD per automotive standards. It is explicitly designed for use in engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical. Its 150 °C maximum junction temperature and MSL Level 1 rating further support automotive manufacturing and field operation.
How does the bidirectional configuration of P6SMB120CAHE3/52 affect its usage compared to unidirectional variants?
The CA suffix in P6SMB120CAHE3/52 denotes bidirectional construction, meaning it provides symmetrical clamping for both positive and negative transients without polarity constraints. Unlike unidirectional versions (e.g., P6SMB120AHE3/52), it requires no cathode marking and can protect AC-coupled signals, differential buses (e.g., RS-485), or floating power domains. Electrical characteristics-including VWM, VBR, and VC-apply identically in both directions, simplifying layout and eliminating orientation errors during assembly.
What is the thermal resistance profile of P6SMB120CAHE3/52, and how does it impact PCB layout?
P6SMB120CAHE3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and avoid excessive trace length between the device and ground/power planes. Derating curves in the datasheet (Fig. 2) require adjusting IPPM based on ambient temperature above 25 °C.
Can P6SMB120CAHE3/52 be used in place of older P6SMB120AHE3/52 in existing designs?
No direct substitution is recommended without validation: P6SMB120CAHE3/52 is bidirectional, whereas P6SMB120AHE3/52 is unidirectional with cathode marking and asymmetric forward conduction. Replacing one with the other may cause unintended forward conduction paths or fail to clamp negative transients. If upgrading to bidirectional protection, verify that system grounding, signal referencing, and surge directionality align with CA-series behavior-and confirm clamping voltage margins remain acceptable for downstream components.
P6SMB120CAHE3/52 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)
P6SMB120CAHE3/52 FAQ
1.How can I place an order for P6SMB120CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CAHE3/52 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 P6SMB120CAHE3/52 reliable?
The price and inventory of P6SMB120CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB120CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CAHE3/52?
P6SMB120CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CAHE3/52 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 P6SMB120CAHE3/52?
For technical support, including P6SMB120CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB120CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB120CAHE3/52 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 P6SMB120CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB120CAHE3/52?
All P6SMB120CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CAHE3/52, 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 P6SMB120CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB120CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CAHE3/52 Tags
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