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Vishay General Semiconductor - Diodes Division P6SMB120CA-E3/5B
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- Part No.:
- P6SMB120CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CA-E3/5B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,085
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Product details
Overview
P6SMB120CA-E3/5B 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 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 P6SMB120CA-E3/5B datasheet, P6SMB120CA-E3/5B pinout, P6SMB120CA-E3/5B application, or P6SMB120CA-E3/5B equivalent, key selection criteria include bidirectional clamping behavior, 165 V VC under 3.6 A surge, RoHS-compliant matte tin plating, MSL Level 1 reflow compatibility (260 °C peak), and AEC-Q101 qualification availability via HE3/HM3 variants.
Technical Context
The P6SMB120CA-E3/5B operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 102 V), while its low incremental surge resistance enables rapid energy diversion during fast-rising transients.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers repeatable 600 W pulse handling at 0.01% duty cycle and maintains thermal stability up to 150 °C junction temperature, with RθJA = 100 °C/W and RθJL = 20 °C/W enabling effective heat dissipation in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 165 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during full-rated 10/1000 μs surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability per IEC 61000-4-5; validates robustness against lightning surges. |
| ID (Reverse Leakage) | ≤1.0 μA at 102 V - Minimal standby current; avoids loading of high-impedance sensor or communication lines. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm length and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, rated MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path during positive or negative voltage excursions beyond VBR. |
| Cathode | Transient return path (bidirectional) | Functionally identical to Anode in CA devices; no cathode band marking distinguishes bidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, USB D+/D−) without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements (4 kV line-to-line, 2 kV line-to-ground) in properly designed layouts. |
| Glass passivated junction | Ensures long-term reliability and stable VBR drift <±5% over lifetime, critical for automotive and industrial field deployments. |
| MSL Level 1 rating | Supports lead-free reflow soldering at 260 °C peak without popcorn effect or delamination, eliminating pre-bake requirements. |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU and China RoHS II; matte tin plating eliminates lead and whisker risks in high-reliability assemblies. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Limits voltage to ≤165 V during 3.6 A surge, preserving sensor accuracy and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs subjected to ground bounce and EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Common-mode transient suppressor across A/B bus lines, maintaining signal integrity during 4 kV EFT events. Use Value: Clamps common-mode spikes within 1 ns response time while adding <0.5 pF capacitance, avoiding data rate degradation at 10 Mbps. |
| Telecom Power Rail Protection | Consumer USB Port ESD Guard |
|
Use Scenario: Shielding 12 V DC input rails of VoIP gateways from lightning-induced surges entering via PoE or external power adapters. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converters, coordinated with fuse and MOV for staged protection. Use Value: Absorbs 600 W surge energy without failure, preventing catastrophic rail collapse and ensuring system-level continuity. |
Use Scenario: ESD suppression on USB 2.0 D+ and D− lines in smart speakers and streaming sticks per IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to divert ESD current away from PHY transceiver. Use Value: Delivers sub-1 ns response and <1.0 μA leakage at 102 V, preserving signal rise time and minimizing standby power loss. |
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 (102 V), lower PPPM (400 W), larger SMA package (DO-214AC), higher RθJA (150 °C/W) | Limited to lower-energy transients; less suitable for IEC 61000-4-5 compliance in compact designs | Select when cost sensitivity outweighs surge margin and board space is not constrained. |
| SMCJ120CA | Same VWM (102 V), higher PPPM (1500 W), larger SMC package (DO-214AB), higher IPPM (12.3 A) | Overqualified for 600 W needs; requires larger pad layout and increases BOM cost | Choose only when legacy designs mandate SMC footprint or future-proofing against >1 kV surges is required. |
Compared with SMAJ120CA and SMCJ120CA, the P6SMB120CA-E3/5B delivers optimal balance of 600 W surge rating, SMB footprint efficiency, and MSL Level 1 process compatibility-making it the preferred choice for new automotive and industrial designs where board area and reflow yield are critical.
Availability
P6SMB120CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom power rail protection requiring stable component supply, consistent RoHS compliance, and traceable lot-level documentation.
Supply support for P6SMB120CA-E3/5B 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, precision, and automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in space-constrained applications, with design focus on AEC-Q101 qualification, low-profile SMB packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the P6SMB120CA-E3/5B at its rated peak pulse current?
The P6SMB120CA-E3/5B has a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current (IPPM) of 3.6 A using a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88370) and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB120CA-E3/5B maintains this clamping performance across its specified operating temperature range.
Is the P6SMB120CA-E3/5B suitable for automotive applications?
The P6SMB120CA-E3/5B itself is RoHS-compliant and commercial-grade; however, the P6SMB120CA-HE3 variant (with HE3 suffix) is explicitly AEC-Q101 qualified for automotive use. While the P6SMB120CA-E3/5B shares identical electrical characteristics and SMB package, it lacks the extended reliability testing required for under-hood deployment. For automotive designs, specify P6SMB120CA-HE3_B or P6SMB120CA-HM3_B to ensure qualification compliance. The P6SMB120CA-E3/5B remains appropriate for non-automotive industrial and telecom applications.
What does the "CA" suffix indicate in P6SMB120CA-E3/5B?
The "CA" suffix in P6SMB120CA-E3/5B denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants (e.g., P6SMB120A), the CA version has no cathode band marking and exhibits identical VBR, VWM, and VC values in either polarity. This makes the P6SMB120CA-E3/5B ideal for protecting AC-coupled signals, differential buses, or floating power domains where polarity reversal may occur.
What is the thermal resistance of the P6SMB120CA-E3/5B, and how does it affect PCB layout?
The P6SMB120CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per datasheet condition. These values require adequate copper pour on both anode and cathode pads to sustain repetitive surge duty cycles. Reducing pad size or omitting thermal vias increases junction temperature, potentially derating IPPM and shortening device life. The P6SMB120CA-E3/5B must be mounted per the recommended pad layout in the Vishay outline drawing to achieve rated thermal performance.
How does the P6SMB120CA-E3/5B compare to the P6SMB120A in terms of functionality and layout?
The P6SMB120CA-E3/5B is bidirectional with no polarity marking, while the P6SMB120A is unidirectional and marked with a cathode band. Both share identical VWM (102 V), VBR (114–126 V), VC (165 V), and PPPM (600 W), but differ in circuit integration: the P6SMB120A requires correct orientation relative to DC bias, whereas the P6SMB120CA-E3/5B can be placed without orientation checks. Layouts for the P6SMB120CA-E3/5B eliminate polarity verification steps in automated assembly and simplify schematic symbol usage for AC or floating nodes. The P6SMB120CA-E3/5B thus reduces manufacturing risk in high-volume production.
P6SMB120CA-E3/5B 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB120CA-E3/5B FAQ
1.How can I place an order for P6SMB120CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CA-E3/5B 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 P6SMB120CA-E3/5B reliable?
The price and inventory of P6SMB120CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB120CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CA-E3/5B?
P6SMB120CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CA-E3/5B 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 P6SMB120CA-E3/5B?
For technical support, including P6SMB120CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB120CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB120CA-E3/5B 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 P6SMB120CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB120CA-E3/5B?
All P6SMB120CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CA-E3/5B, 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 P6SMB120CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB120CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CA-E3/5B Tags
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