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Vishay General Semiconductor - Diodes Division P6SMB120A-E3/52
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- Part No.:
- P6SMB120A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120A-E3/52.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,871
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Product details
Overview
P6SMB120A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 120 V breakdown voltage (VBR = 114–126 V at IT = 1 mA), 165 V maximum clamping voltage (VC) at 3.6 A peak pulse current, and 600 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in industrial and telecom power rails.
For engineers reviewing the P6SMB120A-E3/52 datasheet, P6SMB120A-E3/52 pinout, P6SMB120A-E3/52 application, or P6SMB120A-E3/52 equivalent, this part delivers verified unidirectional surge suppression with AEC-Q101 qualification option, RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level ESD and surge resilience validation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 μA reverse leakage at 102 V stand-off (VWM), then rapidly avalanches to clamp transients ≤165 V at 3.6 A. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for automated SMT placement on 5.0 mm × 5.0 mm copper pads, it achieves thermal resistance of 100 °C/W (junction-to-ambient) and supports repetitive 0.01% duty cycle pulses. Polarity is marked by cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA test current - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 102 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 165 V at 3.6 A - clamping voltage during 10/1000 μs transient, limiting downstream stress |
| PPPM | 600 W - peak pulse power handling capability under standardized surge waveform |
| IPPM | 3.6 A - maximum non-repetitive peak pulse current the device safely conducts |
| TJ max | 150 °C - maximum junction temperature enabling operation in high-ambient industrial environments |
| RθJA | 100 °C/W - thermal resistance indicating need for adequate PCB copper area for sustained power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to system ground or lower-potential rail; completes shunt path during reverse transient |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line (e.g., 120 V rail); avalanche initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard layouts |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning, compatible with standard SMT assembly lines |
| RoHS-compliant, matte tin terminations | Eliminates whisker risk and ensures solder joint integrity per JESD 201 Class 2 requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving clamping precision |
Applications
| Industrial Motor Drive Power Rails | Automotive Body Control Module (BCM) Inputs |
|---|---|
|
Use Scenario: Protecting 120 V DC bus inputs from inductive kickback during contactor switching in PLC-controlled motor drives. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and ground, clamping transients within 1 ns to limit MOSFET gate-source stress. Use Value: Clamps to ≤165 V at 3.6 A, preventing damage to 200 V-rated power FETs and maintaining system uptime in factory automation. |
Use Scenario: Safeguarding LIN bus interface inputs in BCMs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply line upstream of LDO regulators, absorbing 600 W pulses without latch-up. Use Value: Withstands 102 V continuous operation and clamps to 165 V, meeting ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
| Telecom Base Station DC Feeds | Consumer Appliance Mainboard Power Inputs |
|
Use Scenario: Surge protection on -48 V DC feed lines entering remote radio units, subject to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to chassis ground, providing primary clamping before secondary filtering stages. Use Value: 600 W rating and 100 °C/W RθJA allow reliable operation in sealed outdoor enclosures up to 70 °C ambient. |
Use Scenario: Input-stage protection on 120 V AC-derived DC rails in smart HVAC controllers subjected to relay bounce and EFT. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA at 102 V) TVS placed after bridge rectifier to avoid standby power loss. Use Value: Maintains <1 μA leakage at rated VWM, preserving energy efficiency while delivering 165 V clamping for EN 61000-4-4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | Same SMB package, identical VBR (114–126 V), but rated for 600 W with tighter VC = 165 V (same), higher IPPM = 3.6 A (same); differs in JEDEC registration and minor process control | No functional difference in clamping performance; validated for same IEC 61000-4-5 use cases | Select when dual-sourcing required across Vishay and ON Semiconductor design-in ecosystems |
| 1.5SMC120A | Larger SMC (DO-214AB) package (7.1 mm × 6.2 mm vs. 4.6 mm × 3.9 mm), same electrical specs (VBR, VC, PPPM), higher thermal mass (RθJA ≈ 60 °C/W) | Better thermal performance under sustained surge repetition, but requires larger PCB footprint | Choose for high-duty-cycle industrial environments where layout space permits larger package |
Compared with SMBJ120A and 1.5SMC120A, P6SMB120A-E3/52 offers identical electrical protection in a smaller SMB footprint and RoHS-compliant matte tin finish optimized for high-volume SMT, making it preferred for space-constrained consumer and telecom designs requiring MSL Level 1 compatibility.
Availability
P6SMB120A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom base station feeds, and consumer appliance power inputs requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB120A-E3/52 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, and protection devices with emphasis on reliability, power efficiency, and AEC-Q101 qualification.
The P6SMB Series targets cost-sensitive, high-volume board-level surge protection across automotive, industrial, and telecom markets, delivering standardized 600 W TVS performance in compact SMB packaging with RoHS and halogen-free options.
FAQ
What is the maximum clamping voltage of the P6SMB120A-E3/52 under a 10/1000 μs surge?
The P6SMB120A-E3/52 has a maximum clamping voltage (VC) of 165 V at 3.6 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB120A-E3/52 maintains this clamping performance across its specified operating temperature range.
Is the P6SMB120A-E3/52 suitable for automotive applications?
The base P6SMB120A-E3/52 is commercial-grade and RoHS-compliant, but not AEC-Q101 qualified. However, Vishay offers the automotive variant P6SMB120AHE3_B, which carries the same electrical characteristics and adds AEC-Q101 qualification. For automotive use, specify the HE3 suffix; the P6SMB120A-E3/52 itself is intended for industrial and telecom applications where automotive qualification is not required.
What is the standoff voltage (VWM) of the P6SMB120A-E3/52, and why does it matter?
The P6SMB120A-E3/52 has a maximum reverse stand-off voltage (VWM) of 102 V, meaning it remains in high-impedance state with <1 μA leakage up to that voltage. This parameter ensures the device does not interfere with normal 120 V DC system operation while remaining ready to avalanche instantly upon overvoltage. Selecting a VWM ≥102 V prevents false triggering and preserves signal integrity in the P6SMB120A-E3/52's target applications.
Does the P6SMB120A-E3/52 have polarity marking, and how is it oriented on PCB?
Yes, the P6SMB120A-E3/52 is unidirectional and features a visible cathode band on the SMB package body. During PCB layout, the banded end must be connected to the line being protected (e.g., 120 V rail), while the anode connects to ground. This orientation ensures proper avalanche conduction during positive transients on the protected line. Incorrect polarity renders the P6SMB120A-E3/52 ineffective for unidirectional surge suppression.
What is the thermal resistance and recommended pad layout for the P6SMB120A-E3/52?
The P6SMB120A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. To achieve rated 600 W pulse power and prevent thermal runaway, designers must implement minimum pad dimensions matching the outline drawing - specifically 0.086" (2.18 mm) min. width and 0.220" (5.59 mm) reference length - ensuring the P6SMB120A-E3/52 meets its thermal specifications.
P6SMB120A-E3/52 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB120A-E3/52 FAQ
1.How can I place an order for P6SMB120A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120A-E3/52 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 P6SMB120A-E3/52 reliable?
The price and inventory of P6SMB120A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB120A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120A-E3/52?
P6SMB120A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120A-E3/52 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 P6SMB120A-E3/52?
For technical support, including P6SMB120A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120A-E3/52 requirements.
6.How does Aetrix verify that P6SMB120A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB120A-E3/52 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 P6SMB120A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB120A-E3/52?
All P6SMB120A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120A-E3/52, 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 P6SMB120A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB120A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120A-E3/52 Tags
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