My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB120A-E3/5B
;;2.jpg)
- Part No.:
- P6SMB120A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120A-E3/5B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,716
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB120A-E3/5B 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 = 1.0 mA), 165 V maximum clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects power rails and signal lines in industrial motor drives, automotive ECUs, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB120A-E3/5B datasheet, P6SMB120A-E3/5B pinout, P6SMB120A-E3/5B application, or P6SMB120A-E3/5B equivalent, key selection criteria include unidirectional polarity, 102 V stand-off voltage (VWM), <1.0 µA reverse leakage at VWM, 150 °C max junction temperature, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (>1 MΩ) with only 1.0 µA max reverse leakage at 102 V; during transient events exceeding VBR, it avalanches rapidly (<1 ns response) to clamp voltage at ≤165 V while diverting up to 3.6 A (10/1000 µs). Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
The device is optimized for automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal, achieving thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and supports reflow peak temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1.0 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 102 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 165 V at 3.6 A - clamping voltage during 600 W transient, limiting stress on downstream ICs |
| IPPM | 3.6 A (10/1000 µs) - peak surge current capability without degradation |
| PPPM | 600 W - peak pulse power handling per standard waveform, enabling robust protection in noisy environments |
| Leakage ID | <1.0 µA at VWM - negligible standby power loss and no interference with high-impedance sensor inputs |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial power supply applications |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by band on body; compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts during forward surge (e.g., reverse-battery protection) |
| Cathode | Avalanche clamping terminal | Banded end; connected to higher-potential rail; initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil decay or lightning-induced surges without failure |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-related popcorning |
| RoHS-compliant, matte tin plating | Enables reliable solder wetting and intermetallic formation per J-STD-002 Class 2 whisker resistance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic |
Applications
| Industrial Motor Drives | Automotive Engine Control Units |
|---|---|
|
Use Scenario: Protection of 12 V/24 V power rails feeding gate drivers and microcontrollers against inductive kickback from solenoid valves and brushless motor commutation. IC Role / Device Role / Timing Role: Shunt TVS placed directly across input capacitor to clamp transients before they reach LDOs and MCU VCC pins. Use Value: Limits rail voltage to ≤165 V during 3.6 A surges, preventing latch-up or permanent damage to 32-bit MCUs rated for 40 V absolute max. |
Use Scenario: Safeguarding CAN transceiver power pins and LIN bus lines in engine bay modules exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC rail upstream of DC-DC converter, absorbing energy before regulation stage. Use Value: Withstands 102 V continuous operation and clamps 120 V transients within 1 ns, maintaining CAN signal integrity during 100 ms load dump events. |
| Telecom Power Interfaces | Consumer AC-DC Adapter Outputs |
|
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE (Power over Ethernet) injectors and splitters subjected to cable discharge events and hot-plug surges. IC Role / Device Role / Timing Role: Standoff-rated TVS between output rail and ground, sized to handle repetitive 600 W pulses at 0.01% duty cycle. Use Value: Maintains 102 V working voltage while clamping to 165 V, ensuring compatibility with 60 V-rated DC-DC controllers and protecting isolated feedback optocouplers. |
Use Scenario: Output rail protection in universal-input 5 V/12 V wall adapters where secondary-side rectifier transients threaten USB-C PD negotiation ICs and load switches. IC Role / Device Role / Timing Role: Final-stage TVS after bulk capacitance, acting as last-line defense against transformer ringing and MOSFET turn-off spikes. Use Value: Sub-µA leakage preserves no-load efficiency; 165 V clamping prevents overvoltage reset of 5 V buck converters during 10/1000 µs surges. |
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 | Same VBR (114–126 V), but SMA package (DO-214AC); 500 W PPPM; RθJA = 120 °C/W | Lower power rating and higher thermal resistance limit use in high-duty-cycle or high-ambient environments | Select when board space allows larger SMA footprint and peak power demand is ≤500 W |
| 1.5SMC120A | Same VBR, but SMC (DO-214AB) package; 1500 W PPPM; 10× higher IPPM (36 A) | Overqualified for 600 W needs; requires larger pad layout and higher-cost assembly | Choose only when system-level surge testing demands >1000 W immunity or extended lifetime under repetitive stress |
Compared with SMAJ120A and 1.5SMC120A, the P6SMB120A-E3/5B delivers optimal balance of 600 W surge capacity, SMB footprint compactness, and thermal performance (RθJA = 100 °C/W), making it ideal for space-constrained industrial and automotive PCBs requiring precise 120 V clamping.
Availability
P6SMB120A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive engine control units, and telecom power interfaces requiring stable component supply, RoHS compliance, and AEC-Q101-qualified alternatives (via HE3 suffix variants).
Supply support for P6SMB120A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific optimization for industrial and automotive markets.
The P6SMB Series targets surface-mount transient suppression in space-constrained, high-reliability systems-designed for automated placement, high surge immunity, and stable parametric performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the P6SMB120A-E3/5B under a 10/1000 µs surge?
The P6SMB120A-E3/5B has a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current of 3.6 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and represents the upper bound of voltage seen by protected circuitry during worst-case transient events. The P6SMB120A-E3/5B maintains this clamping performance across its full operating temperature range.
Is the P6SMB120A-E3/5B suitable for automotive applications?
The P6SMB120A-E3/5B itself is a commercial-grade RoHS-compliant part (E3 suffix), not AEC-Q101 qualified. However, Vishay offers the functionally identical P6SMB120AHE3_B variant (with HE3 and _B suffixes) that is AEC-Q101 qualified for automotive use. Engineers selecting the P6SMB120A-E3/5B for under-hood or ECU applications should verify qualification status via ordering code and consult Vishay's automotive-grade documentation before design-in.
What does the "-E3/5B" suffix indicate in P6SMB120A-E3/5B?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This differs from /52 (7-inch reel, 750 units) and aligns with high-volume SMT assembly requirements. The P6SMB120A-E3/5B is fully compatible with standard pick-and-place equipment calibrated for SMB (DO-214AA) devices.
How does the P6SMB120A-E3/5B compare to bidirectional TVS diodes like P6SMB120CA?
The P6SMB120A-E3/5B is unidirectional and features a cathode band for polarity-sensitive placement, whereas P6SMB120CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P6SMB120A-E3/5B provides lower leakage (<1.0 µA) and tighter VBR tolerance in forward bias, making it preferred for DC power rail protection. Bidirectional versions are reserved for AC-coupled or floating signal lines where polarity reversal may occur.
What is the thermal resistance of the P6SMB120A-E3/5B, and how does it affect PCB layout?
The P6SMB120A-E3/5B 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. To maintain safe junction temperatures below 150 °C during repetitive surges, designers must provide adequate copper area and avoid excessive trace length. Reducing pad size or omitting thermal vias increases RθJA, potentially derating IPPM and shortening device life. The P6SMB120A-E3/5B datasheet specifies exact pad dimensions in Figure 5.
P6SMB120A-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:
- 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-E3/5B FAQ
1.How can I place an order for P6SMB120A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120A-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 P6SMB120A-E3/5B reliable?
The price and inventory of P6SMB120A-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 P6SMB120A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB120A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120A-E3/5B?
P6SMB120A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120A-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 P6SMB120A-E3/5B?
For technical support, including P6SMB120A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120A-E3/5B requirements.
6.How does Aetrix verify that P6SMB120A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB120A-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 P6SMB120A-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB120A-E3/5B?
All P6SMB120A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120A-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 P6SMB120A-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB120A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120A-E3/5B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
