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Vishay General Semiconductor - Diodes Division P6SMB220CAHM3/H
- Part No.:
- P6SMB220CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB220CAHM3/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,771
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Product details
Overview
P6SMB220CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 220 V standoff voltage (VWM), 328 V maximum clamping voltage (VC) at 1.8 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB220CAHM3/H datasheet, P6SMB220CAHM3/H pinout, P6SMB220CAHM3/H application, or P6SMB220CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at VWM), then rapidly avalanches into low-impedance conduction when transient voltage exceeds its breakdown threshold (VBR = 209–231 V). Its bidirectional architecture enables symmetric clamping on both polarities without external polarity management.
Thermally, it uses a glass-passivated junction mounted in an SMB (DO-214AA) package with RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = 150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction per JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 185 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; defines operating margin below clamping onset. |
| VBR (Breakdown) | 209–231 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 328 V at IPPM = 1.8 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; determines downstream component stress. |
| PPPM | 600 W - Sustained energy absorption capacity for repetitive 10/1000 μs pulses at 0.01% duty cycle; supports industrial surge standards. |
| IPPM | 1.8 A - Peak surge current corresponding to VC; used with PCB trace impedance to estimate let-through energy. |
| TJ max. | 150 °C - Maximum junction temperature; sets thermal derating limit for ambient and power dissipation design. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; optimized for automated placement and 0.2" × 0.2" copper pad thermal relief. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Identical electrical behavior in either direction; no cathode band marking; connects across protected line and return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; supports under-hood and ADAS sensor applications. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω source impedance without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and automotive OEM sustainability mandates. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure sensors from load-dump and ISO 7637-2 pulse 5a/b transients. IC Role / Device Role / Timing Role: Shunt clamping element placed between signal line and ground, responding within <1 ns to divert surge energy. Use Value: Maintains signal integrity during 12 V/24 V system transients while enabling AEC-Q101-compliant design without additional filtering. |
Use Scenario: Safeguarding 4–20 mA current-loop inputs in programmable logic controllers against field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminals, limiting differential and common-mode overvoltage simultaneously. Use Value: Prevents op-amp saturation and ADC damage during 1 kV/500 A surge tests per IEC 61000-4-5, preserving measurement accuracy. |
| Telecom Line Interface | Power Supply Rail Clamp |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers exposed to lightning-induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Primary surge suppression stage before gas discharge tube (GDT) or secondary TVS, absorbing initial fast-rising energy. Use Value: Clamps sub-microsecond transients to <328 V before GDT fires, reducing overall let-through voltage and protecting sensitive PHY silicon. |
Use Scenario: Secondary overvoltage clamp on 24 V DC input rails of embedded controllers subjected to inductive switching spikes. IC Role / Device Role / Timing Role: Fast-response parallel shunt that activates before upstream fuse or OVP IC reacts. Use Value: Limits rail overshoot to safe levels (<330 V) during 100 mJ inductive kick events, preventing MOSFET gate oxide failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA-T | Same VWM/VC, but not AEC-Q101 qualified; JEDEC-standard SMB package with identical pinout. | Lacks automotive qualification; suitable for commercial/industrial use only. | Select when AEC-Q101 is not required and cost optimization is prioritized. |
| 1.5SMC220CA | Higher package thermal resistance (RθJA = 125 °C/W); same VWM/VC, but larger SMC (DO-214AB) footprint. | Requires larger PCB area; lower power density limits high-repetition-rate surge handling. | Choose only if existing layout uses SMC footprint and thermal derating allows. |
Compared with SMBJ220CA-T and 1.5SMC220CA, P6SMB220CAHM3/H delivers automotive-grade reliability in the smallest standardized SMB footprint, with superior thermal performance and halogen-free compliance - making it optimal for space-constrained, safety-critical designs where qualification and long-term supply continuity matter.
Availability
P6SMB220CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC analog inputs, telecom line interfaces, and 24 V DC power rail protection requiring stable component supply and full lifecycle support.
Supply support for P6SMB220CAHM3/H 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, efficiency, and application-specific validation.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, combining AEC-Q101 qualification, low-profile SMB packaging, and precise clamping control for mission-critical signal and power line protection.
FAQ
What does the 'HM3' suffix indicate in P6SMB220CAHM3/H?
The 'HM3' suffix in P6SMB220CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JESD201 Class 2 whisker testing and maximum lead-free reflow temperature of 260 °C (MSL Level 1). This makes P6SMB220CAHM3/H suitable for automotive and environmentally regulated industrial applications where material content and reliability are strictly controlled.
Is P6SMB220CAHM3/H unidirectional or bidirectional?
P6SMB220CAHM3/H is a bidirectional TVS diode, indicated by the 'CA' suffix. It provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional variants (e.g., P6SMB220A), P6SMB220CAHM3/H has no cathode marking and is used across differential lines or AC-coupled circuits where polarity reversal may occur.
What is the maximum clamping voltage of P6SMB220CAHM3/H and under what test condition?
The maximum clamping voltage of P6SMB220CAHM3/H is 328 V, measured at a peak pulse current (IPPM) of 1.8 A using a 10/1000 μs double-exponential waveform. This value is guaranteed per Vishay's datasheet (Document Number 88370, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Can P6SMB220CAHM3/H replace P6SMB220A in an existing design?
No - P6SMB220CAHM3/H is bidirectional while P6SMB220A is unidirectional. Substituting them requires verifying circuit polarity, grounding topology, and transient directionality. P6SMB220CAHM3/H lacks a cathode band and clamps equally on both polarities; using it in place of P6SMB220A may cause unintended conduction or fail to protect correctly in DC-biased applications.
What is the thermal resistance junction-to-ambient for P6SMB220CAHM3/H?
The typical thermal resistance junction-to-ambient (RθJA) for P6SMB220CAHM3/H is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and is critical for calculating allowable power dissipation and junction temperature rise in real-world PCB layouts.
P6SMB220CAHM3/H 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):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB220CAHM3/H FAQ
1.How can I place an order for P6SMB220CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB220CAHM3/H 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 P6SMB220CAHM3/H reliable?
The price and inventory of P6SMB220CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB220CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB220CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB220CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB220CAHM3/H?
P6SMB220CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB220CAHM3/H 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 P6SMB220CAHM3/H?
For technical support, including P6SMB220CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB220CAHM3/H requirements.
6.How does Aetrix verify that P6SMB220CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB220CAHM3/H 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 P6SMB220CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB220CAHM3/H?
All P6SMB220CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB220CAHM3/H, 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 P6SMB220CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB220CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB220CAHM3/H Tags
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