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Vishay General Semiconductor - Diodes Division 1.5SMC220AHE3_A/H
- Part No.:
- 1.5SMC220AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220AHE3_A/H.pdf
- Description:
- TVS DIODE 185VWM 328VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,167
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Product details
Overview
1.5SMC220AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 220 V standoff voltage (VWM), 209–231 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), and clamps to 328 V at 4.6 A peak pulse current - deployed in automotive power supplies, industrial sensor interfaces, and telecom line protection.
For engineers reviewing the 1.5SMC220AHE3_A/H datasheet, 1.5SMC220AHE3_A/H pinout, 1.5SMC220AHE3_A/H application, or 1.5SMC220AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB (SMC) package, unidirectional polarity with cathode band marking, and compliance with UL 497B for surge protector classification.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold, diverting surge energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while low incremental surge resistance minimizes clamping overshoot during high-current transients.
The 1.5SMC220AHE3_A/H is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2; thermal resistance from junction to leads is 15 °C/W, enabling effective heat transfer to PCB copper pads (0.31" × 0.31") without heatsinks under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 185 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below breakdown. |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during surges. |
| VC (Clamping Voltage) | 328 V at IPPM = 4.6 A - Peak voltage seen by protected circuit during full-rated 1500 W transient; critical for IC/MOSFET survivability. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 µs waveform) - Sustains high-energy lightning or inductive-switching transients without failure. |
| ID (Reverse Leakage) | 1 µA max at VWM - Negligible standby current; avoids loading sensitive reference or bias networks. |
| TJ max | 150 °C - Enables operation in under-hood automotive or enclosed industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated terminals, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems without degradation. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; eliminates risk of junction corrosion in humid environments. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive powertrain and body electronics where field reliability is non-negotiable. |
| Low profile SMC package | Enables automated placement and high-density layout; 0.320" × 0.246" footprint fits tight board spaces. |
| UL 497B recognized (QVGQ2) | Meets safety standard for telecom/data line protectors - simplifies end-equipment certification. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rails against load dump and alternator transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp spikes up to ±120 V. Use Value: Prevents damage to LDOs and microcontrollers during ISO 7637-2 Pulse 5a (load dump) events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in PLC analog modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Clamping device across loop terminals to shunt induced lightning energy before it reaches op-amp front-end. Use Value: Maintains signal integrity and prevents latch-up in precision instrumentation amplifiers during 1 kV/500 Ω surges. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Front-end protection for Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches. IC Role / Device Role / Timing Role: Standoff-rated TVS on +3.3 V/5 V supply lines to absorb IEC 61000-4-5 surges coupled via magnetics. Use Value: Eliminates need for secondary crowbar circuits; sustains >1000 surges at rated power without parameter shift. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback exceeding MOSFET VDS rating. Use Value: Extends MOSFET lifetime by limiting VDS stress to ≤328 V during 100 A switching transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220AHE3/A | Lower PPPM (600 W), same VWM/VBR range, SMB (DO-214AA) package - 30% smaller footprint, lower thermal mass. | Preferred for space-constrained consumer designs where 600 W surge margin suffices; not AEC-Q101 qualified. | Select SMBJ220AHE3/A only if board area is critical and automotive qualification is unnecessary. |
| 1.5KE220A-E3/54 | Through-hole (DO-201AD), higher RθJA (100 °C/W), identical electrical specs but no AEC-Q101 or UL recognition. | Suitable for prototyping or legacy through-hole assemblies; lacks automotive and safety certifications required for production vehicles. | Choose 1.5KE220A-E3/54 only for cost-sensitive, non-automotive, non-safety-critical applications with manual assembly. |
Compared with SMBJ220AHE3/A and 1.5KE220A-E3/54, the 1.5SMC220AHE3_A/H uniquely combines AEC-Q101 qualification, UL 497B recognition, 1500 W capability, and SMC packaging - making it the only option qualified for volume automotive electronics requiring both reliability and regulatory compliance.
Availability
1.5SMC220AHE3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, and telecom line card designs requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for 1.5SMC220AHE3_A/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 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC220AHE3_A/H under full-rated surge current?
The 1.5SMC220AHE3_A/H clamps to a maximum of 328 V when subjected to its rated peak pulse current of 4.6 A (10/1000 µs waveform). This value is measured per Figure 1 in the Vishay datasheet 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case transients. Designers use this VC value to verify that downstream components - such as MOSFETs or regulators - remain within their absolute maximum voltage ratings during surge events. The 1.5SMC220AHE3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the 1.5SMC220AHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC220AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 1.5SMC series datasheet (Rev. 09-Mar-2026). It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per the AEC-Q101 standard. This makes the 1.5SMC220AHE3_A/H appropriate for under-hood and cabin applications such as body control modules, ADAS power supplies, and infotainment system protection - where field reliability and zero-defect requirements are enforced.
What does the "_A/H" suffix mean in 1.5SMC220AHE3_A/H?
The "_A/H" suffix in 1.5SMC220AHE3_A/H indicates two specific ordering attributes: "A" denotes the revision level (per Note 1 on page 3 of datasheet 88303, confirming AEC-Q101 qualification for 1.5SMC6.8A to 1.5SMC220A variants), and "H" specifies the packaging format - 7-inch diameter plastic tape and reel with 850 units per reel. This suffix is part of Vishay's standardized ordering code and directly maps to the delivery mode and qualification grade; it does not affect electrical parameters but confirms compliance and logistics configuration for the 1.5SMC220AHE3_A/H.
How does the 1.5SMC220AHE3_A/H compare to bidirectional TVS diodes like 1.5SMC220CAHE3_A/H?
The 1.5SMC220AHE3_A/H is unidirectional and intended for DC-biased lines where polarity is fixed (e.g., +24 V supply rails), while 1.5SMC220CAHE3_A/H is bidirectional and suited for AC or floating signal lines (e.g., RS-485, antenna feeds). Electrically, the unidirectional version exhibits forward voltage drop (~3.5 V at 100 A) and asymmetric behavior, whereas the bidirectional type clamps equally in both directions. For the 1.5SMC220AHE3_A/H, the cathode band must be oriented toward the positive side of the protected line - incorrect orientation renders it non-functional. Designers select the 1.5SMC220AHE3_A/H specifically when polarity is known and forward conduction must be avoided.
What is the thermal resistance and recommended PCB layout for the 1.5SMC220AHE3_A/H?
The 1.5SMC220AHE3_A/H has a typical junction-to-leads thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on minimum recommended copper pads (0.31" × 0.31" per terminal, per datasheet Figure 6). To ensure reliable operation at full 1500 W surge rating, PCB layout must use these pad dimensions with internal or external copper planes connected to both terminals. Reducing pad size increases thermal impedance and risks junction overheating during repetitive surges. The 1.5SMC220AHE3_A/H does not require external heatsinking but depends critically on proper copper thermal relief design for sustained performance.
1.5SMC220AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
1.5SMC220AHE3_A/H FAQ
1.How can I place an order for 1.5SMC220AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220AHE3_A/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 1.5SMC220AHE3_A/H reliable?
The price and inventory of 1.5SMC220AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC220AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220AHE3_A/H?
1.5SMC220AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220AHE3_A/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 1.5SMC220AHE3_A/H?
For technical support, including 1.5SMC220AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC220AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220AHE3_A/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 1.5SMC220AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC220AHE3_A/H?
All 1.5SMC220AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220AHE3_A/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 1.5SMC220AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC220AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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