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Vishay General Semiconductor - Diodes Division 1.5SMC220AHE3/9AT
- Part No.:
- 1.5SMC220AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220AHE3/9AT.pdf
- Description:
- TVS DIODE 185VWM 328VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,394
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Product details
Overview
1.5SMC220AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 328 V under 4.6 A peak pulse current, and features a 185 V stand-off voltage with <1 µA reverse leakage at rated VWM. It is AEC-Q101 qualified and used to protect automotive ECUs, industrial power supplies, and telecom interface circuits against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC220AHE3/9AT datasheet, 1.5SMC220AHE3/9AT pinout, 1.5SMC220AHE3/9AT application, or 1.5SMC220AHE3/9AT equivalent, key selection criteria include its unidirectional polarity, SMC (DO-214AB) package thermal performance (RθJA = 75 °C/W), junction temperature limit of +150 °C, and compliance with UL 497B for protector classification.
Technical Context
This TVS diode operates as a clamping device that enters avalanche breakdown when reverse voltage exceeds its 209–231 V breakdown range (IT = 1 mA), limiting transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning surges.
The 1.5SMC220AHE3/9AT is rated for repetitive 10/1000 µs waveforms at 0.01% duty cycle and supports unidirectional surge handling up to 200 A (8.3 ms half-sine). Its cathode-band marking identifies polarity, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak temperature capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 185 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC working margin. |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - Confirmed avalanche initiation range; ensures predictable clamping onset across production lot. |
| VC (Clamping Voltage) | 328 V at IPPM = 4.6 A - Peak voltage seen by protected circuit during full-rated 1500 W transient; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 µs) - Energy-handling capacity for standardized lightning/surge waveforms; validated per Fig. 1 derating curve. |
| IFSM (Surge Current) | 200 A (8.3 ms half-sine) - Single-event forward surge rating; critical for inductive load switch-off protection. |
| TJ max. | +150 °C - Maximum junction temperature; sets thermal design limits for PCB copper pad area and ambient conditions. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads; guides heatsinking requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance in many layouts. |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in harsh environments. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with automated placement and lead-free assembly at 260 °C peak. |
| UL 497B recognition (QVGQ2) | Meets safety standard for telecom/data line protectors; simplifies end-equipment certification for industrial and automotive systems. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load-dump and alternator surge events in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between supply rail and chassis ground to shunt transients before they reach sensitive ICs. Use Value: Clamps 185 V stand-off to 328 V at 4.6 A, limiting stress on 3.3 V/5 V logic interfaces and meeting ISO 7637-2 Pulse 5a requirements. |
Use Scenario: Shields 24 V digital input terminals of programmable logic controllers from field-wiring induced surges and electrostatic discharge. IC Role / Device Role / Timing Role: Primary front-end surge suppression element mounted directly at connector entry point, upstream of optocoupler isolation. Use Value: Withstands 200 A 8.3 ms half-sine surges and maintains <1 µA leakage at 185 V, preserving input threshold accuracy during normal operation. |
| Telecom Base Station DC Power Feed | Consumer Appliance Motor Drive Board |
Use Scenario: Safeguards -48 V DC power distribution bus in remote radio units against lightning-induced common-mode transients on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS connected between power rail and earth ground to clamp differential and common-mode surges simultaneously. Use Value: 1500 W 10/1000 µs rating enables single-device protection compliant with ITU-T K.20/21, reducing BOM count versus multi-stage designs. |
Use Scenario: Protects gate drivers and MCU power rails on washing machine motor control boards from back-EMF spikes generated by brushed DC motors. IC Role / Device Role / Timing Role: Fast-response clamping device placed across motor driver supply pins to absorb inductive kickback energy. Use Value: Sub-1 ns response time and low Rsurge minimize voltage overshoot, preventing false triggering or latch-up in 3.3 V logic sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A-E3/52T | Lower PPPM (600 W), same VWM (185 V), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Suitable for space-constrained consumer electronics where 1500 W surge margin is not required. | Select when board area is limited and peak surge energy is ≤600 W; verify thermal derating at elevated ambient temperatures. |
| 1.5KE220A | Through-hole DO-201 package, identical electrical specs (VWM, VC, PPPM), no AEC-Q101 qualification | Used in legacy industrial power supplies where SMT is not mandated and automotive qualification is unnecessary. | Choose for cost-sensitive through-hole designs or prototyping; avoid in new automotive or high-reliability SMT production. |
Compared with SMBJ220A-E3/52T and 1.5KE220A, the 1.5SMC220AHE3/9AT uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC package thermal performance-making it optimal for automotive and industrial SMT applications demanding both robustness and manufacturability.
Availability
1.5SMC220AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power feed systems requiring stable component supply across extended product lifecycles.
Supply support for 1.5SMC220AHE3/9AT 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 and application-specific performance.
The 1.5SMC Series is engineered for high-power transient suppression in automotive, industrial, and telecom infrastructure-designed to replace older axial-leaded TVS families while delivering superior surge handling in compact SMT packages.
FAQ
What is the clamping voltage of the 1.5SMC220AHE3/9AT under maximum rated surge current?
The 1.5SMC220AHE3/9AT has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current (IPPM) of 4.6 A using a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the upper voltage limit imposed on the protected circuit during full-power transient events.
Is the 1.5SMC220AHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC220AHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets stress test requirements including temperature cycling, high-temperature reverse bias, and surge endurance-making it appropriate for engine control units, body electronics, and ADAS power domains.
What does the "HE3/9AT" suffix indicate in 1.5SMC220AHE3/9AT?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "9AT" specifies packaging in a 13-inch diameter plastic tape-and-reel format containing 3500 units. This differs from "57T" (7-inch reel, 850 units) and confirms compliance with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1.
How does the 1.5SMC220AHE3/9AT differ from bidirectional variants like 1.5SMC220CA?
The 1.5SMC220AHE3/9AT is unidirectional and features a cathode band for polarity identification; it conducts only in reverse breakdown. In contrast, 1.5SMC220CA is bidirectional with symmetrical clamping in both directions and no polarity marking-used where AC-coupled or differential signal lines require protection without polarity constraints.
What is the thermal resistance and recommended PCB layout for optimal performance of the 1.5SMC220AHE3/9AT?
The 1.5SMC220AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. To maintain reliability under repetitive surges, use minimum pad dimensions per the Vishay outline drawing and ensure uninterrupted copper pour beneath the SMC body.
1.5SMC220AHE3/9AT 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:
- Discontinued at Digi-Key
- 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)
1.5SMC220AHE3/9AT FAQ
1.How can I place an order for 1.5SMC220AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220AHE3/9AT 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 1.5SMC220AHE3/9AT reliable?
The price and inventory of 1.5SMC220AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC220AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220AHE3/9AT?
1.5SMC220AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220AHE3/9AT 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 1.5SMC220AHE3/9AT?
For technical support, including 1.5SMC220AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC220AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220AHE3/9AT 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 1.5SMC220AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC220AHE3/9AT?
All 1.5SMC220AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220AHE3/9AT, 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 1.5SMC220AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC220AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220AHE3/9AT Tags
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