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Vishay General Semiconductor - Diodes Division 1.5SMC22AHM3_A/I
- Part No.:
- 1.5SMC22AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22AHM3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,928
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Product details
Overview
1.5SMC22AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 18.8 V stand-off voltage (VWM), clamps to ≤30.6 V at 49 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used in automotive power supply rail protection and industrial sensor interface circuits.
For engineers reviewing the 1.5SMC22AHM3_A/I datasheet, 1.5SMC22AHM3_A/I pinout, 1.5SMC22AHM3_A/I application, or 1.5SMC22AHM3_A/I equivalent, this page provides verified package mapping (SMC/DO-214AB), polarity marking (cathode band), junction temperature limit (150 °C), AEC-Q101 qualification status, and real-world clamping performance under standardized surge conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction technology, enabling fast response (<1 ns) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its low incremental surge resistance ensures minimal voltage overshoot during high-current transients.
The device is rated for 1500 W peak pulse power (10/1000 µs), derated above 25 °C per thermal curve Fig. 2, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and AEC-Q101 qualified (HM3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise breakdown onset for reliable clamping initiation |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤30.6 V at 49 A - clamped voltage during full 1500 W surge, limiting stress on downstream ICs |
| IPPM | 49 A - peak pulse current capability with 10/1000 µs waveform, validated on 8 mm × 8 mm copper pads |
| PPPM | 1500 W - surge energy handling capacity, critical for automotive load-dump and industrial surge immunity |
| TJ max | 150 °C - maximum junction temperature, enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height, optimized for automated placement |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002; cathode indicated by band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (forward bias) | Connected to lower-potential side of protected line; enables conduction during positive transients when cathode is biased higher |
| Cathode | Current exit terminal (forward bias); marked with band | Connected to higher-potential side (e.g., VCC rail); defines polarity-sensitive clamping direction and reverse-bias standoff behavior |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per AEC specification |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) across temperature and lifetime |
| Low profile SMC package | Enables high-density PCB layouts while maintaining thermal performance via 15 °C/W junction-to-lead resistance |
| Halogen-free & RoHS-compliant | Meets automotive material compliance requirements (JESD201 Class 2 whisker resistance, no hazardous substances) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump transients up to 40 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and ground, conducting only during overvoltage events to shunt surge current. Use Value: Limits rail voltage to ≤30.6 V during 49 A surges, preventing damage to LDOs, microcontrollers, and CAN transceivers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and field wiring faults in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional-capable design not used here; unidirectional configuration protects signal return path from positive-going transients relative to ground. Use Value: Maintains <1 µA leakage at 18.8 V, preserving signal accuracy while responding in <1 ns to 8 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding PoE-powered equipment inputs from induced surges on long Ethernet runs exposed to lightning coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuse and common-mode chokes. Use Value: Delivers 1500 W pulse handling with 30.6 V clamping, reducing required downstream capacitor voltage rating and improving system-level surge margin. |
Use Scenario: Suppressing flyback voltage spikes generated by brushed DC motor commutation in home appliances. IC Role / Device Role / Timing Role: Mounted across motor terminals in unidirectional orientation to clamp negative flyback spikes to safe levels. Use Value: Withstands 200 A single-half-sine surge (8.3 ms), preventing MOSFET avalanche failure and extending driver IC lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/57T | Same VWM (18.8 V) and VC (30.6 V), but lower PPPM = 400 W and smaller SMA package (DO-214AC) | Limited to lower-energy transients; unsuitable for automotive load dump or IEC 61000-4-5 Level 3+ testing | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE22A | Through-hole TO-204AA (DO-41) package; identical VBR, VWM, and VC, but higher RθJA (100 °C/W vs. 75 °C/W) and no AEC-Q101 qualification | Not suitable for automated SMT assembly or automotive under-hood use due to packaging and qualification gaps | Choose only for legacy through-hole designs where rework flexibility outweighs thermal and reliability requirements. |
Compared with SMAJ22A-E3/57T and 1.5KE22A, the 1.5SMC22AHM3_A/I offers superior surge energy handling (1500 W vs. 400 W or 1500 W with inferior thermal performance), AEC-Q101 qualification, and SMC package compatibility with high-volume SMT lines - making it the preferred choice for automotive and industrial applications demanding robust, production-ready protection.
Availability
1.5SMC22AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power inputs, and consumer appliance motor drives requiring stable component supply with guaranteed long-term continuity.
Supply support for 1.5SMC22AHM3_A/I 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series is engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W surge capability, and stable clamping performance are mandatory.
FAQ
What is the breakdown voltage range of the 1.5SMC22AHM3_A/I?
The 1.5SMC22AHM3_A/I has a specified breakdown voltage (VBR) range of 20.9 V to 23.1 V at a test current of 1 mA, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in safety-critical circuits.
Is the 1.5SMC22AHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC22AHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix), halogen-free, and RoHS-compliant. It is explicitly rated for automotive use including under-hood environments, supporting load dump protection per ISO 7637-2 and ESD immunity per ISO 10605 - confirmed in Vishay's qualification report for the HM3 variant.
What does the "HM3" suffix mean in 1.5SMC22AHM3_A/I?
The "HM3" suffix denotes a halogen-free, RoHS-compliant, and AEC-Q101 qualified version of the 1.5SMC22A device. The "_A" indicates revision level A, and "/I" specifies packaging in 13-inch tape-and-reel format with 3500 units per reel - all defined in Vishay's official ordering information table.
How is polarity identified on the 1.5SMC22AHM3_A/I?
The 1.5SMC22AHM3_A/I is a unidirectional TVS diode with polarity marked by a cathode band on the SMC (DO-214AB) package body. During PCB layout, the banded end must connect to the higher-potential node (e.g., VCC or signal line), while the anode connects to ground or lower potential to ensure correct clamping direction.
What is the maximum clamping voltage of the 1.5SMC22AHM3_A/I under surge conditions?
The 1.5SMC22AHM3_A/I clamps to a maximum of 30.6 V when subjected to its rated peak pulse current of 49 A (10/1000 µs waveform), as specified in the Electrical Characteristics table. This value is measured under standardized test conditions using 8.0 mm × 8.0 mm copper pads per terminal, ensuring repeatable system-level surge validation.
1.5SMC22AHM3_A/I 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
1.5SMC22AHM3_A/I FAQ
1.How can I place an order for 1.5SMC22AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22AHM3_A/I 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 1.5SMC22AHM3_A/I reliable?
The price and inventory of 1.5SMC22AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC22AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22AHM3_A/I?
1.5SMC22AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22AHM3_A/I 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 1.5SMC22AHM3_A/I?
For technical support, including 1.5SMC22AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC22AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22AHM3_A/I 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 1.5SMC22AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC22AHM3_A/I?
All 1.5SMC22AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22AHM3_A/I, 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 1.5SMC22AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC22AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22AHM3_A/I Tags
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