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Vishay General Semiconductor - Diodes Division 1.5SMC22AHE3_A/H
- Part No.:
- 1.5SMC22AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22AHE3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,217
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Product details
Overview
1.5SMC22AHE3_A/H 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 sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the 1.5SMC22AHE3_A/H datasheet, 1.5SMC22AHE3_A/H pinout, 1.5SMC22AHE3_A/H application, or 1.5SMC22AHE3_A/H equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.32), and thermal resistance (RθJA = 75 °C/W) for board-level thermal design.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 18.8 V), then rapidly avalanches below 30.6 V to divert transients away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the SMC package supports automated placement and meets MSL Level 1 reflow (260 °C peak).
The device is AEC-Q101 qualified (denoted by HE3 suffix), rated for -65 °C to +150 °C junction temperature, and specified for repetitive 10/1000 µs pulses at 0.01% duty cycle. It is not intended for continuous forward conduction - its 200 A IFSM rating applies only to 8.3 ms half-sine surges, and forward voltage is not characterized beyond VF = 3.5 V at 100 A (per series spec).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise avalanche onset window for reliable triggering without false trips |
| VWM | 18.8 V - maximum continuous reverse operating voltage; must exceed system nominal voltage (e.g., 12 V or 15 V rails) |
| VC @ IPPM | ≤30.6 V at 49 A - clamping voltage limits stress on protected devices during 1500 W transient events |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; enables protection against lightning-induced surges per IEC 61000-4-5 |
| IPPM | 49 A - peak pulse current capacity; determines minimum trace width and PCB copper area needed for safe energy dissipation |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments and sealed industrial enclosures |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; informs heatsinking requirements when operating near PD = 6.5 W limit |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; must handle full IPPM during clamping |
| Cathode | Protected line connection / transient sink | Connected to line being protected (e.g., CAN_H, 24 V supply); band-marked end; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| 1500 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-to-ground) when properly laid out |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage exposure to downstream components compared to higher-ratio TVS devices |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with high-volume automated assembly |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime |
Applications
| Automotive Sensor Interface | Industrial 24 V I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector or IC pin to clamp fast-rising spikes before they reach sensitive input stages. Use Value: Prevents latch-up or permanent damage to transceivers rated for ≤36 V absolute maximum, leveraging 30.6 V clamping at 49 A. |
Use Scenario: Safeguarding programmable logic controller (PLC) digital input modules connected to 24 V field wiring exposed to inductive switching noise and surge coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each channel's input node, coordinated with series current-limiting resistor and optional filter capacitor. Use Value: Maintains functional integrity during 1 kV/0.5 kA surge events per IEC 61000-4-4, with minimal impact on signal rise time due to low junction capacitance (~100 pF at 0 V). |
| DC Power Rail Surge Suppression | USB/Serial Port ESD Protection |
Use Scenario: Secondary protection on 12 V or 24 V DC power distribution networks feeding microcontrollers, motor drivers, or communication modules. IC Role / Device Role / Timing Role: Bulk transient absorber located after primary fuse and upstream of local regulators or point-of-load converters. Use Value: Absorbs up to 1500 W of surge energy without degradation, enabling robustness against ISO 7637-2 Pulse 5a (load dump) in automotive and heavy-industrial systems. |
Use Scenario: Board-level ESD safeguard on RS-232, RS-485, or USB VBUS lines where space-constrained layouts require discrete high-power TVS instead of integrated arrays. IC Role / Device Role / Timing Role: Standalone unidirectional clamp on positive supply rail, paired with bidirectional TVS on data lines if needed. Use Value: Delivers >30 kV HBM ESD immunity (per AEC-Q101 test flow) and sub-1 ns response to protect interface ICs from contact discharge events. |
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 VBR range (20.9–23.1 V), but lower PPPM = 400 W and SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only | Select when cost or board space is critical and surge threat level is limited to IEC 61000-4-2 ESD or low-energy transients |
| 1.5KE22A | Through-hole DO-201 package, identical electrical specs (VBR, VC, PPPM), no AEC-Q101 qualification | Lacks SMT compatibility and automotive reliability validation; requires wave soldering or hand assembly | Choose for legacy through-hole designs or prototyping where reflow compatibility and automotive qualification are not required |
Compared with SMAJ22A-E3/57T and 1.5KE22A, the 1.5SMC22AHE3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC package - making it the only option among the three validated for production automotive electronics requiring both high-energy transient immunity and automated manufacturing.
Availability
1.5SMC22AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and DC power rail surge suppression requiring stable component supply, AEC-Q101 compliance, and high-reliability transient protection.
Supply support for 1.5SMC22AHE3_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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific performance.
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, high surge rating, and qualification-grade consistency are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC22AHE3_A/H?
The 1.5SMC22AHE3_A/H has a guaranteed breakdown voltage range of 20.9 V to 23.1 V at 1 mA test current, corresponding to ±5% tolerance around the nominal 22 V rating. This tight VBR window ensures consistent triggering behavior across production lots and temperature extremes, critical for protecting circuits with narrow voltage margins.
Is the 1.5SMC22AHE3_A/H suitable for bidirectional signal line protection?
No - the 1.5SMC22AHE3_A/H is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection (e.g., RS-485, USB D+/D−), use the "CA" variant such as 1.5SMC22CAHE3_A/H. Using the unidirectional 1.5SMC22AHE3_A/H on AC-coupled or symmetrical signal lines risks forward conduction and failure during negative transients.
Does the 1.5SMC22AHE3_A/H meet automotive qualification standards?
Yes - the "HE3" suffix explicitly denotes AEC-Q101 qualification, confirmed in Vishay's 1.5SMC Series datasheet (Document Number 88303, Revision 09-Mar-2026). This qualification covers stress tests including HTOL, temperature cycling, ESD, and mechanical shock, validating the 1.5SMC22AHE3_A/H for use in automotive powertrain, chassis, and body electronics.
What is the maximum clamping voltage of the 1.5SMC22AHE3_A/H under surge conditions?
The 1.5SMC22AHE3_A/H clamps to a maximum of 30.6 V when subjected to its rated 49 A peak pulse current (IPPM) with a 10/1000 µs waveform. This clamping voltage is measured under standardized test conditions (mounted on 8 mm × 8 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
How does the SMC (DO-214AB) package of the 1.5SMC22AHE3_A/H compare to SMA or SMB alternatives?
The SMC package of the 1.5SMC22AHE3_A/H offers 1500 W peak pulse power - double that of SMAJ-series (400 W) and triple that of SMBJ-series (600 W) devices - due to larger die area and superior thermal path. Its 7.75 mm × 6.22 mm footprint provides better power handling than SMA (4.5 mm × 2.7 mm) while remaining compatible with standard SMT pick-and-place equipment and reflow profiles.
1.5SMC22AHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC22AHE3_A/H FAQ
1.How can I place an order for 1.5SMC22AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22AHE3_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 1.5SMC22AHE3_A/H reliable?
The price and inventory of 1.5SMC22AHE3_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 1.5SMC22AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC22AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22AHE3_A/H?
1.5SMC22AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22AHE3_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 1.5SMC22AHE3_A/H?
For technical support, including 1.5SMC22AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC22AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22AHE3_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 1.5SMC22AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC22AHE3_A/H?
All 1.5SMC22AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22AHE3_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 1.5SMC22AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC22AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22AHE3_A/H Tags
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