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Taiwan Semiconductor Corporation 1.5SMC22H
- Part No.:
- 1.5SMC22H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22H.pdf
- Description:
- 1500W, 22V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,337
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Product details
Overview
1.5SMC22H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 22V nominal breakdown voltage (19.8–24.2V), and 31.9V maximum clamping voltage at 49A peak impulse current. It protects automotive and industrial power rails against ESD, load dump, and lightning-induced transients.
For engineers reviewing the 1.5SMC22H datasheet, 1.5SMC22H pinout, 1.5SMC22H application, or 1.5SMC22H equivalent, this device delivers AEC-Q101 qualification, <1.0ps response time, <1μA leakage above 17.8V, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and glass-passivated junction reliability for high-volume automated assembly.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (19.8–24.2V @ 1mA), it avalanches to limit transient energy across protected circuitry. Its 150°C max junction temperature and 50°C/W junction-to-ambient thermal resistance support sustained operation in engine control units and DC-DC converter inputs.
The device features a single-die construction in DO-214AB package with cathode band polarity marking, matte tin-plated leads compliant with J-STD-002 solderability, and moisture sensitivity level 1 per J-STD-020 - enabling reflow compatibility without dry-pack requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 19.8V / 24.2V @ 1mA - defines precise avalanche initiation window for repeatable clamping behavior |
| VWM | 17.8V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 31.9V @ 49A - clamping voltage under 10/1000μs surge, limiting downstream IC stress to safe levels |
| PPK | 1500W - peak pulse power handling capability per single 1ms transient event |
| IR @ VWM | <1μA - ultra-low leakage ensures minimal standby power loss in battery-backed systems |
| TJ max | 150°C - enables deployment in under-hood automotive environments without derating |
| Response time | <1.0ps - sub-picosecond switching ensures protection before sensitive logic or analog circuits are damaged |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-ended unidirectional configuration with cathode band marking. Dimensions comply with JEDEC MS-013AC; weight ≈ 0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms shunt path during overvoltage events |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 24V rail); blocks normal operation, conducts during avalanche |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal/humidity stress vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) waveforms |
| Moisture sensitivity level 1 | Zero bake requirement before SMT reflow - supports direct placement from tape-and-reel without preconditioning |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 24V supply lines in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt TVS diode placed between power rail and chassis ground to clamp surges within 1.0ps. Use Value: Limits clamping voltage to 31.9V, preventing damage to 36V-rated CAN transceivers and microcontrollers downstream. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Unidirectional transient suppressor mounted at connector entry point to divert induced lightning energy. Use Value: Withstands 49A peak impulse current while maintaining <1μA leakage at 17.8V, preserving signal integrity during normal operation. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drivers |
|
Use Scenario: Guarding -48V telecom power supplies against ESD and switching noise from relay banks. IC Role / Device Role / Timing Role: Reverse-biased TVS on output rail to absorb negative-going transients exceeding VWM. Use Value: 1500W peak power rating handles repetitive 10/1000μs surges without degradation, supporting 10-year field life. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Clamp diode across motor terminals to limit flyback voltage spikes during PWM commutation. Use Value: 19.8–24.2V breakdown range aligns precisely with 24V motor supply, ensuring early conduction before MOSFET drain-source breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | DO-214AA (SMB) package, 600W rating, 22V VBR (20.9–23.1V), 35.5V VC @ 17A | Lower power handling limits use to lower-energy transients; smaller footprint saves board space | Select SMBJ22A where surge energy is ≤600W and PCB area is constrained; verify thermal margin with RθJA = 65°C/W |
| 1.5KE22A | DO-201AD (axial leaded) package, 1500W rating, same VBR/VC, but through-hole mounting | Requires manual or wave-solder assembly; unsuitable for fully SMT production lines | Choose 1.5KE22A only for prototyping or legacy through-hole designs; not recommended for new SMT automotive programs |
Compared with 1.5SMC22H, SMBJ22A trades power robustness for compactness and cost, while 1.5KE22A sacrifices automated placement capability for identical electrical performance in non-SMT contexts.
Availability
1.5SMC22H is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, and telecom DC power feeds requiring stable component supply, AEC-Q101 qualification, and 1500W transient immunity.
Supply support for 1.5SMC22H 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs with global automotive and industrial certifications.
The 1.5SMC series was designed specifically for high-reliability surface-mount transient suppression in harsh environments - emphasizing AEC-Q101 compliance, fast response, and robust thermal performance in DO-214AB packaging.
FAQ
What is the clamping voltage of the 1.5SMC22H under peak surge conditions?
The 1.5SMC22H exhibits a maximum clamping voltage (VC) of 31.9V at 49A peak impulse current (IPPM) with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream circuitry sees no more than 31.9V during standardized surge events - critical for safeguarding 36V-tolerant CAN transceivers and microcontrollers in automotive applications.
Is the 1.5SMC22H suitable for bidirectional transient protection?
No, the 1.5SMC22H is a unidirectional TVS diode intended for DC line protection with defined polarity (cathode-marked). For bidirectional applications such as AC signal lines or differential buses, TSC offers the 1.5SMC22AH variant - which uses a symmetrical bipolar structure and carries the "AH" suffix. Using 1.5SMC22H in reverse-biased AC configurations risks permanent failure due to forward conduction during negative half-cycles.
Does the 1.5SMC22H require special handling or baking before reflow soldering?
No - the 1.5SMC22H has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it may be stored indefinitely at ambient conditions and placed directly into standard lead-free reflow profiles without pre-baking. Its matte tin-plated leads also meet J-STD-002 solderability requirements, eliminating post-solder cleaning or flux residue concerns in high-volume SMT lines.
How does the 1.5SMC22H compare to older 1.5KE series in terms of PCB assembly?
The 1.5SMC22H replaces axial 1.5KE22A in SMT production by offering identical 1500W surge rating and 22V breakdown in DO-214AB (SMC) surface-mount packaging. Unlike the through-hole 1.5KE22A, the 1.5SMC22H supports full automation, eliminates wave-solder steps, reduces board real estate by >60%, and achieves better thermal coupling to copper planes - making it the preferred choice for modern automotive ECUs and industrial controllers.
What standards does the 1.5SMC22H meet for automotive electromagnetic compatibility?
The 1.5SMC22H meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling) test requirements - all verified per AEC-Q101 stress testing. Its <1.0ps response time and glass-passivated junction ensure consistent performance across temperature (-55°C to +150°C), fulfilling OEM-level EMC robustness mandates for power-supply front-end protection in ADAS and infotainment modules.
1.5SMC22H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC22H FAQ
1.How can I place an order for 1.5SMC22H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22H 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 1.5SMC22H reliable?
The price and inventory of 1.5SMC22H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22H is usually 5 days.
3.What payment methods are accepted for 1.5SMC22H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22H?
1.5SMC22H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22H 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 1.5SMC22H?
For technical support, including 1.5SMC22H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22H requirements.
6.How does Aetrix verify that 1.5SMC22H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22H 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 1.5SMC22H meets industry standards.
7.What is the process for return or replacement of 1.5SMC22H?
All 1.5SMC22H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22H, 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 1.5SMC22H part is unused and in its original packaging.
Return procedure for 1.5SMC22H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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