My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC22CAHM3/H
- Part No.:
- 1.5SMC22CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHM3/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC22CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 1500 W peak pulse power (10/1000 μs), and clamps transients to ≤30.6 V at 49.0 A peak pulse current - deployed on power rails and signal lines of automotive ECUs and industrial sensor interfaces.
For engineers reviewing the 1.5SMC22CAHM3/H datasheet, 1.5SMC22CAHM3/H pinout, 1.5SMC22CAHM3/H application, or 1.5SMC22CAHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–65 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The 1.5SMC22CAHM3/H operates as a bidirectional clamping device with symmetrical avalanche behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated silicon junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 μs transients at 0.01% duty cycle.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it achieves 1500 W peak pulse power dissipation while maintaining clamping voltage ≤30.6 V at IPPM = 49.0 A. Thermal performance is characterized by RθJL = 15 °C/W (junction-to-leads) and RθJA = 75 °C/W (junction-to-ambient), supporting operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at IT = 1.0 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 18.8 V - maximum continuous reverse stand-off voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 30.6 V at 49.0 A - clamping voltage limiting transient energy delivered to downstream circuitry |
| PPPM | 1500 W (10/1000 μs waveform) - peak surge handling capacity for lightning and inductive switching events |
| IPPM | 49.0 A - maximum non-repetitive surge current the device sustains without failure |
| TJ Range | –65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMC (DO-214AB) package: surface-mount, bidirectional device with no polarity marking; terminals are symmetric and interchangeable. Cathode/anode designation does not apply - both ends function identically under reverse or forward bias during transient events.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Interchangeable connection point; identical electrical behavior in either direction |
| Terminal 2 | Anode/Cathode (bidirectional) | Interchangeable connection point; identical electrical behavior in either direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant | Meets JEDEC JESD201 Class 2 whisker resistance and environmental compliance requirements |
| 1500 W peak pulse power | Withstands high-energy surges from load dump, ISO 7637-2 Pulse 5a, and IEC 61000-4-5 Level 4 |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes let-through voltage stress on protected ICs such as CAN transceivers and microcontrollers |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed across power input pins upstream of DC/DC converters. Use Value: Limits voltage excursion to ≤30.6 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream PMICs. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) in factory-floor pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp on differential signal pairs. Use Value: Maintains signal integrity with <1.0 μA leakage at 18.8 V while responding in <1 ns to ±8 kV contact ESD per IEC 61000-4-2. |
| Telecom Interface Surge Protection | Consumer USB Port Overvoltage Clamp |
|
Use Scenario: Safeguarding RS-485 transceivers in building automation gateways exposed to induced lightning surges on long-wire runs. IC Role / Device Role / Timing Role: Primary-level TVS on bus lines (A/B), coordinated with secondary GDT or polymer PTC. Use Value: Clamps common-mode transients to <31 V within 100 ps, preserving data integrity during 10/1000 μs surges up to 49 A. |
Use Scenario: Preventing overvoltage damage to USB-C port controllers during hot-plug events or adapter faults. IC Role / Device Role / Timing Role: Bidirectional clamp on VBUS line, rated for repeated 1500 W pulses without degradation. Use Value: Survives >1000 surge events at 49 A while maintaining VWM = 18.8 V - ensuring no false triggering during normal 5 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Lower peak power rating (600 W), smaller SMB package (DO-214AA), higher RθJA = 90 °C/W | Suitable for space-constrained consumer PCBs where surge energy rarely exceeds 600 W | Select when board area is limited and full 1500 W capability is unnecessary |
| 1.5KE22CA | Through-hole TO-218 package, same 1500 W rating but slower response due to higher parasitic inductance | Used in legacy industrial power supplies where manual assembly or high-vibration mounting is required | Choose only if through-hole mounting is mandated and layout allows for longer trace lengths |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMC footprint - making it the preferred choice for new automotive and high-reliability industrial designs requiring automated assembly and extended thermal margin.
Availability
1.5SMC22CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial sensor interface hardening, and telecom RS-485 surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC22CAHM3/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, MOSFETs, and protection devices with emphasis on reliability and application-specific optimization.
The 1.5SMC Series targets high-power transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and compatibility with automated SMT assembly.
FAQ
What is the breakdown voltage tolerance for 1.5SMC22CAHM3/H?
The 1.5SMC22CAHM3/H has a specified breakdown voltage range of 20.9 V to 23.1 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 22 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level surge margin calculations in designs using the 1.5SMC22CAHM3/H.
Is 1.5SMC22CAHM3/H suitable for automotive applications?
Yes, the 1.5SMC22CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It meets stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D - making the 1.5SMC22CAHM3/H appropriate for engine control units, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of 1.5SMC22CAHM3/H at its rated peak pulse current?
The 1.5SMC22CAHM3/H clamps to a maximum of 30.6 V when subjected to its rated peak pulse current of 49.0 A (10/1000 μs waveform). This VC value is measured under standardized conditions per Fig. 1 and Fig. 3 of the Vishay datasheet 88303, and represents the upper limit of voltage seen by protected circuitry during worst-case surge events applied to the 1.5SMC22CAHM3/H.
Does 1.5SMC22CAHM3/H have polarity markings?
No, the 1.5SMC22CAHM3/H is a bidirectional TVS diode and carries no polarity marking on its SMC (DO-214AB) package. Both terminals are electrically identical - the device provides symmetrical clamping in either direction, eliminating orientation concerns during placement and simplifying layout for differential or AC-coupled signal paths using the 1.5SMC22CAHM3/H.
What is the thermal resistance of 1.5SMC22CAHM3/H from junction to ambient?
The 1.5SMC22CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. This value assumes still air convection and is critical for calculating maximum allowable power dissipation at elevated ambient temperatures - a key parameter for thermal design validation of any system incorporating the 1.5SMC22CAHM3/H.
1.5SMC22CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
1.5SMC22CAHM3/H FAQ
1.How can I place an order for 1.5SMC22CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHM3/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 1.5SMC22CAHM3/H reliable?
The price and inventory of 1.5SMC22CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22CAHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHM3/H?
1.5SMC22CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHM3/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 1.5SMC22CAHM3/H?
For technical support, including 1.5SMC22CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC22CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHM3/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 1.5SMC22CAHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHM3/H?
All 1.5SMC22CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHM3/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 1.5SMC22CAHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CAHM3/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
