My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J22CAHM3/H
- Part No.:
- SMA5J22CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22CAHM3/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,011
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J22CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown range (VBR), 500 W peak pulse power (10/1000 μs), clamping voltage of 35.5 V at 14.1 A, and operates from −55 °C to +150 °C - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J22CAHM3/H datasheet, SMA5J22CAHM3/H pinout, SMA5J22CAHM3/H application, or SMA5J22CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to ESD and lightning-induced transients. Its bidirectional architecture enables symmetric clamping in both polarities without external polarity management, making it suitable for AC-coupled or floating signal paths.
The device meets MSL Level 1 per J-STD-020 (peak reflow ≤260 °C), has a typical junction-to-lead thermal resistance of 25 °C/W, and delivers stable performance up to 150 °C junction temperature - critical for under-hood automotive and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 24.4 V / 26.9 V - verified breakdown threshold at 1 mA test current, ensuring predictable turn-on |
| VC @ IPPM | 35.5 V at 14.1 A - clamped voltage during 500 W surge, limiting downstream IC stress |
| PPPM | 500 W - peak pulse power handling with 10/1000 μs waveform, supporting IEC 61000-4-5 Level 4 |
| TJ range | −55 °C to +150 °C - qualified for extended-temperature automotive and industrial operation |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with standard pick-and-place and reflow processes |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements (HTOL, TC, HTRB, etc.) |
| RoHS & Halogen-Free | Compliant per HM3 suffix - meets EU RoHS Directive 2011/65/EU and JEDEC JS709E |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in either direction - no cathode band; terminals interchangeable |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; mounted on 5.0 mm × 5.0 mm copper pads for optimal thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns |
| 500 W surge rating (10/1000 μs) | Withstands repeated IEC 61000-4-5 surges up to 4 kV (open-circuit) in industrial and automotive systems |
| AEC-Q101 qualified (HM3) | Validated for automotive use including engine control modules, ADAS sensors, and body electronics |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for 3.3 V/5 V logic interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains and end-of-life recycling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Clamps transients to ≤35.5 V while maintaining 22 V operating window - preserving signal integrity for 5 V rail-based sensors. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against induced surges from relay coil switching and motor drive noise. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC input channels, absorbing repetitive 500 W pulses without degradation. Use Value: Enables >100,000 surge cycles at rated power due to low thermal resistance (25 °C/W) and robust glass-passivated junction. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Secondary-level protector downstream of gas discharge tubes, providing fast-response clamping for sub-microsecond transients. Use Value: Sub-35.5 V clamping voltage ensures compliance with IEEE 802.3af/bt surge immunity requirements. | Use Scenario: ESD and surge protection on USB-C and barrel jack inputs of wall adapters and battery chargers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input rails, preventing damage to secondary-side controllers and MOSFETs during plug-in events. Use Value: 150 °C max junction temperature supports compact, sealed enclosures with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22CAHE3/H | Same electrical specs; RoHS-compliant but not halogen-free; AEC-Q101 qualified (HE3 suffix) | Preferred where halogen content is unrestricted but automotive qualification is required | Select SMA5J22CAHE3/H for cost-sensitive automotive designs without halogen-free mandate |
| SMA6J22CAHM3/H | 600 W PPPM, same VWM/VC, identical package and AEC-Q101/HM3 compliance | Used when higher surge margin is needed (e.g., heavy-duty industrial motor controls) | Choose SMA6J22CAHM3/H if system-level testing requires >500 W surge headroom |
Compared with SMA5J22CAHE3/H, the SMA5J22CAHM3/H adds halogen-free compliance without sacrificing AEC-Q101 qualification or clamping performance; versus SMA6J22CAHM3/H, it trades 100 W peak power for tighter board space and lower cost in applications meeting 500 W IEC 61000-4-5 requirements.
Availability
SMA5J22CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply across multi-year production programs.
Supply support for SMA5J22CAHM3/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 and application-specific performance.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and telecom sectors where AEC-Q101 qualification and consistent clamping behavior are mandatory.
FAQ
What is the clamping voltage of the SMA5J22CAHM3/H under full-rated surge current?
The SMA5J22CAHM3/H clamps to a maximum of 35.5 V when subjected to its peak pulse current of 14.1 A (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88875, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during surge events. The SMA5J22CAHM3/H maintains this clamping performance across its full operating temperature range.
Is the SMA5J22CAHM3/H suitable for automotive applications?
Yes, the SMA5J22CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It is specified for operation from −55 °C to +150 °C and tested per automotive stress requirements including HTOL, temperature cycling, and humidity testing. The SMA5J22CAHM3/H is commonly deployed in engine control units, ADAS sensor interfaces, and body electronics.
Does the SMA5J22CAHM3/H have polarity markings?
No, the SMA5J22CAHM3/H is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMA (DO-214AC) package. Its symmetrical structure allows either terminal to serve as anode or cathode depending on transient polarity - simplifying layout and eliminating orientation errors during automated assembly.
What is the thermal resistance of the SMA5J22CAHM3/H?
The SMA5J22CAHM3/H has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W and a junction-to-ambient resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per datasheet condition. These values enable reliable power dissipation during repetitive surge events and support thermal design in confined PCB areas.
How does the SMA5J22CAHM3/H differ from the unidirectional SMA5J22AHM3/H?
The SMA5J22CAHM3/H is bidirectional with symmetrical clamping in both polarities, while the SMA5J22AHM3/H is unidirectional and features a cathode band. Electrically, the unidirectional version supports forward surge current (IFSM = 40 A) and has a forward voltage drop (~3.5 V at 25 A), whereas the SMA5J22CAHM3/H does not specify forward conduction parameters. Use SMA5J22CAHM3/H for AC or floating signal lines; SMA5J22AHM3/H for DC rail protection with defined polarity.
SMA5J22CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 14.1A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J22CAHM3/H FAQ
1.How can I place an order for SMA5J22CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22CAHM3/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 SMA5J22CAHM3/H reliable?
The price and inventory of SMA5J22CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J22CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22CAHM3/H?
SMA5J22CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22CAHM3/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 SMA5J22CAHM3/H?
For technical support, including SMA5J22CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22CAHM3/H requirements.
6.How does Aetrix verify that SMA5J22CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J22CAHM3/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 SMA5J22CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J22CAHM3/H?
All SMA5J22CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22CAHM3/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 SMA5J22CAHM3/H part is unused and in its original packaging.
Return procedure for SMA5J22CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J22CAHM3/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 …
