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Vishay General Semiconductor - Diodes Division SMA5J22CAHE3/5A
- Part No.:
- SMA5J22CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22CAHE3/5A.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,291
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Product details
Overview
SMA5J22CAHE3/5A 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), 35.5 V clamping voltage at 14.1 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform. It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J22CAHE3/5A datasheet, SMA5J22CAHE3/5A pinout, SMA5J22CAHE3/5A application, or SMA5J22CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 500 W surge rating, thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with electrical characteristics defined across reverse and forward directions per ANSI/IEEE C62.35. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing fast-rising transients from inductive switching or ESD events.
Mounted on minimum recommended 0.2" × 0.2" copper pads, it delivers rated 500 W peak pulse power only under specified thermal conditions; derating applies above TA = 25 °C per Figure 2. The device is not polarity-marked-consistent with bidirectional construction-and meets MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR min/max | 24.4 V / 26.9 V - breakdown occurs within this range at 1 mA test current; ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 35.5 V at 14.1 A - clamped voltage during 10/1000 μs surge; limits stress on downstream ICs such as CAN transceivers or microcontrollers. |
| PPPM | 500 W - peak pulse power handling with 10/1000 μs waveform; supports robust protection in automotive load-dump scenarios. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments with sustained thermal stress. |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on standard PCB layout; informs heatsinking requirements for repeated surge duty cycles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - consistent with bidirectional functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band - enables orientation-agnostic PCB layout and eliminates assembly errors. |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; thermal path relies on copper pad area (0.2" × 0.2") for RθJA = 80 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN FD differential pairs) without polarity concerns. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS sensor, and body electronics. |
| 500 W 10/1000 μs rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 12 V system levels when properly mounted; exceeds typical 350 W requirement for Class D protection. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking - simplifies high-volume SMT manufacturing. |
| Glass-passivated junction | Provides stable VBR tolerance and low leakage (<1 μA at VWM) over lifetime, critical for low-power always-on sensor nodes. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to ISO 16750-2 supply transients and ESD. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and MCU ADC input, shunting surges before they reach precision front-end circuitry. Use Value: Limits clamped voltage to 35.5 V while sustaining 500 W pulses - prevents latch-up or gate oxide damage in 3.3 V/5 V signal chain components. |
Use Scenario: Guarding half-duplex RS-485 transceiver data lines (A/B) in factory automation PLCs subject to cable-induced lightning surges and ground potential differences. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common-mode ground, absorbing differential and common-mode transients simultaneously. Use Value: Maintains signal integrity by clamping transients within 1 ns, with <1 μA leakage at 22 V - avoids bias current errors in high-impedance receiver inputs. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
Use Scenario: Safeguarding USB-C CC and VCONN lines in portable docking stations against hot-plug ESD and VBUS coupling events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp installed adjacent to connector, routing transients to chassis ground before reaching USB PD controller. Use Value: Delivers 500 W surge rating in ultra-compact SMA package - fits tight board space while meeting IEC 61000-4-2 Level 4 (±15 kV air) without degrading 5 Gbps signal fidelity. |
Use Scenario: Shielding ADSL/VDSL line drivers and receivers in residential gateways from induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary protection device on line-side transformer secondary, clamping longitudinal surges before hybrid coupler and codec ICs. Use Value: Withstands repeated 10/1000 μs surges up to 500 W - extends field life in lightning-prone regions where telecom infrastructure lacks upstream gas-tube protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22CA-M3/5A | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; same SMA package and thermal performance. | No functional difference; selected when halogen-free material compliance is mandated by OEM or regional environmental policy (e.g., EU ELV Directive). | Choose SMA5J22CA-M3/5A if halogen-free content is contractually required; otherwise SMA5J22CAHE3/5A offers full AEC-Q101 traceability with standard RoHS compliance. |
| SMCJ22CAHE3/5A | Same VWM (22 V), VBR (24.4–26.9 V), and AEC-Q101 qualification, but in larger SMC (DO-214AB) package with 1500 W PPPM rating and lower RθJA (35 °C/W). | Used where higher surge energy (e.g., ISO 7637-2 Pulse 5b) or improved thermal dissipation is needed; requires larger PCB footprint and different pad layout. | Select SMCJ22CAHE3/5A only when 500 W is insufficient and board space allows SMC package; SMA5J22CAHE3/5A remains optimal for space-constrained AEC-Q101 designs needing exactly 500 W rating. |
Compared with SMA5J22CA-M3/5A, SMA5J22CAHE3/5A provides identical protection performance with standard RoHS compliance; compared with SMCJ22CAHE3/5A, it trades surge capacity and thermal margin for compact size - making it the preferred choice for dense automotive ECUs and portable industrial gateways.
Availability
SMA5J22CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and consumer USB-C docking stations requiring stable component supply, AEC-Q101 traceability, and high-reliability transient suppression.
Supply support for SMA5J22CAHE3/5A 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 SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount surge protection in automotive, industrial, and telecom applications demanding AEC-Q101 qualification and repeatable clamping performance.
FAQ
What is the clamping voltage of the SMA5J22CAHE3/5A under a 10/1000 μs surge?
The SMA5J22CAHE3/5A clamps to a maximum of 35.5 V when subjected to its rated peak pulse current of 14.1 A with a 10/1000 μs waveform. This value is measured at the device terminals under standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J22CAHE3/5A maintains this clamping performance consistently across its operational temperature range.
Is the SMA5J22CAHE3/5A suitable for automotive applications?
Yes, the SMA5J22CAHE3/5A is AEC-Q101 qualified and explicitly intended for automotive use, including engine control units, ADAS sensor interfaces, and body electronics. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and validated performance under temperature cycling and HTRB testing meet automotive reliability requirements. The SMA5J22CAHE3/5A is listed in Vishay's AEC-Q101 qualified product portfolio with full traceability.
Does the SMA5J22CAHE3/5A have polarity markings?
No, the SMA5J22CAHE3/5A does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMA5J22A), it lacks a cathode band and functions identically regardless of terminal orientation. This design eliminates assembly errors in automated placement and simplifies layout for differential or floating signal lines where polarity is undefined.
What is the thermal resistance of the SMA5J22CAHE3/5A?
The SMA5J22CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still-air conditions and defines the temperature rise per watt of power dissipated. For sustained or repetitive surge conditions, thermal derating per Figure 2 in the datasheet must be applied to ensure the SMA5J22CAHE3/5A remains within its 150 °C TJ max limit.
How does the SMA5J22CAHE3/5A differ from the SMA5J22A variant?
The SMA5J22CAHE3/5A is bidirectional with symmetrical clamping in both polarities, while the SMA5J22A is unidirectional and features a cathode band. Electrically, the SMA5J22CAHE3/5A has identical VWM (22 V), VBR (24.4–26.9 V), and PPPM (500 W) ratings but differs in leakage current specification (≤1 μA at VWM vs. ≤800 μA for unidirectional types at higher VWM points) and absence of forward voltage drop (VF) data. The SMA5J22CAHE3/5A is selected for AC-coupled or floating interfaces; SMA5J22A suits DC-biased power rail protection.
SMA5J22CAHE3/5A 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J22CAHE3/5A FAQ
1.How can I place an order for SMA5J22CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22CAHE3/5A 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 SMA5J22CAHE3/5A reliable?
The price and inventory of SMA5J22CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J22CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22CAHE3/5A?
SMA5J22CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22CAHE3/5A 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 SMA5J22CAHE3/5A?
For technical support, including SMA5J22CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J22CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J22CAHE3/5A 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 SMA5J22CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J22CAHE3/5A?
All SMA5J22CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22CAHE3/5A, 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 SMA5J22CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J22CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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