My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ110CA-E3/5A
- Part No.:
- SMAJ110CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110CA-E3/5A.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,653
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ110CA-E3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 110 V stand-off voltage (VWM), 122–135 V breakdown voltage (VBR) at 1 mA, 177 V maximum clamping voltage (VC) at 1.7 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), commonly used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMAJ110CA-E3/5A datasheet, SMAJ110CA-E3/5A pinout, SMAJ110CA-E3/5A application, or SMAJ110CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, 177 V VC under 1.7 A surge, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device across bidirectional signal or DC power rails, responding within picoseconds to transient overvoltages exceeding its VWM of 110 V. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown behavior across temperature.
The device delivers 400 W peak pulse power (derated to 300 W above 78 V), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to TJ = +150 °C. It meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though SMAJ110CA-E3/5A itself is commercial-grade RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working margin for 110 V nominal systems. |
| VBR (min/max) | 122 V / 135 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 177 V at 1.7 A - Clamping voltage under standardized 10/1000 μs surge; limits downstream voltage stress to ≤177 V during fault events. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy absorption capacity; supports robust protection in industrial motor drives and power supply inputs. |
| ID @ VWM | ≤1.0 μA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance sensor lines. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive modules or enclosed industrial enclosures without derating concerns. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm × 4.50 mm footprint; compatible with JEDEC-standard reflow profiles and J-STD-020 MSL Level 1 handling. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; no cathode/anode designation required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Both terminals function identically; connects across protected line and ground (or between differential lines) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Supports high-energy surge suppression in industrial control I/O without external heat sinking on standard PCB copper pads. |
| 177 V clamping voltage at 1.7 A | Ensures protected ICs (e.g., RS-485 transceivers, microcontroller GPIOs) remain below absolute maximum ratings during lightning-induced surges. |
| MSL Level 1 per J-STD-020 | Enables direct placement into reflow ovens without baking; eliminates moisture-related popcorning risk in high-volume SMT assembly. |
| Glass passivated chip junction | Delivers stable VBR tolerance and low leakage over 10+ years of field operation in humid or thermally cycled environments. |
| RoHS-compliant, matte tin terminals | Guarantees solderability per J-STD-002 and JESD 22-B102; avoids lead-free solder joint brittleness or whisker formation. |
Applications
| Industrial Motor Drive I/O Protection | Automotive Sensor Signal Lines |
|---|---|
|
Use Scenario: Protecting PLC digital input modules from inductive kickback generated by solenoid or relay coil de-energization. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between field input line and system ground to limit transient excursions to ≤177 V. Use Value: Prevents latch-up or gate oxide damage in optocoupler input stages and microcontroller protection diodes during 400 W surge events. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors in engine control units from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-response voltage clamp shunting surge energy away from precision ADC front-ends and op-amp buffers. Use Value: Maintains signal fidelity by limiting transient overvoltage to <177 V while adding <1 pF junction capacitance at 0 V bias. |
| Telecom Power Supply Input | Consumer Appliance Control Board |
|
Use Scenario: Safeguarding AC-DC converter primary-side controller ICs against lightning-induced surges on 110 V AC mains input. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bridge rectifier output to clamp fast-rising transients before bulk capacitor charging stage. Use Value: Absorbs 400 W peak energy without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-to-ground) immunity testing. |
Use Scenario: Protecting microcontroller reset and communication pins (I²C, UART) in washing machine main control boards from ESD and relay noise. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) bidirectional suppressor mounted directly at connector entry points to minimize trace inductance. Use Value: Eliminates false resets and bus lockups caused by ±8 kV contact ESD per IEC 61000-4-2, with no impact on normal 3.3 V/5 V logic signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110A-E3/5A | Unidirectional variant with identical VWM (110 V), VBR (122–135 V), and VC (177 V); includes cathode band marking. | Requires correct polarity installation; unsuitable for AC-coupled or floating differential lines where bidirectional clamping is mandatory. | Select SMAJ110A-E3/5A only when protecting unidirectional DC rails with known polarity and space-constrained layouts favoring same footprint. |
| SMBJ110CA-E3/52 | Same VWM (110 V) and bidirectional configuration but in larger SMB (DO-214AA) package; rated for 600 W peak pulse power. | Higher power handling enables use in higher-current surge environments (e.g., 48 V telecom power buses), but requires 5.3 mm × 4.6 mm board area vs. SMA's 4.5 mm × 5.3 mm. | Choose SMBJ110CA-E3/52 when system-level surge testing exceeds 400 W requirements or when thermal margin must be increased beyond RθJA = 120 °C/W. |
Compared with SMAJ110A-E3/5A, SMAJ110CA-E3/5A provides polarity-agnostic protection essential for AC signal paths; compared with SMBJ110CA-E3/52, it trades 200 W pulse power headroom for 30% smaller PCB footprint and lower assembly cost in space-limited consumer and industrial designs.
Availability
SMAJ110CA-E3/5A is available at Aetrix Electronics and suitable for industrial motor drive I/O protection, automotive sensor signal conditioning, and telecom power supply input circuits requiring stable component supply, RoHS compliance, and MSL Level 1 handling.
Supply support for SMAJ110CA-E3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and ruggedized packaging.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and telecom infrastructure where consistent clamping performance and long-term stability are critical.
FAQ
What is the clamping voltage of SMAJ110CA-E3/5A under a 10/1000 μs surge?
The SMAJ110CA-E3/5A exhibits a maximum clamping voltage (VC) of 177 V when subjected to its rated peak pulse current of 1.7 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88390 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMAJ110CA-E3/5A maintains this clamping performance consistently across its operational temperature range of –55 °C to +150 °C.
Is SMAJ110CA-E3/5A suitable for automotive applications?
SMAJ110CA-E3/5A is qualified to commercial-grade specifications and is not AEC-Q101 certified. For automotive use, Vishay offers the SMAJ110CA-HE3 variant (with HE3 suffix), which carries full AEC-Q101 qualification. The SMAJ110CA-E3/5A may be used in non-safety-critical aftermarket or infotainment subsystems where qualification is not mandated, but design validation against ISO 7637-2 and ISO 16750-2 remains the responsibility of the end user. The SMAJ110CA-E3/5A shares identical electrical parameters with its HE3 counterpart except for qualification status.
What is the reverse leakage current of SMAJ110CA-E3/5A at its stand-off voltage?
At its rated stand-off voltage (VWM) of 110 V and ambient temperature of 25 °C, the SMAJ110CA-E3/5A exhibits a maximum reverse leakage current (ID) of 1.0 μA. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs or precision reference nodes. Leakage remains within specification up to +125 °C, increasing predictably per the device's temperature coefficient of VBR (0.107 %/°C), and does not compromise signal integrity in battery-powered or low-power IoT edge nodes using SMAJ110CA-E3/5A.
Does SMAJ110CA-E3/5A require orientation during PCB placement?
No - SMAJ110CA-E3/5A is a bidirectional TVS diode and carries no polarity marking on its SMA (DO-214AC) package. Both terminals are functionally identical, allowing unrestricted placement across protected lines (e.g., between signal and ground, or across differential pairs). This eliminates orientation errors during automated pick-and-place and simplifies layout for AC-coupled interfaces. In contrast, the unidirectional SMAJ110A-E3/5A variant requires cathode-band alignment, making SMAJ110CA-E3/5A the preferred choice for symmetric protection schemes.
What is the thermal resistance of SMAJ110CA-E3/5A, and how does it affect PCB layout?
The SMAJ110CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and junction-to-lead resistance (RθJL) of 30 °C/W. To maintain safe operation at full 400 W pulse rating, PCB layout must provide at least these minimum pad dimensions - reducing pad size increases RθJA and risks thermal runaway during repetitive surges. The SMAJ110CA-E3/5A's RθJA value directly informs heatsinking decisions: no additional copper pour is needed for single-event protection, but repeated surges demand careful thermal simulation using this parameter.
SMAJ110CA-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 1.7A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ110CA-E3/5A FAQ
1.How can I place an order for SMAJ110CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110CA-E3/5A 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 SMAJ110CA-E3/5A reliable?
The price and inventory of SMAJ110CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ110CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ110CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110CA-E3/5A?
SMAJ110CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110CA-E3/5A 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 SMAJ110CA-E3/5A?
For technical support, including SMAJ110CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110CA-E3/5A requirements.
6.How does Aetrix verify that SMAJ110CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ110CA-E3/5A 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 SMAJ110CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ110CA-E3/5A?
All SMAJ110CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110CA-E3/5A, 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 SMAJ110CA-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ110CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110CA-E3/5A 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 …
