My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ13CAHE3_A/I
- Part No.:
- SMAJ13CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13CAHE3_A/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,827
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ13CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 21.5 V maximum clamping voltage (VC) at 18.6 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMAJ13CAHE3_A/I datasheet, SMAJ13CAHE3_A/I pinout, SMAJ13CAHE3_A/I application, or SMAJ13CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.45), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression: it responds in <1 ps to ESD and surge events, exhibits low incremental surge resistance (typical <0.3 Ω), and maintains stable clamping performance across -55 °C to +150 °C junction temperature range. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
The SMAJ13CAHE3_A/I leverages glass-passivated junction technology for robust reliability and repeatable breakdown behavior under repetitive surges. Its thermal resistance (RθJA = 120 °C/W, RθJL = 30 °C/W) supports operation up to 3.3 W steady-state dissipation when mounted per recommended pad layout, with derating above 25 °C ambient per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold. |
| VBR min/max | 14.4 V / 15.9 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 21.5 V at 18.6 A - Clamped voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy handling capacity; rated for 0.01% duty cycle per JEDEC standards. |
| ID @ VWM | 1.0 μA - Reverse leakage at standoff voltage; ensures minimal standby power loss and signal integrity in high-impedance nodes. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-temperature industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount outline with 0.208" length, 0.157" width, and 0.090" height; compatible with standard SMT reflow profiles. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (peak reflow 260 °C). Bidirectional construction means no cathode/anode marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output path; no polarity dependency - connects to protected line (e.g., CAN_H or RS-485 A). |
| Terminal 2 | Anode / Cathode (bidirectional) | Complementary terminal forming symmetrical clamp path to ground or reference rail; enables differential or common-mode protection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation when properly mounted. |
| Low clamping voltage ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to downstream ICs - critical for 3.3 V or 5 V logic protection. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics and reduces cost of ownership. |
| Glass passivated junction | Ensures stable VBR over time and temperature, low leakage drift, and immunity to humidity-induced parameter shift. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input, referenced to chassis ground. Use Value: Limits transient excursions to ≤21.5 V, preventing ADC saturation and latch-up in 12-bit SAR converters operating at 3.3 V supply. |
Use Scenario: Guarding RS-485 transceiver (e.g., SN65HVD230) data lines against EFT bursts and lightning-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Common-mode TVS pair across A/B lines, with third device from A/B to ground - forms low-inductance surge shunt path. Use Value: Maintains signal integrity during 10/1000 μs surges up to 1 kV, preserving >500 kbps data rate without bit errors or transceiver damage. |
| Consumer USB Port ESD Protection | Power Supply Input Stage Clamp |
|
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable medical devices against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at USB connector, with minimal trace length to reduce inductance. Use Value: Responds in sub-nanosecond time, clamping ESD spikes to <25 V peak, protecting USB PHY transceivers rated for 3.6 V absolute maximum. |
Use Scenario: Secondary-stage overvoltage clamp on 12 V DC input rail of industrial PLC I/O modules subjected to 24 V load dump transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor, activated only during >18 V excursions to avoid steady-state conduction. Use Value: Absorbs 400 W surge energy without failure, limiting rail voltage to 21.5 V and preventing upstream DC/DC converter shutdown or MOSFET avalanche. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CA-M3/5A | Halogen-free, RoHS-compliant, same electrical specs and AEC-Q101 qualification; differs only in material composition and packaging format (13" reel). | No functional difference; suitable where halogen-free compliance is mandated by OEM environmental policy. | Select SMAJ13CA-M3/5A if halogen-free materials are required; otherwise SMAJ13CAHE3_A/I offers identical protection with standard RoHS compliance. |
| SMBJ13CAHE3_A/I | Same VWM/VBR/VC ratings but in SMB (DO-214AA) package - 25% larger footprint, higher thermal mass, 600 W PPPM rating. | Better suited for higher-energy surges or less thermally constrained layouts; not drop-in due to different pad dimensions and mounting area. | Choose SMBJ13CAHE3_A/I only when 600 W surge margin is needed and PCB space allows larger SMB footprint; SMAJ13CAHE3_A/I remains optimal for space-constrained automotive modules. |
Compared with SMAJ13CA-M3/5A, SMAJ13CAHE3_A/I provides identical protection performance with standard RoHS compliance, while SMBJ13CAHE3_A/I trades compactness for higher surge capacity - making SMAJ13CAHE3_A/I the preferred choice for AEC-Q101-compliant, space-sensitive 12 V system protection.
Availability
SMAJ13CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB protection, and DC power input stages requiring stable component supply and AEC-Q101 assurance.
Supply support for SMAJ13CAHE3_A/I 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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMAJ series delivers standardized transient suppression in compact surface-mount packages, engineered specifically for cost-sensitive, high-reliability applications in automotive, industrial, and computing markets where consistent clamping and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMAJ13CAHE3_A/I at its rated peak pulse current?
The SMAJ13CAHE3_A/I has a maximum clamping voltage (VC) of 21.5 V at 18.6 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value represents the highest voltage that will appear across the device during a defined surge event, directly determining the overvoltage stress imposed on protected downstream components such as microcontrollers or transceivers. The SMAJ13CAHE3_A/I maintains this clamping performance consistently across its qualified temperature range (-55 °C to +150 °C).
Is SMAJ13CAHE3_A/I suitable for automotive applications?
Yes, SMAJ13CAHE3_A/I is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - all required for automotive under-hood and cabin electronics. Its 150 °C maximum junction temperature, MSL Level 1 rating, and bidirectional symmetry make SMAJ13CAHE3_A/I appropriate for engine control units, body control modules, and ADAS sensor interfaces where reliability under harsh conditions is essential.
How does the bidirectional design of SMAJ13CAHE3_A/I affect its usage in circuit protection?
The bidirectional design of SMAJ13CAHE3_A/I eliminates polarity constraints, allowing it to protect AC-coupled signals, differential buses (e.g., CAN, RS-485), or floating references without regard to terminal orientation. Unlike unidirectional TVS diodes, SMAJ13CAHE3_A/I conducts symmetrically in both directions - providing identical clamping behavior whether the transient is positive or negative relative to ground. This simplifies layout, reduces BOM count, and avoids field failures caused by incorrect orientation during assembly.
What is the maximum steady-state power dissipation of SMAJ13CAHE3_A/I?
The SMAJ13CAHE3_A/I has a maximum steady-state power dissipation (PD) of 3.3 W when mounted on an infinite heatsink at 50 °C ambient temperature. In practical PCB layouts using the recommended 0.2" × 0.2" copper pads per terminal, derating applies above 25 °C ambient per Figure 2 in the datasheet. This PD rating governs continuous leakage current handling and thermal management in high-temperature environments, but SMAJ13CAHE3_A/I is primarily intended for transient (not continuous) overload protection.
Does SMAJ13CAHE3_A/I require special PCB layout considerations?
Yes - to achieve rated 400 W peak pulse power, SMAJ13CAHE3_A/I must be mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with short, wide traces to minimize inductance. Poor layout increases effective clamping voltage due to L·di/dt effects. Additionally, SMAJ13CAHE3_A/I's MSL Level 1 rating permits standard reflow without pre-baking, but thermal relief should be avoided on pads to ensure adequate heat transfer during surge events.
SMAJ13CAHE3_A/I 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ13CAHE3_A/I FAQ
1.How can I place an order for SMAJ13CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13CAHE3_A/I 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 SMAJ13CAHE3_A/I reliable?
The price and inventory of SMAJ13CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ13CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13CAHE3_A/I?
SMAJ13CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13CAHE3_A/I 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 SMAJ13CAHE3_A/I?
For technical support, including SMAJ13CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13CAHE3_A/I requirements.
6.How does Aetrix verify that SMAJ13CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ13CAHE3_A/I 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 SMAJ13CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ13CAHE3_A/I?
All SMAJ13CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13CAHE3_A/I, 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 SMAJ13CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMAJ13CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ13CAHE3_A/I 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
