My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ13A-E3/9AT
- Part No.:
- SMCJ13A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13A-E3/9AT.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ13A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 13 V stand-off voltage (VWM), 21.5 V maximum clamping voltage (VC) at 69.8 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 μs waveform.
For engineers reviewing the SMCJ13A-E3/9AT datasheet, SMCJ13A-E3/9AT pinout, SMCJ13A-E3/9AT application, or SMCJ13A-E3/9AT equivalent, key selection criteria include clamping performance under 69.8 A surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity with cathode band marking, and RoHS-compliant matte tin-plated leads suitable for automated placement on industrial and automotive PCBs.
Technical Context
This TVS diode operates as a fast-acting shunt protector that clamps transient overvoltages above its breakdown voltage (VBR min = 14.4 V, max = 15.9 V at 1.0 mA test current) while maintaining low leakage (<1.0 μA at 13 V). Its glass-passivated junction ensures stable performance and reliability under repetitive surge stress.
Designed for surface-mount assembly on standard 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, it meets MSL level 1 per J-STD-020 with peak reflow temperature up to 260 °C and supports operation across -55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 14.4 V / 15.9 V at 1.0 mA - Ensures reliable turn-on margin above VWM with defined threshold tolerance |
| VC @ IPPM | 21.5 V at 69.8 A - Clamping voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - Peak transient energy handling capability under standardized waveform |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient, critical for power derating above 25 °C |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 2-terminal configuration and cathode band marking |
| Polarity | Unidirectional - Cathode indicated by band; blocks forward conduction until breakdown threshold exceeded |
Pinout & Package
SMCJ13A-E3/9AT uses the SMC (DO-214AB) package: a 2-terminal surface-mount device with cathode identified by a visible band on the body. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when voltage exceeds VBR |
| Anode (non-banded end) | Reference/ground return path | Typically tied to system ground plane; completes clamping loop during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tight clamping (21.5 V at 69.8 A), minimizing voltage overshoot during fast transients |
| Very fast response time | Sub-nanosecond turn-on ensures protection before sensitive ICs experience damaging overvoltage |
| Glass passivated chip junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives |
| MSL Level 1 rating | Allows direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C |
| RoHS-compliant, commercial grade | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC JESD201 Class 2 whisker resistance |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt clamping device placed between power rail and ground, activated only during overvoltage events. Use Value: Limits voltage seen by downstream regulators and microcontrollers to ≤21.5 V during 69.8 A surges, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontroller ADC inputs. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional part protects signal lines referenced to ground with defined polarity. Use Value: Clamps ESD and cable discharge events to <21.5 V while maintaining <1.0 μA leakage at 13 V, preserving signal integrity and offset accuracy. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Securing 12–48 V DC input stages of base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end TVS in series with fuse and common-mode choke; absorbs bulk transient energy. Use Value: Handles 1500 W peak pulse power with 75 °C/W thermal resistance, enabling robust protection without thermal runaway under repeated stress. | Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in portable media players and smart speakers. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and ground, triggered only during positive overvoltage events. Use Value: Provides certified ESD immunity per IEC 61000-4-2 (±30 kV air, ±30 kV contact) while occupying minimal board area in SMC package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A-E3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VBR/VC specs | Reduced surge handling; suited for lower-energy transients or space-constrained layouts | Select when board area is critical and peak surge current remains ≤27.9 A |
| SMCJ13CA-E3/9AT | Bidirectional version; identical VWM (13 V), VBR (14.4–15.9 V), VC (21.5 V), but symmetrical conduction in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose only when bidirectional clamping is mandated by circuit topology or standards (e.g., RS-485, CAN) |
Compared with SMBJ13A-E3/52T and SMCJ13CA-E3/9AT, the SMCJ13A-E3/9AT delivers higher surge robustness (1500 W vs. 600 W) in the same SMC footprint, while offering unidirectional polarity essential for DC power rail protection where reverse conduction must be blocked.
Availability
SMCJ13A-E3/9AT is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and full traceability.
Supply support for SMCJ13A-E3/9AT 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 high-volume manufacturability.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure applications where robustness and AEC-Q101 qualification options are required.
FAQ
What is the maximum clamping voltage of SMCJ13A-E3/9AT under rated surge conditions?
The SMCJ13A-E3/9AT has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 69.8 A using the 10/1000 μs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuits during transient events. The SMCJ13A-E3/9AT maintains this clamping performance across its specified operating temperature range.
Does SMCJ13A-E3/9AT meet automotive qualification standards?
The SMCJ13A-E3/9AT is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, the equivalent part is SMCJ13AHE3_A/I (with HE3 suffix), which shares identical electrical characteristics but adds automotive qualification and halogen-free construction. The SMCJ13A-E3/9AT remains suitable for non-safety-critical automotive subsystems where commercial-grade reliability suffices.
How does the SMCJ13A-E3/9AT differ from the bidirectional SMCJ13CA-E3/9AT?
The SMCJ13A-E3/9AT is unidirectional, conducting only when reverse voltage exceeds its breakdown threshold, with polarity marked by a cathode band. The SMCJ13CA-E3/9AT is bidirectional, providing symmetrical clamping for both polarities and lacking polarity marking. Both share identical VWM (13 V), VBR (14.4–15.9 V), and VC (21.5 V), but the SMCJ13A-E3/9AT must be oriented correctly in-circuit, whereas the SMCJ13CA-E3/9AT can be mounted without orientation concern.
What is the thermal resistance and power derating behavior of SMCJ13A-E3/9AT?
The SMCJ13A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended pad layout (0.31" × 0.31" copper pads). Its power dissipation derates linearly above 25 °C ambient, reaching zero at 150 °C junction temperature. At 70 °C ambient, the maximum continuous power drops to approximately 4.1 W. This derating curve is documented in Figure 2 of the Vishay datasheet 88394.
Can SMCJ13A-E3/9AT be used in place of SMAJ13A-E3/57T?
No - SMCJ13A-E3/9AT and SMAJ13A-E3/57T are not interchangeable without layout review. While both are unidirectional 13 V TVS diodes, they use different packages: SMCJ is DO-214AB (larger, 1500 W rating), SMAJ is DO-214AC (smaller, 400 W rating). Substituting SMCJ13A-E3/9AT requires verifying PCB pad dimensions, thermal relief, and mechanical clearance. The SMCJ13A-E3/9AT offers higher surge capacity but occupies more board area than the SMAJ13A-E3/57T.
SMCJ13A-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 69.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ13A-E3/9AT FAQ
1.How can I place an order for SMCJ13A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13A-E3/9AT 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 SMCJ13A-E3/9AT reliable?
The price and inventory of SMCJ13A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ13A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ13A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13A-E3/9AT?
SMCJ13A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13A-E3/9AT 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 SMCJ13A-E3/9AT?
For technical support, including SMCJ13A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ13A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ13A-E3/9AT 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 SMCJ13A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ13A-E3/9AT?
All SMCJ13A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13A-E3/9AT, 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 SMCJ13A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ13A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ13A-E3/9AT 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 …
