My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ15CHE3/9AT
- Part No.:
- SMCJ15CHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CHE3/9AT.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,543
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ15CHE3/9AT from Vishay is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection on signal and power lines. It features a 15 V stand-off voltage (VWM), 24.4 V clamping voltage (VC) at 61.5 A peak pulse current (IPPM), 1500 W peak pulse power (PPPM), and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the SMCJ15CHE3/9AT datasheet, SMCJ15CHE3/9AT pinout, SMCJ15CHE3/9AT application, or SMCJ15CHE3/9AT equivalent, this device is selected for high-energy transient suppression in automotive ECUs, industrial sensor interfaces, and telecom line protection where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCJ15CHE3/9AT operates as a bi-directional avalanche diode with symmetrical breakdown characteristics-minimum VBR of 16.7 V and maximum of 18.5 V at 1 mA test current. Its clamping behavior under 10/1000 µs surge waveforms ensures predictable voltage limiting during ESD, lightning-induced surges, and inductive switching transients.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling effective heat dissipation when mounted on 8.0 mm × 8.0 mm copper pads per terminal. The device sustains operation from –55 °C to +150 °C junction temperature and meets JESD201 Class 2 whisker resistance via HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 16.7 V / 18.5 V - Breakdown initiates within this range at 1 mA, defining turn-on threshold |
| VC @ IPPM | 24.4 V - Clamped voltage across terminals at 61.5 A peak pulse, limiting downstream stress |
| PPPM | 1500 W - Peak surge power handling capability with 10/1000 µs waveform |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off, ensuring minimal standby power loss |
| TJ max. | +150 °C - Maximum junction temperature, supporting under-hood automotive deployment |
| MSL Level | Level 1 (260 °C peak) - Compatible with standard lead-free reflow without baking |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional configuration with no polarity marking. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 mechanical robustness requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals conduct equally in both directions during overvoltage events; no cathode band marking |
| Case (body) | Thermal and mechanical interface | DO-214AB molded body provides UL 94 V-0 flammability rating and thermal path to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal stress and humidity |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| 1500 W peak pulse power | Supports protection against high-energy transients in 12 V/24 V vehicle systems and industrial PLC I/O |
| JESD201 Class 2 whisker resistance | Ensures interconnect integrity in high-reliability applications with extended thermal aging |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN bus and power supply inputs in BCMs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary TVS clamp on 12 V rail and signal lines, absorbing up to 1500 W surges without failure. Use Value: Prevents latch-up or destruction of microcontrollers and transceivers during ISO 16750-2 load dump tests (up to 35 V, 200 ms). | Use Scenario: Safeguarding RS-485/CAN bus transceivers connected to field wiring subject to induced lightning surges. IC Role / Device Role / Timing Role: Bi-directional shunt protector placed differential-mode across bus lines (CAN_H/CAN_L) and common-mode to ground. Use Value: Limits clamped voltage to 24.4 V during 10/1000 µs transients, keeping transceiver inputs within absolute maximum ratings. |
| Telecom DSL Line Interface | Consumer Appliance Motor Driver Input |
Use Scenario: Protecting ADSL/VDSL line cards from longitudinal surges coupled from outdoor telephone lines. IC Role / Device Role / Timing Role: First-stage surge absorber on tip/ring inputs, paired with GDT or PTC for coordinated protection. Use Value: Fast <1 ns response captures high-frequency components of lightning surges before they reach sensitive PHY ICs. | Use Scenario: Shielding BLDC motor driver ICs from back-EMF spikes generated during PWM commutation. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus input to clamp inductive kickback from motor windings. Use Value: Withstands repetitive 61.5 A pulses at 24.4 V clamping, preventing gate oxide damage in MOSFET half-bridges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (24.4 V same, but lower IPPM = 16.4 A) | Suitable for space-constrained, lower-energy circuits (e.g., USB port protection); not rated for automotive load dump | Select SMCJ15CHE3/9AT when 1500 W surge handling and AEC-Q101 compliance are required. |
| SMCJ15AHE3/9AT | Uni-directional variant (cathode-banded), identical VWM/VC/PPPM but asymmetric conduction; VF = 3.5 V at 100 A forward surge | Required only where DC bias exists and reverse conduction must be blocked (e.g., DC power rail with polarity-sensitive loads) | Choose SMCJ15CHE3/9AT for AC-coupled or bidirectional signal lines where polarity independence is mandatory. |
Compared with SMAJ15CA and SMCJ15AHE3/9AT, the SMCJ15CHE3/9AT delivers superior energy handling and automotive qualification while maintaining identical clamping performance-making it the preferred choice for high-reliability bi-directional protection where board space permits the larger SMCJ footprint.
Availability
SMCJ15CHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecommunications infrastructure requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ15CHE3/9AT 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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments-including automotive, industrial, and telecom applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What does the "HE3" suffix indicate in SMCJ15CHE3/9AT?
The HE3 suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It confirms the device meets automotive reliability standards-including temperature cycling, highly accelerated life testing (HALT), and mechanical robustness-unlike the commercial-grade E3 variant. The SMCJ15CHE3/9AT is fully validated for under-hood use and qualifies for Tier 1 automotive BOMs.
Is SMCJ15CHE3/9AT unidirectional or bidirectional, and how is polarity identified?
The SMCJ15CHE3/9AT is a bi-directional TVS diode, meaning it clamps voltage transients equally in both polarities. Unlike uni-directional variants (e.g., SMCJ15A), it carries no cathode band marking-its DO-214AB package is symmetric with no polarity designation. This makes it ideal for AC-coupled lines, differential buses like CAN or RS-485, and any application where voltage reversal may occur.
What is the clamping voltage of SMCJ15CHE3/9AT and how is it measured?
The SMCJ15CHE3/9AT has a maximum clamping voltage (VC) of 24.4 V, measured at 61.5 A peak pulse current (IPPM) using a standardized 10/1000 µs double-exponential surge waveform. This value represents the maximum voltage imposed on protected circuitry during worst-case transient events-and is guaranteed across the full operating temperature range (–55 °C to +150 °C) per Vishay Document Number 88394.
Can SMCJ15CHE3/9AT replace SMCJ15AHE3/9AT in a design?
No-SMCJ15CHE3/9AT cannot directly replace SMCJ15AHE3/9AT without circuit review. While both share identical VWM (15 V), VC (24.4 V), and PPPM (1500 W), the former is bi-directional and the latter is uni-directional with a defined cathode. Substitution would allow reverse conduction in DC-biased paths, risking latch-up or damage. Use SMCJ15CHE3/9AT only where true bi-directional clamping is required.
What PCB layout guidance applies to SMCJ15CHE3/9AT for optimal thermal and electrical performance?
For optimal performance, mount the SMCJ15CHE3/9AT on minimum 8.0 mm × 8.0 mm copper pads per terminal (per Fig. 2 in Vishay Doc. 88394), with thermal vias recommended beneath pads to inner ground planes. Keep traces short and wide to minimize inductance-critical for preserving sub-1 ns response. Avoid routing sensitive signals near the device body, and ensure clearance matches IPC-2221B for 24.4 V clamping margin.
SMCJ15CHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 55.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ15CHE3/9AT FAQ
1.How can I place an order for SMCJ15CHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CHE3/9AT 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 SMCJ15CHE3/9AT reliable?
The price and inventory of SMCJ15CHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15CHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ15CHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CHE3/9AT?
SMCJ15CHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CHE3/9AT 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 SMCJ15CHE3/9AT?
For technical support, including SMCJ15CHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CHE3/9AT requirements.
6.How does Aetrix verify that SMCJ15CHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ15CHE3/9AT 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 SMCJ15CHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ15CHE3/9AT?
All SMCJ15CHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CHE3/9AT, 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 SMCJ15CHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ15CHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CHE3/9AT 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 …
