My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ12CAHE3_A/I
- Part No.:
- SMCJ12CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ12CAHE3_A/I.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,121
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ12CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 13.3 V to 14.7 V breakdown voltage at 1 mA test current, and 19.9 V maximum clamping voltage at 75.4 A peak pulse current. It protects sensitive signal lines and power rails in automotive sensor interfaces and industrial control I/O circuits.
For engineers reviewing the SMCJ12CAHE3_A/I datasheet, SMCJ12CAHE3_A/I pinout, SMCJ12CAHE3_A/I application, or SMCJ12CAHE3_A/I equivalent, this device is selected for robust ESD and lightning surge immunity in AEC-Q101 qualified systems where bidirectional clamping, low leakage (<5 µA at 12 V), and MSL Level 1 reflow compatibility are required.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns) to transients such as ISO 7637-2 pulses or IEC 61000-4-5 surges.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads. Its 0.083 %/°C temperature coefficient of VBR supports predictable clamping behavior across automotive operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients like load dump or lightning-induced surges without failure |
| Breakdown Voltage VBR (min/max) | 13.3 V / 14.7 V at 1 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| Standoff Voltage VWM | 12 V - maximum continuous reverse working voltage before significant leakage begins |
| Maximum Clamping Voltage VC | 19.9 V at 75.4 A IPPM - limits protected circuit voltage during worst-case surge event |
| Reverse Leakage ID | ≤5 µA at 12 V - ensures minimal power loss and signal integrity in standby or low-power modes |
| Operating Temperature Range | −55 °C to +150 °C - supports under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Terminal 1) | Anode/Cathode terminal pair | Bidirectional operation means either terminal serves as cathode depending on transient polarity; no band marking |
| Anode (Terminal 2) | Anode/Cathode terminal pair | Identical electrical role to Terminal 1; symmetrical conduction enables AC line protection without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables single-device protection against severe transients including ISO 16750-2 load dump and IEC 61000-4-5 Level 4 surges |
| AEC-Q101 qualification (HE3 suffix) | Confirms reliability for automotive applications including engine control units, ADAS sensors, and body electronics |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C peak reflow profile without baking preconditioning |
| Glass-passivated junction | Provides stable VBR tolerance, low leakage drift, and long-term reliability under thermal cycling |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge) |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from battery transients and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADCs by limiting input voltage to ≤19.9 V during 75.4 A surge events. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input line and ground to absorb repetitive 1500 W surges without degradation. Use Value: Maintains system uptime by eliminating false triggering and component failure caused by 10/1000 µs transients up to ±1 kV. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control Board |
|
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs, coordinated with secondary GDT or polymer PTC for multi-stage protection. Use Value: Achieves IEC 61000-4-5 compliance with <500 ns response time and clamping below transceiver absolute maximum ratings. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers on washing machine motor control boards from back-EMF spikes during brushless DC motor commutation. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to MOSFET source/drain pins to suppress sub-100 ns switching transients. Use Value: Extends MCU lifespan by preventing cumulative gate oxide damage from repeated 12 V–19.9 V clamped voltage excursions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CAHE3_A/I | Lower PPPM (400 W), same VBR/VWM/VC specs, SMA package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer designs with lower surge threat levels (IEC 61000-4-2 only) | Select when board area is critical and surge energy does not exceed 400 W; verify thermal derating on small pads |
| SMCJ12CAHM3_A/I | Halogen-free variant, identical electrical specs and AEC-Q101 qualification, same SMC package | Required for RoHS-compliant automotive programs mandating halogen-free materials in final assembly | Choose for Tier 1 automotive BOMs requiring halogen-free certification while retaining full performance parity |
Compared with SMCJ12CAHE3_A/I, SMAJ12CAHE3_A/I trades surge capacity for compactness, whereas SMCJ12CAHM3_A/I delivers identical protection with halogen-free compliance-making the HE3 version optimal for general AEC-Q101 applications where material restrictions are not enforced.
Availability
SMCJ12CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply with AEC-Q101 validation and MSL Level 1 reflow readiness.
Supply support for SMCJ12CAHE3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMCJ series is engineered specifically for high-power transient suppression in harsh environments, emphasizing AEC-Q101 qualification, low clamping ratio, and robust surge endurance for mission-critical electronics.
FAQ
What is the clamping voltage of SMCJ12CAHE3_A/I at its rated peak pulse current?
The SMCJ12CAHE3_A/I has a maximum clamping voltage (VC) of 19.9 V at its rated peak pulse current (IPPM) of 75.4 A, measured using a 10/1000 µs waveform. This value ensures downstream ICs remain within safe operating voltage limits during standardized surge events. The SMCJ12CAHE3_A/I maintains this clamping performance across its full operating temperature range of −55 °C to +150 °C.
Is SMCJ12CAHE3_A/I suitable for automotive applications?
Yes, the SMCJ12CAHE3_A/I is AEC-Q101 qualified and manufactured with RoHS-compliant materials under Vishay's HE3 automotive-grade process. It meets requirements for engine control, ADAS sensor interfaces, and body electronics where sustained operation at 150 °C and resistance to thermal cycling and mechanical shock are mandatory. The SMCJ12CAHE3_A/I carries full qualification documentation traceable to Vishay's certified test reports.
How does the bidirectional design of SMCJ12CAHE3_A/I affect PCB layout?
The bidirectional nature of SMCJ12CAHE3_A/I eliminates polarity constraints during placement-no cathode band marking is present, and either terminal functions identically under reverse or forward transient conditions. This simplifies layout for AC-coupled lines like RS-485 or CAN, reduces assembly errors, and avoids orientation-dependent protection gaps. The SMCJ12CAHE3_A/I requires symmetric 8 mm × 8 mm copper pads per terminal for optimal thermal and surge performance.
What is the standoff voltage rating of SMCJ12CAHE3_A/I, and why does it matter?
The standoff voltage (VWM) of SMCJ12CAHE3_A/I is 12 V, meaning it remains in high-impedance state with ≤5 µA leakage up to this DC or RMS voltage. This rating ensures reliable operation on 12 V automotive buses or industrial 24 V lines without false triggering or power loss. Exceeding VWM risks premature conduction and thermal runaway; thus, the SMCJ12CAHE3_A/I must be applied only where normal operating voltage stays ≤12 V.
Does SMCJ12CAHE3_A/I require special handling during reflow soldering?
No-SMCJ12CAHE3_A/I is rated MSL Level 1 per J-STD-020, permitting unlimited floor life and compatibility with standard lead-free reflow profiles peaking at 260 °C. No baking or dry-pack handling is needed. Its matte tin-plated leads meet J-STD-002 solderability requirements, ensuring consistent wetting and joint integrity. The SMCJ12CAHE3_A/I is optimized for high-yield automated placement and reflow in volume manufacturing.
SMCJ12CAHE3_A/I 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 75.4A
- 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)
SMCJ12CAHE3_A/I FAQ
1.How can I place an order for SMCJ12CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ12CAHE3_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 SMCJ12CAHE3_A/I reliable?
The price and inventory of SMCJ12CAHE3_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 SMCJ12CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ12CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ12CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ12CAHE3_A/I?
SMCJ12CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ12CAHE3_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 SMCJ12CAHE3_A/I?
For technical support, including SMCJ12CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ12CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ12CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ12CAHE3_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 SMCJ12CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ12CAHE3_A/I?
All SMCJ12CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ12CAHE3_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 SMCJ12CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ12CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ12CAHE3_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
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 …
