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Vishay General Semiconductor - Diodes Division SMCJ26CAHE3_A/I
- Part No.:
- SMCJ26CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ26CAHE3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,383
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Product details
Overview
SMCJ26CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 26 V standoff voltage (VWM), 42.1 V maximum clamping voltage (VC) at 35.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ26CAHE3_A/I datasheet, SMCJ26CAHE3_A/I pinout, SMCJ26CAHE3_A/I application, or SMCJ26CAHE3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior across -55 °C to +150 °C operating range, and bidirectional symmetry means identical VBR min/max (28.9 V / 31.9 V) and VC performance in both polarities.
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 - confirming suitability for automotive under-hood and body-control module applications where reliability under thermal cycling and mechanical stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 28.9 V / 31.9 V - guaranteed breakdown voltage range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 42.1 V - clamped voltage seen by protected circuit during 35.6 A 10/1000 µs surge |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| ID @ VWM | 1.0 µA - leakage current at rated standoff voltage, ensuring minimal standby power loss |
| TJ max. | +150 °C - maximum junction temperature enabling operation in high-ambient environments like engine compartments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding heatsinking requirements on standard PCB layout |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | One terminal of bidirectional PN junction; conducts surge current when either terminal exceeds VBR relative to the other |
| Cathode | Transient current entry (reverse bias) | Second terminal of bidirectional PN junction; functionally identical to Anode due to symmetrical construction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal paths |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity, and mechanical shock - supports PPAP documentation for Tier 1 suppliers |
| Low incremental surge resistance | Enables tighter VC margin versus competing TVS devices - reduces voltage overshoot during fast-rising transients |
| MSL Level 1 rating | Compatible with standard lead-free reflow profiles up to 260 °C peak - no special baking or handling required pre-assembly |
| Glass passivated junction | Stable electrical characteristics over lifetime and environmental stress - prevents parameter drift in humid or high-vibration environments |
Applications
| Automotive Body Control Module | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN and CAN signal lines from load-dump and jump-start transients in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point, clamping surges before they reach transceiver ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) by limiting voltage to ≤42.1 V while absorbing 1500 W peaks. | Use Scenario: Safeguarding RS-485/CAN transceivers in factory automation PLC I/O modules exposed to motor drive noise and relay switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on differential bus lines (CAN_H/CAN_L), symmetrically suppressing ± transients without polarity constraints. Use Value: Prevents transceiver latch-up or damage during 10/1000 µs surges up to 35.6 A, with leakage <1.0 µA preserving bus bias stability. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machine control boards and HVAC blower circuits. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs, diverting energy away from MOSFETs and gate drivers. Use Value: Limits drain-source voltage spikes to ≤42.1 V during commutation, extending MOSFET lifetime and reducing EMI generation. | Use Scenario: Secondary-side overvoltage protection on 24 V DC input rails of VoIP phones and base station power management units. IC Role / Device Role / Timing Role: Standoff-rated protector between input and ground, activated only during abnormal line surges exceeding 26 V. Use Value: Blocks >1000 V transients per IEC 61000-4-5 (Combination Wave) while maintaining <1 µA leakage at nominal 24 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CAHE3_A/I | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Not suitable for 1500 W surge events; limited to low-energy transients in space-constrained consumer designs | Select only if board area is critical and surge energy is confirmed ≤400 W |
| SMCJ26AHE3_A/I | Unidirectional version; cathode band marking; same VWM/VBR/VC/PPPM but asymmetric conduction | Requires polarity-aware layout; unsuitable for AC or floating signals where bidirectional clamping is mandatory | Choose only for DC-biased rails where reverse conduction must be blocked |
Compared with SMCJ26CAHE3_A/I, SMAJ26CAHE3_A/I trades surge capacity for footprint reduction, while SMCJ26AHE3_A/I sacrifices bidirectional symmetry for unidirectional blocking - making SMCJ26CAHE3_A/I the sole choice when both high-energy handling and polarity-agnostic protection are required.
Availability
SMCJ26CAHE3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus interfaces, and consumer appliance motor controls requiring stable component supply across long production lifecycles.
Supply support for SMCJ26CAHE3_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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for AEC-Q101 compliance and robust clamping performance in automotive, industrial, and telecom infrastructure applications.
FAQ
What does the "CA" suffix indicate in SMCJ26CAHE3_A/I?
The "CA" suffix in SMCJ26CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied across its terminals. This eliminates polarity marking and simplifies layout for AC-coupled or floating signal lines.
Is SMCJ26CAHE3_A/I qualified for automotive applications?
Yes, SMCJ26CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HE3" suffix) and documentation. This qualification covers stress tests including temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating its use in automotive body control modules, infotainment systems, and powertrain peripherals.
What is the maximum clamping voltage of SMCJ26CAHE3_A/I under surge conditions?
The maximum clamping voltage (VC) of SMCJ26CAHE3_A/I is 42.1 V, measured at its rated peak pulse current (IPPM) of 35.6 A using the standard 10/1000 µs double-exponential waveform. This value defines the highest voltage imposed on the protected circuit during worst-case surge events.
How does the SMC (DO-214AB) package of SMCJ26CAHE3_A/I affect thermal performance?
The SMC (DO-214AB) package of SMCJ26CAHE3_A/I delivers a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This enables reliable power dissipation during repetitive surges and supports operation up to +150 °C junction temperature without derating in properly laid-out PCBs.
Can SMCJ26CAHE3_A/I replace unidirectional SMCJ26AHE3_A/I in existing designs?
No - SMCJ26CAHE3_A/I cannot directly replace SMCJ26AHE3_A/I without layout review, because the bidirectional version lacks polarity marking and conducts in both directions, whereas the unidirectional variant blocks reverse current and requires correct cathode orientation. Swapping may cause unintended conduction or failure to suppress certain transient polarities.
SMCJ26CAHE3_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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 35.6A
- 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)
SMCJ26CAHE3_A/I FAQ
1.How can I place an order for SMCJ26CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ26CAHE3_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 SMCJ26CAHE3_A/I reliable?
The price and inventory of SMCJ26CAHE3_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 SMCJ26CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ26CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ26CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ26CAHE3_A/I?
SMCJ26CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ26CAHE3_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 SMCJ26CAHE3_A/I?
For technical support, including SMCJ26CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ26CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ26CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ26CAHE3_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 SMCJ26CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ26CAHE3_A/I?
All SMCJ26CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ26CAHE3_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 SMCJ26CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ26CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ26CAHE3_A/I Tags
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