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Vishay General Semiconductor - Diodes Division SMCJ15CAHE3/57T
- Part No.:
- SMCJ15CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CAHE3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,449
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Product details
Overview
SMCJ15CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V standoff voltage (VWM), 24.4 V clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed across automotive sensor lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the SMCJ15CAHE3/57T datasheet, SMCJ15CAHE3/57T pinout, SMCJ15CAHE3/57T application, or SMCJ15CAHE3/57T equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT assembly on 8 mm × 8 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 bidirectional architecture ensures symmetrical clamping in both polarities, with breakdown voltage (VBR) specified at 16.7–18.5 V (min/max) at 1 mA test current - validated per ANSI/IEEE C62.35 standards.
Thermally, it sustains junction temperatures from –55 °C to +150 °C, with RθJA = 75 °C/W and RθJL = 15 °C/W. The device is glass passivated, RoHS-compliant, and qualified to AEC-Q101 for automotive use - confirmed by HE3 suffix and Vishay's QVGQ2 UL 497B recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - precise voltage threshold where avalanche conduction initiates under transient stress. |
| VC (Clamping Voltage) | 24.4 V at IPPM = 61.5 A - peak voltage seen by protected circuit during worst-case 10/1000 μs surge; determines IC survivability. |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for standardized 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - negligible standby current ensuring minimal signal loading and power loss in high-impedance interfaces. |
| TJ Range | –55 °C to +150 °C - full automotive-grade thermal envelope supporting under-hood and industrial control environments. |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for reflow and wave soldering. |
Pinout & Package
SMCJ15CAHE3/57T uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount case with matte tin-plated leads. Bidirectional construction means no cathode/anode marking; terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output path; identical clamping behavior in both directions - no polarity-dependent routing required. |
| Terminal 2 | Anode / Cathode (bidirectional) | Completes symmetrical transient shunt path; must be connected across protected line and ground (or rail-to-rail) with minimal trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces - supports long-term reliability under thermal cycling and vibration. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 61.5 A without degradation - meets IEC 61000-4-5 surge immunity requirements for industrial Ethernet and CAN FD lines. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage stress on downstream ICs - critical for protecting 3.3 V or 5 V logic interfaces with tight absolute maximum ratings. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates bake-out requirement in high-volume SMT lines. |
| Glass passivated junction | Ensures stable VBR over time and temperature - prevents parameter drift in harsh environments like factory automation or outdoor telecom cabinets. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
|
Use Scenario: Protecting LIN bus and analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and chassis ground - clamps spikes within nanoseconds to prevent MCU ADC or comparator latch-up. Use Value: Enables compliance with AEC-Q100 Grade 0 stress testing while maintaining signal integrity below 15 V nominal operation. |
Use Scenario: Safeguarding RS-485 transceivers and PLC digital inputs against lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across differential pair or single-ended line - limits transient overshoot to ≤24.4 V regardless of polarity. Use Value: Eliminates need for external series impedance or directional diodes, reducing BOM count and PCB area in space-constrained DIN-rail modules. |
| Telecom Interface Protection | Consumer Power Adapter ESD Guard |
|
Use Scenario: Shielding Ethernet PHY magnetics and PoE injectors from EFT and surge events in enterprise switches and base stations. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point - absorbs >90% of 1.2/50 μs surge energy before it reaches silicon. Use Value: Achieves IEC 61000-4-4 Level 4 (4 kV) and IEC 61000-4-5 Level 3 (1 kV) immunity without derating or parallel staging. |
Use Scenario: Adding secondary-side overvoltage protection on USB-C PD and Qi wireless charging adapters exposed to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) bidirectional clamp across VBUS and GND - suppresses ±8 kV contact discharge per IEC 61000-4-2. Use Value: Prevents latch-up in buck controllers and USB-PD policy engines without distorting high-speed CC line signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (24.4 V same but at lower IPPM = 16.4 A) | Suitable for cost-sensitive consumer designs with lower surge threat levels; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary. |
| SMCJ15CAHM3/57T | Identical electrical specs and AEC-Q101 qualification; halogen-free molding compound instead of standard RoHS-compliant material | Required for strict environmental compliance in EU automotive Tier 1 supply chains (e.g., VW TL 813) | Choose when halogen-free certification is mandated by OEM procurement specifications. |
Compared with SMCJ15CAHE3/57T, SMAJ15CA-E3/61T offers reduced surge handling in a smaller footprint for non-automotive use, while SMCJ15CAHM3/57T delivers identical protection performance with halogen-free compliance - enabling direct substitution where material restrictions apply.
Availability
SMCJ15CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O port hardening, and telecom interface surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMCJ15CAHE3/57T 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, and passive components for automotive, industrial, and computing markets.
The SMCJ series was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent clamping performance across temperature, lifetime, and surge repetition cycles.
FAQ
What is the clamping voltage of SMCJ15CAHE3/57T at its rated peak pulse current?
The SMCJ15CAHE3/57T has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 61.5 A using the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltages exceeding 24.4 V during such transient events - critical for safeguarding 3.3 V or 5 V logic devices. The SMCJ15CAHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ15CAHE3/57T suitable for automotive applications?
Yes, SMCJ15CAHE3/57T is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant and automotive-grade construction. It operates reliably from –55 °C to +150 °C, meets MSL Level 1 for lead-free reflow, and is UL 497B recognized (QVGQ2). These attributes make SMCJ15CAHE3/57T appropriate for under-hood ECUs, ADAS camera modules, and body control units where transient immunity and long-term stability are mandatory - confirmed in Vishay's official qualification report for the SMCJ family.
How does the bidirectional design of SMCJ15CAHE3/57T affect PCB layout?
The bidirectional design of SMCJ15CAHE3/57T eliminates polarity constraints - both terminals are functionally identical, so no cathode band orientation or directional placement is required. This simplifies layout by allowing placement across any signal line and ground (or rail-to-rail) without concern for anode/cathode alignment. Engineers can route traces symmetrically and minimize loop inductance without referencing markings, accelerating design iteration and reducing assembly errors. The SMCJ15CAHE3/57T achieves identical VBR and VC in both directions per datasheet Table 1.
What is the thermal resistance of SMCJ15CAHE3/57T, and how does it impact power dissipation?
The SMCJ15CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W. Under continuous DC conditions, its power dissipation (PD) is rated at 6.5 W at TA = 50 °C - meaning sustained operation above this requires heatsinking or derating. However, for transient suppression, thermal mass dominates; the device safely absorbs 1500 W for microseconds without exceeding TJ(max) = 150 °C, provided PCB copper pads meet the 8.0 mm × 8.0 mm minimum recommendation per Figure 2.
Can SMCJ15CAHE3/57T replace unidirectional TVS diodes in existing designs?
SMCJ15CAHE3/57T can replace unidirectional TVS diodes only if the circuit topology supports bidirectional clamping - such as differential lines, AC-coupled signals, or rail-to-rail protection. Unlike unidirectional parts (e.g., SMCJ15A), the SMCJ15CAHE3/57T conducts in both directions above VBR, so it must not be used where forward conduction would disrupt DC bias or cause latch-up. Always verify signal polarity and grounding scheme before substitution; the SMCJ15CAHE3/57T datasheet explicitly states bidirectional electrical characteristics apply in both directions.
SMCJ15CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- 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)
SMCJ15CAHE3/57T FAQ
1.How can I place an order for SMCJ15CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CAHE3/57T 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 SMCJ15CAHE3/57T reliable?
The price and inventory of SMCJ15CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CAHE3/57T?
SMCJ15CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CAHE3/57T 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 SMCJ15CAHE3/57T?
For technical support, including SMCJ15CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ15CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15CAHE3/57T 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 SMCJ15CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15CAHE3/57T?
All SMCJ15CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CAHE3/57T, 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 SMCJ15CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ15CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CAHE3/57T Tags
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