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Vishay General Semiconductor - Diodes Division SMCJ15AHE3/57T
- Part No.:
- SMCJ15AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15AHE3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,050
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Product details
Overview
SMCJ15AHE3/57T 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 15 V standoff voltage (VWM), 24.4 V maximum clamping voltage (VC) at 61.5 A peak pulse current, and 1500 W peak pulse power dissipation with 10/1000 µs waveform - deployed on automotive ECUs, industrial sensor interfaces, and DC power input stages.
For engineers reviewing the SMCJ15AHE3/57T datasheet, SMCJ15AHE3/57T pinout, SMCJ15AHE3/57T application, or SMCJ15AHE3/57T equivalent, key selection criteria include clamping performance under 61.5 A surge, AEC-Q101 qualification for automotive use, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ15AHE3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ps) and low incremental surge resistance to limit transient overvoltage before downstream ICs or MOSFETs are damaged. Its breakdown voltage range is 16.7–18.5 V at 1.0 mA test current, with temperature coefficient of 0.088 %/°C ensuring stable clamping across -55 °C to +150 °C junction temperature range.
Designed for unidirectional protection only, it exhibits 1.0 µA maximum reverse leakage at 15 V standoff, and supports peak forward surge current of 200 A (8.3 ms half-sine). Thermal resistance is 75 °C/W junction-to-ambient (on recommended pad layout) and 15 °C/W junction-to-lead, enabling reliable operation without heatsinking in typical PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR min/max | 16.7 V / 18.5 V at 1.0 mA - Ensures consistent avalanche initiation across production lots and temperature. |
| VC @ IPPM | 24.4 V at 61.5 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on protected circuitry. |
| PPPM | 1500 W - Peak transient energy absorption capability; validates robustness against IEC 61000-4-5 Level 4 surges. |
| IFSM | 200 A - Single half-sine surge rating (8.3 ms); supports protection of high-current power rails. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Confirmed reliability for automotive applications including engine control, ADAS sensors, and body electronics. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground when VWM exceeded. |
| Anode | Reference/ground return | Typically tied to system ground plane; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable avalanche characteristics and long-term reliability under repeated surge stress. |
| Low-profile SMC package | Enables high-density PCB layouts while maintaining 1500 W surge capability in minimal footprint. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| 1.0 µA max reverse leakage @ VWM | Minimizes standby power loss and avoids false triggering in low-power sensor or battery-backed circuits. |
| Mounting on 8.0 mm × 8.0 mm copper pads | Provides thermal and current-handling performance matching datasheet ratings without external heatsink. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 12 V battery rail in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and LDO/regulator input. Use Value: Limits transients to ≤24.4 V during 61.5 A surges, preventing damage to 3.3 V/5 V logic and analog front-ends. |
Use Scenario: Analog output line (e.g., 4–20 mA loop) from pressure sensor in factory automation cabinet. IC Role / Device Role / Timing Role: Point-of-entry protection on signal line before ADC input or isolation amplifier. Use Value: Clamps ESD and inductive kickback to safe levels while adding <1 pF capacitance - no signal integrity impact. |
| DC-DC Converter Input Stage | Telecom Power Interface |
|
Use Scenario: 24 V input to isolated flyback converter powering PoE-powered devices. IC Role / Device Role / Timing Role: Primary-side transient suppressor upstream of input filter and rectifier. Use Value: Absorbs 1500 W surges without degradation, preserving converter reliability across 100,000+ surge cycles. |
Use Scenario: -48 V telecom power feed entering remote radio head enclosure. IC Role / Device Role / Timing Role: Polarity-aware protection on negative supply rail with cathode grounded. Use Value: Withstands repeated 10/1000 µs surges up to 61.5 A while maintaining <1 µA leakage at -15 V reverse bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15AHE3/A | Lower PPPM (400 W), smaller SMA package, same VWM/VC but reduced surge handling. | Suitable for space-constrained consumer electronics where 61.5 A surge is not required. | Select when board area is critical and surge threat level is below IEC 61000-4-5 Level 2. |
| SMCJ15CAHE3/57T | Bidirectional variant; identical VWM, VBR, and PPPM, but symmetrical clamping in both polarities. | Required for AC-coupled or floating signal lines where polarity reversal may occur. | Choose only if bidirectional protection is mandated - unidirectional SMCJ15AHE3/57T offers lower cost and simpler layout. |
Compared with SMAJ15AHE3/A, the SMCJ15AHE3/57T delivers 3.75× higher surge power handling in the same SMT footprint class; versus SMCJ15CAHE3/57T, it provides optimized clamping efficiency for DC-biased rails with no redundant reverse-polarity capability.
Availability
SMCJ15AHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, DC-DC converter inputs, and telecom power interfaces requiring stable component supply with full traceability and AEC-Q101 compliance.
Supply support for SMCJ15AHE3/57T 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where 1500 W surge immunity and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMCJ15AHE3/57T at its rated peak pulse current?
The SMCJ15AHE3/57T has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current of 61.5 A using a 10/1000 µs waveform. This value is measured per JEDEC standards and ensures downstream components see no more than 24.4 V during worst-case surge events. The SMCJ15AHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ15AHE3/57T qualified for automotive applications?
Yes, the SMCJ15AHE3/57T carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including temperature cycling, humidity bias, mechanical shock, and accelerated life testing required for under-hood and chassis-mounted automotive electronics. The SMCJ15AHE3/57T is routinely used in engine control modules, ADAS camera power supplies, and body control units.
How does the SMCJ15AHE3/57T differ from the bidirectional SMCJ15CAHE3/57T?
The SMCJ15AHE3/57T is unidirectional with cathode band marking and protects only against positive transients relative to ground, whereas the SMCJ15CAHE3/57T is bidirectional and clamps surges of either polarity. Both share identical VWM (15 V), VBR, and PPPM (1500 W), but the SMCJ15AHE3/57T offers lower cost and simpler layout for DC-biased applications. The SMCJ15AHE3/57T must be oriented correctly during placement.
What PCB pad layout is required to achieve the rated 1500 W surge capability for SMCJ15AHE3/57T?
To achieve the full 1500 W peak pulse power rating, the SMCJ15AHE3/57T must be mounted on minimum recommended copper pads: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal, per Vishay Document 88394. Smaller pads reduce thermal dissipation and surge current handling, potentially derating IPPM by up to 40%. The SMCJ15AHE3/57T datasheet provides exact dimensional drawings for SMC (DO-214AB) land patterns.
Does SMCJ15AHE3/57T have lead-free and halogen-free compliance?
Yes, the HE3 suffix on SMCJ15AHE3/57T denotes RoHS-compliant construction with matte tin-plated leads and halogen-free molding compound, meeting JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements. The SMCJ15AHE3/57T is fully compliant with EU RoHS Directive 2011/65/EU and IPC-1752 material declaration standards.
SMCJ15AHE3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ15AHE3/57T FAQ
1.How can I place an order for SMCJ15AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15AHE3/57T 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 SMCJ15AHE3/57T reliable?
The price and inventory of SMCJ15AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15AHE3/57T?
SMCJ15AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15AHE3/57T 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 SMCJ15AHE3/57T?
For technical support, including SMCJ15AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15AHE3/57T requirements.
6.How does Aetrix verify that SMCJ15AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15AHE3/57T 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 SMCJ15AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15AHE3/57T?
All SMCJ15AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15AHE3/57T, 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 SMCJ15AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ15AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15AHE3/57T Tags
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