My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ48HE3/57T
- Part No.:
- SMCJ48HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ48HE3/57T.pdf
- Description:
- TVS DIODE 48VWM 85.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,867
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ48HE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 48 V standoff voltage (VWM), 53.3–58.9 V breakdown range (VBR), 77.4 V clamping voltage at 19.4 A peak pulse current (IPPM), 1500 W peak pulse power (PPPM), and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the SMCJ48HE3/57T datasheet, SMCJ48HE3/57T pinout, SMCJ48HE3/57T application, or SMCJ48HE3/57T equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 75 °C/W), RoHS-compliant matte tin plating, J-STD-002 solderability, and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode operates as a unidirectional clamping device, with cathode band marking indicating polarity. Its glass-passivated junction enables fast response (<1 ns) to transients, low incremental surge resistance, and stable clamping across temperature (–55 °C to +150 °C TJ).
Designed for surface-mount placement on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power handling per JEDEC-standard 10/1000 µs waveform, with derating above 25 °C ambient per Fig. 2 and thermal impedance curves confirming effective junction-to-lead heat transfer (RθJL = 15 °C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 53.3 V / 58.9 V at 1 mA - Confirmed breakdown threshold range ensuring reliable turn-on margin |
| VC @ IPPM | 77.4 V at 19.4 A - Clamped voltage during full-rated 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized surge waveform |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance defining temperature rise per watt dissipated without heatsink |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-214AB (SMCJ), molded in UL 94 V-0 rated compound, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to protected line's lower-potential side (e.g., GND or return) |
| Cathode | Reverse-biased clamping node | Connected to protected line's higher-potential side (e.g., 48 V rail); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMCJ package | Enables high-density PCB layout while maintaining 1500 W surge capacity |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced leakage drift |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS subsystems |
| J-STD-020 LF compliance | Confirms lead finish integrity after lead-free reflow, preventing dewetting or voiding |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump and inductive switching spikes in vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 48 V supply and chassis ground to clamp surges below IC absolute maximum ratings. Use Value: Limits transient voltage to ≤77.4 V during 1500 W events, preserving MCU, CAN transceivers, and power management ICs. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Front-end clamping element on 24 V or 48 V sensor supply lines to prevent ESD and cable discharge events. Use Value: Sub-1 ns response and 77.4 V clamping prevent latch-up or gate oxide damage in precision op-amps and ADC drivers. |
| Telecom DC Power Feeds | Consumer Equipment DC Input Protection |
Use Scenario: Securing 48 V phantom power inputs in VoIP phones and base station remote units. IC Role / Device Role / Timing Role: Primary surge suppression on PoE-derived or centralized 48 V distribution rails. Use Value: Withstands repeated 10/1000 µs transients up to 1500 W without parameter shift, meeting GR-1089-CORE requirements. | Use Scenario: Hardening USB-C PD or proprietary 48 V adapters against AC line coupling and lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on input stage of SMPS front-end, downstream of fuse and common-mode choke. Use Value: 48 V VWM ensures no leakage during normal operation; 77.4 V VC prevents overvoltage stress on primary-side controllers and MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/52T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for lower-energy transients; limited thermal margin in high-ambient industrial settings | Select when board space is constrained and surge threat level is ≤400 W |
| SMCJ48AHE3/57T | Same electrical specs and AEC-Q101 qualification; differs only in marking code (GFX vs. GFX with HE3 suffix) | No functional difference; identical performance and qualification status | Valid drop-in replacement where HE3 marking is not required for traceability |
Compared with SMAJ48A-E3/52T, SMCJ48HE3/57T provides 275 % higher surge power headroom and superior thermal management; versus SMCJ48AHE3/57T, it offers identical protection performance with verified AEC-Q101 compliance and same DO-214AB footprint.
Availability
SMCJ48HE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power feeds, and consumer DC input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ48HE3/57T 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, TVS, and MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where robustness and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the SMCJ48HE3/57T under maximum rated surge current?
The SMCJ48HE3/57T clamps to 77.4 V at its rated peak pulse current of 19.4 A under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal and represents the maximum voltage seen by downstream circuitry during full-rated transient events. The SMCJ48HE3/57T maintains this clamping performance across its qualified operating temperature range.
Is the SMCJ48HE3/57T suitable for automotive applications?
Yes, the SMCJ48HE3/57T is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads compliant with J-STD-002, MSL Level 1 handling, and guaranteed operation from –55 °C to +150 °C junction temperature. These attributes make the SMCJ48HE3/57T appropriate for engine control units, body electronics, and ADAS power domains where transient immunity is critical.
What does the "HE3" suffix indicate in SMCJ48HE3/57T?
The "HE3" suffix in SMCJ48HE3/57T denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this grade from commercial-only "E3" variants and confirms compliance with automotive reliability standards, including extended temperature cycling and high-temperature reverse bias testing. The SMCJ48HE3/57T meets all requirements specified in the Vishay document 88394 for HE3-marked devices.
How does the SMCJ48HE3/57T differ from the bi-directional SMCJ48CA variant?
The SMCJ48HE3/57T is unidirectional, with a defined cathode band and forward voltage drop (~3.5 V at 100 A), whereas SMCJ48CA is bi-directional and lacks polarity marking. The unidirectional SMCJ48HE3/57T provides lower leakage at VWM and better clamping symmetry for DC rail protection, while SMCJ48CA suits AC-coupled or dual-polarity signal lines. Their VBR, VC, and PPPM values are otherwise matched per datasheet Table 1.
What is the recommended PCB pad layout for optimal thermal and surge performance of the SMCJ48HE3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area for each terminal of the SMCJ48HE3/57T to achieve rated 1500 W pulse power and thermal resistance (RθJA = 75 °C/W). Use solid internal or external copper planes connected via multiple thermal vias; avoid narrow traces. The SMCJ48HE3/57T's DO-214AB outline requires precise land pattern adherence per Figure on page 4 of document 88394 to ensure mechanical stability and solder joint integrity during reflow.
SMCJ48HE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 85.5V
- Current - Peak Pulse (10/1000µs):
- 17.5A
- 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)
SMCJ48HE3/57T FAQ
1.How can I place an order for SMCJ48HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ48HE3/57T 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 SMCJ48HE3/57T reliable?
The price and inventory of SMCJ48HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ48HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ48HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ48HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ48HE3/57T?
SMCJ48HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ48HE3/57T 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 SMCJ48HE3/57T?
For technical support, including SMCJ48HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ48HE3/57T requirements.
6.How does Aetrix verify that SMCJ48HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ48HE3/57T 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 SMCJ48HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ48HE3/57T?
All SMCJ48HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ48HE3/57T, 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 SMCJ48HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ48HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ48HE3/57T 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 …
