My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ48CHE3/57T
- Part No.:
- SMCJ48CHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ48CHE3/57T.pdf
- Description:
- TVS DIODE 48VWM 85.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,839
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ48CHE3/57T from Vishay General Semiconductor is a surface-mount transient voltage suppressor (TVS) diode designed for bi-directional overvoltage protection in power and signal lines. It features a 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps transients to ≤77.4 V at 19.4 A, making it suitable for automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ48CHE3/57T datasheet, SMCJ48CHE3/57T pinout, SMCJ48CHE3/57T application, or SMCJ48CHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB package, 1.0 µA max reverse leakage at VWM, and compatibility with 10/1000 µs surge waveforms in harsh environments.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - no polarity marking on the device. Its glass-passivated junction ensures stable clamping performance under repetitive surge stress, and its low incremental surge resistance enables effective energy diversion during fast transients.
The device is rated for operation from –55 °C to +150 °C junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), supporting reliable performance on standard PCB copper pads (8.0 mm × 8.0 mm per terminal) without heatsinking.
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 1.0 mA - guaranteed breakdown threshold range for design margining |
| VC @ IPPM | 77.4 V at 19.4 A - clamped voltage during 10/1000 µs surge, defining protected circuit's max stress level |
| PPPM | 1500 W - peak transient power handling capability under standardized waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage ensures minimal standby current impact in battery-powered systems |
| TJ max | +150 °C - supports under-hood automotive and high-temperature industrial deployments |
| Package | DO-214AB (SMCJ) - industry-standard surface-mount outline with J-bend leads for automated placement |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with two J-bend terminals; no polarity marking for bi-directional operation; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Either terminal serves as input/output; no functional distinction - enables single-component protection across AC or differential lines |
| Case | Non-electrical mechanical interface | Plastic body provides insulation and mechanical anchoring; no thermal or electrical connection to internal die |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance |
| MSL Level 1 | Unlimited floor life at ≤30 °C / 60% RH - no baking required prior to reflow assembly |
| Glass passivated junction | Enhanced long-term stability of VBR and leakage under thermal and electrical stress |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets safety requirements for enclosed industrial and automotive modules |
| J-STD-020 LF peak = 260 °C | Compatible with standard lead-free reflow profiles without delamination or parametric shift |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply rails in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤77.4 V, preventing latch-up or permanent damage to downstream 40 V-rated ICs. | Use Scenario: Safeguarding analog inputs of PLC I/O modules connected to field transmitters exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Front-end transient absorber on signal conditioning paths before instrumentation amplifiers. Use Value: Sub-µA leakage preserves signal integrity in high-impedance measurement circuits while suppressing >1 kV surges. |
| Telecom Data Line Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bi-directional shunt protector on differential bus lines, referenced to local ground. Use Value: Symmetric clamping ensures equal protection for both A and B lines without polarity concerns during installation. | Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., washing machine control boards). IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or H-bridge outputs. Use Value: 1500 W PPPM rating handles repetitive 100–200 A inrush currents without degradation over product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/57T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VBR range | Suitable only for lower-energy transients; not AEC-Q101 qualified | Select when space-constrained and surge energy is <50% of SMCJ48CHE3/57T capability |
| SMCJ48AHE3/57T | Uni-directional variant; includes cathode band marking; otherwise identical ratings and package | Requires correct polarity orientation; unsuitable for AC or floating differential lines | Choose only when circuit topology enforces unidirectional current flow and polarity is fixed |
Compared with SMAJ48A-E3/57T and SMCJ48AHE3/57T, the SMCJ48CHE3/57T delivers 3.75× higher surge power handling and automotive qualification - critical for under-hood and safety-critical subsystems where uni-directional variants risk misapplication and smaller packages fail derating margins.
Availability
SMCJ48CHE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, telecom infrastructure, and consumer appliance designs requiring stable component supply across extended production lifecycles.
Supply support for SMCJ48CHE3/57T 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, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SMCJ series was engineered specifically for high-energy transient suppression in demanding environments - targeting automotive power distribution, industrial automation, and infrastructure equipment where failure modes must be rigorously controlled.
FAQ
What does the "HE3" suffix indicate in SMCJ48CHE3/57T?
The "HE3" suffix in SMCJ48CHE3/57T denotes RoHS-compliant construction with AEC-Q101 qualification - confirming automotive-grade reliability testing including temperature cycling, humidity bias, and surge endurance. This distinguishes it from commercial-grade "E3" variants and ensures suitability for under-hood and safety-critical applications where SMCJ48CHE3/57T is deployed.
Is SMCJ48CHE3/57T bi-directional or uni-directional?
SMCJ48CHE3/57T is a bi-directional TVS diode: it clamps transients equally in both polarities with identical VBR, VC, and IPPM specifications. Unlike uni-directional variants (e.g., SMCJ48AHE3/57T), it has no cathode band marking and requires no polarity alignment during PCB placement - simplifying layout for AC-coupled or floating signal lines.
What is the maximum clamping voltage of SMCJ48CHE3/57T and how is it measured?
The maximum clamping voltage (VC) of SMCJ48CHE3/57T is 77.4 V, measured at a peak pulse current (IPPM) of 19.4 A under the standardized 10/1000 µs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring downstream components rated for ≥80 V remain within safe operating limits.
Can SMCJ48CHE3/57T be used in place of a uni-directional TVS like SMCJ48AHE3/57T?
No - SMCJ48CHE3/57T is bi-directional and lacks polarity marking, while SMCJ48AHE3/57T is uni-directional with a cathode band. Substituting SMCJ48CHE3/57T into a uni-directional design may cause unintended conduction during normal reverse bias. Always verify circuit topology: use SMCJ48CHE3/57T only where symmetric clamping is required, such as across AC lines or differential buses.
What PCB pad layout is recommended for optimal thermal and surge performance of SMCJ48CHE3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad for each terminal of SMCJ48CHE3/57T to achieve rated PPPM and thermal dissipation. Smaller pads reduce surge current capability and increase junction temperature - potentially derating IPPM by up to 40% and accelerating parametric drift. The SMCJ48CHE3/57T datasheet Fig. 2 provides exact derating curves versus ambient temperature and pad size.
SMCJ48CHE3/57T 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ48CHE3/57T FAQ
1.How can I place an order for SMCJ48CHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ48CHE3/57T 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 SMCJ48CHE3/57T reliable?
The price and inventory of SMCJ48CHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ48CHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ48CHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ48CHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ48CHE3/57T?
SMCJ48CHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ48CHE3/57T 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 SMCJ48CHE3/57T?
For technical support, including SMCJ48CHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ48CHE3/57T requirements.
6.How does Aetrix verify that SMCJ48CHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ48CHE3/57T 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 SMCJ48CHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ48CHE3/57T?
All SMCJ48CHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ48CHE3/57T, 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 SMCJ48CHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ48CHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ48CHE3/57T 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 …
