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Vishay General Semiconductor - Diodes Division SMBJ48CAHE3_A/H
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- Part No.:
- SMBJ48CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ48CAHE3_A/H.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,276
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Product details
Overview
SMBJ48CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features 48 V stand-off voltage (VWM), 77.4 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ48CAHE3_A/H datasheet, SMBJ48CAHE3_A/H pinout, SMBJ48CAHE3_A/H application, or SMBJ48CAHE3_A/H equivalent, key selection criteria include bidirectional transient suppression capability, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, and compatibility with automated SMT assembly on PCBs requiring UL 94 V-0 compliant molding compound.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, while low incremental surge resistance enables effective energy diversion during fast transients like ESD or inductive switching spikes.
The SMBJ48CAHE3_A/H is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. It delivers 77.4 V clamping at 7.8 A IPPM, with 0.103 %/°C temperature coefficient of VBR - critical for thermal stability in automotive-grade designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 53.3 V / 58.9 V at 1 mA - guaranteed avalanche breakdown range defining turn-on threshold |
| VC @ IPPM | 77.4 V at 7.8 A - clamped voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 600 W - peak transient power it can absorb without failure under standardized waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage ensuring minimal standby power loss and signal integrity |
| TJ max | +150 °C - enables operation in under-hood automotive or high-temperature industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm x 4.06 mm footprint |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction mode | Not functional in TVS clamping operation; defines terminal symmetry in bidirectional structure |
| Cathode | Current exit point in forward conduction mode | Not functional in TVS clamping operation; paired with Anode to enable symmetrical reverse-biased avalanche |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 600 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Load Dump surges without degradation |
| UL 94 V-0 molding compound | Ensures flame-retardant PCB mounting in safety-critical consumer and industrial systems |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without moisture sensitivity concerns |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream ICs during transient events |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive kickback from relay coils and solenoid actuators. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across power supply rails and signal inputs. Use Value: Limits transient voltage to ≤77.4 V during 10/1000 µs surges, preventing latch-up or permanent damage to 5 V or 3.3 V logic interfaces. |
Use Scenario: Surge protection on LIN bus lines and sensor inputs (e.g., ambient temperature, door position) exposed to battery transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed directly at connector entry points before signal conditioning circuitry. Use Value: Maintains 48 V VWM compatibility with 12 V vehicle systems while suppressing ±100 V spikes per ISO 16750-2. |
| Telecom Power Supply Inputs | Consumer Appliance Control Boards |
Use Scenario: Input-stage protection for AC/DC adapters and PoE-powered devices subjected to lightning-induced surges on primary-side DC rails. IC Role / Device Role / Timing Role: Primary-line TVS connected between input rail and ground, upstream of bulk capacitors. Use Value: Clamps 600 W transients within 1 ns response time, preserving upstream rectifier and downstream DC-DC converter reliability. |
Use Scenario: ESD and EFT protection on user-interface buttons, display backlight controls, and microcontroller reset lines in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to connectors and switches to minimize trace inductance. Use Value: Provides <1 µA leakage at 48 V, avoiding false triggering of low-power wake-up circuits during standby mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM specs, RoHS-compliant | Lacks automotive qualification; suitable for industrial/commercial use only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SAC48CA | Same VWM (48 V) but lower PPPM (400 W); DO-214AB package (slightly larger) | Reduced surge handling margin; requires layout adjustment for footprint compatibility | Choose only if board space allows DO-214AB and system-level surge requirements are ≤400 W |
Compared with SMBJ48CAHE3_A/H, SMBJ48CA-E3/52 offers identical electrical performance without automotive qualification, while SAC48CA trades peak power rating and package size for cost-sensitive non-automotive designs - making SMBJ48CAHE3_A/H optimal where AEC-Q101 compliance and 600 W robustness are mandatory.
Availability
SMBJ48CAHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ48CAHE3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-volume manufacturability.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are essential design requirements.
FAQ
What is the clamping voltage of SMBJ48CAHE3_A/H at its rated peak pulse current?
The SMBJ48CAHE3_A/H has a maximum clamping voltage (VC) of 77.4 V at 7.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for protected circuits during surge events. The SMBJ48CAHE3_A/H maintains this clamping performance across its full operating temperature range.
Is SMBJ48CAHE3_A/H qualified for automotive applications?
Yes, SMBJ48CAHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. This certification confirms its suitability for automotive electronic systems including body control modules, infotainment interfaces, and sensor signal conditioning. The SMBJ48CAHE3_A/H undergoes stress testing for temperature cycling, humidity, and mechanical shock per AEC-Q101 requirements.
What does the "CA" suffix mean in SMBJ48CAHE3_A/H?
The "CA" suffix in SMBJ48CAHE3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., SMBJ48A), the SMBJ48CAHE3_A/H has no cathode marking and functions identically whether voltage is applied positive-to-negative or negative-to-positive across its terminals.
What is the maximum operating temperature for SMBJ48CAHE3_A/H?
The SMBJ48CAHE3_A/H supports an operating junction temperature range of -55 °C to +150 °C. This wide range enables deployment in under-hood automotive locations, industrial enclosures with limited airflow, and outdoor telecom equipment. Its thermal resistance (RθJA) is 100 °C/W when mounted on minimum recommended copper pads.
How does SMBJ48CAHE3_A/H differ from SMBJ48AHE3_A/H?
SMBJ48CAHE3_A/H is bidirectional, while SMBJ48AHE3_A/H is unidirectional - meaning the latter conducts only in reverse bias and requires correct polarity placement on PCBs. The SMBJ48CAHE3_A/H eliminates orientation concerns and protects against voltage reversals, making it preferred for AC-coupled lines or systems where polarity cannot be guaranteed during fault conditions.
SMBJ48CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ48CAHE3_A/H FAQ
1.How can I place an order for SMBJ48CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ48CAHE3_A/H 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 SMBJ48CAHE3_A/H reliable?
The price and inventory of SMBJ48CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ48CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ48CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ48CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ48CAHE3_A/H?
SMBJ48CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ48CAHE3_A/H 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 SMBJ48CAHE3_A/H?
For technical support, including SMBJ48CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ48CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ48CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ48CAHE3_A/H 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 SMBJ48CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ48CAHE3_A/H?
All SMBJ48CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ48CAHE3_A/H, 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 SMBJ48CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ48CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ48CAHE3_A/H Tags
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