My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ15CA/54
- Part No.:
- SMBJ15CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CA/54.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,494
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ15CA/54 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 a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), commonly deployed to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ15CA/54 datasheet, SMBJ15CA/54 pinout, SMBJ15CA/54 application, or SMBJ15CA/54 equivalent, key selection criteria include bidirectional surge clamping capability, low clamping ratio (VC/VWM = 1.63), JEDEC-standard SMB package compatibility, and AEC-Q101 qualification availability for automotive-grade variants.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ns) and stable clamping under repetitive 10/1000 µs surges at 0.01% duty cycle.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C junction temperature. It meets UL 497B recognition and complies with J-STD-020 MSL level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V at 1.0 mA - Confirmed breakdown threshold range ensuring reliable turn-on margin |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage during 600 W transient, limiting stress on downstream components |
| IPPM | 24.6 A - Peak surge current handling capacity with 10/1000 µs waveform |
| PPPM | 600 W - Transient energy absorption rating defining protection robustness against lightning or switching surges |
| TJ max | +150 °C - Maximum junction temperature enabling use in high-ambient industrial environments |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; accepts surge current in either direction |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical PN junction; completes bidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard PCB layouts |
| 24.4 V clamping voltage at 24.6 A | Provides 6.4 V headroom below typical 30 V logic rail limits, preventing latch-up in protected ICs |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection fidelity for sub-100 ns edges |
| MSL level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or special handling |
| AEC-Q101 qualified option available | Validated for automotive powertrain and body electronics where reliability under thermal cycling is critical |
Applications
| Industrial Motor Drives | Telecom Power Supply Inputs |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing circuits against inductive kickback from relay or solenoid switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across DC bus or control line inputs. Use Value: Limits transient excursions to ≤24.4 V, preventing damage to 24 V-rated op-amps and isolated gate drivers. |
Use Scenario: Surge suppression on –48 V telecom rectifier outputs exposed to lightning-induced surges on long-line feeds. IC Role / Device Role / Timing Role: Primary-level TVS shunt element mounted at board edge before DC-DC converter input. Use Value: Absorbs 600 W pulses without degradation, maintaining output regulation integrity during repeated 10/1000 µs events. |
| Automotive Sensor Signal Lines | Consumer Appliance Control Boards |
|
Use Scenario: ESD and load-dump protection for LIN bus or analog sensor inputs in engine bay modules. IC Role / Device Role / Timing Role: Bidirectional clamping device placed between connector and MCU analog input pin. Use Value: Withstands ±30 kV contact ESD (IEC 61000-4-2) and clamps 12 V system load-dump spikes to safe levels. |
Use Scenario: Overvoltage safeguard on microcontroller reset lines and button interface traces in washing machine control units. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor bridging signal line to ground near IC pin. Use Value: Prevents false resets or spurious interrupts caused by 2 kV EFT bursts (IEC 61000-4-4) on 3.3 V/5 V rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 | Same electrical specs; RoHS-compliant commercial grade with 7" tape-and-reel packaging | No AEC-Q101 qualification; intended for non-automotive industrial use | Select when cost-sensitive volume production requires standard commercial-grade sourcing |
| SMBJ15CAHE3_B/H | Identical clamping and surge ratings; adds AEC-Q101 qualification and halogen-free compliance | Approved for automotive powertrain and chassis modules requiring extended temperature validation | Select when automotive OEM compliance (e.g., ISO/TS 16949 traceability) is mandatory |
Compared with SMBJ15CA/54, the E3/52 variant offers identical protection performance at lower cost for commercial systems, while the HE3_B/H version adds automotive qualification-neither is pin-compatible with unqualified variants but shares identical SMB footprint and thermal design rules.
Availability
SMBJ15CA/54 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supply inputs, automotive sensor signal lines, and consumer appliance control boards requiring stable component supply and consistent surge performance across production batches.
Supply support for SMBJ15CA/54 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 and application-specific optimization.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SMBJ15CA/54 at its rated peak pulse current?
The SMBJ15CA/54 has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current of 24.6 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ15CA/54 maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBJ15CA/54 unidirectional or bidirectional?
SMBJ15CA/54 is a bidirectional Transient Voltage Suppressor, as indicated by the "CA" suffix in its part number. It provides symmetrical clamping in both polarities, making it suitable for AC-coupled lines, differential buses, or any application where voltage transients may occur with either polarity. Unlike unidirectional variants (e.g., SMBJ15A), the SMBJ15CA/54 has no cathode band marking and exhibits matched VBR characteristics in forward and reverse directions.
Does SMBJ15CA/54 meet automotive qualification standards?
The base SMBJ15CA/54 is a commercial-grade device and not AEC-Q101 qualified. However, Vishay offers automotive-qualified versions under ordering codes such as SMBJ15CAHE3_B/H (RoHS-compliant and AEC-Q101 qualified) and SMBJ15CAHM3_B/H (halogen-free and AEC-Q101 qualified). These variants share identical electrical specifications with SMBJ15CA/54 but undergo additional stress testing for automotive use cases.
What is the thermal resistance of SMBJ15CA/54 from junction to ambient?
The SMBJ15CA/54 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value assumes natural convection cooling and is critical for calculating steady-state power dissipation limits. For higher-power applications, thermal relief via larger copper areas or heatsinking reduces effective RθJA, directly improving surge endurance in repetitive scenarios.
How does SMBJ15CA/54 compare to SMAJ15CA in terms of surge capability?
SMBJ15CA/54 delivers 600 W peak pulse power, whereas SMAJ15CA is rated for 400 W under the same 10/1000 µs waveform. The higher rating stems from the SMB package's larger thermal mass and lower RθJL (20 °C/W vs. ~30 °C/W for SMA), allowing SMBJ15CA/54 to sustain greater surge energy without thermal runaway. Both are bidirectional and share identical VWM and VC values, but SMBJ15CA/54 is preferred for high-energy industrial or telecom applications.
SMBJ15CA/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- 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):
- 24.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ15CA/54 FAQ
1.How can I place an order for SMBJ15CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CA/54 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 SMBJ15CA/54 reliable?
The price and inventory of SMBJ15CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15CA/54 is usually 5 days.
3.What payment methods are accepted for SMBJ15CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CA/54?
SMBJ15CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CA/54 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 SMBJ15CA/54?
For technical support, including SMBJ15CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CA/54 requirements.
6.How does Aetrix verify that SMBJ15CA/54 is sourced from the original manufacturer or authorized distributors?
All SMBJ15CA/54 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 SMBJ15CA/54 meets industry standards.
7.What is the process for return or replacement of SMBJ15CA/54?
All SMBJ15CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CA/54, 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 SMBJ15CA/54 part is unused and in its original packaging.
Return procedure for SMBJ15CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CA/54 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
