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Vishay General Semiconductor - Diodes Division SMBJ15C-E3/5B
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- Part No.:
- SMBJ15C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15C-E3/5B.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,025
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Product details
Overview
SMBJ15C-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal 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), making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ15C-E3/5B datasheet, SMBJ15C-E3/5B pinout, SMBJ15C-E3/5B application, or SMBJ15C-E3/5B equivalent, key selection criteria include its unidirectional polarity, 1.0 µA max reverse leakage at 15 V, 16.7–18.5 V breakdown voltage range (VBR), 150 °C max junction temperature, and compliance with AEC-Q101 when ordered with HE3/HM3 suffixes.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 15 V and rapidly transitions to low-impedance conduction above its breakdown threshold to divert surge energy away from protected circuitry. Its glass-passivated junction ensures stable performance under repetitive transient stress, and its MSL Level 1 rating supports lead-free reflow without popcorn cracking.
The SMBJ15C-E3/5B delivers 600 W peak pulse power handling with a 10/1000 µs waveform at 0.01% duty cycle, and exhibits low incremental surge resistance - critical for minimizing voltage overshoot during fast-rising transients such as ESD or inductive switching events. Its thermal resistance (RθJA = 100 °C/W) assumes mounting on 0.2" × 0.2" copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC bias limit for protected line. |
| VBR (min/max) | 16.7 V / 18.5 V at 1.0 mA - Confirmed breakdown range ensures reliable triggering margin above VWM with process tolerance. |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage seen by downstream circuit during worst-case 600 W surge; determines protection level for 3.3 V/5 V/12 V ICs. |
| IPPM | 24.6 A - Peak surge current capability under 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 3/4 surges. |
| PPPM | 600 W - Peak pulse power rating; enables single-device protection for moderate-energy transients without external series impedance. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in enclosed industrial enclosures or near heat-generating components. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or common return path; completes conduction path during transient clamp event. |
| Cathode | High-side connection point | Connected to protected line (e.g., VCC, signal input); carries full surge current into anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-diode protection against high-energy transients without derating or parallel staging. |
| 24.4 V clamping voltage at 24.6 A | Provides tight voltage limiting for 12 V systems - keeps protected ICs below absolute maximum ratings during surge. |
| 1.0 µA max reverse leakage at VWM | Minimizes standby power loss and avoids false triggering in low-current sensor or battery-powered circuits. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without moisture sensitivity concerns or pre-bake requirements. |
| Glass passivated junction | Ensures long-term stability of breakdown characteristics and low parameter drift across temperature and life cycles. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between driver output and ground, conducting only during negative-going transients. Use Value: Limits voltage excursion to ≤24.4 V, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces while surviving >100,000 switching cycles. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff protector on 12 V supply rail upstream of LDO regulators and CAN/LIN transceivers. Use Value: Withstands 600 W pulses per ISO 7637-2 Pulse 1/2b, maintaining <1 µA leakage to avoid battery drain in sleep mode. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Input-stage protection for AC-DC adapters and PoE injectors subjected to lightning-induced surges on primary-side DC bus. IC Role / Device Role / Timing Role: Primary-side TVS on +48 V or +54 V intermediate bus, clamping transients before DC-DC converters. Use Value: 24.4 V clamping ensures secondary-side 12 V/5 V rails remain within safe operating area during 10/1000 µs surges up to 24.6 A. |
Use Scenario: ESD and EFT protection for touch panel controllers and microcontroller reset lines in washing machines and HVAC units. IC Role / Device Role / Timing Role: Localized TVS on 3.3 V I²C and reset lines, placed adjacent to connector entry points. Use Value: Sub-µA leakage preserves low-power sleep states; fast response (<1 ns) prevents data corruption during 8 kV contact ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/5B | Same VWM (15 V), identical VC (24.4 V), but lower IPPM (24.6 A vs. 24.6 A - same value; note: SMBJ15A and SMBJ15C share identical electrical specs per datasheet Table 1) | No functional difference; "A" and "C" suffixes denote same unidirectional variant - "C" is legacy marking; both meet identical specifications. | Select SMBJ15A-E3/5B if sourcing from distributors listing only "A" suffix; electrically interchangeable with SMBJ15C-E3/5B. |
| SMCJ15A-E3/57T | Higher power rating (1500 W), larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), same VWM/VC but higher IPPM (109 A). | Required where system-level surge testing exceeds 600 W (e.g., IEC 61000-4-5 Level 4), or where board layout allows larger footprint. | Choose SMCJ15A-E3/57T only when 600 W is insufficient; SMBJ15C-E3/5B remains optimal for space-constrained 600 W applications. |
Compared with SMBJ15A-E3/5B (identical electrical specs, alternate marking) and SMCJ15A-E3/57T (higher-power, larger-package alternative), SMBJ15C-E3/5B offers the optimal balance of 600 W surge capability, SMB footprint efficiency, and compatibility with high-volume SMT assembly - making it preferred for cost-sensitive, space-limited industrial and automotive modules.
Availability
SMBJ15C-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, RoHS-compliant commercial-grade TVS protection, and tape-and-reel delivery for automated manufacturing.
Supply support for SMBJ15C-E3/5B 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 qualification.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, automotive electronics, and telecom infrastructure where consistent clamping performance and AEC-Q101 readiness are critical.
FAQ
What is the polarity configuration of SMBJ15C-E3/5B?
SMBJ15C-E3/5B is a unidirectional TVS diode, meaning it conducts only in reverse bias (cathode positive relative to anode) during overvoltage events. The cathode is marked by a band on the SMB package body. It does not conduct in forward direction beyond typical diode forward voltage (~3.5 V at 50 A), and is not intended for bidirectional protection - for that, SMBJ15CA-E3/5B would be used instead.
Does SMBJ15C-E3/5B meet AEC-Q101 qualification?
SMBJ15C-E3/5B itself is the commercial-grade RoHS-compliant version (E3 suffix). AEC-Q101 qualification is available under the HE3 suffix (e.g., SMBJ15AHE3_B/I), which includes additional stress testing for automotive use. While SMBJ15C-E3/5B shares identical electrical specs and construction, it is not certified to AEC-Q101 unless explicitly ordered with HE3 or HM3 suffixes.
What is the maximum clamping voltage of SMBJ15C-E3/5B under surge conditions?
The maximum clamping voltage (VC) of SMBJ15C-E3/5B is 24.4 V, measured at its peak pulse current (IPPM) of 24.6 A using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across temperature and lifetime, and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SMBJ15C-E3/5B replace SMBJ15A-E3/5B in existing designs?
Yes - SMBJ15C-E3/5B and SMBJ15A-E3/5B are electrically identical per Vishay's datasheet (Document Number: 88392), sharing identical VWM, VBR, VC, IPPM, and thermal specs. The "C" and "A" suffixes reflect historical marking variants; both are unidirectional and fully interchangeable without PCB or firmware changes.
What is the thermal resistance of SMBJ15C-E3/5B, and how does it affect layout?
SMBJ15C-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under sustained 5.0 W power dissipation, designers must ensure adequate copper area and avoid excessive ambient temperature - undersized pads will cause premature thermal derating of surge capability.
SMBJ15C-E3/5B 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 22.3A
- 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)
SMBJ15C-E3/5B FAQ
1.How can I place an order for SMBJ15C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15C-E3/5B 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 SMBJ15C-E3/5B reliable?
The price and inventory of SMBJ15C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ15C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15C-E3/5B?
SMBJ15C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15C-E3/5B 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 SMBJ15C-E3/5B?
For technical support, including SMBJ15C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15C-E3/5B requirements.
6.How does Aetrix verify that SMBJ15C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ15C-E3/5B 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 SMBJ15C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ15C-E3/5B?
All SMBJ15C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15C-E3/5B, 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 SMBJ15C-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ15C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15C-E3/5B Tags
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