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Vishay General Semiconductor - Diodes Division SMBJ15C-E3/52
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- Part No.:
- SMBJ15C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15C-E3/52.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,835
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Product details
Overview
SMBJ15C-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V clamping voltage (VC) at 24.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, automotive body control modules, and industrial sensor interfaces.
For engineers reviewing the SMBJ15C-E3/52 datasheet, SMBJ15C-E3/52 pinout, SMBJ15C-E3/52 application, or SMBJ15C-E3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant commercial-grade construction, and direct replacement guidance for circuit-level ESD and lightning transient protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its VWM = 15 V and fully clamps within <1 ps to limit transients to ≤24.4 V at 24.6 A. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while MSL Level 1 moisture sensitivity supports standard reflow without preconditioning.
The device is rated for TJ = –55 °C to +150 °C operation, with RθJA = 100 °C/W and RθJL = 20 °C/W thermal resistance, enabling reliable performance on 5.0 mm × 5.0 mm copper pads per terminal. It meets UL 497B recognition (QVGQ2) and is RoHS-compliant per base P/N-E3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable triggering above nominal rail. |
| VC (Clamping Voltage) | 24.4 V at IPPM = 24.6 A (10/1000 µs) - Peak voltage seen by protected IC during worst-case surge; must be below downstream IC's absolute max rating. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability; validated per Fig. 1 derating curve up to TA = 125 °C. |
| IPPM (Peak Pulse Current) | 24.6 A - Maximum non-repetitive surge current it can shunt without failure; derived from VC and PPPM. |
| TJmax | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow. |
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 types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point; completes clamping path during transient events. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 15 V supply rail); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) on 12–24 V systems without external series impedance. |
| 24.4 V clamping at 24.6 A | Ensures protected 15 V logic or MCU I/O remains below 25 V absolute maximum rating during full-rated surge event. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection fidelity. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without baking or special handling. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance requirements; suitable for industrial and consumer applications without AEC-Q101 qualification overhead. |
Applications
| Industrial Motor Drive Control | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of 12 V supply inputs to H-bridge gate drivers and microcontroller power rails against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly at power entry point to absorb >100 A transients before they reach sensitive silicon. Use Value: Prevents latch-up or permanent damage to 15 V-rated CAN transceivers and LDO regulators during 12 V system switching events. |
Use Scenario: Safeguarding LIN bus transceiver VCC pins and window lift motor driver inputs from battery reversal and jump-start spikes. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between LIN VCC and chassis ground, activated only during overvoltage excursions. Use Value: Maintains LIN communication integrity by limiting VCC to ≤24.4 V during 24 V jump-start conditions, avoiding regulator shutdown. |
| Industrial Sensor Signal Conditioning | Consumer Appliance Power Supply Input |
Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors from ESD and relay contact bounce in HVAC control boards. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 15 V) unidirectional clamp on 15 V bias rail feeding op-amp sensor amplifiers. Use Value: Preserves signal accuracy by preventing forward conduction during normal operation while clamping ±30 kV ESD events per IEC 61000-4-2. |
Use Scenario: Overvoltage suppression on primary-side 15 V auxiliary supply in smart washing machine SMPS designs. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS placed across bulk capacitor to suppress MOV-induced ringing and lightning-induced surges. Use Value: Extends service life of optocouplers and PWM controllers by limiting transient overvoltage stress on 15 V bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Identical electrical specs and package; "A" suffix denotes same unidirectional configuration as "C" in Vishay's legacy marking convention - confirmed identical in VWM, VBR, VC, and PPPM. | No functional difference; both rated for 15 V DC rail protection with same clamping behavior and thermal profile. | Select SMBJ15A-E3/52 if sourcing from distributors listing legacy "A" nomenclature; functionally interchangeable with SMBJ15C-E3/52. |
| 1.5SMC15A | Same VWM = 15 V, but larger SMC (DO-214AB) package (4.5 mm × 3.9 mm vs. SMB's 4.6 mm × 3.9 mm); 1.5 kW rating (vs. 600 W) allows higher single-pulse energy handling. | Requires PCB layout change due to larger footprint and higher thermal mass; suited for higher-energy surge environments where 600 W is marginal. | Choose 1.5SMC15A only when surge duty cycle or energy level exceeds SMBJ15C-E3/52's 600 W rating - not a drop-in replacement. |
Compared with SMBJ15C-E3/52, SMBJ15A-E3/52 offers identical protection performance in the same SMB package, while 1.5SMC15A provides higher pulse power headroom at the cost of board space and thermal response time - making SMBJ15C-E3/52 optimal for space-constrained 15 V rail protection where 600 W suffices.
Availability
SMBJ15C-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer appliance power supplies requiring stable component supply with consistent RoHS-compliant manufacturing and tape-and-reel delivery.
Supply support for SMBJ15C-E3/52 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ESD, lightning, and inductive switching is critical.
FAQ
What is the clamping voltage of SMBJ15C-E3/52 at its rated peak pulse current?
The SMBJ15C-E3/52 has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 24.6 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed per Vishay Document Number 88392 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ15C-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ15C-E3/52 suitable for bidirectional transient protection?
No, SMBJ15C-E3/52 is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed. For bidirectional applications such as AC lines or data buses subject to voltage reversals, Vishay specifies the CA-suffix variant (e.g., SMBJ15CA). The "C" in SMBJ15C-E3/52 denotes Vishay's internal unidirectional marking code - confirmed by polarity band indication and absence of symmetric VBR min/max dual-direction specification in the datasheet.
What is the maximum operating junction temperature for SMBJ15C-E3/52?
The SMBJ15C-E3/52 has a maximum operating junction temperature (TJmax) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay Document Number 88392. This rating enables deployment in under-hood automotive locations and enclosed industrial enclosures where ambient temperatures exceed 85 °C, provided thermal design accounts for RθJA = 100 °C/W and appropriate copper pad area (0.2″ × 0.2″).
Does SMBJ15C-E3/52 meet automotive qualification standards?
The standard SMBJ15C-E3/52 is RoHS-compliant commercial grade (E3 suffix) and not AEC-Q101 qualified. Vishay offers automotive-grade variants under HE3/HM3 suffixes (e.g., SMBJ15AHE3_B), which include additional stress testing and traceability. Engineers requiring automotive qualification must specify those part numbers - SMBJ15C-E3/52 itself is intended for industrial and consumer applications where AEC-Q101 is not mandated.
What is the reverse leakage current of SMBJ15C-E3/52 at its stand-off voltage?
At VWM = 15 V and TA = 25 °C, the SMBJ15C-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA, as listed in the Electrical Characteristics table for the SMBJ15A variant (confirmed identical for SMBJ15C-E3/52 per Vishay's family documentation). This low leakage ensures minimal power loss and no interference with upstream voltage regulation or sensing circuits during normal operation.
SMBJ15C-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ15C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15C-E3/52 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-E3/52 reliable?
The price and inventory of SMBJ15C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ15C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15C-E3/52?
SMBJ15C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15C-E3/52 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-E3/52?
For technical support, including SMBJ15C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15C-E3/52 requirements.
6.How does Aetrix verify that SMBJ15C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ15C-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ15C-E3/52?
All SMBJ15C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15C-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ15C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15C-E3/52 Tags
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