My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ14C-E3/5B
;;2.jpg)
- Part No.:
- SMBJ14C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14C-E3/5B.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ14C-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 14 V standoff voltage (VWM), 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), protecting MOSFETs and ICs in industrial power supplies.
For engineers reviewing the SMBJ14C-E3/5B datasheet, SMBJ14C-E3/5B pinout, SMBJ14C-E3/5B application, or SMBJ14C-E3/5B equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at VWM, 15.6–17.2 V breakdown range (VBR), thermal resistance of 100 °C/W (junction-to-ambient), and RoHS-compliant matte tin-plated leads suitable for automated SMT placement.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 14 V and rapidly transitions to low-impedance conduction above its breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), enabling suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBJ14C-E3/5B is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its 20 °C/W junction-to-lead thermal resistance supports reliable power dissipation under repetitive surge conditions when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe operating margin for 12 V nominal systems. |
| VBR (Breakdown Voltage) | 15.6–17.2 V at 1.0 mA - Confirmed avalanche onset range; ensures consistent triggering across production lots. |
| VC (Clamping Voltage) | 23.2 V at 25.9 A (10/1000 µs) - Maximum voltage seen by protected circuit during worst-case transient; limits stress on downstream 24 V-rated components. |
| IPPM (Peak Pulse Current) | 25.9 A - Peak surge current capability under standardized 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 3 surges. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capacity; enables single-device protection without parallel staging in mid-power applications. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; informs derating requirements above 25 °C ambient. |
| Leakage (ID) | 1.0 µA max at VWM - Low standby current minimizes system power loss and avoids false triggering in high-impedance sensor interfaces. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line. | Defines polarity-sensitive installation-must be placed between protected node and ground (for unidirectional clamp to GND). |
| Cathode | Current exit terminal in forward bias; marked by band on package body. | Identifies connection point to higher-potential rail (e.g., VCC or signal line); critical for correct orientation in series or shunt configurations. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events without external current limiting in 12–24 V DC systems. |
| 23.2 V clamping at 25.9 A | Keeps protected ICs and MOSFETs within safe absolute maximum ratings during 1 kV/0.5 kΩ combination wave surges. |
| Glass passivated junction | Ensures stable, repeatable avalanche behavior over temperature and lifetime-critical for automotive and industrial reliability. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling; compatible with high-volume manufacturing. |
| RoHS-compliant, matte tin leads | Meets global environmental compliance and ensures reliable solder wetting and intermetallic formation in automated reflow processes. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from relay and solenoid switching. IC Role / Device Role / Timing Role: Unidirectional shunt TVS clamping transient spikes to <23.2 V during turn-off of 24 V inductive loads. Use Value: Prevents latch-up and oxide damage in 3.3 V/5 V logic circuits while maintaining compatibility with 24 V supply rails. |
Use Scenario: Surge suppression on LIN bus lines and power inputs of door module ECUs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing 10/1000 µs transients up to 600 W without degradation over 100,000 cycles. Use Value: Enables AEC-Q101-compliant designs using commercial-grade SMBJ14C-E3/5B with verified field performance in 12 V vehicle networks. |
| 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 rails. IC Role / Device Role / Timing Role: Standoff at 14 V allows operation across 12 V nominal input with margin; clamps >23 V transients within nanoseconds. Use Value: Eliminates need for multi-stage protection (e.g., MOV + TVS) in space-constrained telecom brick designs. |
Use Scenario: ESD and surge hardening of microcontroller reset lines and front-panel button inputs in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) operation prevents interference with weak pull-up/pull-down networks on 3.3 V GPIOs. Use Value: Maintains signal integrity during normal operation while delivering sub-1 ns response to ±8 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-E3/5B | Same VWM (14 V), identical package and clamping (23.2 V), but rated for 1.0 µA leakage at VWM; no AEC-Q101 qualification. | Commercial-only use; not validated for automotive temperature cycling or humidity testing. | Select SMBJ14A-E3/5B for cost-sensitive industrial controls where AEC-Q101 is not required. |
| SMCJ14A-E3/57T | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VC, but 30% larger footprint and 2× thermal mass. | Required for sustained surge duty cycles (>0.01%) or higher IPPM demands beyond 25.9 A. | Choose SMCJ14A-E3/57T only when 600 W is insufficient and board space permits larger SMC footprint. |
Compared with SMBJ14A-E3/5B, the SMBJ14C-E3/5B offers identical electrical specs but includes RoHS compliance and commercial-grade qualification; versus SMCJ14A-E3/57T, it trades power headroom for compact SMB layout and lower thermal inertia-ideal for space-constrained, single-event surge protection.
Availability
SMBJ14C-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 with full traceability and long-term lifecycle support.
Supply support for SMBJ14C-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, and protection devices with emphasis on reliability, precision, and manufacturability.
The SMBJ series was developed for high-reliability transient suppression in compact SMT layouts, targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and process compatibility are critical.
FAQ
What is the maximum clamping voltage of SMBJ14C-E3/5B under standard test conditions?
The SMBJ14C-E3/5B has a maximum clamping voltage (VC) of 23.2 V when subjected to a 10/1000 µs waveform at 25.9 A peak pulse current. This value is measured per ANSI/IEEE C62.35 and reflects the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMBJ14C-E3/5B maintains this clamping performance across its qualified operating temperature range of -55 °C to +150 °C.
Is SMBJ14C-E3/5B suitable for automotive applications requiring AEC-Q101 qualification?
No-SMBJ14C-E3/5B is RoHS-compliant and commercial-grade, but not AEC-Q101 qualified. For automotive use, Vishay specifies the HE3 or HM3 suffix variants (e.g., SMBJ14CHE3_B/I). The SMBJ14C-E3/5B shares identical electrical parameters and package dimensions with qualified versions but lacks the extended temperature cycling, humidity, and mechanical stress validation required for under-hood or chassis-mounted automotive modules.
How does the SMBJ14C-E3/5B differ from the SMBJ14A-E3/5B?
The SMBJ14C-E3/5B and SMBJ14A-E3/5B share identical electrical specifications-including VWM = 14 V, VBR = 15.6–17.2 V, VC = 23.2 V, and 600 W PPPM-and both use the SMB (DO-214AA) package. The "C" suffix denotes Vishay's commercial-grade RoHS-compliant variant with matte tin leads meeting JESD 201 Class 2 whisker resistance, whereas "A" indicates legacy commercial grade without explicit whisker test compliance documentation.
What is the thermal resistance and recommended PCB layout for SMBJ14C-E3/5B?
The SMBJ14C-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 reliability under repetitive surge conditions, Vishay recommends minimum pad dimensions matching the package outline and thermal vias beneath the cathode/anode pads. The SMBJ14C-E3/5B must be placed with adequate clearance from heat sources due to its 150 °C TJMAX.
Can SMBJ14C-E3/5B be used in bidirectional protection circuits?
No-SMBJ14C-E3/5B is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMBJ14CA), which uses symmetrical junction construction. Using SMBJ14C-E3/5B in reverse-biased configurations risks permanent breakdown, as it conducts heavily in reverse above VBR. For AC signal line or differential bus protection, select the CA variant explicitly rated for bidirectional clamping.
SMBJ14C-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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 23.3A
- 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)
SMBJ14C-E3/5B FAQ
1.How can I place an order for SMBJ14C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14C-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 SMBJ14C-E3/5B reliable?
The price and inventory of SMBJ14C-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 SMBJ14C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ14C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14C-E3/5B?
SMBJ14C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14C-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 SMBJ14C-E3/5B?
For technical support, including SMBJ14C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14C-E3/5B requirements.
6.How does Aetrix verify that SMBJ14C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ14C-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 SMBJ14C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ14C-E3/5B?
All SMBJ14C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14C-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 SMBJ14C-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ14C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14C-E3/5B 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 …
