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Vishay General Semiconductor - Diodes Division SMB10J28-E3/5B
- Part No.:
- SMB10J28-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28-E3/5B.pdf
- Description:
- TVS DIODE 28VWM 50VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,180
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Product details
Overview
SMB10J28-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on DC power rails and signal lines. It features 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR), 45.4 V clamping voltage (VC) at 22.0 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J28-E3/5B datasheet, SMB10J28-E3/5B pinout, SMB10J28-E3/5B application, or SMB10J28-E3/5B equivalent, key selection criteria include clamping performance under 22 A surge, unidirectional polarity for DC rail protection, RoHS-compliant matte tin terminations, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (31.1–34.4 V), it avalanches to divert transient energy away from downstream ICs. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients like ISO 7637-2 pulse 1/2a.
Thermal design relies on RθJA = 72 °C/W and RθJL = 20 °C/W, requiring minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 1000 W dissipation. The glass-passivated junction enables stable operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; sets upper limit for protected line's nominal DC voltage. |
| VBR (min/max) | 31.1 V / 34.4 V at 1.0 mA test current - defines avalanche initiation window; ensures reliable turn-on above system overvoltage threshold. |
| VC @ IPPM | 45.4 V at 22.0 A - clamped voltage during full-rated 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 1000 W - peak pulse power handling capability with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out. |
| IR @ VWM | ≤1.0 μA - reverse leakage at 28 V; negligible power loss and no measurable loading on 24 V systems. |
| TJ max. | 150 °C - maximum junction temperature; enables use in under-hood automotive environments without derating below 125 °C ambient. |
| Package | DO-214AA (SMB) - surface-mount outline with 0.220" body length, compatible with automated pick-and-place and reflow soldering per J-STD-020 MSL level 1. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms shunt path during overvoltage events. |
| Cathode | Protected line input | Connected to line being protected (e.g., 24 V supply); color band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage across temperature and humidity; eliminates risk of junction corrosion. |
| Low profile DO-214AA | Height ≤ 0.086", enabling use in space-constrained modules such as ADAS camera ECUs and motor control boards. |
| MSL level 1 rating | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, eliminating bake requirements pre-assembly. |
| 1000 W peak pulse power | Supports robust protection against load dump (ISO 16750-2) and inductive switching surges in 24 V systems. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply rail of an automotive body control module from load dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VIN and GND, clamping surges within 1 ns response time. Use Value: Limits voltage to ≤45.4 V during 22 A surge, preventing damage to downstream PMICs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Safeguarding analog output (4–20 mA) lines of a pressure sensor in factory automation equipment. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS placed across signal and return, absorbing ESD and cable discharge events. Use Value: Clamps ±45.4 V transients while adding only ≤1.0 μA leakage, preserving signal accuracy and avoiding offset errors in precision current loops. |
| Telecom DC Power Feeds | OBD-II Diagnostic Interface Protection |
|
Use Scenario: Securing 48 V DC power input of remote radio head (RRH) in 5G base station infrastructure. IC Role / Device Role / Timing Role: Primary surge clamp on input stage, coordinated with upstream fuse and downstream LC filter. Use Value: Handles 1000 W pulses without degradation, meeting IEC 61000-4-5 surge immunity requirements for outdoor telecom equipment. |
Use Scenario: Hardening OBD-II connector pins (pins 6/CAN-H and 14/CAN-L) against ESD and vehicle battery reversal. IC Role / Device Role / Timing Role: Unidirectional TVS on each CAN line referenced to chassis ground, leveraging low capacitance for <100 Mbps CAN FD compliance. Use Value: Maintains signal integrity with <10 pF junction capacitance at 0 V bias, avoiding CAN bus timing skew or reflection issues. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A-E3/5B | Same VWM (28 V), identical DO-214AA package, but lower PPPM (600 W) and higher VC (48.4 V at 12.3 A). | Rated for lighter-duty surges; insufficient for ISO 16750-2 load dump in 24 V systems. | Select SMB10J28-E3/5B when 1000 W surge handling and tighter clamping (45.4 V vs. 48.4 V) are required. |
| SMCJ28A-E3/57T | Higher power (1500 W), larger DO-214AB (SMC) package, same VWM and VBR range, VC = 45.4 V at 33.0 A. | Requires larger PCB footprint and different thermal pad layout; suited for higher-energy industrial mains interfaces. | Choose SMB10J28-E3/5B for space-constrained automotive modules where DO-214AA footprint and AEC-Q101 qualification are mandatory. |
Compared with SMBJ28A-E3/5B and SMCJ28A-E3/57T, SMB10J28-E3/5B uniquely balances 1000 W surge capacity, AEC-Q101 qualification, and compact DO-214AA packaging - making it optimal for automotive and industrial edge nodes where board area and qualification rigor are both critical.
Availability
SMB10J28-E3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SMB10J28-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB10J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density transient suppression in harsh-environment applications including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SMB10J28-E3/5B at its rated peak pulse current?
The SMB10J28-E3/5B has a maximum clamping voltage (VC) of 45.4 V at 22.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during full-rated surge events. The SMB10J28-E3/5B maintains this clamping performance across its specified operating temperature range.
Is SMB10J28-E3/5B qualified for automotive applications?
Yes, SMB10J28-E3/5B is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and ESD per JESD22-A114. This qualification confirms its suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and mechanical stress is critical. The SMB10J28-E3/5B carries the HE3 suffix variant for AEC-Q101; however, the E3 version shares identical die and construction, with qualification confirmed per Vishay documentation.
What is the reverse leakage current of SMB10J28-E3/5B at its stand-off voltage?
The SMB10J28-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 28 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures negligible power loss and no measurable loading effect on 24 V supply rails or precision analog signal paths. Leakage remains within specification up to 125 °C ambient per derating curves in the datasheet.
Does SMB10J28-E3/5B have a bi-directional variant?
No, SMB10J28-E3/5B is strictly unidirectional. Its part number suffix "J" (not "JCA") and device marking code "1CG" confirm unidirectional polarity, with cathode identified by a band. For bi-directional operation at 28 V, the functionally matched part is SMB8J28CA-E3/5B - which offers 800 W PPPM, 45.4 V VC at 17.6 A, and same DO-214AA package.
What is the thermal resistance from junction to ambient for SMB10J28-E3/5B?
The SMB10J28-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test board conditions and is essential for calculating safe operating area under sustained surge duty cycles. For improved thermal performance, increasing pad area or adding internal ground planes reduces effective RθJA.
SMB10J28-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J28-E3/5B FAQ
1.How can I place an order for SMB10J28-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28-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 SMB10J28-E3/5B reliable?
The price and inventory of SMB10J28-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 SMB10J28-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J28-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28-E3/5B?
SMB10J28-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28-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 SMB10J28-E3/5B?
For technical support, including SMB10J28-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28-E3/5B requirements.
6.How does Aetrix verify that SMB10J28-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J28-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 SMB10J28-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J28-E3/5B?
All SMB10J28-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28-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 SMB10J28-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J28-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28-E3/5B Tags
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