My Inquiry
My Account
Taiwan Semiconductor Corporation SMB10J26AH
- Part No.:
- SMB10J26AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AH.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,131
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB10J26AH from Taiwan Semiconductor is a unidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 26V stand-off voltage (VWM), 28.9–31.9V breakdown voltage (VBR @ 1mA), and 42.1V clamping voltage (VC @ 23.8A). It delivers AEC-Q101 qualification and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and inductive switching protection.
For engineers reviewing the SMB10J26AH datasheet, SMB10J26AH pinout, SMB10J26AH application, or SMB10J26AH equivalent, key selection criteria include clamping performance at 23.8A peak pulse current, thermal resistance (RθJL = 20°C/W), unidirectional polarity marking, and compliance with automotive transients and J-STD-020 moisture level 1.
Technical Context
This TVS diode operates as a unidirectional overvoltage clamp in parallel with sensitive electronics, activating within <1.0ps to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive transients.
The device is rated for 1000W peak pulse power (1ms, 10/1000μs waveform), derates linearly above 25°C ambient per Fig. 2, and supports steady-state dissipation up to 5W. Junction temperature range is –55°C to +175°C, enabling use in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 28.9 V / 31.9 V @ 1 mA - Confirmed breakdown threshold range for reliable turn-on margin |
| VC @ IPPM | 42.1 V @ 23.8 A - Clamped voltage during 1000W transient, limiting stress on protected ICs |
| PPK | 1000 W - Peak pulse power handling per 1ms 10/1000μs waveform, per IEC 61000-4-5 |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance enabling effective heat transfer to PCB copper |
| TJ max | +175 °C - Maximum junction temperature supporting operation in high-ambient automotive zones |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking for unidirectional polarity; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or low-voltage rail; defines conduction direction in unidirectional mode |
| Cathode | High-side surge input terminal | Marked by band; accepts transient energy and clamps to VC when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Fast response time <1.0 ps | Enables clamping before transient energy couples into protected circuitry, critical for CAN/LIN bus nodes |
| ISO 7637-2 compliance | Guarantees robustness against real-world automotive transients: Pulse 1 (inductive load dump), Pulse 2a/2b (switching), Pulse 3a/3b (ignition noise) |
| Moisture sensitivity level 1 | Permits standard SMT reflow without baking; eliminates pre-conditioning overhead in high-volume assembly |
Applications
| Automotive Lighting Modules | Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers from load-dump spikes during headlamp or foglamp switching. IC Role / Device Role: Unidirectional TVS placed across power rail and ground near connector entry point. Use Value: Limits clamped voltage to 42.1 V during 1000W transients, preventing latch-up or gate oxide damage in 3.3V/5V logic. | Use Scenario: Safeguarding LIN bus transceivers and sensor inputs from ESD and electrical fast transients in door modules. IC Role / Device Role: Parallel-connected TVS on LIN signal line and VCC rail, leveraging sub-1ps response. Use Value: Maintains signal integrity by clamping below 42.1 V while meeting ISO 10605 ESD immunity requirements. |
| Engine Control Unit (ECU) Power Input | Industrial Motor Drive Gate Drivers |
Use Scenario: Suppressing inductive kickback from fuel injector solenoids and relay coils connected to ECU 12V supply. IC Role / Device Role: Primary rail-level TVS upstream of DC/DC converter input, rated for 175°C junction operation. Use Value: Withstands repeated 1000W pulses per ISO 7637-2 Pulse 2b, preserving power management IC lifetime. | Use Scenario: Shielding isolated gate drivers from MOSFET switching noise and cross-talk in 24V industrial PLC outputs. IC Role / Device Role: Localized TVS on driver VDD rail, exploiting low RθJL = 20°C/W for rapid thermal dissipation. Use Value: Prevents false triggering or latch-up in high-speed gate drivers by clamping transients before they exceed VDD absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A | Same DO-214AA package, identical VWM/VBR/VC specs, but not AEC-Q101 qualified | Lacks automotive qualification; unsuitable for production vehicles or safety-critical modules | Select SMB10J26AH where AEC-Q101 compliance is mandatory per OEM Tier 1 requirements |
| SMCJ26A | DO-214AB (SMC) package, same electrical specs, higher PPK = 1500W, RθJA = 40°C/W vs. 100°C/W | Larger footprint; better thermal performance but incompatible with SMB land patterns | Choose SMB10J26AH when board space is constrained and DO-214AA layout is fixed |
Compared with SMBJ26A and SMCJ26A, SMB10J26AH uniquely combines AEC-Q101 qualification, DO-214AA footprint, and ISO 7637-2 compliance-making it the only option for space-constrained automotive front-end protection requiring full qualification traceability.
Availability
SMB10J26AH is available at Aetrix Electronics and suitable for automotive lighting systems, body control modules, engine control units, and industrial motor drives requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB10J26AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and automotive-qualified components.
The SMB10JxxAH series was developed specifically for automotive power-line transient suppression, targeting ISO 7637-2 compliance, AEC-Q101 reliability, and surface-mount manufacturability in compact DO-214AA packages.
FAQ
What is the clamping voltage of SMB10J26AH at its rated peak pulse current?
The SMB10J26AH has a maximum clamping voltage (VC) of 42.1 V at 23.8 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value ensures protected ICs experience no more than 42.1 V during worst-case transients, directly supporting 3.3 V, 5 V, and 12 V system rails. The SMB10J26AH datasheet confirms this specification at TA = 25°C with defined test conditions.
Is SMB10J26AH suitable for bidirectional transient protection?
No, SMB10J26AH is unidirectional and intended for DC rail protection with defined anode-cathode polarity. For bidirectional applications such as AC lines or differential buses, the SMB10J26CAH variant must be used instead. The "AH" suffix explicitly denotes unidirectional configuration, and the cathode band marking on the SMB10J26AH package confirms polarity orientation.
Does SMB10J26AH meet automotive qualification standards?
Yes, SMB10J26AH is fully AEC-Q101 qualified and tested per the standard's stress test conditions, including HTGB, H3TRB, and temperature cycling. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electrical systems. These qualifications are documented in Taiwan Semiconductor's official A2102 revision datasheet for the SMB10J26AH.
What is the thermal resistance profile of SMB10J26AH?
SMB10J26AH has a junction-to-lead thermal resistance (RθJL) of 20°C/W and a junction-to-ambient resistance (RθJA) of 100°C/W under standard JEDEC test conditions. This enables efficient heat transfer to PCB copper pads and supports continuous operation up to +175°C junction temperature. The RθJL value is especially critical for high-pulse-repetition scenarios in automotive ECUs.
Can SMB10J26AH be used in industrial applications outside automotive?
Yes, SMB10J26AH is widely deployed in industrial motor drives, PLC I/O modules, and 24 V power supplies due to its 1000 W surge rating, –55°C to +175°C operating range, and robust glass-passivated junction. While AEC-Q101 qualification adds assurance, its core electrical and thermal specs make SMB10J26AH suitable for any harsh-environment application needing reliable unidirectional TVS protection.
SMB10J26AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMB10J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J26AH FAQ
1.How can I place an order for SMB10J26AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AH 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 SMB10J26AH reliable?
The price and inventory of SMB10J26AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J26AH is usually 5 days.
3.What payment methods are accepted for SMB10J26AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AH?
SMB10J26AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AH 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 SMB10J26AH?
For technical support, including SMB10J26AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AH requirements.
6.How does Aetrix verify that SMB10J26AH is sourced from the original manufacturer or authorized distributors?
All SMB10J26AH 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 SMB10J26AH meets industry standards.
7.What is the process for return or replacement of SMB10J26AH?
All SMB10J26AH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AH, 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 SMB10J26AH part is unused and in its original packaging.
Return procedure for SMB10J26AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AH 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
