My Inquiry
My Account
Taiwan Semiconductor Corporation P6SMB91CH
- Part No.:
- P6SMB91CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CH.pdf
- Description:
- 600W, 91V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,807
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB91CH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage range 81.9–100 V, clamping voltage 131 V at 4.8 A peak pulse current, and stand-off voltage 73.7 V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB91CH datasheet, P6SMB91CH pinout, P6SMB91CH application, or P6SMB91CH equivalent, key selection criteria include its 131 V clamping performance at 4.8 A, <1 μA leakage at 73.7 V, AEC-Q101 qualification, and suitability for 12 V/24 V automotive supply line protection where fast response (<1 ps) and low thermal resistance (RθJA = 55 °C/W) are critical.
Technical Context
The P6SMB91CH uses a glass-passivated silicon junction optimized for high-energy transient suppression in unidirectional configurations. Its 10/1000 μs waveform rating of 600 W enables robust handling of load-dump and inductive switching events without degradation.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing and ISO 7637-2 immunity requirements across Pulse 1 (inductive flyback), Pulse 2a (battery disconnect), Pulse 2b (alternator load dump), and Pulse 3a/3b (switching noise). Junction temperature range is –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9 V / 100 V - Ensures reliable triggering above system nominal voltage (e.g., 24 V rail) while avoiding false clamping during normal operation |
| VWM | 73.7 V - Maximum continuous reverse operating voltage; sets safe margin below breakdown for stable DC bias |
| VC @ IPPM | 131 V at 4.8 A - Clamping voltage under 10/1000 μs surge defines worst-case overvoltage seen by downstream ICs |
| IR @ VWM | <1 μA - Ultra-low leakage preserves battery life and avoids signal integrity issues in always-on circuits |
| PPPSM | 600 W - Peak pulse power rating determines survivability against high-energy transients like ISO 7637-2 Pulse 2b |
| TJ max | +150 °C - Enables use in under-hood automotive environments without derating at ambient up to 125 °C |
| RθJA | 55 °C/W - Thermal resistance supports sustained power dissipation in compact SMB footprint without forced airflow |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; establishes reference for clamping action |
| Cathode | High-side transient input | Connected to protected line (e.g., 24 V supply); absorbs surge energy when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including temperature cycling, humidity, and mechanical shock per JEDEC standards |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under repeated surge stress and high-humidity conditions |
| ISO 7637-2 compliance | Guaranteed immunity to standardized automotive transients (Pulse 1, 2a, 2b, 3a, 3b) without external circuitry |
| Fast response time | <1.0 ps rise time ensures clamping initiates before sensitive downstream components experience overvoltage |
| Low profile SMB package | Enables automated placement in space-constrained modules such as body control units and ADAS power supplies |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) against alternator load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 24 V rail and chassis ground to clamp transients before they reach PMICs and microcontrollers. Use Value: Limits peak voltage to 131 V during 600 W surges, preventing latch-up or permanent damage to 36 V-rated power management ICs. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against EFT bursts and field-wiring induced transients. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V sensor input lines, operating in parallel with optocoupler isolation stages. Use Value: Sub-μA leakage at 73.7 V avoids loading of high-impedance sensor signals; 131 V clamping ensures compatibility with 24 V logic-level thresholds. |
| LED Lighting Driver Protection | Automotive Infotainment Power Supply |
Use Scenario: Shielding constant-current LED drivers from voltage spikes caused by hot-plug events or relay contact bounce in commercial lighting systems. IC Role / Device Role / Timing Role: Standoff TVS connected across driver input terminals to absorb repetitive 10/1000 μs pulses without degradation. Use Value: 600 W rating sustains >100,000 surge events per MIL-STD-883H Method 3015.7; RθJA = 55 °C/W allows natural convection cooling in enclosed fixtures. |
Use Scenario: Securing 5 V/3.3 V DC-DC converter inputs in head unit power trees against conducted noise from vehicle battery and CAN bus coupling. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary fuse and LC filter, providing final overvoltage defense before buck regulator ICs. Use Value: AEC-Q101 qualification confirms operation across –40 °C to +105 °C ambient; 0.090 g weight minimizes board stress in vibration-prone dashboard mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Bidirectional variant; VBR min/max = 100/111 V; VC = 146 V @ 4.1 A; same 600 W rating | Required where bidirectional protection is needed (e.g., data lines, AC-coupled signals); not suitable for unidirectional rail clamping without polarity check | Select SMBJ90A only if system transients occur in both polarities; P6SMB91CH provides tighter VBR tolerance and lower clamping for 24 V DC rails |
| 1.5SMC91A | Same VBR (81.9–100 V) and VC (131 V), but in larger DO-214AB (SMC) package; higher PPPSM = 1500 W | Used where higher surge endurance is required (e.g., heavy-duty truck load dump); incompatible with SMB footprint | Choose 1.5SMC91A only when PCB layout allows SMC pad dimensions and 1500 W rating is mandatory; P6SMB91CH offers identical electrical specs in space-saving SMB form factor |
Compared with SMBJ90A and 1.5SMC91A, the P6SMB91CH delivers optimal balance of AEC-Q101 compliance, 600 W surge capability, and DO-214AA footprint-making it the preferred choice for cost-sensitive, space-constrained 24 V automotive modules requiring unidirectional clamping with verified ISO 7637-2 immunity.
Availability
P6SMB91CH is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED lighting drivers, and infotainment power supplies requiring stable component supply with full AEC-Q101 traceability and RoHS/halogen-free compliance.
Supply support for P6SMB91CH 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, MOSFETs, and power management devices.
The P6SMB91CH belongs to TSC's AEC-Q101-qualified P6SMBxH series, engineered specifically for automotive and industrial transient suppression where reliability under harsh thermal and electrical stress is non-negotiable.
FAQ
What is the maximum clamping voltage of the P6SMB91CH under standard test conditions?
The P6SMB91CH has a maximum clamping voltage (VC) of 131 V when subjected to a 10/1000 μs peak pulse current of 4.8 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB91CH maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is the P6SMB91CH suitable for automotive applications requiring AEC-Q101 certification?
Yes, the P6SMB91CH is explicitly AEC-Q101 qualified, having passed stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. It is approved for use in automotive power distribution modules, body control units, and infotainment systems where reliability under under-hood conditions is mandatory. The P6SMB91CH documentation confirms full compliance with AEC-Q101 Rev D requirements.
How does the P6SMB91CH differ from the P6SMB91AH variant?
The P6SMB91CH has a breakdown voltage range of 81.9–100 V and is unidirectional, while the P6SMB91AH offers tighter VBR tolerance (86.5–95.5 V) and is also unidirectional. Both share identical package (DO-214AA), power rating (600 W), and clamping voltage (131 V / 125 V respectively). The P6SMB91CH is selected when broader VBR tolerance is acceptable and cost optimization is prioritized.
What is the reverse leakage current specification for the P6SMB91CH at its stand-off voltage?
The P6SMB91CH exhibits a maximum reverse leakage current (ID) of 1 μA when biased at its rated stand-off voltage (VWM) of 73.7 V. This ultra-low leakage ensures minimal power loss in always-on automotive subsystems and prevents signal distortion in high-impedance sensing paths. The P6SMB91CH achieves this performance using a glass-passivated junction structure that stabilizes leakage across temperature.
Does the P6SMB91CH meet ISO 7637-2 immunity requirements for automotive electronics?
Yes, the P6SMB91CH is specified to meet ISO 7637-2 Pulse 1 (inductive flyback), Pulse 2a (battery disconnect), Pulse 2b (load dump), and Pulse 3a/3b (switching noise) waveforms. Its 600 W peak pulse power rating and sub-1 ps response time ensure effective suppression without degradation. The P6SMB91CH datasheet explicitly lists ISO 7637-2 compliance as a key feature for automotive-grade deployment.
P6SMB91CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 73.7V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB91CH FAQ
1.How can I place an order for P6SMB91CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CH 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 P6SMB91CH reliable?
The price and inventory of P6SMB91CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91CH is usually 5 days.
3.What payment methods are accepted for P6SMB91CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CH?
P6SMB91CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CH 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 P6SMB91CH?
For technical support, including P6SMB91CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CH requirements.
6.How does Aetrix verify that P6SMB91CH is sourced from the original manufacturer or authorized distributors?
All P6SMB91CH 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 P6SMB91CH meets industry standards.
7.What is the process for return or replacement of P6SMB91CH?
All P6SMB91CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CH, 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 P6SMB91CH part is unused and in its original packaging.
Return procedure for P6SMB91CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CH 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…
